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Last modified 2021-05-30

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Hy-Gain III (2703)

A picture of Hy-Gain III (2703) 23 channel swedish version

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.405 MHz (USA)
26.965-27.255 MHz (Sweden)
Channels/tuning steps:40 (USA)
1-23 + 11A (Sweden)
Mode:AM
Frequency control:PLL (PLL02A)
Frequency stability:? ppm
Power supply:11.5-14.5 VDC (3-pin connector)
Current drain/power consumption:RX: 200 mA (Squelched)
TX: Max 1.1 A
Antenna impedance/connector:50 ohm / SO-239
Dimensions (W*H*D):180*60*220 mm (7.09*2.36*8.66")
Weight:1.76 Kg (3.88 lb), without mounting bracket
Other features:PA. ANL/NB. SWR-meter.




RECEIVER SECTION
Receiver system:Double conversion superheterodyne
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity:0.7 uV (10 dB S+N/N)
Selectivity:
Image rejection:
AF output power/speaker:3 W at ?% distortion / ? ohm
External speaker connector:3.5 mm




TRANSMITTER SECTION
RF output power:USA: 4 W
Sweden: ~3.5 W (5 W input)
Modulation system:
FM deviation:No FM
Spurious emissions:Less than -? dB
Microphone impedance/connector:? ohm / 5-pin DIN (180)
Microphone input sensitivity:? mV




MISCELLANEOUS
Manufactured:Japan, 1977-197x (Discontinued)
Main PCB: USA
PTBM051AOX by Cybernet Electronics Corporation
Sweden
PTBM087AOX by Cybernet Electronics Corporation
Sub PCBs: USA
EPO-0649-01 - Lamp control board (PTZZ005AOX)
PTLD015AOX - LED display board
PTSR006AOX - SWR board
PTSW023AOX - Channel selector board
Sweden
EPO-0649-01 - Lamp control board (PTZZ005AOX)
PTLD015AOX - LED display board
PTSW067AOX - Channel selector board
PTZZ024AOX - Selcall relay board
Additional info:New price 1979 in Sweden: SEK 1595:-
Related documents: Service manual (12.7 MB)
PLL: PLL02A
Sams Photofact #:CB-178 (March 1978)
Modifications and fixes:
Reviews:Radio & Television: #6/7 1979
Options/Accessories:
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A picture of Hy-Gain III (2703) 40 channel US version