[Boatanchors] QRM

[Bonddaleena at aol.com]

In a message dated 1/10/2006 12:22:16 PM Eastern  Standard Time, 
k0ewu at juno.com writes:
HI I've been there--
Any device that  has a remote control or a clock shall be suspect.
I have a 19 in RCA tv in  the bedroom, I traced the noise all over 
the house- the tv was the culprit,  the separate power supply for the
remote rx.. I have "sniffed" around here  and 
found other sources such as the battery charger for the cell phone  
and an old garage door rx.
Anything may be  suspect.
To drastic - when all  else fails use your sniffer radio and
turn off the main breaker at the power  panel, yes I know that you 
will have to reset all of the damn flashing  digital clocks!
Then if it does not go away look at the neighbors  stuff.
have fun with this ..
old jack

On Mon, 09 Jan 2006 21:28:31  -0700 telegrapher at att.net writes:
> What would have a raspy signal every  65 kc?  I hear it on all my 
> receivers, R-388, 51J-4, SP-600,  AR-88, FT-990 etc.  All over the 
> place. 
>   1885  Kc, wipes out signals from local hams transmitters, again at 
> 1949  
> kc, 2014 KC and again (in the am portion of the band) 3859 kc but  
> drifts 
> around here.  Almost makes me think of a TV  transmitter oscillator 
> but 
> on 160 meters where it's the  strongest, some kind of teledata like 
> what 
> you might hear down  in the 200-400 kc band.  Runs from S-9 to 10 
> over on 
> 160  meters.
> 
> I've turned off everything, unplugged stuff changed  antennas around, 
> 
> checked grounding and antenna connections to  no avail.  No touch 
> lamps 
> here and no battery chargers  for cell phones etc.  BTW, i found that 
> 
> plugging my cell  phone charger for the truck into the cigarette 
> lighter 
> outlet  tears up the AM band.
> 
> It's not 65 kc apart on 80 meters but  about half that.  Don't have 
> anyone really close to me that could  listen as well but no 
> complaints 
> from hams 12 or so miles up  the road.  This is driving me nuts.
> 
> I'm suspecting  something from a neighbors house but that can be a 
> delicate  situation.
> 
> Larry
> W0OGH
> 
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**  List Administrator - Duane Fischer, W8DBF/W9WZE **   
** For  Assistance: dfischer at usol.com **          
$$ For vintage radio info, see the HCI web site  $$      
http://www.w9wze.org     


You didn't say how far up the spectrum the noise goes. If you have a small  
multi-band radio, like an Icom R10, build one of Kent Brittan's 'cheap yagis'.  
They cost virtually nothing and I have made them for 144, 220, and 432 mHz. 
The  higher in frequency you go, the smaller and sharper the yagi will be. I 
was  hearing typical powerline noise a while back and grabbed the 432 ant (only 
about  5' long and with the PVC boom, weighs about nothing), and the radio and 
even in  my yard, it easily pointed to a pole a couple of hundred yards away. 
Took a walk  towards it and it kept getting louder. Standing at the base of 
the pole, you can  almost pinpoint the individual loose bolt causing the 
problem. Not quite, but it  sure puts you VERY close. 
I use SSB or CW mode and on the R10, turning on the Noise Blanker, REALLY  
makes the noise pronounced!
With this set-up, you will easily find your noise.
Been there (many times!), done that, got the t-shirt.
 
 
ron
 
N4UE