Topband: Contest

[Mike Waters W0BTU]

> From: Bill Tippett <btippett at alum.mit.edu>
> Subject: Re: Topband: Contest
> To: "topband" <topband at contesting.com>
> Date: Monday, February 1, 2010, 3:38 PM
> KH7C wrote:
> 
> > Not that I am loud by any means,  but man when
> you are
> 20 over 9 and cant hear dozens of people calling wazzup?
> 
> WB8DSB replied:
> 
> > I used to think the reason big guns did not hear me
> were due to their
> running directional receiving antennas, but I now suspect
> the majority of  the
> problem has to do with the very narrow receive filters
> they  run.  During
> this recent contest numerous big guns did not hear me
> when  they were full
> scale on my S-meter, so I just kept changing my frequency
> ever so  slightly and
> then they magically came right back.  It's
> amazing  how just a slight change
> in my TX frequency made all the difference in the 
> world.
> 
> I agree.  Here's a related comment from my 3830

[snip]

I run a 600 Hz roofing filter in my R-4C, and either a 250 Hz or 125 Hz last IF filter (all by Sherwood Engineering). I don't hear anyone that's not in my passband, no matter what their signal strength,.

I didn't have a decent transmit antenna in this contest :-(
Hopefully, that'll change in the next one.

73 Mike