Hallicrafters SR-400A Cyclone III Desktop Shortwave Transceiver

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The Hallicrafters SR-400A Cyclone III was the last of the SR-400 series transceivers. Improvements over the SR-400 include increased power output and a high efficiency cooling fan for the power amplifier.

Frequency range

RX-range
10-80 m
TX-range
10-80 m
HAM bands
80m  60m  40m  30m (WARC)  20m  17m (WARC)  15m  12m (WARC)  11m (CB)  10m 
Stability
-
Tuning steps
Continuous
Filters
-

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Receiver

Modulations
CW   SSB  
Sensitivity
-
Selectivity
-
Receiver system
Double conversion superheterodyne, 20 tubes
IF-frequencies
-
Image rejection
-
Audio output
-

Transmitter

Modulations
CW   SSB  
RF-Output
SSB: 550 W (PEP input), CW: 175 W (input)

Connections

Antenna
-
Impedance
50 Ω

Electrical

Power requirements
Separate PSU
Current drain RX
-
TX
-

Physical

Dimensions (w×h×d)
381 × 165 × 330 mm (15.00 × 6.50 × 12.99 in)
Weight
9.98 kg (22.0 lbs)
Form factor
Base Station
Manufactured
Between 1969 and 1969 in USA

Other features

Memories
-
Usage
Amateur / Ham radio operators
Features + options
R.I.T.
ALC
Notch and CW filter
6-pole XTAL lattice filter
Noise blanker
VOX
Accessories
-

Manuals, diagrams and brochures

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