I find it interesting that TT may be selling the LDG
autotuner, considering the problem I had using it in my
Omni VI station. I built one of them from a kit about
2 years ago. It went together very well and performed
as advertised. However, I noted an increase of QRN when
operating full QSK CW with it. I became very sensitive
to internally generated noise in my shack because of
this, and at first I did not realize it was the
autotuner. I simultaneously had a problem with the Omni
6 "hearing itself" when certain parts of the front-panel
display were active, and TT told me to add a bypass cap
on the low-level board to fix that. There was still
another source of noise, and when I switched back to my
old TT 4229 antenna tuner, that noise
disappeared. I called LDG, and with some discussion they
speculated that I was hearing the processor in the
autotuner between each CW character as the AT-11 sensed
the SWR on the feedline. This was most obvious on
80-meter CW, where I operate daily (NTS nets). The only
solution was to defeat the autotune function entirely
by lifting a diode lead (switching it to manual does not
override the SWR autosensing) making the processor sleep.
I decided this was too much trouble and have stayed with
my old tuner. I made TT aware of this problem. So my
point is, I might be the only guy who had this
problem. I will be interested to hear results as more TT
users try out this autotuner.
73.
**********************************************************************
Scott Walker
New Cumberland, Cumberland County, Pennsylvania USA
E-Mail: N3SW@worldnet.att.net
CW: -. ...-- ... .--
**********************************************************************
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