[Hallicrafters] SX-117 engineering changes

rbethman rbethman at comcast.net
Sat Mar 8 20:25:24 EST 2014


There is another of these that does also does a remarkable job.

Specifically the R-42 Producer.

I've brought the 8 ohm with plain old electrical zip cord.

I can use the 500 or 600 feed, or can indeed go direct with 8 feed.

I have managed to obtain two of these.  I'm more than happy with both.

One is attached to my Northern Radio Variant SP-600.

The den/shack still isn't a completed project.  The XYL has interrupted 
the process for the moment.  She wishes to use TSP to clean the cheap 
paneling, and to then paint over it.  To a degree, my patience is 
wearing a bit thinner than usual.

I truly wish to gain back MY space.

Sincerely, Regards,
Robert "Bob" Bethman
N0DGN


On 3/8/2014 8:10 PM, Jim Liles wrote:
> Hi Jim:
>
> The R48A set to voice, does a pretty good job of attenuating 60 cycles.  In normal mode 60 cycles is not bothered comes through like anything else.  There are a bunch of radios out there that experience the hum on the R48A when in normal mode.
>
> For me, the audio from the R48A in normal mode is very pleasant and intelligible for me.
>
> My favorite radio required some extraordinary changes in order to reduce the hum to a point where it was inaudible with the R48A.  It also has some of the best SSB audio out there.
>
> Kindest regards Jim K9AXN
>
>
>
>



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