Topband: New RF interference killing RX at my QTH

[Ashton Lee]

Be careful.

It could be grow lights from an illegal pot operation.


> On Nov 10, 2014, at 6:41 PM, Goldtr8 (KD8NNU) <goldtr8 at charter.net> wrote:
> 
> Well I made some progress tonight on the way home.
> 
> I used my mobile rig with hamsticks to listen while driving on the way home from work.  I tuned to 3.902 which is a very strong frequency that gets trashed at the home QTH and used a 40m hamstick as the receiving antenna. The idea for this setup was to be able to attenuate the signal as I got closer to it.
> 
> Anyway while driving home with the pre-amp on the IC-7000 when suddenly the noise was present and strong less than 1 mile from my house.    I drove around until it got real loud and turned the pre-amp off and it went away. I then drove around with the pre-amp on until it was at about an s7 on the meter then turned the preamp off as I was close and then drove around until there was about 1 s-unit showing on the meter. I could hear the noise with the pre-amp off when close and the s meter small reading confirmed that I was real close.
> 
> The noise is clearly in one subdivision close to my house but I can not tell what is the source at this time.  I also know the noise does not show up on the AM radio in the car although bad power poles do show up.
> 
> So to me major progress has been made, now I need to identify where in the subdivision or maybe what house this trash is coming from.  Next short term step is to listen to the links several folks have sent to me to see if any of them match what I am hearing so I know what I am looking for.
> 
> I will keep the list updated as I learn more about the problem.
> 
> Cheers and thanks for the tips so far.
> 
> Don
> 
> ~73
> Don
> KD8NNU
> 2014 3905CC Top Gun :-)
> -.- -.. ---.. -. -. ..-
> -----Original Message----- From: Jim Brown
> Sent: Saturday, November 08, 2014 3:22 PM
> To: topband at contesting.com
> Subject: Re: Topband: New RF interference killing RX at my QTH
> 
> On Sat,11/8/2014 9:33 AM, Goldtr8 (KD8NNU) wrote:
>> I need to make a noise finding antenna that I can take in my vehicle to look for a source of noise on 160m and 80m bands.
> 
> Several useful tools. 1) Tecsun PL380 -- a nice AM/FM/Shortwave
> portable, DSP IF, has built-in loopstick antenna. About $45.  2) A ham
> talkie that has wideband RX. My Kenwood TH-F6A does that and has a
> built-in loopstick antenna.
> 
> 73, Jim K9YC
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