Topband: A 160m Noise problem
art at nk8x.net
Sat Mar 12 15:24:32 EST 2016
I am trying to track down a similar issue. Some of it may be the neighbor's
plasma TV, but I also suspect DSL or Cable TV leakage. I have wandered
around with an FT-817 with a bcb loopstick antenna. No luck so far. My
noise has peaks in the 1823-1829 range. And, yes I hear it on both the 4sq
and the bog in the NE direction. Fortunately it isn't terribly strong.
GL de NK8X
On Sat, Mar 12, 2016 at 3:04 PM, Ed Stallman <ed.n5dg at gmail.com> wrote:
> Hello Topbanders
> I would like to explain my noise issue to get opinions on search and
> 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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