[amsat-bb] FT726R parts available?

[Stefan Wagener]

Take a look at Ebay. Seems to be lots of parts for sale right now.

73 Stefan, VE4NSA

On Sat, Feb 3, 2018 at 6:58 PM, Ron VE8RT <ve8rt at yknwt.ca> wrote:

>   I was given a FT726R with the 6 2 and 70cm modules, the maintenance
> manual, and a few spares.  As I was adding a CTCSS tone board it seemed
> like a good idea to check the adjustments and alignment.  Unfortunately
> I've found that the TX balanced modulator doesn't balance.  Checks were
> made for noise on the 13.8 VDC and regulated 8V (which powers the
> uPC1037H modulator) and these lines are quiet.  The maximum carrier
> suppresion I could get from adjusting VR05 was 25dB, far short of the
> specified >40 dB.  There is a good voltage swing on VR05, but the
> voltage on pin 6 of the modulator changes very little.  I suspect it's
> failed.
>
>   Can replacement uPC1037H's be found.
>
>   If I get this sorted then I'll ask about how to run it duplex and do
> the Doppler correction on SSB or CW.
>
>   Thanks,
>
>        Ron VE8RT
>
> --
> Ron VE8RT <ve8rt at yknwt.ca>
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