Mine appears as a rippled flattop. Perhaps I can send you a screenshot.
Reminds me of Devils Tower in Wyoming.
Edwin Marzan
AB2VW
From: "Fred Brandeberry" <[EMAIL PROTECTED]>
To: "Edwin Marzan" <[EMAIL PROTECTED]>
Subject: Re: [Flexradio] Do I have an RF feedback problem?
Date: Thu, 11 Jan 2007 13:25:06 -0700
Edwin,
Mine is similar, if I use the mike connection on the SDR1000. If I
connect the mike directly to the D44 box, it drops to -60db or better. In
my case the "noise" has been described as a hum, not a rushing sound
though. I am curious to know what the panadapter "pedestal" looks like,
smooth, rippled, flat, or like mine approximately exponential increasing on
lows.
73,
Fred
WA8KCW
----- Original Message ----- From: "Edwin Marzan"
<[EMAIL PROTECTED]>
To: <flexradio@flex-radio.biz>
Sent: Thursday, January 11, 2007 10:20 AM
Subject: [Flexradio] Do I have an RF feedback problem?
Greetings,
I noticed another flexer mention that his noise gate setting was -23db,
mine
is set at about -30db. I thought both figures were quite high. When I
transmit I notice my reading in the panadapter is about half scale when
I'm
silent (if that makes any sense) and when I speak it goes higher. Some
people told me it sounds as if there is air rushing into my background. I
unplugged the microphone and when I key the PTT the panadapter reading is
still about half scale. When I slide the microphone gain up and down I can
still see the reading go up and down with no mike attached. Is this normal
behavior? Or is this a gounding issue? Or is this an RF feedback symptom?
I can get rid of the wooshing sound in my audio by using the noise gate
but
was curious to know how others have set their noise gates. When I listen
using the monitor function my audio sounds OK to me, the wooshing sound
appears low. When I record myself using the built in recorder it sound OK
as
well on playback.
Any comments appreciated.
Edwin Marzan
AB2VW
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