[Elecraft] K3 in Very Heavy DQRM on 40M CW......

[Wes (N7WS)]

All the selectivity in the world wouldn't help when the a**hole EU was keying 
and swishing his VFO at about 0200Z tonight.

I finally worked them at 0401Z but wasn't sure because of QRM on their freq.  So 
I kept calling and worked them again for sure at 0414Z.  Inverted V, apex at 
45', K3S/KPA500.  Slot number 14.



On 2/4/2016 6:04 PM, W5RDW wrote:
> I thought I would try VP8SGI this evening on 40M, since I had not tried 40
> due to the horrible DQRM almost every night on their TX frequency. They were
> pretty loud tonight here in NTx (10-15 dB above noise floor). I use a Delta
> Loop at 50 feet. A DQRM was "almost" zero beat on their frequency and 20 to
> 30 dB louder than them, making it near impossible to copy them. And to top
> it off, there were also a few signals very near their Tx frequency also. I
> cranked the K3 filter down as far as it would go (50Hz) and tuned the VFO A
> just ever so slightly to maximize the SGI copy and throw a few dB more
> rejection on the DQRM. After a few seconds, I could copy him clearly to make
> the contact.
>
> This was the first time I have had to use that much filtering to make a
> contact!
>