[Elecraft] Possible phase noise question...

[Phil Wheeler]

No.  Can you swap to a different Signalink USB?

Phil W7OX

On 6/30/14, 12:45 PM, David Cole wrote:
> Hi,
> I have a friend who lives about 1/2 to 3/4 of a mile from me.  He is
> running a 706 MK2G, at around 10 watts.
>
> In the past, while using a Pro III, when he came on, I was able to copy
> and see signals using JT65, and work stations right next to him.
>
> After getting the K3, I believe I was able to do this as well, or
> better...  Suddenly his signal is sprayed across the entire audio
> spectrum to the point, I can't even tell what frequency he is on...
>
> I get a solid white block using WSJTx.  He and I enlisted a third
> friend, to insure it was not just me that is seeing him as very wide.
> The third friend lives about 4 to 5 miles from both of us, and is line
> of site to my friend with teh 706 MK2G.  When the 706  MK2G lets loose,
> I see the spray, but my friend does not...  He sees a nice tight signal.
> It looks and sounds like phase noise...  However...
>
> If he just does a Key down for CW at 50 watts, I can copy stations right
> next to him...  It is as if his sound card, (Signal Link with internal
> sound card), is adding a low level hiss to the audio, I see it due to
> proximity, and my friend does not again, because he is much further
> away...
>
> This has started suddenly, and the owner of the 706 can not pin a change
> to it...  We swapped in a different 706MK2G, and the same problem still
> happens...
>
> Has anyone heard of this happening with a SignalLink sound card before?
>
>