Argosy II Model 525D

The Argosy 525D is a medium power solid state transceiver covering 80, 40, 30, 20, 15, and 10 meters.

• eHam

• Reduce Popping on CW
• Argosy 525 / 525D Identification

• 2.4 kHz 8-pole ssb filter Model 220
• 1.8 kHz 8-pole ssb filter Model 218
• 500 Hz cw filer Model 217
• 250 Hz cw filter Model 219
• Audio cw filter Model 224
• Noise blanker Model 223
• DC circuit breaker Model 1125
• Power Supply Model 225
• Mobile Mount Model 222
• Linear switching kit Model 1126

• Frequency Coverage: 3.5 - 4.0, 7.0 - 7.5, 10.0 - 10.5, 14.0 - 14.5, 21.0 - 21.5, 28.0 - 28.5, 28.5 - 29.0, 29.0 - 29.5, 29.5 - 30.0 MHz. (VFO provides approximately 40 kHz overrun on each band edge.)
• Operating Modes: Normal sideband, reverse sideband, cw.
• VFO Stability: less than 20 Hz change per ^oF averaged over a 40^o change from 70^o to 110^o after a 30 minute warmup. Less than 15 Hz change from 105 to 125 VAC line voltage when using a Ten-Tec power supply.
• Readout: 4 Digit, 0.3" LED numerals.
• Accuracy: +/- 100 Hz.
• Antenna Impedance: Low impedance unbalanced (coaxial), 50 - 75 ohms.
• Power Requirements:12 - 14 Vdc regulated to 5% or better. 500 mA receive; 9 A maximum transmit. Power switch remotely controls power supply.
• Semiconductors: 48 Transistors, 4 FETs, 18 IC's, 52 Diodes, 4 PIN Diodes, 2 LEDs.
• Construction: Rigid steel chassis. Dark painted, molded front panel. Dark painted aluminum back, top and bottom. Stainless steel tilt-up bail.
• Dimensions: HWD 4" x 9.5" x 12" (bail not extended).
• Net Weight: 8 lbs.

• Sensitivity: 0.3 uV for 10 dB S+N/N, typical.
• Selectivity: 4 pole crystal filter. 2.5 kHz bandwidth, 2.7:1 shape factor @ 6/50 dB.
• Audio Output: 1 watt at 8 ohms with less than 2% distortion. Built-in speaker.
• I-F Frequency: 9 MHz.
• Notch Filter: Greater than 50 dB rejection notch, tunable from 200 Hz to 3.5 kHz.
• S-Meter: Automatically switched on when receiving.
• Spurious Responses: More than 50 dB down except 28.980 MHz (which can be eliminated by using low end of 29.0 - 29.5 MHz band segment).
• I-F Rejection: 60 dB.
• Offset Tuning: Receiver, +/- 3.0 kHz, typical, detent center off.
• Crystal CW Filters: Optional plug-in accessories. Model 217 has 500 Hz bandwidth, Model 219 has 250 Hz bandwidth.
• Crystal SSB Filter: Optional plug-in accessory. Model 218 has 1.8 kHz bandwidth.
• 8 Pole Crystal I-F Filter: Optional plug-in accessory Model 220. 2.4 kHz bandwidth. Used in place of standard plug-in 4 pole ssb filter.
• Noise Blanker: Optional plug-in accessory, Model 223. I-F type, 50 dB blanking range.
• Audio CW Filter: Optional plug-in accessory, Model 224. Center frequency 750 Hz. Position ONE has 450 Hz bandwidth down 10 dB at 400 Hz and 1500 Hz. Position TWO has 150 Hz bandwidth, down 40 dB at 400 Hz and 1500 Hz.

• DC Power Input: 100 watts maximum. 100% duty cycle for up to 20 minutes, all bands.
• RF Power Output: 40 - 50 watts in HI power position, 4 - 5 watts in LO power position.
• T/R Switching: PIN diode antenna switch, push-to-talk on ssb, full break-in (QSK) on cw.
• CW Sidetone: Internally generated. Adjustable tone and volume independent of af control. Operates only in cw mode.
• SSB Generation: 9 MHz 4 pole crystal ladder filter. Balanced modulator. Converts to 8 pole with optional Model 220 filter.
• Microphone Input: High impdeance crystal, ceramic or dynamic.
• Carrier Suppression: 40 dB minimum.
• Sideband Suppression: 30 dB minimum at 1 kHz tone.
• Spurious Output: Less than -45 dB.
• Meter: Indicates forward or reverse peak power on transmit, front panel switch.
• ALC Control: High power only. LED indicator.