[RFI] UVerse WAP VEN501-AT Interference
clark.macaulay at gmail.com
Wed Jan 27 12:16:30 EST 2016
Ed, you nailed it for me. I have the same STB as you. I found that
disconnecting the CAT5 cable from the modem to the WAP and STB removed the
noise. Put a choke toroid of 5T on the cable--no change. I think it's
time to replace the STBs with CAT5 versions. Seems strange that the boxes
and/or WAP, being FCC approved, would emit the stuff.
On Tue, Jan 26, 2016 at 9:07 PM, Clark Macaulay <clark.macaulay at gmail.com>
> A few months ago, I had the uVerse equipment changed to a new modem and
> two new wireless TV boxes that interface with the subject unit. They also
> replaced the aging coax cable with CAT5 cable to the new modem which drives
> the TV set top boxes. Immediately I noticed that my transmitting no
> longer caused the uVerse equipment into reset. My bride could watch the TV
> while I pursued my hobby with no interference to the TV. Goodness.
> In the last two weeks while chasing VP8STI, my panadapter, which I had not
> used since the new equipment was installed, showed single frequency
> interference on many bands and in many places on the band. They appear to
> be like spurs. On 20m, the spacing was about 14000 Mhz, 14030, 140060,
> 14090. There is something similar on the higher bands. I could see nothing
> on 40m and only one spur on 30m at 10115. Signal level is at S5. It is
> not a noise hump like a wall wart.
> Investigation points to the above WAP unit in that when it is unplugged,
> the signals disappear. I have put a toroid core on the power lead to the
> WAP with no effect. Equipment here is a K3 with LP-PAN2 and I can provide
> pictures if that would help. I have confirmed the signal using another rig
> that is battery powered with the shack power supply and shack computer OFF.
> Before I try to explain to the good folk at ATT what RFI is,I'm wondering
> if anyone else has experienced something like this. I've googled the
> VEN501-AT and while there is a lot of chatter about it, I've not found
> anyone having RFI problems like I have.
> Is there something in my station that could be causing the problem? I've
> run out of ideas.
> Clark WU4B
> QRPARCI #10815
> SKCC #3892
> Southeastern DX Club <http://www.sedxc.org>
> North Georgia QRP Club <http://www.nogaqrp.org>
> Kennehoochee Amateur Radio Club <http://www.w4bti.org>
> *"It is vain to do with more what can be done with less."*
> *Attributed to *William of Occam (1288 AD - 1348 AD)
Southeastern DX Club <http://www.sedxc.org>
North Georgia QRP Club <http://www.nogaqrp.org>
Kennehoochee Amateur Radio Club <http://www.w4bti.org>
*"It is vain to do with more what can be done with less."*
*Attributed to *William of Occam (1288 AD - 1348 AD)
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