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Last modified 2023-09-19

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Semco Selecto

A picture of Semco Selecto

SPECIFICATIONS

GENERAL
Type:Amateur VHF transceiver
Frequency range: TX: 144-146 MHz
RX: 144-146 MHz
Tuning steps:Analog / continuous
Frequency stability:300 Hz per hour after 1 hour warmup
Mode:AM / FM / SSB / CW
Channels / memory management: None
Repeater shift / offset:-600 KHz
Power supply:Mains: 220 VAC
or 12 VDC
Current drain / power consumption:RX: 2 A (Average)
TX: Less than 9 A
Antenna impedance / connector:50-60 ohm / SO-239
Dimensions (W*H*D):256*105*273 mm (10.1*4.13*10.75")
Weight:5.5 Kg (12.13 lb)
Other features:1750 Hz repeater tone. Roger beep. Panoramic adapter jack.




RECEIVER SECTION
Receiver system: Single conversion superheterodyne (SSB/CW)
IF: 10.7 MHz
Double conversion superheterodyne (AM/FM)
1st IF: 10.7 MHz
2nd IF: 455 KHz
Sensitivity:
Selectivity: AM/FM
15 KHz (-3 dB)
32 KHz (-60 dB)
SSB/CW
2.4 KHz (-3 dB)
4.5 KHz (-60 dB)
Image rejection:70 dB
AF output power / speaker:4.5 W at ?% distortion / @4 ohm (No internal speaker)
External speaker connector:2-pin (DIN), 4-16 ohm




TRANSMITTER SECTION
RF output power:

HighLow
AM (PEP):25 W5 W
FM:25 W5 W
SSB (PEP):25 W5 W
CW:25 W5 W

NB! The low power setting is adjustable from about 0 to 25 W
Modulation system:
Max FM deviation (Factory set):5 KHz
Spurious emissions:Better than -60 dB
Microphone impedance / connector:50 Kohm to 1 Mohm / 5-pin (Bayonet-DIN)
Microphone input level:2-20 mV @ 1 KHz




MISCELLANEOUS
Manufactured:West Germany, 1976-197x (Discontinued)
Additional info:New price, may 1977 in West Germany: DM 2580,-
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
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A rear picture of Semco Selecto