Argonaut Model 505

SSB / CW QRP solid-state transceiver covering 10 - 80 meters.

• ARRL Recent Equipment, QST, 1972, November (Must be an ARRL member and logged in to view.)

• VE3AB's Argonaut Pages

• Final Transistors for 505
• Curing VHF Interference in Ten-Tec Argonauts by W1HUE

• Linear Amplifier Model 405
• Power Supply Model 251
• Power Supply Model 210
• Microphone Model 215
• Keyer Model 605 (KR-5)

• Frequency Coverage: All Amateur bands 10-80 meters
• Filtering: 9 MHz crystal filter, 2.5 kHz bandwidth, 1.7 shape factor @ 6/50 dB points.
• Automatic sideband selection, reversible
• Solid state design
• Permeability tuned circuits
• Seven plug-in circuit boards
• Direct frequency readout.
• Vernier tuning. Dial accuracy +/- 5 kHz (slightly more at 10 meters)
• Stability: Drift less than 100 Hz
• Power required: 12-15 VDC @ 150 mA receive, 800 mA transmit at rated output.
• Contruction: Aluminum chassis, top and front panel, molded plastic end panels. Cream front panel, walnut vinyl top and end trim.
• Dimensions: HWD 4.5" x 13" x 7"
• Weight: 6 lbs.

• Sensitivity: Less than 0.5 uV for 10 dB S+N/N
• "S" Meter
• AGC
• Offset Tuning
• Tuned MOSFET RF amplifier and mixer
• Audio distortion less than 2%, internal speaker
• Headphone/external speaker jack

• 5 watts input power
• Broad band final amplifier eliminates tuning
• 50 - 75 ohms output impedance
• Press-To-Talk
• Instant CW break-in
• SWR bridge
• Integral TVI filter
• CW sidetone
• Integrated circuit balanced modulator
• Automatic CW offset or approximately 700 Hz
• Shaped keying