HT-750

HT=750 triband SSB/CW HT The triband HT-750 was an engineering marvel when it was first released in late 1992. While monoband HF and VHF SSB/CW handhelds had been around for a long time, a triband, digital, full featured HT was unheard of. Though it never caught on in the American market, the HT-750 was probably one of the most popular pieces of THP equipment over the 12 years it was in production. It is absolutely unique: a 6, 15, and 40 meter SSB/CW handheld transceiver. The HT-750 is still a favorite of QRP/portable operators, since it weighs less and lasts much longer on batteries than Yaesu's feature-rich FT-817 portable and is far, far smaller and lighter than an Icom IC-703Plus. The HT-750 features a remarkable receiver which would be good by any standard, but is truly amazing in a handheld. Tokyo Hy-Power was forced to discontinue the HT-750 in 2004 as some parts were simply no longer available.

HA series antennas Accessories included loading coils for each of the three bands (models HA-40LB, HA-15LB, and HA-06LB) which, when combined with the HA-1LT telescopic whip, make it possible to literally work DX while walking with a handheld (see photo at right). These HT-top antennas are grossly inefficient, but the addition of a counterpoise yields surprisingly good results. This antenna system was replaced with larger, center loaded antennas for 15 and 40 meters for the final production runs of the HT-750. The newer style of antenna (not pictured) definitely performed better due to the larger size but did not break down into small pieces like the original antennas THP offered.

THP also offered a speaker/mic., a genuine leather case, and a choice of amplifiers: the 10 watt HL-710 or the 50 watt HL-750, which match the rig. No charger or rechargable battery pack was offered, but the rig will charge standard AA NiMH or NiCad batteries internally with an ordinary 12 volt wall cube.

Specifications:

Frequency range:
7.000-7.299 MHz
21.000-21.499 MHz
50.000-50.499 MHz

Mode: SSB (A3j), CW (A1)

Antenna Impedance, Antenna Connector: 50 ohms, BNC

Supply Voltage: DC 13.8V (can operate from 8V-15V)

Power Consumption:
Transmission = Max. 1.5A
Reception = Max. 100mA

Max. Transmitter Ouput Power:
7,21 MHz: 3W
50MHz: 2W

Spurious Level: -40dB or less

Carrier Suppression: -40dB or greater

Microphone Input Impedance: 600 ohms
IF: 9MHz

Receiving Selectivity: for 0.3uV input, S+N/N=10dB min.

Selectivity:
+/-2.2KHz or over = -6dB
+/-6.0KHz or less = -60dB

RIT (Receiver Incremental Tuning): +/-0.5KHz

Audio Frequency Output: 800mW (for 8 ohm load at 10% distortion)

Dimensions: 66(W) x188(H) x47(D) mm (2.6"W x 7.4"H x 1.85"D)
Weight: 850g (1 lb. 14 oz.)

-Last updated 9/5/2005