Tokyo Hy-Power makes quite a variety of all mode linear amplifiers designed to work with either their own low power rigs or any other manufacturers' equipment. Thanks to the recent popularity of the Yaesu FT-817 and Icom IC-703, there has been increased interest in these amps, and this page is designed to be an English language resource on the various models available.
DISCLAIMER: It is illiegal to sell these amplifiers in or import them to the United States under FCC rules. Once they are in the country, though, it is perfectly permissible to use them in a ham shack. The owner of this web site neither encourages nor condones the breaking of any U.S. laws or FCC rules and regulations. If you import an illegal amplifier, you do so at your own risk. The information on these pages is provided for licensed English-speaking radio amateurs outside the United States, and as part of a general reference on radio equipment manufactured by Tokyo Hy-Power Labs, Inc. The owner of this website accepts no liability for improper use of the information contained herein.
This amplifier and the HL-750 (see discontinued models below) were specifically designed to match the Tokyo Hy-Power HT-750 6, 15, and 40 meter SSB/CW handheld transceivers. The HL-710 provides 10 watts output with two to three watts of drive on the three bands the HT-750 covers.
Specifications for the HL-710:
Freq. Band: 7, 21, and 50 MHz bands (Also can work on 20 meters)
Mode: SSB,CW,FM RF Drive Power: 3W HF, 2W 50 MHz maximum
RF Out : 10W PEP max.
Power Transistor: 2SC1969 x 2
Circuitry: Class AB, push-pull
External remote controller (HRC-60, optional) terminal.
DC Power : 13.8V, 3A max.
Protections : Against high SWR antenna, reverse DC power polarity.
Cooling : Natural air flow.
Dimensions & Weight : 105mmx35mmx192mm (WxHxD), approx. 800 grams
Price varies with exchange rates, email for current quote.
Information for use with the Yaesu FT-817, Ten-Tec 516, and other non-THP rigs:
The following is excerpted from an e-mail sent by Nobuki Wakabayashi, JA1DJW, at Tokyo Hy-Power:
HL-710/750 may work on 40m, 20m (on 15m position), 15m, 6m with no problem. On 80m, it works with much 2nd harmonics.(Uses 40m pos.) 12m is critical. 10m , may or may not work on 6m position.
Ours are designed to accept 3W drive from our handy, while Yaesu FT-817 is said to out 5W! There is a slight possibility that our amps will be over-driven by Yaesu for somehow distorted ssb signal if you really shout to 817 with your maximum voice energy...
The HL-100B is probably the most popular amplifier for QRP transceivers today. Maximum
drive power can be set to either 5W or 10W with a front panel switch for a rated output
of 100 watts. It operates on all bands, including the WARC bands, from 6
through 80 meters. While it can, technically, amplify 160 meter signals, the amp has
no filtering at that frequency and would produce unwanted harmonics. Therefore, it is
inadvisable to use this amp on 160.
Specifications:
Freq. Band: 3.5-29.7 MHz and 50MHz (Works outside amateur bands also.)
Mode: SSB,CW,AM,FM RF Drive Power: 5W (1-5W)/10W (1-10W) selectable
DC Input Power: 13.8V 17A Maximum
RF Out : 100W PEP max. (25W for AM)
Power Transistor: MOSFET RD70HVF1 ×2
Connectors: Type M (SO-239)
Other: Output low-pass filter for each band. Carrier operated send-receive switch
circuit. LED power output level indicator. ALC output. Protections against antenna
short, band set error, and reversed DC power polarity.
Cooling : Natural air flow.
Dimensions: 174(W)×56(H)×235(D)mm, 6.9(W)x2.2(H)x9.3(D) inches
Weight: approx. 2.4kgs., 5.3lbs.
Option: Air cooled fan equipped bracket: HBK - 110F
Price varies with exchange rates, email for current quote.
Specifications:
Freq. Band: 3.5-29.7 MHz (Works outside amateur bands also.)
Mode: SSB,CW, AM,FM RF Drive Power: 10W (10, 50, or 100W)
RF Out : 200W PEP max., 180W with 5W drive. (AM: 50W)
Power Transistor: THP-120x4 (proprietary)
Connectors: Type M (SO-239)
Other: Switch type low-pass filter, sending and receiving carrier * control and LED power level indication, various protection networks (LPF band mistake set, antenna short circuit and radiator overheating), stand-by terminal, ALC output and RF input 3 position switch
DC Power : 13.8V, 40A max.
Cooling : Natural air flow, fan and bracket optional (HBK-110F)
Dimensions & Weight :
Amplifier: 180mm (W) x 70mm (H) x 290mm (D), Approximately 3kg
Controller: 150mm (W) x 35mm (H) x 85mm (D), 0. 4kg
Accessories included: Instruction manual, warantee, controller & cable (2m), extra fuse 20A x 4, M - M coaxial cable and RCA plug x 2, DC power source cable (1m)
Options:
Air cooled fan equipped bracket: HBK - 110F
Cable extension for controller (6m): HRC - 200L
Mounting bracket for controller: HBK - 02
For those of you who want the ability to turn your little QRP rig into a QRO powerhouse, the HL-700B is the desktop amplifier for you. 10 watts input will give 400 watts out. A 100 watt rig will drive this amp to 600 watts output. The amp is fully solid state, and matching AC and DC power supplies are available from THP.
Specifications:
Freq. Band: 3.5 / 7 / 14 / 21 / 28mHz (also operable on 10 / 18 / 24. 5mHz bands)
Mode: SSB,CW, AM,FM RF Drive Power: 10W and 100W, manually switched
DC Input Power : 13.8V, typically 70A for 500W output
RF Out (100W drive): SSB: 600W PEP, CW/FM: 500W, AM: 300-350W
RF Out :(10W drive): SSB: 400W PEP, CW/FM: 400W, AM: 250W
Power Transistor: THP - 120 x 8 (proprietary)
Connectors: Type M (SO-239)
Meters: Transmitted power and reflected power, power source voltage
Other: Switch type low-pass filter, sending and receiving carrier control, various protection networks, (LPF band mistake set, antenna short circuit, radiator overheating and PA imbalance, overvoltage), stand-by terminal, ALC output and RF input 2 position switch
Dimensions & Weight : 300mm (W) x 100mm (H) x 342mm (D), Approximately 8kg
Accessories included: Instruction manual, warantee, extra fuse 20A x 4 2A x 1, coaxial cable, 8 pin DIN plugs and DC power source cable (8SQ 2m)
Options:
DC - DC converter: HDC - 70
Regulated power supply: HP - 700
For several years the HL-50B was probably the most popular amp for QRP rigs. It can accept 1-10 watts of drive for a rated output of 50 watts, though members of the Tokyo Hy-Power and FT-817 reflector members have reported as much as 65 watts output on the lower HF bands. It operates on all bands, including the WARC bands, from 6 through 80 meters. While it can, technically, amplify 160 meter signals, the amp has no filtering at that frequency and would produce unwanted harmonics. Therefore, it is inadvisable to use this amp on 160.
Specifications:
Freq. Band: 3.5-29.7 MHz and 50MHz (Works outside amateur bands also.)
Mode: SSB,CW, AM,FM RF Drive Power: 10W (1-10W)
RF Input(DC): 120W peak max.
RF Out : 50W PEP max. ( 25W for AM, FM ), 35W with 5W drive.
Power Transistor: 2SC1946A x 2
Circuitry: Class AB, push-pull
Other: Switch selected low-pass filter for each band. Carrier operated send-receive switch circuit. LED power output level indicator. External remote controller (HRC-60, optional) terminal.
DC Power : 13.8V, 10A max.
Protections : Against high SWR antenna, reverse DC power polarity.
Cooling : Natural air flow.
Dimensions & Weight : 148x55x190 (WxHxD)mm., approx. 1.4 kgs.
Price varies with exchange rates, email for current quote.
Modification for maximum output with the Yaesu FT-817, Ten-Tec Argo 556, and other 5 watt rigs:
John Newell, KB1FPM, reported the following on the Tokyo Hy-Power reflector:
I emailed THP and with their usual blindingly fast and friendly service, THP sent me the following information:
I finally got around to doing the HL-50B mod last weekend. As Norm Wesler K2YEW had advised, I am showing about 65w out on 5w in, measured on a factory calibrated LDG DWM-4. This compares to 35-42w out before.
BTW, has anyone else performed this mod? Several of the holes were *REALLY* hard to unsolder (and to resolder).
Thanks to John for this information and also for providing the specifications.
The HL-750 and the HL-710 (above) were specifically designed to match the Tokyo Hy-Power HT-750 6, 15, and 40 meter SSB/CW handheld transceivers. The HL-750 provides 50 watts output with just three watts of drive on the three bands the HT-750 covers.
Specifications for the HL-750:
Freq. Band: 7, 21, and 50 MHz bands (Also can work on 20 meters)
Mode: SSB,CW,FM RF Drive Power: 3W HF, 2W 50 MHz maximum
RF Out : 50W PEP max.
Power Transistor: 2SC1946A x 2
Circuitry: Class AB, push-pull
External remote controller (HRC-60, optional) terminal.
DC Power : 13.8V, 8A max.
Protections : Against high SWR antenna, reverse DC power polarity.
Cooling : Natural air flow.
Dimensions & Weight : 150x47x184 (WxHxD)mm., approx. 1.3 kgs.
Price varies with exchange rates, email for current quote.
The following is excerpted from an e-mail sent by Nobuki Wakabayashi, JA1DJW, at Tokyo Hy-Power:
HL-710/750 may work on 40m, 20m (on 15m position), 15m, 6m with no problem. On 80m, it works with much 2nd harmonics.(Uses 40m pos.) 12m is critical. 10m , may or may not work on 6m position.
Ours are designed to accept 3W drive from our handy, while Yaesu FT-817 is said to out 5W ! There is a slight possibility that our amps will be over-driven by Yaesu for somehow distorted ssb signal if you really shout to 817 with your maximum voice energy...
The HL-670Q is a quad band amplifier covering the 6, 10, 15, and 40 meter bands only. It was designed to match the Kenwood TS-670 All Mode Quad Bander transceiver sold in the mid to late 1980s. Maximum input drive power was 10W with a rated output power of 125W. This model was only sold in Japan and is considered very rare.
Additional discontinued models will be added shortly.
-Last updated 4 April 2006