[R-390] EAC R-390 factory modification that incorporates USB/CW/LSB

[Tim Shoppa]

"TChirhart" <sparks at codepoets.com> wrote:
> Does anyone know any anyR-390's that were modified under contract that
> removed the BFO on/off switch and replaced the BFO pitch control with one
> control?  I saw an R-390A, EAC contract that had this modification. A
> vertical 1 inch by 3 inch matching grey panel plate was installed over the
> two switches and only one control remained. It had a LSB CW USB position
> where the BFO pitch control previously was located. The owner indicated that
> this was a rare factory modification. Sorry no photos were taken. So was
> there ever a modification of this nature that was not an aftermarket add on?
>
> 73
>
> Tom K4NCG

If this has a 6U8 added as well behind the front panel, isn't this
the "Mexican Military" version by Columbia Electronics?

Tim.