[GreenKeys] period HF receivers

[Raymond Cote]

A little humor is good. Thanks

Sent using Jedi Mind Trick!!
By
Raymond Côté
KD9CCZ

On May 11, 2017, at 22:01, Bruce Gentry <ka2ivy at verizon.net<mailto:ka2ivy at verizon.net>> wrote:



On 5/11/17 9:45 PM, Jim Haynes wrote:
On Thu, 11 May 2017, Bruce Gentry wrote:

the receiver. The fact a homemaker could use the same receiver, especially
if the good loudspeaker and a turntable was with it, to listen to daytime
entertainment broadcasts, records, and the audio of low band VHF television

The Hallicrafters SX-28 (late 1930s) and SX-28A (1940s) had a jack in the
back of the receiver for a phono input, and the audio output stage was push-pull 6V6s to drive some serious loudspeaker.


Some Nationals and Hammarlunds both pre and post war also had phono inputs and push pull 6V6s.  To my knowledge, only the Hallicrafters SX-42 and 62 also included coverage from 30 MC to at least the top of the FM broadcast band and FM detection above 30 MC. They could receive all FM stations including the  old band which wasn't completely vacated until about 1950.  They were probably the best known and most popular "all purpose" receivers for their time. Hallicrafters offered  high fidelity loudspeakers to go with the receivers.  Hammarlund offered a pre-war console radio based on the Super Pro, but the BFO was not adjustable, operated only when a push button was pressed, and intended  as a tuning aid. I don't know of any high fidelity loudspeakers produced by National.  One thing I never quite understood was teenagers in the late 50s not persuading their fathers to let them use the  now idle 1940s Hallicrafters or National from the ham shack in their bedrooms now that Dad had a new  (Collins?) SSB receiver. An SX-42 with the matching loudspeaker and a turntable would have been far better than the All American Five table radios and phonos most teens had.  The kids were rarely refused if the SX was sitting on the shelf gathering dust, they just didn't ask. Add to this all the big pre-war console radios that were trashed in the early 50s to make room for TVs, long before the kids could use them in their rooms for rock-n-roll.  A lot of good rigs sat silent or were trashed before they could have a second life.

     Bruce Gentry KA2IVY

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