[ARC5] Hallicrafters receivers.

[Kenneth G. Gordon]

On 13 May 2013 at 14:04, Geoff wrote:

> The SX-28 was not built to any spec but their own Ken,

Yes. I was pretty much aware of that: I said that mainly because in my 
(somewhat limited) experience with Halli receivers, it was the most stable 
one I ever used. I meant that as a sort of insult to Halli receiver HFO 
designers.

> it was later
> chosen for military and government service and the AN/GRR-2 version
> was ruggedized but the circuit wasnt changed. The SX-28A was a "cost
> reduced" version for general military service.

I have always liked the looks and feel of the SX-28...

> The R-274/SX-73 was built for the military and is likely the most
> stable free running HFO that Halli built.

I had a chance to use an R-274/SX-73 when I was very active in AFMARS. I 
really liked it and was very impressed by it at the time. It confirmed my 
viewpoint that the only time Halli could make a stable receiver was when the 
military was involved in some way.

I still cannot figure out why their receiver HFOs were generally so bad...

Ken W7EKB