Topband: AM interference on 1840

Tue May 21 07:50:02 EDT 2019

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.


On Tue, 21 May 2019 05:32:24 -0400
  "Edward Sawyer" <sawyered at> 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
> _________________
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