[FedCom] Mex Interference

Wed, 07 Aug 2002 16:51:08 -0700

>From: Chris Parris <[email protected]>
>Reply-To: [email protected]
>To: "INTERNET:[email protected]" <[email protected]>
>Subject: Re: [FedCom] USFS/BLM/CDF I forgot...
>Date: Wed, 7 Aug 2002 13:03:58 -0400
>
>I used to live along the border in South Texas and there were quite a few
>frequencies scattered through the federal bands that were pretty much
>unusable due to stations on Mexico using the same freqs. For along time,
>there was someone in Mexico using 166.4375 mhz with a 100.0 pl tone, which
>happens to be the input frequency to most of the US Customs repeaters on
>165.2375 mHz. I had heard that they (Customs) was aware of the problem, but
>that they had to go through various diplomatic channels to get anything
>done...
>
>I know there are various treaties between the US and Mexico regarding
>communications interference, but I think a lot of the offending Mexican
>stations are just operating without license or anyone to shut them down...
>
>Chris Parris
>Beaverton, OR
>
> >> I do live very far from the Mexican border.
> >
> > However, I'm interested ... What is the 'Mexican Interference' ??<
>
>_______________________________________________
>FedCom mailing list
>[email protected]
>http://mailman.qth.net/mailman/listinfo/fedcom

  Various Mexican stations on numerous fed & forestry freqs making use near 
impossible. When we were out of fire season, the USFS radio techs set up 
"frequency interrupters" on all NIFC inputs, outputs, 170.0, and 167.95, 
basically rebroadcasting all of the Los Padres Forest Net traffic on these 
freqs. At the end of each TX, it would jump to the next freq, HOPEFULLY 
discouraging Mexico from using these channels, which go unused most of the 
time. The problem is so bad, only 2 out of 7 air tactics channels are 
usable, and 2 out of 6 Commands, and the 173.9125, .9625, and .9875 were 
added to the tacs because 168.050 is "jammed", and I believe 168.6 is 
farther down the border from me.
I believe .9375 is noticably absent is because of the mex repeater on it 
near here. So it's a real problem. BP had the same problem until they went 
digital. The 164.225 tac is jammed, as is the 166.875 (with the same 100.0 
PL- making it worse!). On the bright side, all the LAX Customs traffic on 
169.550 jams the main Tijuana PD channel (166.500), also making it hearable 
here in San Diego. So it's a big problem with both the feds and CDF. They 
also jam the new digital repeater (FBI?) on 171.175, NEST on 173.000 and 
167.850 (which is the air freq so it's worse), the FBI primary A1 input on 
164.350, and the list goes on and on...Ruff

_________________________________________________________________
MSN Photos is the easiest way to share and print your photos: 
http://photos.msn.com/support/worldwide.aspx