Topband: A 160m Noise problem

Ed Stallman ed.n5dg at
Sat Mar 12 17:47:23 EST 2016

Thanks for  all the reply's

 From the questions I was ask via e-mail , I'm thinking what I have may 
be power line noise ! The power Co. is scheduled  to repair the pole in 
question but the repair doesn't happen as fast as when the meter stops 
turning .
What has me puzzled, why the noise is strongest on 160

Thanks everyone , Ed N5DG

On 3/12/2016 2:04 PM, Ed Stallman wrote:
> Hello Topbanders
> I would like to explain my noise issue to get opinions on search and 
> Destroy
> This noise is covering the 160m band only, 80m is good ! I'm using a 
> HI-Z receive 4 SQ and the NW direction is as quiet can be . All other 
> directions are noisy with the NE being the worst , SE almost as bad 
> and SW is somewhat OK.   The noise starts at 1780 Khz and rises 
> quickly to its peak at 1820 Khz ! from there the noise levels off to 
> 1880 Khz and slowly drops to nothing at 2070 Khz ! Wish I could post a 
> screen shot of my panadapter for y'all to see, I'll be happy to send 
> JPG file off list !
> I was thinking maybe water in the RG6 and with the Bias T the Hi-Z 
> uses, this may be my problem but disconnecting and testing all the 
> coax  using the 20meg scale ... all checks good ! I may replace the 
> RG6 anyway but thinking of running a beverage at 165 degrees and see 
> if the noise is still there . Was going to run the beverage anyway in 
> hope of hearing Heard Is .
> At first I was thinking power line noise , I checked for noise using a 
> 144Mhz AM receiver and 3 el yagi . I did find some noise to my NE but 
> gone today after the big rain . 160m noise is still with me!
> Now I have parts ordered to build a small 160 loop . With that and my 
> K3 I'll move to different locations and see how that works out .
> Yes I have unplugged everything in the house and no switching supply's 
> that we leave plugged in . With computers off and using VFO I can see 
> the S meter rise and lower sweeping through the 160 band .
> I've ask 2 of my neighbors to disconnect their elec fence with no joy .
> I have to give my pasture a couple of days to dry out , then I'll run 
> the beverage and replace the RG6 on the RX 4 SQ with new flooded coax .
> Oh and I also tried a BCB filter ..
> Any Ideas what could cause the 160 only noise ?
> Thanks Ed N5DG
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