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Last modified 2022-02-02

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Hy-Gain V AFS (2705AFS)

A picture of Hy-Gain V AFS (2705AFS)

SPECIFICATIONS

GENERAL
Type:Citizen band transceiver
Frequency range:26.965-27.255 MHz (Sweden)
Channels / tuning steps: 25 (1-24 + 11A)
According to swedish law at the time, SSB was only allowed on ch 24, and
therefore, switching this radio to LSB or USB automatically changed the
channel to 24.
Mode:AM / FM / SSB
Frequency control:PLL (PLL02A)
Frequency stability:Max ? ppm
Clarifier or Delta tune:? Hz
Power supply:11.5-14.8 VDC (3-pin connector)
Current drain / power consumption:RX: 500-600 mA
TX: 1.8-2.5 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):180*55*240 mm (7.1*2.2*9.4")
Weight:2 Kg (4.4 lb)
Other features:PA. NB/ANL, Selcall option.




RECEIVER SECTION
Receiver system: Single conversion superheterodyne (SSB)
IF: 10.695 MHz
Double conversion superheterodyne (AM/FM)
1st IF: 10.695 MHz
2nd IF: 455 KHz
Sensitivity: AM: 0.5 uV (10 dB S+N/N)
FM: 0.5 uV (20 dB S/N)
SSB: 0.2 uV (10 dB S+N/N)
Selectivity: AM/FM: 24 KHz (-80 dB)
SSB: 12 KHz (-60 dB)
Image rejection:
AF output power / speaker:2 W at ?% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm




TRANSMITTER SECTION
RF output power: AM/FM: 3.5 W
SSB: 12 W (PEP)
Modulation system:
Max FM deviation (Factory set):? KHz
Spurious emissions:Less than -? dB
Microphone impedance / connector:? ohm / 5-pin DIN (180)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 1981-198x (Discontinued)
Main PCB:PTBM121D4X by Cybernet Electronics Corporation
Sub PCBs: PTLD010AOX - LED display board
PTSW094AOX - Channel selector board
Additional info: The metallic lever switch on the far left is not a user modification.
It could actually activate an optional internal selcall transmit board.
The 2705AFS was mainly sold in Sweden, and possibly in some of
the other scandinavian countries.

New price 1981 in Sweden: SEK 2295:-
New price 1982 in Sweden: SEK 1970:-
New price 1983 in Sweden: SEK 1970:-
Related documents: User manual (3.7 MB, in swedish)
Schematic diagram (1.7 MB) 2705AFS specific
PLL: PLL02A
Sams Photofact #:None
Modifications and fixes:
Reviews:Radio & Television: #6/7 1981
Options / Accessories:
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A rear picture of Hy-Gain V AFS (2705AFS)