[ICOM] Icom 756PRO question

Tue Feb 21 21:54:16 EST 2006

Sparks between your hands??
Time to move dude!!
That don't sound too healthy:(
...Dave
----- Original Message ----- 
From: "Cam and Juli Hedrick" <walnutcreek at appstate.net>
To: "'ICOM Reflector'" <icom at mailman.qth.net>
Sent: Tuesday, February 21, 2006 9:19 PM
Subject: RE: [ICOM] Icom 756PRO question


> Power line noise looks like what you are describing.  I just called in a 
> bad
> transformer that indicates the same thing you see on your scope.  It's on
> our property and given the frequency of lightning strikes we have, I'm not
> surprised to see it fail again.  We've had to replace it once after a 
> direct
> strike.  When we have thunderstorms you can feel the static in the air.
> I've had sparks go between my hands even.
> I've got a ground grid that has so far handled the strikes (1.5 miles of
> number 12 bare copper and 26 12' rods.  I've watched the strikes come off 
> of
> the towers and electric fencing on our horse farm.
> Boy I really left the subject.  Anyway, the power company is usually happy
> to check these things out; it's nice for them before an outage occurs in a
> storm here or anywhere.  Right now it even interferes with stereo and TV
> reception.
> Cam
> WA4JKW
> -----Original Message-----
> From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] 
> On
> Behalf Of Bonddaleena at aol.com
> Sent: Tuesday, February 21, 2006 8:50 PM
> To: icom at mailman.qth.net
> Subject: Re: [ICOM] Icom 756PRO question
>
> In a message dated 2/21/2006 6:31:58 PM Eastern  Standard Time,
> mike2004 at elp.rr.com writes:
>
> 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.
>
>
> ----
> Your Moderator: Dick  Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z,  14.316 MHz
> Icom FAQ: _http://www.qsl.net/icom/_ (http://www.qsl.net/icom/)
>
>
> I moved to my new QTH last May. This area is a very old town and I have
> identified 2 nearby poles that cause broadband RFI.
> To investigate, I use my Icom R10 with a a small 7 el Yagi (described by
> Kent Brittan, cut to 435 mHz). I hear the noise on my station radios, with
> my
> only antenna, a 'fan' yagi. I have 2 100' towers and antennas waiting to 
> go
> up.
> The small yagi is VERY directional, easy to carry and point, and this 
> makes
> it  easy to not only identify the offending pole, but actually which area 
> of
>
> the  pole is making noise. These appears to be common 'loose hardware'
> problems
> as I  have experiences MANY times in the past. My power company is working
> to
> resolve  the noise. They appear to have the tools and training to do so.
> Interestingly, the R10 produces MUCH louder (and stronger 's' units) when
> using the Noise Blanker in both the CW and SSB modes.
> In the shack, the 761 will almost always remove the noise, with either the
> normal or wide blanker, sometimes both. The 756PRO will NOT touch it. 
> That's
>
> the  only complaint I have with my PRO, the NB stinks!
>
>
> ron
>
> N4UE
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
>
>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/