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INTRODUCTION
Congratulations on your purchase of a Stryker 10 meter mobile amateur transceiver.Your Stryker is designed to provide
years of enjoyment and trouble-free service. There are many features and functions designed into this transceiver. To ensure
that your investment is enjoyed to its fullest extent, please take a few moments and thoroughly
read this manual.
LIMITED WARRANTY
Stryker Amateur Radio warrants this product to be free of defects for a period of three (3) year from the original date of
purchase. You must activate your warranty by completing the included form or online at www.strykerradios.com/register.
aspx This warranty is non-transferable. This limited warranty is subject to repair or replacement of defective components only.
This warranty is void if the radio has been tampered with or misused. If your Stryker Radios needs repair any time during the (3)
year warranty period please visit our website: www.StrykerRadios.com to obtain an RA number or call 910-221-1086 between
the hours of 10 a.m. – 5 p.m. Eastern standard time. If you do need service after your warranty has expired you can still send
your radio to us for repair. Our rates are very reasonable and you can rest assured that your radio will be xed correctly.
IMPORTANT: RETAIN YOUR SALES RECEIPT
You will need to include a copy of your original sales receipt along with your radio when sending it in for warranty repair.
INSTALLATION
1. Contents
Unpa ck and inspect your S tryke r SR- 955HPC for m is sing or
damaged Components.
Quantity Description
1 Stryker SR-955HPC Transceiver
1 Microphone
1 DC Power Cord with Inline Fuse
1 Mounting Bracket with Hardware
1 Microphone Hanger with Hardware Set
Location
Plan the location of the t ra nsceiver and microphone bra ck ets
before starting the installation. Select a location that is convenient for
operation and does not interfere with the driver or passengers in the
vehicle. In automobiles, the transceiver is usually mounted below the
dash panel, with the microphone bracket beside it.
Mounting
Your mobile radio is supplied with a universal mounting bracket.
When mounting the bracket and radio to your car, make sure it is
mechanically strong. Also provide a good electrical connection to the
chassis of the vehicle. Proceed as follows to mount the transceiver:
Mount the Transceiver
After you have determined the most convenient location in your
vehicle, hold the mobile radio with the mounting bracket in the exact
location desired. If nothing will Interfere with mounting it in the desired
position, remove the thumbscrews and use the mounting bracket as
a template to mark the holes for the mounting screws. Before drilling
the holes, make sure nothing behind the surface will be damaged or
interfere with the installation.
Electrical Connections
The Stryker SR955 is designed to work on any 13.8 volt DC, negative
ground electrical source. The condition of a vehicle’s electrical system
can have a profound affect on the performance of the radio. A low
battery, worn generator/alternator, or poor voltage regulator will seriously
impair the performance of the transceiver. Any of the above conditions
could result in a high level of receiver noise generation or a Substantial
loss of the transmitter’s RF output. Make sure that all these components
on your vehicle’s electrical system are in good condition prior to installing
the transceiver.
CAUTION! VOLTAGE EXCEEDING 15 Volts DC WILL DAMAGE THE
RADIO.
MEAS URE VOLTAGE AT B ATTE RY TERM INA LS , WITH VEHICLE
RUNNING, PRIOR TO INSTALLATION!
1.
Before making any electrical connections make sure the volume (VOL)
control is in the“OFF” position.
2.
Connect the positive (+) red wire of the DC power cord to a positive
13.8-volt source at the vehicle fuse block. If connecting to the fuse
block, it is recommended that a switched power source be used so
that the power to the Transceiver is disconnected when the vehicle is
off. This eliminates the possibility the transceiver draining the vehicle’s
battery.
3.
Connect the negative (-) black wire to a metal part of the vehicle’s
fra me, or ch assis ground. Make s ure that this is a good gro und
connection.
Antenna Connections
The Stryker SR-955 has a jack in the rear for a standard PL-259
antenna plug. If you are looking for the most range for your transmission,
use a vertically polarized, quarter-wave length antenna. If antenna height
is a problem, you may use a shorter, loaded-type whip antenna although
you can expect some loss of transmission range. Your antenna should
always be adjusted for the lowest possible SWR (1.5 or less.) To adjust
your antenna for best performance, you can take advantage of your
1
2
radio’s built in SWR meter. Failure to properly adjust your antenna(s)
will diminish your operational range and could result in damage to your
radio. Damage that results from operating with high SWRs is not covered
under your factory warranty!
Tuning the Antenna for Optimum SWR
Beca use s uch a wide vari ety o f bas e a nd mobi le antenna s are
available, this section will concern itself only with the usual types of
mobile adjustable antennas.
Antenna length is directly related to signal frequency. Therefore, it must
be tuned to resonate optimally throughout the frequency range of the
transceiver.
Lower frequencies require a longer antenna than higher frequencies.
Due to the various methods of adjusting antennas for proper SWR, we
have chosen what we think is the optimum method:
A. Antennas with adjustable screws (setscrews).
1.
Start with the antenna extended and tighten the setscrew lightly
enough so that the antenna can be lightly tapped with your nger for
easy adjustment.
2.
Set your Stryker radio to your desired operating frequency or the
center of the range of frequencies you plan to use. Press the PTT
(Press-To-Talk) switch, and tap the antenna (making it shorter).
The SWR meter will show a lower reading each time the antenna
is tapped. By continuing to shorten the antenna, you will notice the
SWR reading will reach a low point and then start rising again.
This means that you have passed the optimum point for the middle
frequency.
3.
Extend the antenna a short distance and again follow the procedure
above.
4.
When the lowest point has been reached, switch to the lowe st
fre qu ency you plan t o operate on and then to the highest and
compare SWR readings. They should be almost equal.
B. Antennas that must be cut to proper length.
1.
Follow the procedure as in A above, but adjust the length by cutting
in 1∕8" increments until a good match is obtained.
2.
Be very careful not to cut too much off the antenna at one time.
Once it is cut, it can no longer be lengthened.
3.
The whip is easily cut by filing a notch all the way around, then
breaking the piece off with pliers.
NOTE:
The proper setting is achieved when the SWR is 1.5 or below and when it has
the same reading for the low and high frequencies in the range you plan to use.
External Speaker
The externa l spe aker jack (EXT ) on the r ear p anel is used for
remote receiver monitoring. The external speaker should have 8 ohms
impedance and be able to handle at least four watts. When the external
speaker is plugged in, the internal speaker is disabled.
Programming Jack
Using this jack and the supplied USB preprogramming cable you
can cha ng e many of the default o pt io ns that your radio has. Our
programming software has easy to follow on screen instructions for
making these changes.
Public Address
To use the transceiver as a public address system, connect an external
8 ohm speaker that is able to handle at least four watts to the PA jack on
the rear panel. Direct the speaker away from the microphone to prevent
acoustic feedback. Physical separation or isolation of the microphone
and speaker is important when operating the PA at high output levels.
Improper Radio Adjustments
Service by unqualified technicians could result in damage to your
radio. Never allow anyone to disable your radio’s modulation limiting
circ uit ry. We h ave desi gne d y our radi o f or optim al perfo rmanc e
and durability. Disabling this circuitry could damage your radio and
potentially void your factory warranty!
For further service information please visit www.StrykerRadios.com.
3
Operating Guide
1.
FUNC:
Pressing this button in for approximately three seconds allows
you to access the function menu.
2.
Mon:
The variable Mon control (talk back) is used to monitor your own
voice.This can be used to compare different microphones. To increase
the volume of the talk back rotate the control clockwise. To decrease
rotate counterclockwise. To turn off the talk back rotate the control
completely counterclockwise.
3.
Transmit Power or PWR
your power output.
4.
Mode Switch:
or PA mode. The PA feature allows the radio operator to use their radio
as a public address system.
5.
Dimmer Switch:
panel. To adjust the brightness move this switch to the left “DIM”
setting and then rotate the channel selector clockwise for more light or
counter-clockwise for less.
6.
HIC:
This is the Hi-Cit Filter, once this function is enabled, the radio
will cut out high frequency interference. Use is dependent on reception
conditions.
7.
RB:
This switch controls the "roger beep" circuitry. Simply put the
roger beep is a tone that sounds when a radio operator un-keys their
microphone. When the switch is on the RB position the roger beep is
turned on. When moved the switch is moved to the middle position it is
switched off.
8.
PRG:
activated when the RB switch is on. It also allows you select if you’d
like the auto squelch activated and lets you add specic channels to
scanned when the scan feature is activated. See section “PRG Menu”
for more details on this function.
9.
TSQ-
This switch is used to activate the optional CTCSS module. This
module is sold separately.
This switch allows you to operate in AM, FM, USB, LSB
This switch allows you to select which roger beep is will be
- This variable control allows you to adjust
This switch controls the brightness for the front
10.
CLA:
Indicates what mode the clarier is in. R would indicate receive
only, R & T indicates it will function on both transmit and receive and
T means only on transmit.
11.
Channel Display:
selected channel.
12.
Echo:
The Echo switch turn the echo on. A big advantage to this is
you can turn it off and then back on with the switch without the need
to adjust your volume & delay potentiometer. To turn the echo off
simply move the switch to the middle position.
13.
Color:
Pressing this button changes the color of the front panel and
display. Each time it’s pressed it will change to a new color. Pressing
this button allows you to select the color loop mode where the radio
will automatically cycle through all of the colors.
14.
Scan:
Pressing this button enables the radio to scan through all
channels until it nds one that has a strong enough signal to break
through the squelch threshold.
15.
Band:
Move this switch all the way to the left and a band will be
displayed on the LCD meter. To change bands rotate the channel
selector until you reach the desired band, then move this switch back
to the center position.
16.
Microphone Input:
female 4 pin connector. For further wiring information please see the
next page of this manual.
17.
VFO:
The VFO switch allows you to move through the radios entire
frequency range without changing bands. To use VFO mode move
this switch to all the way to the right position.
18.
On/Off Volume Control:
and to set the desired listening level. During normal operation, the
VOLUME control is used to adjust the output level obtained either at
the transceiver speaker or the external speaker, if used.
19.
Squelch:
background noise in the absence of an incoming signal. For maximum
receiver sensitivity it is desired that the control be adjusted only to the
This co ntrol is used to cut off o r eli min ate rece iver
The channe l display indicate s the current ly
The Stryker SR955 accepts microphones with a
Turn clockwise to apply power to the unit
4
point where the receiver background noise or ambient backgrounds
noise is eliminated. Turn fully counterclockwise then slowly clockwise
until the receiver noise disappears. Any signal to be received must
now be slightly stronger than the average received noise.
20.
Microphone Gain:
PA modes. This controls the gain to the extent that full talk power is
available several inches away from the microphone.
21.
RF Gain:
amplifier under strong signal conditions. For maximum receiver
se nsi tiv ity th is contr ol should be turn all th e w ay to the righ t
(clockwise).
22.
Noise Blanker / ANL Switch:
the noise Blanker circuits are activated. The Noise Blanker is very
effective in eliminating repetitive pulse type noise usually associated
with ignition systems. The ANL position activates both the Noise
Blanker and Automatic Noise Limiter (ANL) Circuitry.
23.
Echo Volume:
increase the echo volume, rotate the control clockwise.
24.
Echo Delay:
this is you can turn it off and then back on with the switch without the
need to adjust your volume & delay potentiometer. To turn the echo
off simply move the switch to the middle position.
25.
Fin:
menu section for specific options related to this control. With the
clarier in the default mode, the ne knob would be used to ne tune
your receiving frequency. In general this is typically on used on SSB.
26.
COA:
default mode, the coarse knob would be used in conjunction with the
ne knob to tune in the station you communicating with. Both knobs
increase frequency when turned clockwise and decrease when turned
counter clockwise.
27.
Channel Selector:
and receive channel.
This control is used to reduce the gain of the RF (receive)
This is the ne control for the clarier. Please refer to the function
This is the coarse control for the clarier. With the clarier in
Adjusts the microphone gain in the transmit and
When this switch is in the NB position
Varies the volume or number of echo repetitions. To
The Echo switch turn the echo on. A big advantage to
This control is used to select the desired transmit
OPERATION GUIDE
For detailed descriptions of all functions please see page.
1.
Function Menu Button
2.
Monitor (Talkback)
3.
RF Power Output Control
4.
Mode Selector Control
5.
Dimmer Switch
6.
Hi-Cut Receive Filter
7.
Roger Beep Switch
8.
Program Switch
9.
CTCSS Switch
10.
Clarier Mode
11.
Channel Display
12.
On/Off Echo Switch
13.
Display Color Button
14.
Channel Scan Button
15.
Band Mode Switch
16.
Microphone Jack
17.
VFO Mode Switch
18.
Receiver Volume
19.
Receiver Squelch
20.
Microphone Gain
21.
RF Gain
22.
Noise Blanker / ANL
23.
Echo Volume
24.
Echo Delay
25.
Fine Clarier Adjustment
26.
Coarse Clarier Adjustment
27.
Channel Selector
1
STRYKER
FUNC
SCAN
COLOR
SR-955HP
14
13
FM
PA
B A N D V F O
17
4
AM
USB
DIM HIC
VOL SQ
19
18
6
5
10 Meter Amateur Mobile Transceiver
LSB
MIC RF VOL DE L
GAIN
20
23
MON PWR
15
16
ANL + NB
TONE CLAR
22
21
7
RB PRG
24
23
8
TSQ ECH
FIN CO A
25
11
9
10
12
5
FREQUENCY
26
27
6
ALTERNATE MICROPHONES AND INSTALLATION
For best results, the user should select a low-impedance dynamic
type microphone or a transistori zed microphone. Transistoriz ed
type microphones have low output impedance characteristics. The
microphones must be provided with a four-lead cable. The audio
conductor and its shielded lead comprise two of the leads. The third
lead is for transmit control and fourth is for receiving control.
Th e m icr opho ne sho uld provi de t he fun cti ons sho wn in the
schematic below.
4 WIRE MIC CABLE
Pin Number
1
2
3
4
Mic Cable Lead
Audio Shield
Audio Lead
Transmit Control
Receive Control
Before beginning the actual wiring, read carefully the circuit and wiring
information provided with the microphone you select. Use the minimum
heat required in soldering the connections. Keep the exposed wire
lengths to a minimum to avoid shorting when the microphone plug is
reassembled.
If the microphone to be used is provided with pre-cut leads, they must
be revised as follows.
1.
Cut leads so that they extend 7/16" beyond the plastic insulating jacket
of the microphone cable.
2.
All leads should be cut to the same length. Strip the ends of each wire
1/8" and tin the exposed wire.
To wire the microphone cable to the plug provided, proceed as follows:
1.
Remove the retaining screw.
2.
Unscrew the housing from the pin receptacle body.
3.
Loosen the two cable clamp retainer screws.
4.
Feed the microphone cable through the housing, knurled ring and
washer as shown Figure 2.
7
Function Menu Navigation
The function menu allows you to customize many features as well as
controls that your Stryker SR-955HP has to offer. To access the function
menu press and hold the FUNC Button for approximately two seconds
until the LCD meter displays FIN, then release the function button. Then
press the FUNC button again to choose a difference function menu item.
Turning the channel selector knob will change the value of the function.
FIN: This allows you to adjust the range of your ne clarier control. By
rotating the channel selector while FIN is displayed in the function menu
you can choose from the following options for this control; Off, 0.5 Khz,
1.5 Khz and 5 Khz. For example if you choose 0.5Kthe ne switch will
change the present frequency by±0.5K.
FinM: This features allows you to select when you want the ne clarier
control to be active. Options are: R which means the ne clarier will only
change the RX frequency, T means the ne clarier only changes the TX
frequency and R&T means it will change both the RX & TX frequency.
COA: This controls the range of the coarse clarier adjustment. Option
are; Off meaning the coarse adjustment will not function, 100 Htz, 1 Khz,
5 Khz or 10 Khz.
CHS: Channel step can be changed in this setting, option are; 1 Khz,
10 Khz, 100 Khz & 1 Mhz. This setting is used when the radio is in VFO
mode.
Beep: The default setting for this is on, but many user may wish to
turn this off as well. This function basically emits an audible beep when
a feature is turned on or off, for example moving the NB switch to NB+
position.
TOT: This menu is used to set transmitting limit time. When pressing
PTT key at a single time longer than the due time setup in advance, the
radio would stop transmitting automatically and the speaker will emit a
voice prompt until the PTT key is released. Then, the radio can transmit
again.
Options: 30-600s Step: 30s Default: 180s
SCM: This menu is use d to s et the Scan mode. O pt ions are as
follows: SQ: When SQ is selected, scan would stop when a valid signal
is detected. The radio would resume scanning after signal disappears
for 5s. TI: When TI is selected, scan would stop when a valid signal is
detected. The radio would resume scanning 5 seconds later, whether
signal disappears or not. Default: SQ
SCT: Scan resume timeWhen the scanned signal disappears, how
many seconds before it will start to scan again. Options: 5S 10S 15S.
TSR: Choose whether to enable the Transmitting SWR Protection
function or not.
ON: When ON is selected, the radio will detect the SWR of your
antenna. Once the SWR is beyond the SWR limit set in advance, the
radio would stop transmitting automatically and the speaker will emit a
voice prompt. Then, “HI S” icon will display on the LCD to remind you
that the antenna SWR is too high.
OFF: When OFF is selected, the SWR Protection function is disabled.
NOTE: To protect the radio from long transmission under high SWR, the
radio would automatically start SWR Protection once the SWR Value is
higher than 20:1.
TDC: Choose whether to enable Voltage Protection function or not.
ON: When ON is selected, the radio will detect the supplied voltage.
Once the voltage surpasses the limit that was set in advance, the radio
would display “DC LO” or “DC HI” to remind you that the voltage is not
in normal state. Meanwhile, the radio will prohibit transmitting and emit a
beep sound.
OFF: When OFF is selected, the Power Supplying Voltage is disabled.
Default: ON
LCD: This option lets you choose if you’d like to display the following
on the LCD meter. The rst option is to display the model name of the
radio, the second option will display the DC voltage present at the power
jack and the third option will display the model name during receive and
the voltage during transmit.
LOPT: The last option in the function menu is the the back light scan
intervals, you can choose from 0.5 - 10 seconds.
PRG Menu Navigation
With the RG * PRG switch in the right position the LCD meter will
display “1. Scan” rotating the channel selector will give you a second
option “2. RB”.
Scan - With the scan option displayed on the meter, press the FUNC
button once and “Scan Add” will be displayed on the meter, pressing the
FUNC button again will add your current channel to the list of channels
to be scanned when the scan feature is activated. To delete a channel
from the scan list do the following. When “Scan Add” is display on the
meter, rotate the channel selector once to the right and “Scan Del” will be
displayed. Press the FUNC button and this channel will now be deleted
from the scan list.
8
RB - This function lets you choose from a total of 6 roger beep. When
the “2.RB” is displayed on meter, press the FUNC button once. You
should now see “RB 1” rotating the channel selector to the right allows
you to cycle through the roger beeps (RB 1-6). To select a roger beep
press the FUNC button once. Now selected roger been will be activated
when the “RB - PRG” button in in the left position.
A1.0-12/03
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