[nrv-hams] HF help request

[Lenford Sutphin]

Low watts AM 

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  On Sun, Aug 26, 2018 at 12:12 PM, Knight, Dave<diemkae at gmail.com> wrote:   I have used my Icom-735 + MFJ-939 antenna tuner setup successfully in the
past, but it's been a while because the antenna had to be taken down for a
remodeling project.  Now it's back up and I don't seem to be able to get
the MFJ-939 to tune using "what I remember" (set power low (10W, and CW,
press XMIT) as the  manual tuning procedure.  At this point, I don't know
if it is a problem with the antenna (an off-center fed horizontal dipole
from MFJ, IIRC), the coax cable, or "operator error".

I have reset the MFJ-939 to factory defaults, run all the diagnostics from
self-test thru the power down & relay tests with no failures, per the user
manual.

However, when I try to tune the antenna at 7.255 MHz/CW/10W (where I have
previously talked to some ECARS folks), I get a solid green LED on the
MFJ-939 (seems normal), but when try to XMIT on either SSB, at higher power
(25 W) the green LED goes out and I get some relay clicking and a Morse
beep w/red LED blink error code(?) that I don't understand (I've forgotten
what  MC I learned 60 years ago) and the green LED stays out.

FWIW, I seem to get the same error code when I XMIT on SSB whether the
antenna cable is connected or not, which suggests to me a cable problem,
but I don't have any other test equipment to check it out.

I'd appreciatee any suggestions - other than buy some test equipment (no
more hobby money at this point).

Thanks,
Dave
--

In your time of need, may your piece be with you!

The trouble with many of today's college graduates is not that they're
ignorant, it's that they've been taught so much that just isn't so!

                                                      (with apologies to
Ronald Reagan).
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