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Argonaut Model 509
Description
- Five bands, 3.5 - 30 MHz
- SSB & CW modes
- Fully solid state
- Permeability tuning
- Instant break-in
- Instant band change
- Built-in SWR bridge
- S-Meter
- WWV
- Internal speaker
- Direct frequency readout
- Receiver offset tuning
- Five watts input
- Automatic sideband selection
- Plug-in circuit boards
- 1/2 uV receiver sensitivity
- 12 - 14 VDC or AC pack power
- Size: HWD 4.5" x 13" x 7"
- Weight: 6 lbs
Related Links
Video of 509 with Digital Readout
Mods & Tips
- Cleaner Keying for the Ten-Tec 509 by W1HUE
- Improving SSB Performance of the Ten-Tec Argonaut 509 by W1HUE
- Curing VHF Interference in Ten-Tec Argonauts by W1HUE
Accessories
Lineage & Background of the Five Argonauts
Specifications
Receiver
- Sensitivity: Less than 0.5 uV for 10 db signal-plus-noise-to noise ratio.
- Selectivity: 2.4 kHz at 6 db down. 1.7:1 shape factor 6/50 db.
- Input: Low impedance unbalanced coaxial input.
- Output Impedance: 8 ohm speaker or headphones. (High or low impedance headphones can be used.)
- Spurious Response: More than 50 db down.
- Automatic Gain Control: (Max) For 100 db change in input signal level, output changes less than 6 db.
- Offset Tuning: With pull-out defeat switch.
Transmitter
- DC Power Input: 5 watts PEP; 5 watts CW.
- RF Power Output: 2 watts (50 ohm non-reactive load), miniumu.
- Output Impedance: 50 to 75 ohms.
- Transmit-Receive Operation: SSB: PTT. CW: Complete break-in.
- CW Sidetone: Internally switched. Operates in CW mode.
- Microphone Input: High impedance. Crystal, ceramic, or dynamic.
- Carrier Suppression: 40 db from single tone output.
- Sideband Suppression: 30 db down from a single tone output at 1000 Hz reference.
General
- Frequency Coverage: 3.5 to 4.0, 7.0 to 7.5, 14.0 to 14.5, 21.0 to 21.5, 28.0 to 30.0 MHz.
- Frequency Stability: Less than 100 Hz change from 10.5 to 14 VDC.
- Modes of Operation: Normal sideband, reverse sideband, CW.
- Dial Calibration: +/- 5 kHz on 80 through 15 meters, +/- 10 kHz on 10 meters.
- Tuning Rate: Approximately 25 kHz per knob revolution, 80 meters through 15 meters. 100 kHz on 10 meters.
- Front Panel Controls: Resonate. Offset (pull-off). Band Selector. Tuning Knob. RF Gain. AF Gain/Power On-Off. Mode Switch. Meter Switch. Drive.
- Rear Apron Connectors: Antenna. Dial light switch. Microphone jack. Headphone/speaker jack. Receiver antenna. Auxilliary 12 V output jack. Key jack. Power in jack. Receive/Transmit antenna switch. Accessories socket.
- Semiconductor Devices: 32 Transistors, 3 Mosfets, 3 I.C.'s, and 18 Diodes.