[TVI-RFI-EMI] IRRITATING NOISE ON 17

Ron via TVI-RFI-EMI tvi-rfi-emi at mailman.qth.net
Mon Jul 14 19:34:58 EDT 2014


Hi Bill, I live is a very small town in N Florida. If you have a radio, like an Icom R10, build a 'Cheap Yagi' as described by Kent Brittan. I built several for different frequencies. 6M, 2M and 432. However, I found the best results with one cut for around 120 MHz.
Heck, that's what MFJ uses, so it must be great. Right !?

Use PVC for the boom and you'll have a very light, directional antenna.
But, although the 432 antenna has great gain, the noise intensity drops with frequency. I found the 120 MHz worked for me and was able to identify the offending poles for the local power company.

gud luk

ron
N4UE

 

 

 

-----Original Message-----
From: Bill <bill at billnjudy.com>
To: tvi-rfi List <tvi-rfi-emi at mailman.qth.net>
Sent: Mon, Jul 14, 2014 4:22 pm
Subject: [TVI-RFI-EMI] IRRITATING NOISE ON 17


This started a while ago, 17 was one of my favorite bands but now this 
constant noise is getting irritating.

The noise floor jumps from -120 to -100
Each pulse is 3 to 5 seconds in duration
and they occur approximately every 4 to 5 seconds

no discernible signal mode, just wide band noise making 17 meters really 
annoying. And 17 is the only band I hear it on.

It's far worse when I turn my beam to the NNE or SSW   (obviously I'm 
hearing it off the back of the beam also)
SSW is down a bit so I'm suspecting something to the NNE. No Industrial 
in that direction for many miles, in fact, it's a EXCLUSIVE PRIVATE golf 
course.

Unfortunately NNE is Europe for me and SSW is Pacific. LOL

Rain of shine, makes no difference so I'm doubt it's Com ED on a pole or 
insulator.

This is a densely populated residential area so it's not like I can 
shoot out offending insulators like in the old days.
I tried the walk around with a portable radio and couldn't find anything 
that made the noise level change at all.


-- 

50% of my forefathers were female.
---------------------------
W9OL-Bill H. in Chicagoland

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