Re: PSK31 & DM780
Posted by
KK7P on
Feb 19, 2009; 6:04pm
URL: http://elecraft.85.s1.nabble.com/PSK31-DM780-tp2354428p2354475.html
> Has anyone else using DM780 with a K3 noticed that very strong psk sigs produce other images on the waterfall? It is about 2k further up or down from the original signal and can be decoded on the screen although weaker. I'm also running LP-Pan but don't notice the images on the panadapter.
Could be LINE OUT level too high or sound card IMD.
> Also related, do strong signals wash out the waterfall display so that weaker ones vanish?
This is due to AGC action.
> I do center signals I wish to work and cut the filter down to 500hz or so to avoid strong signals in the passband and most of the time it works great.
I often narrow it down to 100 Hz and sometimes 50 Hz!
73,
Lyle KK7P
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