[RFI] 6M fm iNTERFERENCE

[kr7o at vhfdx.com]

Wireless headset.  They started showing up a few years ago in Canada 
through Amazon and maybe Walmart (?) from what I have read.  They are 
powerful enough to propagate via Es and I hear them when the band is open 
to S. TX.  Not sure if they are coming from TX or Mexico.  Another great 
piece of consumer electronic crap.

At 11:19 AM 5/20/2013 -0500, Ed Richardson wrote:

>With 6m Sporadic E season finally underway, I have discovered a new
>interference between 50 and 50.1 MHz. On CW or SSB it sounds like noise
>bursts as the modulation passes through your tuned frequency. It turns
>out to be a wide FM carrier from a TV source. Some sort of RF modulator
>type device, however I can find no video carrier anywhere between 1 and
>900 MHz. The signal is likely part of a satellite or cable box, pvr, or
>receiver as the audio source does change channels. The device does get
>shut down, sort of, as the modulation vanishes leaving only the carrier.
>The carrier is also unstable as it drifts between 50.03 and 50.09. With
>modulation the signal is 100 kHz wide on peaks centered on the carrier
>frequency.
>
>I believe I have tracked it down to one of several homes, a little more
>than 1/4 mile away. At this distance with a 5 element yagi pointed in
>that direction, the signal is s9+20dB on the receiver or -60 dBm
>measured on a R&S spectrum analyzer.
>
>Has anyone found a definite culprit for this type of signal and how do
>you deal with the homeowner that is blanketing the neighborhood
>unintentionally? I do not know any of these potential owners of the
>interfering equipment and I am a little reluctant to knock on the door.
>
>Ed VE4EAR
>
>_______________________________________________
>RFI mailing list
>RFI at contesting.com
>http://lists.contesting.com/mailman/listinfo/rfi

73, Robert KR7O/YB2ARO, DM07ba/OI52ee  (ex.  N7STU)
DXCC  6M #1122
WAZ  6M #112
VUCC  6M, 2M

www.vhfdx.com (KR7O/YB2ARO pages)
Looking for old VHF QSL cards and logbooks.