[AMRadio] sdr-iq


Bernie Doran qedconsultants at embarqmail.com
Wed Feb 10 17:02:28 EST 2010


Thanks John: I thought I had checked everything several times, but will open 
the sound card file and look that over to be sure it is not doing something 
weird, Bernie
----- Original Message ----- 
From: "John Coleman" <jc at pctechref.com>
To: "'Discussion of AM Radio in the Amateur Service'" 
<amradio at mailman.qth.net>
Sent: Wednesday, February 10, 2010 2:17 PM
Subject: Re: [AMRadio] sdr-iq


> Hey Bernie:
> This is just a suggestion of what you might check into.  I am not
> familiar with the radio but have heard other brick radios that sound 
> pretty
> good.  Concerning the computer, it is possible, although you would not
> generally want it, to listen to the recorded sound while recording and at
> the same time listen to the input.  Obviously the recorded audio will be
> slightly delayed from the input causing an echo sound.  Most sound cards
> will record at the same time they are playing something, and have a 
> separate
> set of controls for recording than for playback however both sets may have 
> a
> listening level control.
>
> Just a suggestion on something to check.
> John, WA5BXO
>
> -----Original Message-----
> From: amradio-bounces at mailman.qth.net
> [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Bernie Doran
> Sent: Wednesday, February 10, 2010 12:03 PM
> To: Discussion of AM Radio in the Amateur Service
> Subject: [AMRadio] sdr-iq
>
> I purchased an SDR-iQ about five weeks ago and while it performs great in 
> a
> number of areas it seems to be poor in the audio demodulation, at least on
> AM,  I am getting what sounds like a low level echo and a general 
> artificial
>
> quality of sound, my 75A2 sounds much better and that certainly is not 
> good
> quality audio. it is difficult to copy a moderate level AM signal. the
> computer plays DVDs and CDs fine and sounds good. I talked to the store 
> that
>
> I purchased it from and they said they have heard this before and that I
> should not expect it to sound like a VT receiver!!!!! that was a  shock,
> what did I buy it for?.  computer is a single core 2.8 gig, it shows it
> running at about %75. any one else use these things? or have experience 
> with
>
> the Flex 5000a? Bernie
>
>
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