Users Manual
Solid-State HF Band
600W Linear Power Amplifier
Model HL-1.1K
FX
1. Introduction
Thank you for purchasing the HL-1.1KFX.
This compact and lightweight desktop HF linear power amplifier has a maximum input
power of 1.35kW. Our solid-state broadband power amp technology makes it the smallest
and lightest in the industry in its class.
Typical output power is 600W PEP (SSB, CW) with the drive power of 65-90W.
It is best suited for the DX-pedition use due to its light and compact design.
2. Cautions
2-1 The amplifier is cooled by forced airflow. Several inches of clearance on the top
and the rear wall are necessary to allow for smooth air intake into the fan. Do not
block the air vents on the top cover.
2-2 Keep the amplifier out of direct sunlight, in a cool dry environment.
This unit is not corresponded to protection against dust, water , condensation, nor
vibration.
2-3 Internal high voltages (AC, DC and RF), are present at all times, ON AIR or OFF.
Internal access should be limited to avoid injury.
2-4 Turn off the AC main power immediately upon any unusual sounds, sights, or
odors. Check the multimeter readings of Vd and Id, the fuses and all cable
connections around the amplifier. Please notify the dealer or the factory of any
problems.
2-5 For your safety, do not operate the amplifier without adequate grounding. A
proper ground connection will result in peak performance and stability, in
addition to reduced RF strays or noises.
2-6 To eliminate the RF interference to such home appliances as TV, FM radio,
telephone sets, and etc., it is recommended that clamp-on ferrite cores be
inserted at both ends of the remote control cable, ALC cable, coaxial jumper cable,
and antenna cables, as needed. Also, a common mode AC line filter (near the AC
outlet), and in-line low pass filters on the antenna coaxial cable (as necessary),
are recommended.
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2-7 The amplifier has fast acting sophisticated protection circuits. Please note,
however, any such actions that cause the same fault to occur repeatedly, will lead
to failure of the valuable final power FET transistors.
2-8 Before checking inside the amplifier, be sure to wait a few minutes for the high
DC voltage to discharge (monitor Vd meter reading). The potentiometers for RF
power detector, protection circuits, FET bias voltage circuit, etc., are precisely
adjusted at the factory, and should not be altered. Doing so, would require
readjustment with precision measuring instruments.
2-9 The DC power supply section consists of most efficient and sophisticated
switching mode circuit. It accepts the wide AC line voltages ranging from AC
100V up to 260V. Since the line voltage is detected and selected automatically,
you do not have to worry about the tap change of internal power transformer
whichever country you will travel. Be sure to verify capacity of AC line fuse
before you plug the AC power cord into the outlet.
2-10 Before starting the amplifier, be sure to connect a dummy load (50 ohms, 600W
min.) or a well-adjusted antenna to the output terminal. Operating without any
load will cause extreme stress to the RF power FET’s, although protection
circuits should work under critical conditions.
2-11 Required drive power is slightly less than 100W to obtain the full 600W output.
Do not attempt to operate with excessive drive from a high power transceiver.
2-12 Keep the aluminum heat sink and air openings free from dust and blockages.
Periodic cleaning will prevent degraded cooling efficiency.
2-13 For long continuous operation in RTTY/FM modes, it is recommended that you
reduce the RF drive levels by 20% to 30% lower output than CW/SSB modes.
2-14 To prevent damage to the precision electronic components, avoid extreme
physical shock to the amplifier. If factory service is required, the amplifier should
be shipped using the original box and packing materials.
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3. Features
3-1 Our solid-state broadband design engineers worked to make the HL-1.1KFX, the
lightest and most compact 600W out portable HF amplifier in the industry. This
world-class compact 600W HF amplifier is the easiest to handle and operate
anywhere in the world.
3-2 The amplifier’s main PA section includes 4 high pow er MOS FET SD 2933 /
THP2933, resulting in 600W PEP (SSB/CW max.) on HF. The amplifier’s
broadband characteristics require no further tuning once t he operating band is
selected.
3-3 The amplifier allows operation in full break-in CW mode due to the use of the
amplifier’s high-speed antenna relays (made by Panasonic).
3-4 With the unique duct structure design and the powerful blower fan, the
aluminum heat sink block for RF PA module (and other components), are
effectively cooled. The fan’s quiet operation allows for even the weakest DX
signals to be heard.
3-5 The amp utilizes a sophisticated circuit to run the various high speed protection
circuits such as overdrive, high antenna SWR, DC overvoltage, band miss-set etc.
3-6 This amplifier is compatible with wide AC line voltage ranging from AC 100V to
260V. Although AC line voltage is automatically selected, be sure to install proper
fuse into AC line fuse holder.
3-7 For the safety of the operator , an Interlock system is employed. The AC power is
shut down if the top cover is removed, and the automated safety interlock is
activated.
3-8 An analog multimeter allows the operator to monitor Pf (Forward output power),
Pr (Reflected power), Vd (Drain voltage of power FET), Id (Drain current) etc.
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4. Specifications
Frequency 1.8~29.7 MHz all amateur bands including WARC bands
Mode SSB, CW (RTTY)
RF Drive 65~90W typ. (100W max.)
Output Power 600W PEP typ. (RTTY 400W max.)
Drain Voltage 48V
Drain Current 30A max.
Input Impedance
Output Impedance
Final Transistor SD2933 / THP2933 x 4
Circuit Class AB parallel push-pull
Cooling Method Forced Air Cooling
Multi-meter
Input/Output Connectors UHF SO-239
AC Consumption 1.4kVA max. when TX
Dimension 232 x 145 x 392 mm, 9.1 x 5.7 x 15.4 inches (WxHxD)
Weight Approx. 9.5kgs. or 22.5lbs.
Accessories AC Power Cord x 1
50Ω (unbalanced)
50Ω (unbalanced)
Output Power Pf 1kW
Reflected Power Pr 100W
Drain Voltage Vd 60V
Drain Current Id 50A
AC 200~260V, 50/60Hz 7.5A max. AC Power
AC 100~130V, 50/60Hz 15A max.
Coax Jumper Cable (with PL259’s) x 1
RCA Plug x 2
Spare Fuse 8A x 2 (for AC200V line)
Spare Fuse 15A x 2 (for AC100V line)
Spare Fuse 15A x 2 (for F202, F203 of PC1662V power amp board)
Spare Fuse 1A x 1 (for PC1662V power amp board) (miniature fuse)
Spare Fuse 2A x 1 (for PC1785V control board) (miniature fuse)
Users Manual
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5. AC Line Voltage
5-1 Although the amplifier is designed to work with both AC 115V (100-130V) and
AC 230V (200-260V), for stability we recommend operation from AC 230V.
5-2 The correct AC plug (not included in the package) must be obtained locally due
to the AC plug variations worldwide.
5-3 The AC line fuse has been factory preset for 115V use (or as requested by the
customer at the time of order). If you wish to change to AC 230V, change the fuse
to 8A. For your safety, before making this change, be sure to pull the AC plug
from the AC outlet to avoid injury.
NOTICE
Please note the followings when you are using
AC100V line (AC100V~120V).
NEVER EXCEED OUTPUT POWER OF 500W,
WHEN RUNNING THE AMP FROM AC100~120V LINE.
Otherwise, over-current protection completely shu ts down the drain voltage power
supply for five minutes before it gets resettable.
When this protection works, O.DRI VE lamp lights and HL-1.1KFX will enter the
through state, the reset of the amp being disabled for five minutes.
To restart th e amp, turn the POWER switch OFF, and wait for 5 (five) m inutes. Then
turn the power ON.
If the protection works too often, please take one or all of the following measures.
① Lower the drive power of the transceiver.
② Connect the ALC line. Adjust the ALC Output Adjustment Knob on the rear panel
so that the drain current (ID) will never exceed 26.0A on any frequency.
③ Change to AC200~240V line.
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6-A. Front Panel Description
MODEL
1
FUSE
8
10
O.HEAT
FX
9
14 12
TOKYO HY‑POWER
POWER
OFF
13
OPER ON AIR
STBY
FAN
I
D
11
METER BAND
O.DRIVE PR
2134 576
SOLID STATE LINEAR AMPLIFIER
PROTECT
O.VOLT
HL‑1. K
①POWER : Main power switch to turn AC power on and off.
②POWER
(LED)
: Green LED lights when power is turned on.
③OPER. : OPERATE/STAND-BY switch. At OPERATE, the amplifier is ready to
go into ON AIR (TX) mode and at STBY, it is on STAND-BY mode.
④ON AIR
⑤O.DRIVE
(LED)
: Green LED lights when the amplifier is in transmit (TX) mode.
(LED)
: When overdrive or band miss-set is detected, LED lights to indicate
the protection circuit has worked.
⑥PR
(LED)
: LED lights when reflected power from antenna exceeds 70W to
indicate protection circuit has worked.
⑦O.VOLT
(LED)
: When the DC drain voltage of the FET (Vd) is too high, the LED lights
to indicate the protection circuit has worked.
⑧FUSE
(LED)
: LED lights when the 15A glass fuse has blown from excessive Id.
(Two fuses are on the PC1622V PA board.)
⑨O.HEAT
(LED)
: When the PA module temperature reaches 80 deg.C, the LED lights to
indicate the protection circuit has worked. (It is necessary for the
cooling fan to operate for several minutes to cool the PA module.)
(T urn the main POWER switch to off, and then on again to reset the Protection Circuits.)
⑩BAND : Select the desired operating frequency band.
⑪METER : To change the multi-meter scales. Meter reads Pf, Pr, Vd, and Id.
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⑫ID
(LED)
: LED lights when the input drain current is over 20A. This does not
mean that any damage occurred to the amplifier, but is useful for the
user to notice any stress influencing the final FET caused by high drain
current, load impedance trouble, etc. We recommend that you note the
usual condition of the lighting. When any unusual symptoms are
noticed, the user may lower the drive power from the transceiver, check
the antenna SWR, etc.
⑬FAN
⑭
(LED)
MULTIMETER
: LED lights when fan is running at high speed. When the heatsink
reaches 50℃ the cooling fan will switch to high-speed mode to cool the
heatsink.
: Pf (Forward output power), Pr (Reflected power from antenna), Vd
(FET drain voltage), and Id (FET drain current) are shown on the scale
as selected by ⑪METER select switch.
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6-B. Rear Panel Description
FUSE
ANT
AC
IN PUT
STBY
ALC ADJ
ALC
GND
⑭AC POWER : AC Mains Socket. Socket for the AC power cord. (Socket is EMI
filtered.)
⑮STBY : RCA Jack. Connect the control cable from the ACC terminal (or SEND,
TX GND etc.) of the transceiver. The center pin is to be shorted to
ground though the relay circuit of the transceiver. The DC current
necessary is 5V, 1mA only.
⑯ALC : RCA Jack for ALC Voltage Output. Negative DC voltage appears at the
center pin, which is fed back to the ALC terminal of the transceiver.
ALC is used to keep the amplifier output power at certain limits. Also it
is useful when the transceiver output power is higher than 100W.
(See page 12, 8.ALC Connection). Also consult your HF transceiver’s
user manual.
⑰GND : Ground Terminal
⑱ALC ADJ : Potentiometer to adjust ALC voltage level. Minus 10V is available at
maximum, when turned full counter-clockwise.
Factory setting is 0 volts, with the pot turned full clockwise.
⑲FUSE : A pair of fuses for AC mains. 15A glass pre-installed fuse. (Change to
8A fuses if 230V line is used.)
⑳IN PUT (TX) : RF Input Connector. Connect the coax jumper cable from the
transceiver.
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○
ANT (OUTPUT) : RF Output Connector. Connect the coax cable to the antenna.
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InnerLayoutofHL‑1.1KFX UpperView
①RF Power Detector and Send-Receive Switching Relay
②Inter-lock Switch
③Sub- Power Source Unit
④LPF Board
⑤Main Power Source Unit
⑥Sub- Fan (for Main Power Source Unit)
⑦Control Board
⑧Power Amp Unit
⑨Frequency Detector Board
⑩Cooling Fan
⑪AC Fuse
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