[RFI] RFI Digest, Vol 115, Issue 23.....identification or rfi
dave at nk7z.net
Sat Aug 25 22:15:45 EDT 2012
Thanks for the information here... I expect to be pealing this onion
for the next few months... The one saving grace in this is, when the
Vault is noisy, I am noisy, when the vault is quiet, I have about an S3
noise level... I might get lucky and have everything coming from the
single source... Then again... Sigh...
http://www.nk7z.net for equipment reviews, propagation, and more...
For JT65 Discussions:
On Sat, 2012-08-25 at 10:53 -0500, Eddie Edwards wrote:
> The fact that you have two different levels of noise could possibly mean you
> have two different noise sources, not one. When the level of noise dropped
> from source number 1, only then could you begin to hear the weaker noise
> source number 2. We've seen this happen quite often. Also, if you didn't
> taken an o'scope reading from your ham shack and find it matched the weaker
> noise, then it may not be the source you are hearing. Without remembering
> your details around your station, I'm assuming you probably have several
> local noise sources that you do not even hear on the radio.
> If the stronger noise returns after the repairs are completed, then you'll
> still need to locate that noise source. If not, then whatever work brought
> the lineman out on Friday may have already eliminated the stronger noise.
> Hopefully it won't return.
> I'd be very interested in finding out what brand/model of device the
> lineman/tech was using if you could find out and share with us on the list.
> 73, de ed -K0iL
> -----Original Message-----
> From: Dave Cole
> I may have gotten really lucky today... Someone from the Electric Ops of
> the local Power Company was at my house to check out some locates, (I am
> switching to gas), and I mentioned the noise...
> He got very interested, and pulled out something I have never seen...
> It is a long hand held blue unit, maybe 4 feet long, and 7 inches wide, with
> a LCD display on one end, and some sort of sensor on the other...
> In any case, he grabbed that, and we ventured up to the suspect
> transformer... It was in quiet mode, (only S9 at my place, not 15 over like
> each evening, and morning), so I expected to see no real result...
> To my surprise he listened to it on his unit, (which pegged), and said that
> he suspects a loose ground, and wow this is not right! He also said he
> would pass on my noise graphs to the Electric Ops folks so they can actually
> fix it before it fails, and for me to expect a call Monday!
> WOW... I may have gotten rid of my noise of two years finally!!!!!
> More Monday...
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