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Argonaut II Model 535
Description
Microprocessor controlled HF transceiver. Synthesized PLL design provides general coverage from 100 kHz to 29.999 MHz. Features backlit LCD display, dual digital VFO's, tunable I-F filter system, 48 nonvolatile RAM memories, memory tune, 24 hours clock, and "no-tune" final power amplifier. Argonaut II Model 535 is the QRP version of the Delta II Model 536.
Specifications
General
- Frequency Range: Receive: 100kHz to 29.999 MHz, Transmit: 1.8 to 29.999 MHz
- Frequency Control: Microprocessor controlled digital PLL synthesizer. 10 Hz resolution.
- Frequency Readout: 7 digit 10 Hz backlit LCD readout. Also displays time, RXO, memories, modes, and S-meter.
- Frequency Stability: Worst case, 1 PPM per degree C at 29.999 MHz.
- Frequency Accuracy: +/- 100 Hz @ 25oC.
- Memories: 48 total memory channels, 32 simplex, 16 duplex.
- Antenna Impedance: 50 ohms unbalanced.
- Power Required: Receive - approximately 0.75 A, Transmit - approximately 3 A @ 13.8 VDC
- Construction: Rigid aluminum chassis. Molded ABS Cycolac front panel. Textured top and bottom, snap up stainless steel bail, carrying handle. Printed circuit boards G-10 epoxy glass.
- Dimensions: HWD 3.75" x 9.75" x 12.5" (9.53 x 24.77 x 31.75 cm)
- Net Weight: 8 lbs, 10 oz (3.91 kg)
Transmitter
- Modes: USB, LSB, CW, RTTY (AFSK), and FM.
- RF Power Output: Zero to 5 watts adjustable with front panel PWR control.
- Microphone Input: Four pin front panel connector accepts microphones wth 50K ohms or less and with 5 mV (-62dB) output. Polarizing voltage is available for electret types.
- T/R Switching: VOX or PTT.
- CW Sidetone: Internally generated, volume is adjustable from keypad and is independent of AF gain control.
- SSB Generation: Double sideband modulator. 8 pole crystal ladder filter.
- Carrier Suppression: 50 dB or more typical.
- Unwanted Sideband Suppression: 45 dB typical at 1.5 kHz tone.
- Spurious Output: More than 45 dB below peak power output.
- Meter: Switchable forward power (FWD), SWR, S-meter.
- CW Offset: 700 Hz factory preset.
Receiver
- Modes: USB, LSB, AFSK, AM, FM.
- Sensitivity:
| Mode | Frequency, MHz | ||
|---|---|---|---|
| 0.1 - 1.6 | 1.6 - 29.999.99 | ||
| SSB, CW, AFSK | 0.50 uV | 0.25 uV | 10 dB S/N @ 2.5 kHz |
| AM | 3.5 uV | 1.00 uV | 10 dB S/N @ 6.0 kHz |
| FM | 1.00 uV | 0.30 uV | 12 dB SINAD @ 15 kHz |
- Selectivity:
| Mode | Selectivity | Shape Factor | |
|---|---|---|---|
| -6 dB | -60 dB | ||
| SSB (BW @ Max) | 2.5 kHz | 4.9 kHz | 2.0:1 |
| AM | 5.1 kHz | 15.8 kHz | 3.1:1 |
| FM | 15.0 kHz | 30 kHz @ -30 dB | 2.0:1 |
- Crystal Filter: 8 pole ladder type, "Jones" Filter (Patent #5051711). Bandwidth continuously adjustable from 2.5 kHz to 500 Hz.
- Attenuator: Approx. -20 dB for 0.1 to 29.999 Mhz.
- I-F Frequencies:
