[RFI] birdies on 160 and 80
jim at audiosystemsgroup.com
Mon Dec 12 14:47:48 EST 2016
Check out my tutorial on chasing and killing RX noise, and also the
slides for a talk I did at Pacificon this fall. Both are on my
73, Jim K9YC
On Mon,12/12/2016 11:36 AM, Stephen wrote:
> GA, Guys:
> On 160 I have been hearing a noticeable birdie appearing on 1809,
> 1844, 1878 every 35 khz.
> On 80 I am hearing birdies on 3516, 3551, 3585 and up every 35kHz.
> on 160 and 80
> Is appears on and cannot be nulled out with a pixel tech loop.
> It appears on both receiving pennant antennas: one NE and one W
> It does not appear on my transmitting antenna which is a 1/4 wave on
> 80 (direct feed)
> and 1/8 wave on 160 (bottom loaded). The transmit antenna is located
> on the end of a 150 foot long
> pier over salt water.
> The birdies do NOT appear on the other bands from 7-28 Mhz.
> Any ideas out there. I have quite a few of my feed lines and other
> interconnecting wires that are choked
> with #31. I do not have a choke on the 160-80 meter antenna. I do have
> the pennants and loop choked.
> Anyone have any ideas?
> Steve AA4V
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> RFI at contesting.com
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