Brett, can you make an mp3 recording of what you're hearing? Maybe you
could post it to the AM forum where a number of Flex users hang out. I
do hear a buzzy quality on audio peaks during selective fades when
listening in the AM mode that I never hear with the SAM detector. When
listening to strong signals on the AM broadcast band with the AM
detector stations always sound perfect.
I made a pre-processed recording of an extremely clean AM signal (It's
another Flex so of course its clean!) on 80 meters yesterday. I then
used video/audio capture software to make two recordings as I played it
back with the AM detector and then again with the SAM detector so
exactly the same conditions are present in both recordings. The
distortion that I hear with the AM detector can be clearly heard as the
signal is tossed around during selective fading. That distortion is not
present at the same points of the second recording when the SAM detector
is being used. I'm not sure what can be done by the user to clean up the
"buzzy" quality while using the AM detector, unless some optimization
can be done in the DSP tab's AGC settings of PowerSDR.
AM detector -----> http://www.youtube.com/watch?v=AlVjEfE6Z28
SAM detector -----> http://www.youtube.com/watch?v=V9NkPXOFRmw
Does the first recording with the AM detector resemble what you are hearing?
Rob W1AEX (Flex 5K)
On 12/17/2011 1:00 PM, flexradio-requ...@flex-radio.biz wrote:
From: "Brett Gazdzinski"<brett.gazdzin...@verizon.net>
To: "flex Reflector"<flexradio@flex-radio.biz>
Subject: [Flexradio] still broke..
Message-ID:<43105127CDB447FE80140B761C9FAF85@brettPC>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original
I have a hard time believing that no one else hears this, its quite nasty on
my radio using headphones.
--
One thing I'm certain of is that there is too much certainty in the world.
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