Topband: AM interference on 1840

[Edward Sawyer]

Jorge.  I agree the harmonics are not acceptable.  But between fishing buoys and other birdie type QRN, moving around to find a clear frequency is not new to 160M, nor ham radio in general.  Its part of what we do.  As soon as something channelizes – its very limited quickly.

 

Ed  N1UR

 

From: Jorge Diez - CX6VM [mailto:cx6vm.jorge at gmail.com] 
Sent: Tuesday, May 21, 2019 8:50 AM
To: Edward Sawyer
Cc: GEORGE WALLNER; TopBand List
Subject: Re: Topband: AM interference on 1840

 

Ed

 

FT8 can move, but 1840 still is useless to do CW, so is not a FT8 problem

 

George said the two big problems, hope this not increase with harmonics

 

73,

Jorge

CX6VM/CW5W

 

El mar., 21 may. 2019 a las 8:52, Edward Sawyer (<sawyered at earthlink.net>) escribió:

I agree with the 2 messages.  But there is a 3rd.  The inability for the FT8 crowd to QSY around some interference.  Interference is a fact of life.  And we have QSY’s around it (even as it is being worked) for a century.



Ed  N1UR



From: GEORGE WALLNER [mailto:aa7jv at atlanticbb.net] 
Sent: Tuesday, May 21, 2019 7:50 AM
To: Edward Sawyer; topband at contesting.com
Subject: Re: Topband: AM interference on 1840



There are two messages in this topic: One is the interference from this particular BC station. Not a crisis, not yet. Two is a warning: Newly installed solid-state AM broadcast amplifiers in poorly regulated regions, over time, will have the potential to fill the entire 160 meter band with harmonics. The second part is not trivial and should be a heads-up. The earlier we find ways to deal with it, the better.



73,

George,

AA7JV



On Tue, 21 May 2019 05:32:24 -0400

"Edward Sawyer" <sawyered at earthlink.net> wrote:

While the harmonic interference is unacceptable and needs to be dealt with,

isn't this only "a crisis" because of the simplistic FT8 solution of

bunching everyone up on a small channel? It reminds me of the old CB days

when something would happen on a certain channel but no one would move

because they have always had the radio on channel 2 and that's where all

their buddies are. Or the 75M pig farmers that refuse to move but complain

and harass on QRM that was there before their daily time started.



For those of us using CW on topband, this isn't a real problem except for a

contest weekend. And honestly, it will just get moved around, like the

Middle East jammer on 3807.



73



Ed N1UR



_________________

Searchable Archives: http://www.contesting.com/_topband - Topband Reflector



_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector




 

-- 

73,
Jorge
CX6VM/CW5W