Note
QST, Feb 1968, p. 1.
QST, Feb 1968, p. 1.
QST, Nov 1969, inside front cover.
QST, Jan 1970, inside front cover.
QST, Feb 1971, p. 1.
The HA-20 is an accessory unit designed to accompany the SR-400 transceiver (and can also be used with the SR-2000). It serves as both a separate VFO and SWR bridge.
Features & Capabilities
– Fully compatible for use with both the Hallicrafters SR-400 and SR-2000 units.
– VFO Dial & Frequency Control: Features a dial that is identical to the main tuning dial on the SR-400 transceiver.
– Allows the user to transmit and receive on frequencies separated by as much as 500 kHz.
– Dual-Frequency Reception: Enables an operator to receive on two different frequencies simultaneously.
– Monimatch-Type S.W.R. Bridge: Includes a built-in Monimatch-type SWR bridge. Can be used either as an output indicator or to monitor feed-line match. The SWR bridge mechanism itself is a separate unit that can be remotely mounted in the feed line.
Power Requirements: Includes its own built-in power supply.
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## Physical Specifications
| Feature | Specification |
| --- | --- |
|
| Manufacturer | The Hallicrafters Co., Rolling Meadows, Illinois
|
Review: QST. Oct 1968, p. 49.
