[amsat-bb] FT726R parts available?
wageners at gmail.com
Sun Feb 4 03:18:38 UTC 2018
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
> 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.
> Ron VE8RT
> Ron VE8RT <ve8rt at yknwt.ca>
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