In a message dated 3/20/2006 7:33:24 AM Eastern Standard Time,
k4qo@earthlink.net writes:
Any chance this is rf in the shack? (or at least in the radio?)
I appreciate the suggestion and I have considered it. There is always a
chance of RF in the shack either from unbalanced antenna loads, bad grounding
or
the radiated power from the antenna. We ran about 700 watts to a tribander
on the roof, and wire antennas in the back yard. All antennas were about 50
feet away. In this case, I am well grounded and have no other evidence of RF
in the shack: no biting metal, no interference on the monitor, no erratic
behavior from the computer, no distorted audio on the transmit side. A Yaesu
FT100D was used on 6 meters and above and it never hiccuped once.
A small yard means we must operate pretty close to our antennas. If radiated
RF from the antennas caused the lost receive audio and the erratic volume
levels on the monitor, that would be nice to know. It means (to me) the
computer components in the radio need better shielding at the factory.
Today I turned the radio on and playing 40 watts into a dummy load, the
Monitor level was still way overdriven (setting of 2 would blow you away with
the
AF Gain 1/4 the way up). I performed a Master Reset and the Monitor and
Sidetone levels are back under control.
The crackly distorted receive audio has happened when just listening and it
was a common complaint about two years ago with whatever software was coming
with the radios then. I described this sound before as sounding like the DSP
was eating the signal. I don't think RF has anything to do with that.
The ineffective NR speaks (or doesn't speak) for itself. Bring back 1.371!
K4ia "Buck"
Fredericksburg, Virginia USA
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|