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Re: Topband: Difficult rxing in contest environments in EU

To: topband@contesting.com
Subject: Re: Topband: Difficult rxing in contest environments in EU
From: Björn Mohr <bm@broadcast.se>
Date: Thu, 29 Jan 2009 17:38:56 +0100
List-post: <topband@contesting.com">mailto:topband@contesting.com>
On 25 jan 2009, at 13.22, Wolf Ostwald wrote:

> One needs to contest on a band with virtually no "dead zone" in  
> Europe, to
> grasp the rx-difficulties over here. "Frequency fights" and deliberate
> jamming are a common thing, due to the small band in comparison to the
> number of contestants.

Even with a fine radio like the K3 and directive RX antennas contest  
QRM in EU is challenging. On several occasions I had to narrow down  
the passband to 100 hz to be able to continue running. And even then I  
had stations deliberately move in closer to me including one well  
known contest station trying to highjack my running frequency. But I  
guess this is part of the challenge, like Ice Hockey - tackle the  
player with the puck. So I take it as a compliment, I had the puck! :)

Anyway, running on 100-150 hz I know I missed several callers not  
calling inside my passband. Several stations I found well outside my  
passband closer to the "neighbour" which of course created confusion.  
I also suspect I missed many JA stations calling me below or above the  
passband. I was able to detect a few right after my SS, but when EU  
QRM came in full force JA drowned in QRM.

Anyway, it was a fun contest and the QRM is a challenge, not really a  
problem.

73 de Björn,
SM0MDG
SE0X





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