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Last modified 2022-01-20

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President Adams VFO

A picture of President Adams VFO


Type:Citizen band transceiver
Frequency range:27.775-29.775 MHz
Channels / tuning steps:VFO, 1 KHz steps
Mode:AM / SSB
Frequency control:PLL
Frequency stability:Max ? ppm
Clarifier or Delta tune:±1.25 KHz
Power supply:11.7-15.9 VDC
Current drain / power consumption:RX: Max 2 A
TX: Max 3 A
Antenna impedance / connector:50 ohm / SO-239
Dimensions (W*H*D):232*65*275 mm (9.13*2.56*10.8")
Weight:3.55 Kg (7.83 lb)
Other features:PA. ANL/NB. RF & Mic gain. SWR-meter. Tone. Dimmer.

Receiver system: Single conversion superheterodyne
IF: 7.8 MHz
Sensitivity: AM: 0.75 uV (10 dB (S+N)/N)
SSB: 0.25 uV (10 dB (S+N)/N)
Selectivity:4.2 KHz (-6 dB), 7 KHz (-60 dB)
Image rejection:70 dB
AF output power / speaker:3 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm, 8 ohm

RF output power: AM: 4 W
SSB: 12 W (PEP)
Modulation system: AM: High and low level, class B
SSB: Balanced
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / 4-pin (Metal locking ring connector)
Microphone input level:? mV

Manufactured:Taiwan, 1978-1979 (Discontinued)
Main PCB:
Sub PCBs:
Additional info:Professionally modified by Müller Electronic, Germany 1979
Related documents:
Sams Photofact #:None
Modifications and fixes:
Options / Accessories:
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