[ICOM] Icom 756PRO question

Michael P. Olbrisch mike2004 at elp.rr.com
Tue Feb 21 18:31:01 EST 2006


Hi Dick,

	Now that (I THINK) I have my E-mail problem solved.....  Might I
interject an observation here.  Working for a power company, I might have a
suggestion.

	If you can. Check around the neighborhood for a light that is going
on and off.  I have seen sodium vapor street lamps do what you describe.
The light will be on and/or off along with the noise.  Not being in the
street lighting section, I cannot pin the cause further than that.  But my
thoughts are that it is a failed sensor that senses daylight or darkness to
turn the light on or off.  It is possible that it is also blinking on and
off even in the daylight - just not as easy to see.

	I cannot speak for your local power company.  But our company (El
Paso Electric) responds very well to noise complaints.  They have an arsenal
of tools including infra-red night vision and gyro-stabilized 70 power
binoculars for investigating noise, arcs, etc.  Arcs waste energy, and can
cause system outages.  We actively try to avoid system outages!!!  <grin>...

	Good luck - and let us know what you find.  There is nothing more
frustrating to an ICOM owner than having some of the finest ICOM gear money
can buy, and not being able to listen to it.  Especially my R-9000!!!

Mike.  KD9KC
El Paso, TX.

> -----Original Message-----
> From: icom-bounces at mailman.qth.net 
> [mailto:icom-bounces at mailman.qth.net] On Behalf Of Dick Flanagan
> Sent: Tuesday, February 21, 2006 10:57 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] Icom 756PRO question
> 
> 
> I don't want to belabor the point as this could quickly 
> diverge away from 
> anything ICOM-related, but to the extent it might help 
> determine if the 
> current crop of ICOM noise blankers might help it, I will cut 
> myself a 
> little slack here.
> 
> The noise I am experiencing is broad-banded.  It is 
> predominantly on the 
> lower bands, but I can hear it on higher frequencies albeit 
> significantly 
> reduced in amplitude.  My normal "sitting" 80 meter noise 
> level is S4-6 and 
> on a band scope it looks like the usual "grass" and signals 
> across the band.
> 
> When my noise source starts, my noise level will rise to S9 and this 
> saw-toothed wave will cover the bottom of the scope across the entire 
> band.  The noise doesn't have clicks or other rhythmic components to 
> it.  The noise will continue for anywhere from ten seconds to 
> five minutes, 
> be off for a similar random period and then start again.  
> Some nights it 
> isn't there at all.  Other nights I have to go watch TV.




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