Note
QST, Nov 1962, p. 109. (announced)
QST, Oct 1963, p. 116. (available almost a year later)
QST, Jan 1964, p. 135.
QST, Mar 1965 p. 121.
Allied Radio catalog 1966 (copyright 1965), p. 361.
The Venus 6 meter SSB transceiver used a crystal lattice filter and had 85 watts output on sideband and CW. The AM mode was available at reduced power. Its receiver was a double-conversion superhet. The AC power supply was a separate unit that could be mounted remotely.
Features
– A nuvistorized front end
– Crystal lattice filter in both receive and transmit positions.
– Balanced beam tube modulator.
– Receiver Offset control provides ± 1.5 KHz tuning
– An effective peak noise limiter
– Refined tuning accurately reads 1 kHz per division. The main tuning dial tunes 10 kHz per revolution.
– Slow AVC release
– Broadband circuits throughout. The only transmitter tuning requirement is repeaking of the final amplifier plate when large frequency excursions are made.
– Shaped, blocked-grid keying combined with linear circuitry and extreme frequency stability insure unexcelled CW performance.
– Accessory connector is provided for connection and control of external linear amplifier and/or separate receiver.
Specifications
– Frequency Range: 49,975 to 50,475 KHz, Standard (other ranges available on special order).
– Power Ratings: 85 watts PEP input.
– SSB Performance (9 MHz lattice filter): Unwanted sideband down more than 50 db at 1000 cycles. Carrier suppression greater than 56 db. Distortion products down more than 30 db at full ratings.
– Frequency Stability: Less than 500 cycle warmup drift after first twenty minutes. Less than 100 cycle/hour drift after warmup.
– Sensitivity: .25 uv for 6 db S/N on AM; .1 uv for 6 db S/N on SSB
– Selectivity: 2.7 KHz at 6 db, less than 6 KHz at 50 db.
– Spurious Responses: Images and IF leak through down more than 60 db
– Overload Characteristics: Less than 5% cross modulation results from any two signals separated by more than 20 KHz if stronger signal is less than 2 MV across 50 ohm input.
– AVC Characteristics: Less than 10 db change in AF output for input change from 1 uv to 400 uV (52 db). Fast attack, panel selectable release times of 0.15 or 1.2 seconds.
– AF Power Output to Speaker: More than 2 watts at 3.2 ohms.
2. Tube Lineup (See Figure 2)
Tube No. (21 total)
--- --- --- ---
– 6CW4 RF Amp
– 6EH7 1st Mixer
– 6EH7 2nd Mixer
– 12BA6 9 MHz Amp
– 12BE6 3rd Mixer
– 12BA6 455 KHz IF
– 12AL5 AM det / AM ANL
– 12BE6 Prod. Det.
– 12DW7 1st Audio / S-Meter Amp. Relative Output Meter Amp.
– 12AQ5 Audio Output
– 12DW7 Speech Amp.
– 7360 Bal. Mod.
– 12AU6 1st Mixer
– 12AU6 14 MHz Amplifier
– 12BA7 2nd Mixer
– 12BY7 50 MHz Driver/Amp.
– 6883 Final Power Amp.
– 6DJ8 5.0 to 5.5 MHz Master Osc. and Cathode follower
– 12AU7 8998.5 KHz carrier osc / 3rd Mixer osc
– 0A2 Volatge regulator
– 6U8A 36 MHz osc. 36 MHz osc
Power requirements are met by the Squires-Sanders Venus AC #800-013, 115 Volts AC, 60 cps input Power Supply/speaker combination (as well as by other commercially available Power Supply/speaker packages (See Section II, Installation).
References
Review: QST, Sep 1964, p. 84.
Review, 73, Dec 1964, p. 64.
