I too think roofing filters are really not well understood. For the
record, I have the stock SSB [2.7 KHz? I don't actually know] and the
500 Hz CW. In 99% of my operating situations, it doesn't matter which
one I use, I set the received BW with the DSP, and I'm a very happy ham.
I do have several close HP contesters, WX6V is one. On CW if I were to
use the 2.7 roofer, even with a 250 Hz DSP, Jim will desense my K3 --
like maybe 1.5 miles as the electromagnetic waves travel. The roofer
makes a difference with strong close in signals. Whether or not you
want a 1.8, 2.7, 5-pole, 8-pole, or whatever may be trying to pick fly
poop out of the pepper for most of us. If you run a lot of CW in
crowded conditions, a more CW-ish filter is likely good for you.
My neighbor Jim got a K3 early this year, replacing an ICOM<something>.
Still just as strong on frequency, all of the phase noise has
disappeared, no clicks -- nothing. Yet again, I'm a happy ham.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org
On 5/11/2014 7:02 PM, David Gilbert wrote:
I completely agree with all of that except for the very last sentence.
Clearly you've never used a 756Pro (first version) in a major CW
contest. I can remember very loud stations 10 or 15 KHz away completely
desensing my receiver to the point that the station I was trying to copy
simply disappeared. When I switched to the K3 the difference was
astounding.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
