[RFI] Fwd: Re: broadcasting interference

[Dan Violette]

And maybe list the radio for us.  I know an IC-765 that would rectify nearby AM radio station and then heard across 80M band.  A broadcast radio filter (high pass) in the receive line took care of that.  Also may have a problem in the front end (damaged parts) that are now causing rectification.

Dan KI6X

-----Original Message-----
From: RFI [mailto:rfi-bounces at contesting.com] On Behalf Of Jorge Diez - CX6VM
Sent: Monday, April 14, 2014 5:28 PM
To: rfi at contesting.com
Subject: Re: [RFI] Fwd: Re: broadcasting interference

Hi Frank

Well, will be not easy to find another ham in my city!

I tested today from home, less than 1 kmts from the broadcasting antenna and didn´t notice it. I am using a SteppIR antenna in 20 mts position to listen on 3500 Mhz.

So this week will go again to CW5W and will test again there

Thanks,
Jorge


-----Mensaje original-----
De: RFI [mailto:rfi-bounces at contesting.com] En nombre de donovanf at starpower.net Enviado el: lunes, 14 de abril de 2014 12:34 a.m.
Para: rfi at contesting.com
Asunto: [RFI] Fwd: Re: broadcasting interference

Hi Jorge,

Its best to ask a few other hams to run the same test at their QTHs.
You could be experiencing 10 kHz-spaced intermod products, if thats the case they shouldn't show up at other QTHs. They could be generated outside your QTH but distant from the broadcast station

73
Frank
W3LPL

----- Original Message -----
From: Jorge Diez - CX6VM <cx6vm.jorge at gmail.com>
To: 'Tom Thompson' <tlthompson at qwest.net>, rfi at contesting.com
Sent: Sun, 13 Apr 2014 18:35:30 -0400 (EDT)
Subject: Re: [RFI] broadcasting interference

Hi Tom

Ok will do that, thanks for the help

73,
Jorge
CX6VM/CW5W

-----Mensaje original-----
De: Tom Thompson [mailto:tlthompson at qwest.net] Enviado el: domingo, 13 de abril de 2014 05:40 p.m.
Para: Jorge Diez - CX6VM; rfi at contesting.com
Asunto: Re: [RFI] broadcasting interference

Hi Jorge,

I would first confirm the reception on a different antenna and receiver. 
Also, see if it occurs every 10 kHz below 3500. It sounds like it might be in their equipment. I recall a similar situation where there was a 10 kHz oscillation in a power supply that was causing the signal to reappear every 10 kHz from the fundamental. Just guessing, however.

Tom W0IVJ


On 4/13/2014 2:10 PM, Jorge Diez - CX6VM wrote:
> Hello
>
> 
>
> Today I arrived at the station to work on my 80 mts antenna and 
> noticed the local AM broadcasting (1340 Khz) in the 80 mts band every
> 10 khz, at 3500, 3510, 3520, 3530, 3540, 3550  .3600 ..
>
> 
>
> They were transmitting soccer game so I think they are using full 
> power that I believe is 10 KW. The broadcasting is 30 kmts from my 
> station
>
> 
>
> What s that, is a problem here at my side? Or may I ask the 
> broadcasting to check their equipements?
>
> 
>
> 73,
>
> Jorge
>
> CX6VM/CW5W
>
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