I’d sure take a peek at the balanced modulator. It appears that carrier is
getting though. I don’t recall if they used didoes or a IC.
Mike, WB8VGE
www.theheathkitshop.com
> On Jun 11, 2020, at 4:27 AM, ROLAND HOWELL via TenTec <tentec@contesting.com>
> wrote:
>
>
> Hi all
>
> Thanks to Martin and Dave for the advice so far.
>
> One thing is puzzling me with the radio and that is this, When I switch to
> SSB (upper or lower) the radio transmits what ever power level has been set
> with the drive control, I have always thought that it only transmitted with
> audio is applied via the mic, or have I got it wrong!.
>
> I am wondering if I have additional problems.
>
> The voltage levels on the 4558 appear to be correct, I have changed it anyway
> but the voltage on U1 pin 1 is only <3v not what is written, all other pin
> voltages are correct.
>
> So more head scratching today ( I must be careful of getting splinters ha ha).
>
> stay well and happy
>
> 73
>
> Snowy G0HZE
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