[R-390] EAC SSB Conversion

[Dave Merrill]

Several years ago I contacted Columbia Electronics to see if they had any
info on the conversion but came up empty.


On Tue, Apr 30, 2013 at 2:10 PM, Todd, KA1KAQ <ka1kaq at gmail.com> wrote:

> On Tue, Apr 30, 2013 at 2:54 PM, Dennis Deaton <wa6acc at verizon.net> wrote:
>
> >
> > Several years ago, an article was published giving both the picture and
> > the schematic that EAC had produced for a foreign military's mod to the
> > R-390A to give it good SSB reception. It involved building a small
> > crystal-controlled BFO and product detector using a 6U8. Does anyone on
> the
> > list have that data? If not, could you point me to it?
> >
>
> If memory serves me correctly, it was Columbia Electronics that converted
> them for the Mexican government. Try google with R-390A, SSB, and one or
> either of those items and see if anything comes up. The article might have
> been in Electric Radio.
>
> de Todd/'Boomer'  KA1KAQ/4
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