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Last modified 2025-09-12

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Rockwell Collins HF-281

A picture of Rockwell Collins HF-281

SPECIFICATIONS

GENERAL
Type:Professional land mobile HF transceiver
Frequency range: 1.6-20 MHz
Tuning steps:100 Hz, 1 / 10 / 100 KHz, 1 / 10 MHz
Frequency stability:? ppm
Mode:TX: SSB/CW
RX: AM / SSB / CW / RTTY
Channels / memory management: 6 fixed frequencies via diode matrix
Duplex shift / offset:
Power supply:Mains: 110 or 230 VAC
oe 12 VDC
Current drain / power consumption:RX: ? mA
TX: 10 A @ 110 VAC, 4 A @ 230 VAC
Antenna impedance / connector:50 ohm / ?
Dimensions (W*H*D):394*190*457 mm (15.5*7.48*18")
Weight:24.2 Kg (53.35 lb)
Other features:




RECEIVER SECTION
Receiver system: ? conversion superheterodyne
Sensitivity:
Squelch sensitivity:
Selectivity:
Image rejection:
AF output power / speaker:? W at ?% distortion / ? ohm
External speaker connector:




TRANSMITTER SECTION
RF output power: 125 W
Modulation system:
Max FM deviation (Factory set):No FM
Spurious emissions:Better than -? dB
Microphone impedance / connector:? ohm / ?-pin
Microphone input level:? mV




MISCELLANEOUS
Manufactured:USA, 1978-1982 (Discontinued)
Additional info:
Related documents:
Modifications and fixes:
Reviews:
Options / Accessories:
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