Ted, Graham,
Please hurry and figure this out. That CTCSS tone is driving me nuts.....
There must be some filter we have to turn on or adjust.....
73
Lee K9WRU
----- Original Message -----
From: "Graham Haddock" <[email protected]>
To: "Ted Leonard" <[email protected]>
Cc: <[email protected]>
Sent: Wednesday, May 18, 2011 1:22 PM
Subject: Re: [FlexEdge] More on 6M hum
Ted:
There is a 300 Hz High pass filter in the audio path. Tones below 150 Hz
should be attenuated
by over 40 dB.
Where are you getting the audio from? Are you using the audio output jack
on the radio?
--- Graham
==
On Wed, May 18, 2011 at 1:32 PM, Ted Leonard <[email protected]> wrote:
Hi Graham,
Thank you for the speedy reply. My Neighbor and I have tried all sorts of
AGC settings to no avail as far as the hum is concerned.
If we turn off the tone the hum goes away and audio is fine. My repeater
sends out 127.3 at about 350 Hz level for PL most receivers of course
strip
it off
so you don't hear it.
If we go to simplex on 6 FM and use the tone the hum is there, turn off
the
tone and hum is gone. Playing with AGC settings has
not even reduced the hum as long as a tone is present.
My humble thought is the low end needs to be filtered out then all will
be
well.
Ted W3VG
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This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is
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posting topics related to SDR software development and experimentalist who are
using beta versions of the software.
