Standard Horizon HX370E Owner's Manual

HX370E

VHF/FM Marine

Handheld Transceiver

Owner's Manual

HX370E

TABLE OF CONTENTS

1. GENERAL INFORMATION ........ 2

2. ACCESSORIES .......................... 3

2.1 PACKING LIST........................................ 3

2.2 OPTIONS ................................................ 3

3. BATTERY ................................... 4

3.1 BATTERY CHARGING ........................... 4

3.2 BATTERY REMOVAL/INSTALLATION ... 4

3.3 USING THE NC-88

BATTERY CHARGER ..... 5

3.4 FBA-25A ALKALINE BATTERY CASE .... 5

3.5 BATTERY SAFETY ................................. 6

4.

CONTROLS AND INDICATORS .....

4.1 CONTROLS and CONNECTIONS ......... 8

4.2 INDICATORS ........................................ 10

5. OPERATION ............................. 12

5.1 INITIAL SETUP ..................................... 12

5.2 RECEPTION ......................................... 13

5.3 TRANSMISSION ................................... 14

5.4 TRANSMIT TIME-OUT TIMER (TOT)... 14

5.5 USA, CANADIAN, AND

INTERNATIONAL BANDS .... 15

RF Exposure Safety Statement

SAFETY INFORMATION

Your wireless handheld portable transceiver contains a low power transmit­ter. When the Push-to-Talk (PTT) button is pushed, the transceiver sends
out radio frequency (RF) signals. In August 1996, the Federal Communica­tions Commission adopted RF exposure guidelines with safety levels for
hand-held wireless devices.

This device is authorized to operate at a duty factor not to exceed 50% (this
corresponds to 50% transmission time and 50% reception time).

WARNING: To maintain compliance with the FCC’s RF exposure guidelines,
this transmitter and its antenna must maintain a separation distance of at
least 1 inch (2.5 centimeters) from your face. Speak in a normal voice, with
the antenna pointed up and away from the face at the required separation
distance.

If you use a headset accessory for this radio, with the radio worn on your
body, use only the STANDARD HORIZON belt clip for this transceiver, and
ensure that the antenna is at least 1 inches (2.5 centimeters) from your body
when transmitting.

Use only the supplied antenna. Unauthorized antennas, modifications, or at­tachments could damage the transmitter, and may violate FCC regulations.

5.6 SCAN .................................................... 15

5.7 PROGRAMMABLE PRIORITY SCAN .. 16

5.8 DUAL WATCH ....................................... 16

5.9 EMERGENCY (CHANNEL 16 USE) ..... 17

5.10 CALLING ANOTHER VESSEL
(CHANNEL 16 OR 9) ... 17

5.11 OPERATING ON CHANNEL 13 .......... 18

5.12 OPERATING ON CHANNEL 67 .......... 18

5.13 PRESET CHANNELS (1 ~ 8):

INSTANT ACCESS .... 19

5.14 SIMPLEX/DUPLEX CHANNEL USE ... 20

5.15 ENABLING S.O.S

7

STROBE OPERATION ..... 20

5.16 VOICE SCRAMBLER UNIT ................ 21

5.17 SETUP MODE .................................... 22

5.18 CLONING ............................................ 25

6. MAINTENANCE ........................ 26

7. CHANNEL ASSIGNMENTS ..... 27

8. SPECIFICATIONS .................... 34

HX370E

Congratulations on your purchase of the HX370E! Whether this is your first
portable marine VHF transceiver, or if you have other STANDARD HORIZON
equipment, the STANDARD HORIZON organization is committed to ensur­ing your enjoyment of this high-performance transceiver, which should pro­vide you with many years of satisfying communications even in the harshest
of environments.

We appreciate your purchase of the HX370E, and encourage you to read
this manual thoroughly, so as to learn and understand the capabilities of the
HX370E fully.

ABOUT VHF MARINE RADIO

The radio frequencies used in the VHF marine band lie between 156
and 158 MHz with some shore stations available between 161 and 163
MHz. The marine VHF band provides communications over distances
that are essentially “line of sight” (VHF signals do not travel well through
objects such as buildings, hills or trees). Actual transmission range de­pends much more on antenna type, gain and height than on the power
output of the transmitter. The approximate distance a portable 5W radio
may communicate is about 5 miles in if there are no obstructions (build­ings, hills etc.) restricting line of sight transmission.

ABOUT LMR CHANNELS

The HX370E is capable of PC programming 40 LMR (Land Mobile Ra­dio) channels by a dealer. The frequency range is 137 to 174MHz which
may be setup for 25kHz (wide) or 12.5kHz (narrow) channel stepping
with CTCSS and DCS signaling. Contact your dealer for further details.

Attention in Case of Use

This transceiver works on frequencies which are not generally permitted.
For frequency allocation, apply for a licence at your local spectrum man­agement authority.
For actual usage contact your dealer or
sales shop in order to get your trans­ceiver adjusted to the allocated fre­quency range.

HX370E

List of the practicable area

AUT BEL DNK FIN
FRA DEU GRC ISL

IRL ITA LIE LUX

NLD NOR PRT ESP

SWE CHE GBR

Page 1

1. GENERAL INFORMATION

1.1 INTRODUCTION

The HX370E is a submersible, miniature 5-Watt portable two-way VHF ma­rine transceiver. The transceiver has all allocated USA, international, or
Canadian channels. It has an emergency channel 16 which can be immedi­ately selected from any channel by pressing the 16/9 key.

Besides VHF marine transceiver operation, the HX370E provides LMR (Land
Mobile Radio) transceiver operation.

The transceiver includes the following features: Memory Scanning, Program­mable Priority Scanning, Battery Saver, easy-to-read large LCD display,
EEPROM memory back-up, Battery Life displayed on LCD.

The transmitter provides a maximum of 5 Watts output, and has the selection
of 2.5 Watts and 1 Watt to assist the user in ensuring maximum battery life.

The optional FVP-31 Voice Scrambler can be installed to permit secure voice
communications with other STANDARD HORIZON radios with the FVP-31
scramblers installed.

Page 2

HX370E

2. ACCESSORIES

2.1 PACKING LIST

When the package containing the transceiver is first opened, please check
it for the following contents:

• HX370E Transceiver

• FNB-83

• FNB-V57IS

• NC-88C/U 230 VAC Overnight Charger

• CD-26 Charger Cradle

• FBA-25A Alkaline Battery Case (Except for IS version)

• CAT460 Antenna

• E-DC-19A

• CLIP-14 Belt Clip with screw

• Owner’s Manual

2.2 OPTIONS

VAC-370B/C/U
CE68 PPS Software
CT-111 Cable SET for CE68
CAW230 Radio-to-Ship’s-Antenna Adapter

Note: Before operating the HX370E for the
first time, it is recommended that the bat­tery be charged.

HX370E

Ú

7.2 V, 1400 mAh Ni-MH Battery Pack

Ú

7.2 V, 1100 mAh Ni-Cd Battery Pack

Depends on the transceiver version.

Ú

DC Cable with 12 V Cigarette Lighter Plug (Except for IS version)

CMP460 Noise-canceling Waterproof Speaker/Microphone
MH-57

Mini Speaker/Microphone (Except for IS version)

A4B

VC-24 VOX Headset (Except for IS version)
VC-27 Earpiece/Microphone (Except for IS version)
CT-32 Clone Cable
FVP-31 Voice Scrambler
CD-26 Charger Cradle
FBA-25A Alkaline Battery Case

(Except for IS version)

FNB-83 7.2 V, 1400 mAh Ni-MH

Battery Pack

E-DC-19A DC Cable with 12 V

Cigarette Lighter Plug

(Except for IS version)

NC-88B/C/U

120/230 VAC Overnight Charger

E-DC-6 DC Cable; plug and wire only

Rapid charger 120/230 VAC

Page 3

3. BATTERY

The FNB-83 and FNB-V57IS (intrinsically Safe Version) are high perfor­mance rechargeable battery providing high capacity in a compact package.

Note: FNB-83 is supplied with the HX370E and the FNB-V57IS is supplied

with the “IS Version” only.

CAUTION

To avoid risk of explosion and injury, FNB-83/FNB-V57IS battery pack
should only be removed, charged or recharged in non-hazardous envi­ronments.

3.1 BATTERY CHARGING

If the radio has never been used, or its charge is depleted, it may be charged
by connecting the NC-88 battery charger (see figure 2 on page 5). If 12V DC
power is available, the optional E-DC-6 or the E-DC-19A DC adapter with
cigarette plug may be used for charging the battery. The NC-88, E-DC-6 and
E-DC-19A will charge a completely discharged FNB-83/FNB-V57IS battery
pack in about 10 hours.

3.2 BATTERY REMOVAL/INSTALLATION

1. Turn the transceiver off.

2. To remove, open the Battery Pack Latch on the bottom of the trans­ceiver, then slide the battery downward and out from the transceiver.

3. To install, insert the battery pack into the battery compartment on the
back of the transceiver, then close the Battery Pack Latch until it locks in
place with a “click.”

Install the Battery Pack

«

«

Close the

Figure 1

Important Notice

To avoid the ingress of water between the transceiver body and battery
pack/case, close the Battery Pack Latch until it locks in place with a
“click” while pressing and holding the battery pack/case in to ward the
top panel (secure the upper edge of the battery pack/case snugly against
the upper edge of the battery nest).

Page 4

Battery Pack Latch

HX370E

3.3 USING THE NC-88 BATTERY CHARGER

1. Install the supplied FNB-83/FNB-V57IS battery pack on the rear of the
HX370E. Ensure that the transceiver is

switched off.

2. Plug the NC-88 Overnight Charger into the
AC line outlet, then insert the cable plug
into the jack located on the side panel of
the CD-26 Charger Cradle.

3. Insert the transceiver and battery pack into
the CD-26; the antenna jack should be at
the left side when viewing the charger from
the front.

4. If the transceiver and battery pack are in­serted correctly, the Red indicator on the
CD-26 will glow. A fully-discharged pack will
be charged completely in 10 hours.

Figure 2

Important Notes:

H The NC-88 is not designed to power the transceiver for operation (re-

ception or transmission).

H Do not leave the charger connected to the transceiver for continuous

periods in excess of 24 hours. Long term overcharging can degrade the
Ni-MH battery pack and significantly shorten its useful life.

H If using a charger other than the NC-88/CD-26, or if using a battery pack

other than the FNB-83/FNB-V57IS, follow the appropriate instructions
provided with the charger/battery. Contact your Dealer if you have any
doubts about the appropriateness of the particular charger or battery
pack you intend to use.

3.4 FBA-25A Waterproof Alakline Battery Tray

FBA-25A is a battery case that holds six alkaline batteries and is used with the
HX370E transceiver.

When installing batteries, insert the (–) end first, then press in the (+) end so
the battery snaps into place. Always replace all six batteries at the same
time, paying attention to the polarity indicated inside the case.

The FBA-25A must not be used with rechargeable cells. The FBA-

25A does not contain the thermal and over-current protection
circuits (provided in the "FNB" series of Ni-MH Battery Packs) required
when utilizing Ni-Cd and Ni-MH cells.

HX370E

Page 5

3.5 BATTERY SAFETY

Battery packs for your transceiver contain Ni-MH/Ni-Cd batteries. This type
of battery stores a charge powerful enough to be dangerous if misused or
abused, especially when removed from the transceiver. Please observe the
following precautions:

DO NOT SHORT BATTERY PACK TERMINALS

Shorting the terminals that power to the transceiver can cause sparks, se­vere overheating, burns, and battery cell damage. If the short is of sufficient
duration, it is possible to melt battery components. Do not place a loose
battery pack on or near metal surfaces or objects such as paper clips, keys,
tools, etc. When the battery pack is installed on the transceiver, the termi­nals that transfer current to the transceiver are not exposed.

DO NOT INCINERATE

Do not dispose of any battery in a fire or incinerator. The heat of fire may
cause battery cells to explode and/or release dangerous gases.

Caution

Never short-circuit the connection terminals on the bat­tery or charger !

Page 6

Ni-MH

CONTAINS NICKEL-METAL-HYDRIDE BATTERY.

MUST BE RECYCLED OR DISPOSED OF PROP­ERLY.

CONTAINS NICKEL-CADMIUM BATTERY.

MUST BE RECYCLED OR DISPOSED OF
PROPERLY

HX370E

4. CONTROLS AND INDICATORS

NOTE

This section defines each control of the transceiver. For detailed oper­ating instructions, refer to section 5 of this manual. Refer to Figure 3 for
the location of the following controls, indicators, and connections.

HX370E

Figure 3

Controls and Connectors

Page 7

4.1 CONTROLS AND CONNECTIONS

POWER SWITCH/VOLUME CONTROL

Turns the transceiver on and off, and adjusts the volume.

MIC/SP JACK

Accepts the optional CMP460, MH-57
VOX Headset. When this jack is used, the internal speaker is disabled.

Do not allow the HX370E to become submerged in water while
the plastic cover over the MIC/SP jack is removed.

speaker microphone or VC-24

A4B

Antenna Connector

The supplied CAT460 flexible antenna is attached here.

PUSH-TO-TALK (PTT) SWITCH

Activates transmission.

SQUELCH (SQL) SWITCH

Sets the point at which random noise on the channel does not activate
the audio circuits but a received signal does. This point is called the
Squelch threshold. Further adjustment of the squelch control will de­grade the reception of wanted transmissions.

BUSY/TX INDICATOR

This indicator glows green when a signal is being received and red when
transmitting.
When the Emergency feature is activated, this indicator blinks the inter­nationally-recognized Morse Code “S.O.S” message.

UP () KEY

Used to select a desired channel. Each press increases the channel
number. When held down, the channels increase continuously.

DOWN () KEY

Used to select a desired channel. Each press decreases the channel
number. When held down, the channels decrease continuously.

16/9 KEY

Immediately recalls channel 16 from any channel location. Holding down
this key recalls channel 9. The 16/9 key is also used to revert to the
channel selected before pressing the 16/9 key.

Example: select Ch68, press 16/9 key (Ch16 appears), press the 16/9

key again and Ch68 is shown.

HX370EPage 8

DW KEY

Press the DW key, scan for voice communications on the priority chan­nel and another selected channel until a signal is received on either
channel (Dual Watch). Refer to section “5.8 DUAL WATCH” for details.

H/L KEY

Toggles the transmitter power level between High (5 Watts), Medium
(2.5 Watts), and Low (1 Watt) of output. Does not operate on “low power
only” and transmission-inhibit channels.
When operating on Canadian channel 13, or USA channels 13 or 67,
pressing this key momentarily toggles the power level from Low power
to Medium or High power.
Hold down this key to lock the displayed channel functions (except the
H/L, PTT, and SQL keys) so that they are not accidentally changed. The
key lock symbol “
Hold down until the key lock symbol “
dio.

” will appear, to indicate that the functions are locked.

” disappears to unlock the ra-

SCAN KEY

Starts scanning and Priority scanning of programmed channels. When
scanning, press and hold this key to turn on and off Priority scan (P is
shown on the left side of the display during Priority scanning).

PRESET KEY

Immediately recalls one of up to eight user preset memories for opera­tion (shown as 1-8 on the LCD). Pressing this key repeatedly scrolls
through the preset memory channels.

MEM KEY

Press to select a channel for scanning. Press this key again to delete a
memorized channel. (“MEM” appears on the LCD display during memory
operation).

HX370E Page 9

4.2 INDICATORS

Figure 4

Indicators

Channel Display

The operating channel is shown on the LCD in both the transmission and
reception modes.

A Indicator

Signifies ship-to-ship channels in USA or Canadian mode (whose counter­part in the International mode is a public correspondence (marine operator)
channel).

USA/INTL/CAN Indicator

Denotes the “band” of operation for the particular channel. “USA” indicates
the USA band; “CAN” indicates the Canadian band; and “INTL” indicates
the International band.

/ / Indicators

“ ” indicates High power (5 Watts); “ ” indicates Medium power (2.5 Watts);
and “
ceive-only channel.

” is for Low power (1 Watt). “Blank” in this location indicates a re-

P Indicator

Ch16 Priority Scan is activated.

DW Indicator

Dual watch is activated.

SCN Indicator

Scan is activated.

TX Indicator

Appears during transmission.

HX370EPage 10

MEM Indicator

The channel is in the transceiver’s “Scan Memory.”

Battery Indicator

When the battery charge is almost depleted, a “ ” icon will appear on the
display. When this icon appears, it is recommended that you charge the
battery soon.

No Icon Enough battery power

Lower battery power
Nearing depletion

(Blinking) Prepare to charge the battery

NOTE: The battery indicator should be used only as a guide in charging the

FNB-83/FNB-V57IS battery.

KEY Lock Indicator

When the “ ” symbol is shown on the LCD, all keys are disabled except
for the H/L, PTT and SQL keys.

HX370E Page 11

5. OPERATION

5.1 INITIAL SETUP

1. Install the belt clip on the transceiver, if desired.

2. Install the battery pack on the transceiver (see
figure 1 and section 3.2).

3. Install the antenna onto the transceiver.

NOTE

Water resistance of the transceiver is assured
only when the battery pack and antenna are
attached to the transceiver.

Installing the Quick Draw Belt Clip

1. Connect the hanger to the rear of the HX370E, with the notch point­ing directly up, using the supplied screw (Figure 6-a).

Use only the screw included
with the clip to mount the clip
to the back of the transceiver!

2. Clip the Quick Draw Belt Clip to
your belt (Figure 6-b).

3. To install the HX370E into the
Quick Draw Belt Clip, align the
hanger with the Quick Draw Belt
Clip and slide the HX370E into
its slot until a click is heard.

4. To remove the HX370E from the
Quick Draw Belt Clip, Rotate the
HX370E 180 degrees, then slide
the transceiver out from the Quick
Draw Belt Clip (Figure 6-c).

(a)

belt

(b)

«

Figure 5

Antenna Installation



Figure 6

(c)

Page 12

HX370E

5.2 RECEPTION

1. Turn the POWER/VOLUME CONTROL knob clockwise to turn the trans­ceiver on.

2. Press the SQL key, then press the [] key until the
SQL level is 00.

3. Turn up the POWER/VOLUME CONTROL knob un­til the noise or audio from the speaker is at a comfortable level.

4. Select a channel that has no signal being received (no one is transmit­ting on the channel) and where only noise is heard.

5. Press the SQL key, then press the [] key and stop immediately after
the noise disappears. This condition is known as the “Squelch Thresh­old.” If the
received.

6. To change channels, press the [] or [] key.

7. The LCD and keypad are illuminated for 5 seconds when any key is
pressed. The lamp automatically turns off in 5 seconds.

8. To “lock” the channel so that it is not accidentally changed, hold down
the H/L key for about one second. This locks the [] and [] buttons
and all the front panel controls except the H/L, PTT and SQL keys. The
“
that the keypad is locked. Hold down the H/L key for
about one second to unlock the keys. The “
bol will disappear from the display.

squelch

” symbol will appear on the display to indicate

is set to a higher level, weak signals may not be

” sym-

LMR (Land Mobile Radio) Channels

The HX370E is capable of PC programming 40 LMR (Land Mobile Ra­dio) channels by a dealer.

Contact your dealer for further details.

Typical display of LMR operation.

HX370E Page 13

5.3 TRANSMISSION

NOTE

Never key the transceiver without an antenna connected, as this may
cause damage to the transceiver.

1. Perform steps 1 through 7 of the RECEPTION discussion above.

2. Before transmitting, monitor the channel and make sure it is clear.

3. For communications over short distances, press the H/L key until “
displayed on the LCD. This indicates Low power (approximately 1 Watt).

NOTE

Transmitting on 1 Watt prolongs battery life. Low power (1 Watt)
should be selected whenever possible.

4. If using Low power is not effective, select Medium power (2.5 Watts) or
High power (5 Watts) by pressing the H/L key until
“

” (Medium power) or “ ” (High power) is dis-

played.

5. When receiving a signal, wait until the incoming signal stops before trans­mitting. The transceiver cannot transmit and receive simultaneously.

6. Press the PTT (Push-To-Talk) switch to transmit. The “TX” indicator is
displayed during transmission.

7. Speak slowly and clearly into the microphone. Hold the microphone about
½ to 1 inch away from your mouth.

8. When the transmission is finished, release the PTT switch.

” is

5.4 TRANSMIT TIME - OUT TIMER (TOT)

The HX370E is capable of PC programming TRANSMIT TIME - OUT
TIMER (TOT) by a dealer. Contact your dealer for further details.

While the PTT switch is held down, transmission time is limited to 5 minutes.
This prevents prolonged (unintentional) transmissions. About 10 seconds
before automatic transmitter shutdown, a warning beep sounds from the
speaker. The transceiver automatically switches to the receiving mode, even
if the PTT switch is held down. Before transmitting again, the PTT switch
must first be released, then pressed again. This Time-Out Timer (TOT) pre­vents a continuous transmission that would result from an accidentally stuck
PTT switch.

Page 14

HX370E

5.5 USA, CANADIAN, AND INTERNATIONAL BANDS

1. To change the operating band (channel set) of the transceiver, hold down
the 16/9 key and press the DW key. The band will change from USA, to
International, and to Canadian with each press.

2. “USA” appears on the LCD for the USA band, “INTL”
appears for the International band, and “CAN” ap­pears for the Canadian band.

5.6 SCAN

This transceiver provides a special “Scanning Memory Bank” which allows
you to designate certain channels for inclusion in a “loop” which will be
scanned at high speed. If an incoming signal is detected on one of the chan­nels in the scanning loop, the radio will pause on that channel, allowing you
to listen to the incoming transmission.

1. Select the desired channel to be included in the scanning loop using the
[]

or [] key.

2. Press the MEM key to store the channel into the
transceiver’s scanning memory. “MEM” will be dis­played on the LCD.

3. Repeat steps 1 and 2 for all the channels to be scanned.

4. To delete a channel from the transceiver’s scan memory, press the MEM
key again while the memorized channel is displayed. “MEM” will disap­pear from the display.

5. All channels programmed remain in the transceiver’s scan memory even
if the power is turned off. See section 5.19: “RESETTING THE
TRANSCEIVER’S MICROPROCESSOR” to clear all channels from the
transceiver’s scan memory.

6. Press the SQL key, then press the [] or [] key until background noise
is eliminated.

7. To start scanning, press the SCAN key. The scan proceeds from the
lowest to the highest programmed channel number and stops on chan­nels when a transmission is received. Scanning will resume when the
squelch closes after the incoming signal disappears at the end of the
transmission.

8. To stop the scan, press the SCAN, 16/9, or DW key.

HX370E Page 15

5.7 PROGRAMMABLE PRIORITY SCAN

The priority scanning feature allows the radio to scan while also keeping
watch on a particularly important “priority channel.” The following channels
can be set as the priority channel: 16, 09, and Preset Channels 1 through 8
(Preset Channels are described in section 5.13).

1. To set the priority channel, hold down the 16/9 key and press the MEM
key. The channel will change from 16 to 09 to Preset 1 to Preset 2 to
Preset 3 to Preset 4 to Preset 5 to Preset 6 to Preset 7 to Preset 8 with
each press of the MEM key. The displayed channel will be set as the
priority channel when the 16/9 key is released.

2. For priority scanning, hold down the SCAN key during normal scanning.
Scanning will proceed between the memorized channels and the priority
channel. The priority channel will be scanned after each programmed
channel. “P” is shown on the left side of the channel number during pri­ority scanning.

3. As an example of priority scanning, let us say that channels 06, 07, and
08 are memorized in the transceiver’s scan memory. Priority scanning
will proceed in the following sequence:

[

]

CH06

[

[



Priority Channel

]

CH08



[

Priority Channel

]

[

]

[

CH06

[



Priority Channel

]

[

Priority Channel] ……





CH07

]



4. Even when the transceiver stops and listens to the signal of a programmed
channel, the transceiver will “dual watch” between this channel and the
priority channel.

Therefore, your priority watching of the designated chan-

nel is not compromised when the scanner has paused on an active channel.



]

5.8 DUAL WATCH

The Dual Watch feature allows the radio to watch for a transmission on the
priority channel and another selected Marine channel until a signal is re­ceived. The priority channel is determined per the discussion in section 5.7
“PROGRAMMABLE PRIORITY SCAN” as described previously.

1. To start the Dual Watch feature, select a channel to be dual watched
with the priority channel and press the DW key. The
radio checks the priority channel for voice traffic
every one second. A small “DW” icon will be shown
blinking on the left of the display during scanning.

2. To cancel the Dual Watch feature, press the DW key.

HX370EPage 16

5.9 EMERGENCY (CHANNEL 16 USE)

Channel 16 is known as the Hail and Distress Channel. An emergency may
be defined as a threat to life or property. In such instances, be sure the
transceiver is on and set to CHANNEL 16. Then use the following proce­dure:

1. Press the microphone push-to-talk switch and say “Mayday, Mayday,
Mayday. This is , , ” (your vessel’s name).

2. Then repeat once: “Mayday, ” (your vessel’s name).

3. Now report your position in latitude/longitude, or by giving a true or mag­netic bearing (state which) to a well-known landmark such as a naviga­tion aid or geographic feature such as an island or harbor entry.

4. Explain the nature of your distress (sinking, collision, aground, fire, heart
attack, life-threatening injury, etc.).

5. State the kind of assistance your desire (pumps, medical aid, etc.).

6. Report the number of persons aboard and condition of any injured.

7. Estimate the present seaworthiness and condition of your vessel.

8. Give your vessel’s description: length, design (power or sail), color and
other distinguishing marks. The total transmission should not exceed 1
minute.

9. End the message by saying “OVER”. Release the microphone button
and listen.

10. If there is no answer, repeat the above procedure. If there is still no
response, try another channel.

11. To recall the previously-selected channel, press the 16/9 key again.

5.10 CALLING ANOTHER VESSEL (CHANNEL 16 OR 9)

Channel 16 may be used for initial contact (hailing) with another vessel.

However, its most important use is for emergency messages. This channel
must be monitored at all times except when actually using another channel.

It is monitored by the U.S. and Canadian Coast Guards and by other ves­sels. Use of channel 16 for hailing must be limited to initial contact only.
Calling should not exceed 30 seconds, but may be repeated 3 times at 2­minute intervals. In areas of heavy radio traffic, congestion on channel 16
resulting from its use as a hailing channel can be reduced significantly in
U.S. waters by using Channel 9 as the initial contact (hailing) channel for
non-emergency communications. Here, also, calling time should not exceed
30 seconds but may be repeated 3 times at 2-minute intervals.

HX370E Page 17

Prior to making contact with another vessel, refer to the channel charts in
this manual, and select an appropriate channel for communications after
initial contact. For example, Channels 68 and 69 of the U.S. VHF Charts are
some of the channels available to non-commercial (recreational) boaters.
Monitor your desired channel in advance to make sure you will not be inter­rupting other traffic, and then go back to either channel 16 or 9 for your initial
contact.

When the hailing channel (16 or 9) is clear, state the name of the other
vessel you wish to call and then “this is” followed by the name of your
vessel and your Station License (Call Sign). When the other vessel returns
your call, immediately request another channel by saying “go to,” the num­ber of the other channel, and "over." Then switch to the new channel. When
the new channel is not busy, call the other vessel.

After a transmission, say “over,” and release the microphone's push-to-talk
(PTT) switch. When all communication with the other vessel is completed,
end the last transmission by stating your Call Sign and the word “out.” Note
that it is not necessary to state your Call Sign with each transmission, only
at the beginning and end of the contact.

Remember to return to Channel 16 when not using another channel. Some
radios automatically monitor Channel 16 even when set to other channels
or when scanning; see your Owner's Manual.

5.11 OPERATING ON CHANNEL 13

Channel 13 is used at docks, bridges and for maneuvering in port. Mes­sages on this channel must concern navigation only, such as meeting and
passing in restricted waters. In emergencies and when approaching blind
river bends, High power is allowed. Pressing the H/L key will change the

(

power output from 1 Watt
(

)

will be selected. When the PTT switch is released, the transceiver will
revert to Low power. Press the H/L key again if you need High power on a
subsequent transmission.

)

to 5 Watts

( )

; if pressed again, 2.5 Watts

5.12 OPERATING ON CHANNEL 67

When channel 67 is used for navigational bridge-to-bridge traffic between
ships, High or Medium power may be used temporarily (in the USA band) by
pressing the H/L key. When the PTT switch released, the transceiver will
revert to low power.

HX370EPage 18

5.13 PRESET CHANNELS (1 ~ 8): INSTANT ACCESS

Eight user-assigned channels can be programmed for instant access.

5.13.1 Programming

1. Hold down the PRESET key, and press the [] or [] key (repeatedly, if
necessary) until the desired channel number (from among the regular
operating channels) is displayed.

2. With the desired channel number displayed, release the PRESET key.
The “1” notation will appear on the LCD display for 1 second, indicating
that the displayed channel is now saved in the Pre­set Channel “1” position. Then the preset channel
number will disappear and the display comes back
to the normal channel display.

Repeat steps 1 and 2 to program the desired channels into Preset Channels
1 ~ 8.

To delete a Preset Channel, hold down the PRESET key and press the [
or [] key until the Preset Channel number to be deleted is displayed, then
release the PRESET key.

5.13.2 Operation

Pressing the PRESET key toggles between Preset Channel 1, 2, 3, 4, 5, 6,
7, 8 and the last selected “regular” channel. Preset Channel 1 is repre­sented by “1” to the right of the channel number on the LCD for 1 second,
and channel 2 is represented by “2,” and so forth. Then the preset channel
numberr will disappear and the display comes back to the normal channel
display.

HX370E Page 19

]

5.14 SIMPLEX/DUPLEX CHANNEL USE

All channels are factory-programmed in accordance with FCC (USA), In­dustry Canada and International regulations. The mode of operation cannot
be altered from simplex to duplex or vice-versa. Simplex or duplex mode is
automatically activated, depending on the channel and whether the USA,
International or Canadian operating band is selected.

5.15 ENABLING S.O.S STROBE OPERATION

The S.O.S. STROBE feature utilizes the high-intensity strobe LED on the
front of the HX370E as a visual distress beacon. When enabled, the LED
blinks the internationally-recognized Morse Code “S.O.S.” message
(

–––

•••

summoning help from rescuers who may not be able to communicate with
you via radio.

1. Hold down the MEM key while turning the radio on to activate the emer-

2. The S.O.S strobe will not operate if the squelch is turned off (Squelch

3. To disable the S.O.S. strobe function, turn the radio off and back on

•••) at a rate of 5 words per minute. This can be very useful in

gency S.O.S. Strobe. Once the radio comes on, the BUSY/TX LED will
flash the Morse Code S.O.S. message repeatedly.

must be set to threshold), the radio is receiving a transmission or trans­mitting.

again.

HX370EPage 20

5.16 VOICE SCRAMBLER UNIT

The optional FVP-31 Voice Scrambler Unit permits secure voice communica­tions with stations within your network, which prevents others from listening
using normal communication equipment.

To activate the Voice Scrambler:

1. Turn the radio off.

2. Hold down the SQL key, then turn on the transceiver while still holding
down the SQL key to enter the Setup Mode.

3. Press the SQL key momentarily to select the Menu item (SCr).

4. Press the [] or [] key momentarily select the scramble code (SC1,
SC2, SC3, or SC4).

5. When you have completed your selection, press the SQL key to save
the new setting, and then press the PTT switch to exit to normal operation.

6. To disable the Voice Scrambler, select “oFF” in step 4 above.

Installation of the FVP-31

1. Make sure that the transceiver is off. Remove the hard or soft case, if
used. Remove the battery pack.

2. Locate the connector for the FVP-31 under the seal in the battery
compartment on the back of the transceiver, just peel off the seal.

3. Align the connector on the FVP-31 with the transceiver’s connector
and gently press the unit into place.

4. Place the Sponge Sheet (supplied with the HX370E) on the FVP-31.

5. Affix the new (supplied with the FVP-31) caution seal, and replace
the battery. Installation is now complete.

«

Peel off the Seal Locate Connector Affix the new Seal

HX370E Page 21

«

Figure 5

«

Sponge Sheet

5.17 SETUP MODE

The HX370E’s Setup Mode allows a number of the HX370E operating pa­rameters to be custom-configured for your operating requirements.

The Setup Mode is easy to activate and set, using the following procedure:

1. Turn the radio off.

2. Hold down the SQL key, then turn on the transceiver while still holding
down the SQL key.

3. “SEt” will appear on the display, indicating that the Setup Mode has been
activated.

4. Press the SQL key to select the Menu item to be adjusted (see below).

5. Press the [] or [] key select the status or value of the Menu item.

6. After completing your adjustment, press the SQL key to save the new
setting, and then press the PTT switch to exit to normal operation.

««

Voice Scrambler

Scan Display

««

Scan Lamp

«

“SQL” Key

¬

«

Channel Frequency

DW DisplayLamp Mode

Key Beep

««

Channel Name

«

HX370EPage 22

5.17.1 bEP (KEY BEEP

Function: Enable/Disable the Keypad beeper.
Available Values: ON/OFF
Default: ON

)

5.17.2 CHF (CHANNEL FREQUENCY

Function: Enable/Disables the Channel Frequency display.
Available Values: ON/OFF
Default: OFF

5.17.3 CHn (CHANNEL NAME

Function: Changes the channel name shown on the display.

1. Select the channel on which you wish to change the name before recall­ing this Menu item.

2. Turn the radio off.

3. Hold down the SQL key, then turn on the transceiver while still holding
down the SQL key.

4. “SEt” will appear on the display, indicating that the Setup Mode has been
activated.

5. Press the SQL key to select this Menu item “CHn.”

6. Press the [] or [] key to select the first character
(letter, number, or symbol) in the name you wish to
change, then press the MEM key to move to the next
character.

7. Repeat step 6 as many times as necessary to complete the name tag
(up to 12 characters).

8. After completing your adjustment, press the SQL key then PTT switch to
save the new setting and exit to normal operation.

)

)

5.17.4 dUL (DW DISPLAY

Function: Selects the Dual Watch scanning display mode.
Available Values: Normal/Special
Default: Special

When “Special” is selected, channel number which is the LCD shows re­ceived channel.

HX370E Page 23

)

5.17.5 LP (LAMP MODE

Function: Select the LCD/Keypad Lamp mode.
Available Values: KEY/Cnt (Continue)/OFF
Default: KEY

KEY: Illuminates the LCD/Keypad for 5 seconds when any key is

pressed.
Cnt (Continue): Illuminates the LCD/Keypad continuously.
oFF: Disables the LCD/Keypad illumination.

Key Continue Off

5.17.6 SnL (SCAN LAMP

Function: Enable/Disable the Scan lamp while scanning is paused.
Available Values: ON/OFF
Default: ON

)

)

5.17.7 SCn (SCAN DISPLAY

Function: Select the display mode while scanning.
Available Values: nor (Normal)/SPL (Special)
Default: nor (Normal)

nor (Normal): The channel number changes when scanning.
SPL (Special): The channel number only changes when the radio receives

a transmission. This lets you see the last channel on which
someone called.

5.17.8 SCr (VOICE SCRAMBLER) [Requires optional FVP-31

Function: Enable/Disable the Voice Scrambler.
Available Values: OFF/SC0/SC1/SC2/SC3
Default: OFF

Off Code “SC0” Code “SC2”

Page 24

)

Normal Special

Code “SC1”

]

Code “SC3”

HX370E

5.18 CLONING

The HX370E includes a convenient “Clone” feature, which allows the memory
and configuration data from one transceiver to be transferred to another
HX370E.

1. Turn both radios off.

2. Connect the (optional) CT-32 Clone Cable between the MIC/SP jacks of
the two transceivers.

3. Hold down the PRESET key and then turn on the
transceiver. Do this for both transceivers (the order
of switching the radios on does not matter); “CLn”
will appear on the display on both transceivers.

4. On the Destination transceiver, press the PRESET
key (“Cr” will appear on the LCD).

5. Press the 16/9 key on the Source transceiver; “CS”
will appear on the Source radio, and the data will
now be transferred.

6. If there is a problem during the cloning process, “CEr”
will displayed. Check your cable connections and
battery voltage, and try again.

7. If the data transfer is successful, the Destination transceiver will return
to normal operation; Turn both transceivers off and disconnect the Clone
cable. You can then turn the transceivers back on, and begin normal
operation.

HX370E Page 25

6. MAINTENANCE

The inherent quality of the solid-state components in this radio will provide
many years of continuous use. Take the following precautions to prevent
damage to the radio.

 Keep the microphone connected or the jack covered at all times to pre-

vent corrosion of electrical contacts;

 Never key the transmitter unless an antenna or suitable dummy load is

connected to the antenna receptacle.

 Use only STANDARD HORIZON-approved accessories and replacement

parts.

TROUBLESHOOTING CHART

SYMPTOM

The SCAN key
does not start the
scan.

The USA/INTL/
CAN modes do not
function.

Press and holding
the SQL key does
not eliminate back­ground noise.

Cannot change
any function.

Key Lock does not
function.

Indicator does not
light when charg­ing a battery.

PROBABLE

CAUSE

No channels
memorized.

Squelch is not ad­justed.

Proper operation
not followed.

Low battery.

Key Lock is on.

Proper operation
not followed.

Defective battery
FNB-83/-V57IS or
corroded contacts
on battery or
charger.

Use the MEM key to enter
desired channels into the
transceiver’s memory.

Adjust the squelch to thresh­old or to the point where noise
just disappears. Further ad­justment of the squelch con­trol may eliminate incoming
signals.

HOLD down the 16/9 key and
press the DW key.

Charge battery. Refer to sec­tion 3 of this manual.

Turn Key Lock off. Refer to
section 4.1. .

Hold down the H/L key for 1
second.

Contact your dealer.

REMEDY

Page 26

HX370E

7. CHANNEL ASSIGNMENTS

Tables on the following columns list the VHF Marine Channel assignments
for U.S.A. and International use. Below are listed some data about the charts.

1. VTS. Where indicated, these channels are part of the U.S. Coast Guard’s
Vessel Traffic System.

2. Alpha channel numbers, that is, channel numbers followed by the letter
A (such as Channel 07A) are simplex channels on the U.S.A. or Cana­dian channel assignments whose counterparts in the International as­signments are duplex channels. International channels do not use “Al­pha” numbers. If you call the Coast Guard on Channel 16, they will some­times ask you to “go to channel 22 Alpha.” This is a channel assigned
to U.S.A, and Canadian Coast Guards for handling distress and other
calls. If your radio is set for International operation you will go to Chan­nel 22 instead of 22A, and will not be able to communicate with the
Coast Guard. To use Channel 22A, your radio must be set for USA or
Canada operation, usually by a U/I/C (USA/International/Canada) con­trol or combination of controls. Channel 22 (without an “A” is an Interna-
tional duplex channel for port operations. Some radios indicate an “A”
adjacent to the alpha channels on the display; on others “Alpha” is not
indicated but the proper channel is selected based on the U/I/C setting.

3. Bridge-to-Bridge channels (for example, Channel 13) are for use by bridge
operators on intercoastal waterways and rivers. It is also used by marine
vessels in the vicinity of these bridges for navigation and for communi­cating with the bridge operators. Note that a limit of 1 Watt is specified
for these channels. See page 18 for additional information.

4. The S/D column on the chart indicates either S (simplex) or D (duplex).
Simplex means transmitting and receiving on the same frequency. Only
one party at a time can talk, unlike a telephone. Be sure to say “over”
and release your microphone push-to-talk switch at the end of each trans­mission. Duplex operation involves the use of one frequency for trans­mitting and a separate frequency for receiving. On channels specified
as duplex on the charts, correct mode of operation is established auto­matically by your radio when you select a channel; you cannot change
the mode. And you still must release the push-to-talk switch after each
transmission in order to listen to the radio.

5. Channels normally used by recreational boaters are those that include
the term “non-commercial” in the Channel Use column of the chart. Some

HX370E Page 27

of these are shared with other users and some are used only in certain
geographic regions.

6. Marine vessels equipped with VHF radios are required to monitor
Channel 16.

VHF Marine Channel

CH U C I S/D TX RX CHANNEL USE

01 X X D 156.050 160.650 Public Correspondence (Marine Operator

01A X S 156.050 Port Operation and Commercial. VTS in selected areas

02 X X D 156.100 160.700 Public Correspondence (Marine Operator
03 X X D 156.150 160.750 Public Correspondence (Marine Operator

03A X S 156.150 US Government only, Coast Guard

04 X D 156.200 160.800

04A X S 156.200

05 X D 156.250 160.850

05A X X S 156.250 Port operation. VTS in Seattle

06 X X X S 156.300 Inter-ship Sefety

07 X D 156.350 160.950

07A X X S 156.350 Commercial

08 X X X S 156.400 Commercial (Inter-ship only

09 X X X S 156.450

10 X X X S 156.500 Commercial
11 X X X S 156.550 Commercial. VTS in selected areas.
12 X X X S 156.600 Port operation. VTS in selected areas.
13 X X X S 156.650 Inter-ship Navigation Safety (Bridge-to-bridge
14 X X X S 156.700 Port operation. VTS in selected areas.
15 X S - - - 156.750 Environmental (Receive only
15 X X S 156.750 Commercial, non-commercial, ship movement (1 W
16 X X X S 156.800 International Distress, Safety and Calling
17 X X X S 156.850 State Controlled (1 W
18 X D 156.900 161.500 Port operation, ship movement

18A X X S 156.900 Commercial

19 X D 156.950 161.550 Port operation, ship movement
19A X S 156.950 US: Commercial
19A X S 156.950 Coast Guard

20 X X X D 157.000 161.600

20A X S 157.000 Port operation

21 X D 157.050 161.650 Port operation, ship movement

21A X X S 157.050 U.S. Government Only, Canadian Coast Guard

22 X D 157.100 161.700 Port operation, ship movement

22A X X S 157.100

VHF MARINE CHANNEL CHART

Public Correspondence (Marine Operator),
Port operation, ship movement

Pacific coast: Coast Guard, East Coast:
Commercial fishing

Public Correspondence (Marine Operator),
Port operation, ship movement

Public Correspondence (Marine Operator),
Port operation, ship movement

Boater Calling channel, Commercial & Non-commercial
(

Recreational

Canadian Coast Guard Only,
International: port operations and shipment

US and Canadian Coast Guard Liaison and Maritime
Safety Information Broadcasts announced on channel 16

)

)

)
)

)

)

)

)

)

Page 28

HX370E

CH U C I S/D TX RX CHANNEL USE

23 X X D 157.150 161.750 Public Correspondence (Marine Operator

23A X S 157.150 U.S. Government Only

24 X X X D 157.200 161.800 Public Correspondence (Marine Operator
25 X X X D 157.250 161.850 Public Correspondence (Marine Operator
26 X X X D 157.300 161.900 Public Correspondence (Marine Operator
27 X X X D 157.350 161.950 Public Correspondence (Marine Operator
28 X X X D 157.400 162.000 Public Correspondence (Marine Operator
60 X X D 156.025 160.625 Public Correspondence (Marine Operator

61 X D 156.075 160.675

61A X X S 156.075

62 X D 156.125 160.725

62A X S 156.125

63 X D 156.175 160.775

63A X S 156.175 Port Operation and Commercial. VTS in selected areas.

64 X X D 156.225 160.825

64A X X S 156.225 U.S. Government Only, Canadian Commercial Fishing

65 X D 156.275 160.875

65A X X S 156.275 Port Opeations

66 X D 156.325 160.925

66A X X S 156.325 Port Operations

67 X X X S 156.375 cations in lower Mississippi River. Inter-ship only,

68 X X X S 156.425 Non-commercial (Recreational

69 X X X S 156.475 Canada: Commercial fishing only,

70 X X X S 156.525 Digital selective calling (voice communications not allowed

71 X X X S 156.575

72 X X X S 156.625 Non-commercial (Inter-ship only

73 X X X S 156.675

74 X X X S 156.725

75 X S 156.775 Port Operations (Inter-ship only
76 X S 156.825

77 X X S 156.875 Port Operations (Inter-ship only
77 X S 156.875 Port Operations (Inter-ship only

78 X D 156.925 161.525

78A X X S 156.925 Non-commercial (Recreational

VHF MARINE CHANNEL CHART

Public Correspondence (Marine Operator),
Port operation, ship movement

U.S. Government Only, Canadian Coast Guard­Pacific Coast, Commercial Fishing-East Coast

Public Correspondence (Marine Operator),
Port operation, ship movement

Public Coast: Coast Guard;
East Coast: commercial fishing only

Public Correspondence (Marine Operator),
Port operation, ship movement

Public Correspondence (Marine Operator),
Port operation, ship movement

Public Correspondence (Marine Operator),
Port operation, ship movement

Public Correspondence (Marine Operator),
Port operation, ship movement

US: Commercial. Used for Bridge-to-bridge communi-

Canada: Commercial fishing, S&R

US: Non-commercial (Recreational),

International: Inter-ship, Port opertions and Ship movement

US, Canada: Non-commercial (Recreational),
International: Port opertions and Ship movement

US: Port Operations, Canada: Commercial fishing only,
International: Inter-ship, Port opertions and Ship movement

US: Port Operations, Canada: Commercial fishing only,
International: Inter-ship, Port opertions and Ship movement

Port Operations (Inter-ship only

Public Correspondence (Marine Operator),
Port operation, ship-movement

)

)
)
)
)
)
)

)

)

) (1W)
) (1W)
) (1W)
)

)

)

HX370E

Page 29

CH U C I S/D TX RX CHANNEL USE

79 X D 156.975 161.575 Port operation and Ship movement
79A X X S 156.975 Commercial

80 X D 157.025 161.625 Port operation, ship movement
80A X X S 157.025 Commercial

81 X D 157.075 161.675 Port operation, ship movement

81A X X S 157.075

82 X D 157.125 161.725

82A X X S 157.125 U.S. Government Only, Canadian Coast Guard Only

83 X X D 157.175 161.775 Canadian Coast Guard Only

83A X X S 157.175 U.S. Government Only, Canadian Coast Guard Only

83 X X D 157.175 161.775 Public Correspondence (Marine Operator

84 X X X D 157.225 161.825 Public Correspondence (Marine Operator

85 X X X D 157.275 161.875 Public Correspondence (Marine Operator

86 X X X D 157.325 161.925 Public Correspondence (Marine Operator

87 X X X D 157.375 161.975 Public Correspondence (Marine Operator

88 X X X D 157.425 162.025 Public Correspondence (ship-to-coast
88A X S 157.425 Commercial, Inter-ship Only

VHF MARINE CHANNEL CHART

U.S. Government Only ­Environmental protection operations.

Public Correspondence (Marine Operator),
Port operation, ship movement

)
)
)
)
)

)

The above BOLD channels are not for use of the general public in U.S. waters,
unless proper authorization is given.

Page 30

HX370E

Points of communica­tion (Intership and be-

)

tween coast and ship

Coast

unless otherwise indi-

transmit

cated)

Channel

designator

Carrier frequency

(

MHz

Ship

transmit

Port Operations

1

01A

156.050 156.050

1

63A

156.175 156.175

2

05A

156.250 156.250
65A 156.275 156.275
66A 156.325 156.325

3

12

156.600 156.600
73 156.675 156.675

3

14

156.700 156.700
74 156.725 156.725

4

77

156.875 Intership only.

12

20A

157.000 Intership only.

Navigational (Bridge-to-Bridge)

6

13

156.650 156.650

7

67

156.375 156.375

5

Commercial

1

01A

156.050 156.050

1

63A

156.175 156.175
07A 156.350 156.350

7

67

156.375 Intership only.

08 156.400 ........ Do.

09 156.450 156.450
10 156.500 156.500

3

11

156.550 156.550
18A 156.900 156.900
19A 156.950 156.950
79A 156.975 156.975
80A 157.025 157.025

8

88A

157.425 ........ Intership only.

14

72

156.625 ........ Internship only.

Digital Selective Calling

15

70

156.525 156.525

Noncommercial

17

68

156.425 156.425

16

09

156.450 156.450
69 156.475 156.475
71 156.575 156.575

72 156.625 ........ Intership only.

78A 156.925 156.925
79A 156.975 156.975 Great Lakes only.
80A 157.025 157.025 Do.

14

67

156.375 ....... Internship only.

Channel

designator

Carrier frequency

(

MHz

Ship

transmit

)

Coast

transmit

Points of communica­tion (Intership and be­tween coast and ship
unless otherwise indi­cated)

Distress, Safety and Calling

16 156.800 156.800 EPRIB

Intership Safety

06 156.300 ........ a. Intership, or b.

For SAR: Ship and
aircraft for the U.S.
Coast Guard.

Environmental

13

15

........ 156.750 Coast to ship only.

Maritime Control

9,10

17

156.850 156.850

Liaison, U.S. Coast Guard

11

22A

157.100 157.100 Ship, aircraft, and

Public Correspondence

(Marine Operator) channels

24 157.200 161.800
84 157.225 161.825
25 157.250 161.850
85 157.275 161.875
26 157.300 161.900
86 157.325 161.925
27 157.350 161.950
87 157.375 161.975
28 157.400 162.000

888157.425 162.025

coast stations of
the U.S. Coast
Guard and at Lake
Mead, Nev., ship
and coast stations
of the National
Park Service, U.S.
Department of the
Interior.

HX370E

Page 31

1. 156.050 MHz and 156.175 MHz are available for port operations and commercial
communications purposes when used only within the U.S. Coast Guard desig­nated Vessel Traffic Services (VTS) area of New Orleans, on the lower Missis­sippi River from the various pass entrances in the Gulf of Mexico to Devil’s Swamp
Light at River Mile 242.4 above head of passes near Baton Rouge.

2. 156.250 MHz is available for port operations communications use only within the
U.S. Coast Guard designated VTS radio protection areas of New Orleans and
Houston described in Sec. 80.383. 156.250 MHz is available for intership port
operations communications used only within the area of Los Angeles and Long
Beach harbors, within a 25- nautical mile radius of Point Fermin, California.

3. 156.550 MHz, 156.600 MHz and 156.700 MHz are available in the U.S. Coast
Guard designated port areas only for VTS communications and in the Great Lakes
available primarily for communications relating to the movement of ships in sec­tors designated by the St. Lawrence Seaway Development Corporation or the
U.S. Coast Guard. The use of these frequencies outside VTS and ship move­ment sector protected areas is permitted provided they cause no interference to
VTS and ship movement communications in thier respective designated sectors.

4. Use of 156.875 MHz is limited to communications with pilots regarding the move­ment and docking of ships. Normal output power must not exceed 1 watt.

5. 156.375 MHz and 156.650 MHz are available primarily for intership navigational
communications. These frequencies are available between coast and ship on a
secondary basis when used on or in the vicinity of locks or drawbridges. Normal
output power must not exceed 1 watt. Maximum output power must not exceed
10 watts for coast stations or 25 watts for ship stations.

6. On the Great Lakes, in addition to bridge-to-bridge communications, 156.650
MHz is available for vessel control purposes in established vessel traffic sys­tems. 156.650 MHz is not available for use in the Mississippi River from South
Pass Lighted Whistle Buoy “2” and Southwest Pass entrance Midchannel Lighted
Whistle Buoy to mile 242.4 above Head of Passes near Baton Rouge. Addition­ally it is not available for use in the Mississippi River-Gulf Outlet, the Mississippi
River-Gulf Outlet Canal, and the Inner Harbor Navigational Canal, except to aid
the transition from these areas.

7. Use of 156.375 MHz is available for navigational communications only in the
Mississippi River from South Pass Lighted Whistle Buoy “2” and Southwest Pass
entrance Mid-channel Lighted Whistle Buoy to mile 242.4 above head of Passes
near Baton Rouge, and in addition over the full length of the Mississippi River­Gulf Outlet Canal from entrance to its junction with the Inner Harbor Navigation
Canal, and over the ull length of the Inner Harbor Navigation Canal from its junc­tion with the Mississippi River to its entry to Lake Pontchartrain at the New Seabrook
vehicular bridge.

HX370EPage 32

8. Within 120 km of the United States/Canada border, in the area of the Puget Sound
and the Strait of Juan de Fuca and its approaches, 157.425 MHz is half of the
duplex pair designated as Channel 88. In this area, Channel 88 is available to
ship stations for communications with public coast stations only. More than 120
km from the United States/Canada border in the area of the Puget Sound and the
Strait of Juan de Fuca, its approaches, the Great Lakes, and the St. Lawrence
Seaway, 157.425 MHz is available for intership and commercial communications.
Outside Puget Sound area and its approaches and the Great Lakes, 157.425
MHz is also available for communications between commercial fishing vessels
and associated aircraft while engaged in commercial fishing activities.

9. When the frequency 156.850 MHz is authorized, it may be used additionally for
search and rescue training exercises conducted by state or local governments.

10. The frequency 156.850 MHz is additionally available to coast stations on the
Great Lakes for transmission of scheduled Coded Marine Weather Forecasts
(MAFOR), Great Lakes Weather Broadcast (LAWEB) and scheduled Notices to
Mariners or Bulletins. F3C and J3C emissions are permitted. Coast Stations on
the Great Lakes must cease weather broadcasts which cause interference to
stations operating on 156.800 MHz until the interference problem is resolved.

11. The frequency 157.100 MHz is authorized for search and rescue training exer­cises by state or local government in conjunction with U.S. Coast Guard stations.
Prior U.S. Coast Guard approval is required. Use must cease immediately on
U.S. Coast Guard request.

12. The duplex pair for channel 20 (157.000/161.600 MHz) may be used for ship to
coast station communications.

13. Available for assignment to coast stations, the use of which is in accord with an
agreed program, for the broadcast of information to ship stations concerning the
environmental conditions in which vessels operate, i.e., weather; sea conditions;
time signals; notices to mariners; and hazards to navigation.

14. Available only in the Puget Sound and the Strait of Juan de Fuca.

15. The frequency 156.525 MHz is to be used exclusively for distress, safety and
calling using digital selective calling techniques. No other uses are permitted.

16. The frequency 156.450 MHz is available for intership, ship and coast general
purpose calling by noncommercial vessels, such as recreational boats and pri­vate coast stations.

17. The frequency 156.425 MHz is assigned by rule to private coast stations in Alaska

for facsimile transmissions as well as voice communications.

HX370E Page 33

8. SPECIFICATIONS

8.1 General

Frequency range: 156 MHz - 163.275 MHz (Marine Band)

Channel Steps: 25 kHz

137 MHz - 174 MHz (LMR)

Channel Steps: 12.5 / 25 kHz

Frequency stability: ± 2.5 ppm (–30 °C to +60 °C)
Emission type: 16K0G3E, 16K0F3E, 11K0F3E
Antenna impedance: 50 Ohms
Supply voltage: 7.2 VDC
Current consumption: 200 mA (Receive)

40 mA (Standby, Saver Off)
TX: 1.4 A (H)/0.9 A (M)/0.5 A (L)

Operating Temperature: –30 °C to +60 °C
Waterproof rating: 30 minutes @ 1 meter depth (JIS 7)
Case Size (W x H x D): 58 x 120 x 30.5 mm
Weight (Approx): 380 g with FNB-83

8.2 Transmitter

RF output power: 5 W/2.5 W/1 W @7.2 V
Modulation Type: Variable Reactance
Max deviation: ±5 kHz (Wide)

±2.5 kHz (Narrow)

Conducted Spurious emissions

FM Hum and Noise: 40 dB

Microphone impedance: 2 k-Ohm

: 0.25 µW (–36 dBm)

8.3 Receiver (ETS300-086)

Circuit type: Double-conversion superheterodyne
Intermediate Frequencies: 1st: 21.7 MHz

2nd: 450 kHz

Sensitivity: 0.35 µV 20 dB SINAD

Adjacent channel selectivity
Intermodulation response
Spurious and Image Rejection

Hum and Noise: 40 dB
Selectivity: 12 kHz / 25 kHz (–6 dB/–60 dB) (Wide)

AF output:

Page 34

: 70 dB (Wide) / 60 dB (Narrow)

: 65 dB

: 70 dB

6 kHz / 18 kHz (–6 dB/–60 dB) (Narrow)

600 mW @ 16 Ohm for 10 % THD (@7.2V)

HX370E

MEMO

HX370E Page 35

MEMO

Page 36

HX370E

HX370E

VERTEX STANDARD CO., LTD.

4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan

VERTEX STANDARD

US Headquarters

10900 Walker Street, Cypress, CA 90630, U.S.A.

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VERTEX STANDARD HK LTD.

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Copyright 2004
VERTEX STANDARD CO., LTD.
All rights reserved.

No portion of this manual
may be reproduced
without the permission of
VERTEX STANDARD CO., LTD.

Printed in Japan