Topband: AM interference on 1840

Jorge Diez - CX6VM cx6vm.jorge at gmail.com
Tue May 21 11:36:25 EDT 2019


Hello Bruce

is not in my country, this BC is from Colombia 8HK), but i contacted some
friend in HK and he complain in the HK radio office

73,
Jorge

El mar., 21 may. 2019 a las 12:20, FZ Bruce (<k1fz at twc.com>) escribió:

> In the past we have chased second harmonic  interference problems  on 1820
> KHZ.
> Eventually broadcasters have cleared  problems.
>  It's in the best interest of everyone to keep the band  clear as
> possible.
>
> Jorge, you may eventually need to contact your government licensing
> office.
>
> 73,
> Bruce,  k1fz
>
> -----------------------------------------
> From: "cqtestk4xs--- via Topband"
> To: topband at contesting.com
> Cc:
> Sent: Tuesday May 21 2019 9:50:20AM
> Subject: Re: Topband: AM interference on 1840
>
> I don't have a dog in the fight but why not move to 1843 or 1844.  Is 1840
> sacrosanct?
> Bill KH7XS
>
> -----Original Message-----
> From: Jorge Diez - CX6VM <cx6vm.jorge at gmail.com>
> To: Edward Sawyer <sawyered at earthlink.net>
> Cc: GEORGE WALLNER <aa7jv at atlanticbb.net>; TopBand List <
> topband at contesting.com>
> Sent: Tue, May 21, 2019 12:51 pm
> 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
> >
> : http://www.contesting.com/_topband - Topband Reflector
>


-- 
73,
Jorge
CX6VM/CW5W


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