[RFI] 6M fm iNTERFERENCE

[Roger (K8RI)]

On 5/20/2013 4:05 PM, kr7o at vhfdx.com wrote:
> 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.

I've been using wireless headsets for over 5 years.  Two that are 
receive only and 1 that is a gaming headset.  They are all in thr GHz range.

So far I've not run into any running lower frequency for computers weth 
most being WiFi

It's apparent that there are some consumer products that are not so 
friendly,

73

Roger (K8RI)
>
> 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
>>
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>
> 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.
>
>
>
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