[R-390] Below 500 kHz mod, again
John Seboldt
k0jd-l at seboldt.net
Mon Sep 27 10:21:42 EDT 2004
On 9/26/2004 10:23:07 PM, Cecil Acuff (chacuff at cableone.net) wrote:
> This was posted from Walter Wilson in January of 2001:
>
> <HSN issue 2 pages 3-4, or HSN reprints page 10 have the information you
> <need. The simple solution is to couple the antenna via a 0.05 mF
> capacitor
> <to test point E209. This bypasses the antenna coils and RF stage, but
> <allows you to receive longwave signals. Some people have used the
> <unbalanced input to feed directly around the RF amplifier stage to E209
> <through the coupling capacitor, and they hook their longwave antenna to
> the
> <unbalanced connector. I have not tried either of these.
>
>
> I found this while searching the archives....which
> ain't as easy as it used
> to be I might add...so much for progress!
>
> Cecil...
Yes, I knew it was something like this - quick and dirty - and I thought I
remembered somebody talking about wrapping it around one of the tube pins
too... you probably would want to build your own outboard input filter...
now gotta check for an equivalent point in the R392...
After I posted I looked through the archives, and for some reason it wasn't
easy to find, perhaps the thread subject wasn't totally relevant to the
contents...
To all those suggesting the upconverters... yes, duuh, that is always
possible with any receiver <g>
John K0JD
Milwaukee
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