The is a high performance general purpose military receiver for voice, CW and FSK-signals in the 15 to 1500 kilocycle (kHz) frequency range. It was designed for high stability under varying conditions of temperature, humidity, shock and vibration and may be employed in either fixed or mobile installations.
- Desktop Amateur ULF/VLF Receiver
- Frequency range RX
- 15-500 / 500-1500 kHz (2 ranges, 7 bands)
- Frequency stability
- Tuning steps
- 0.1 / 1 / 2 / 4 / 8 kHz
- AM / CW / FSK
- 6 µV
- Receiver system
- Double conversion cuperheterodyne, including circuit arragement for cancelling drift of crystal oscillator (34 tubes)
- Image rejection
- Audio output
- 500 mW unbalanced, 10 mW balanced
- Power requirements
- Mains (115/230 V AC)
- Current drain RX
- 250 W with oven on, 150 W when oven off
- Dimensions (w×h×d)
- 483 × 267 × 438 mm (19.02 × 10.51 × 17.24 in)
- 37.2 kg (82.1 lbs) including power supply PP-621/URR
- Form factor
- Between 1951 and 19xx in USA
- Amateur / Ham radio operators
- Operating altitude up to 10,000 feet
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