[amsat-bb] Fox Delta ST2 issue

[Charles Reiche]

Hi Craig,

Do the readings on your yaesu control box AZ meter read correctly or are
they also wacky?
Looking at the circuit diagram, the AZ pot and the output to the plug that
runs to the ST-2 goes through different circuitry to the plug than to the
meter in the control box.
If the control box meter reads correctly, then the problem is probably in
the circuitry that connects to the external plug that goes to the ST-2.

Measure your 5v bus on the interface is actually running at 5v. I had
problem with my voltage regulator (I soldered it in backwards) and did not
have 5v where it needed to be.

Thanks,
Charles Reiche


On Sun, Aug 16, 2020 at 3:37 PM D. Craig Fox via AMSAT-BB <
amsat-bb at amsat.org> wrote:

> Greetings all. I searched the amsat BB archive but found no answer so
> posting this. For no apparent reason, my FD st2 connected to my G5400 has
> just started misbehaving after working great for months. Using W10. It is
> displaying incorrect AZ, while EL is correct.  It parks the G5400  at 225
> deg instead of default 300.  It will show EL in excess of 500+ deg when
> manually turning the G5400 clockwise. I have the most current driver for my
> usb-serial cable. Im thinking I need to reset the EPROM but an find no
> directions on the FD website or internet on how to do this after initial
> setup.  I will email Dinesh at FD if no answers.
> Any help would be appreciated.
> Thank you and 73 from OC DM13
>
> Craig
> N6RSX
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