Changing from "DirectSound" to "MME" also fixed the popping
problem here.
?
73 de Tom NU8D
Hi Bruce,
That fixed it!? The background would pop
and shift levels even with no
antenna or signal generator connected.?
Quite annoying when listening to a
faint signal.? Now that I got that
taken care of, tonight I will work on
spur nulling and checking on the
amplitude level readings (did not agree
with performance verified HP signal
generator when I was testing it last
night).
The computer I am using is a
Dell 3.06 Ghz machine with XP and 512 MB of RAM
so this should be fast
enough.
Thanks again.
Chris
KD4PBJ
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----- Original Message -----
From: "Bruce Beford"
To:
Sent: Thursday, October 06, 2005 6:44
AM
Subject: [softrock40] Re: Softrock up and running but need a little
guidance
> Hi, Chris.
>
> Re: The "popping sound" and
shift in signal levels- (when you say
> the signal level goes from -140
dBm to -50 dBm during these jumps, I
> am sure you are talking about the
background signal, not the output
> of the signal generator itself.) This
sounds like the Windows audio
> driver issue that many of us have seen. Go
to the Audio tab of the
> PowerSDR Setup screen. Set the audio driver to
MME, instead of
> Windows DirectSound. Hope this helps.
>
>
73, -Bruce, N1RX
>
> .--- In softrock40@..., "Chris
Waldrup"
> wrote:
>
> >
Tonight I hooked it up to my 8640 generator and hear the tone
> fine, but
every few seconds there is a rapid succession of a few
> clicks where the
signal dies and then comes back.? The signal
> strength goes up from
about -140 dBm to mid -50's.? The LED does not
> flicker at all
during this (I had thought that the USB connector may
> be loose) and I
tried connecting the USB connector up to my wife's
> new laptop and I get
the same result.? I also connected the radio up
> to my antenna to
rule out the generator acting funny and I get the
> same result.
>
>
>
> > Chris Waldrup
> >
KD4PBJ
>
>
>
>
>
>
> Yahoo! Groups
Links
>
>
>
>
>
>
>
>
>
