F1 from Bahrain this weekend

 I been watching bits of F1 GP Practice Sessions on Foxtel this weekend, as the F1 season starts for 2023  with Foxtel's feed coming from Sky Sports UK, I just love the technical bits which they cover in detail during practice sessions, like they do with the MotoGP events. Anyway, the technical stuff I like is when they talk about motors and electronics and aerodynamics is fantastic. Plus there is a segment called Ted's Notebook, where Ted wanders around the  F1 Team buildings,  very casual, with cameraman in tow,  showing all the behind the scenes of the F1 team areas and customer display areas, absolutely fascinating, with Ted providing commentary on team  details and news, I think it's just one of the best pieces of TV I have seen, none of BS "reality" crap on 90% of TV programming, I like Ted's Notebook as it so casual and real and highly informative and shows another perspective apart from just the actual racing.. Thanks Ted I really like your segment.

And of course, good luck to Mick's son Jack Doohan in F2 this weekend

RFI from Foxtel IQ2 STB's on 10m & 6m bands

I noticed hearing modulated signals across 29 MHz band and 52-53 MHz bands when scanning the FM segments from time to time, not clean carriers but data  modulated carriers appearing then disappearing.  By accident, I just happening to hear this occurring one day and by chance doors were open in the house where I could see through doorways to the TV set where the XYL was flicking through Foxtel channels.  OMG, the modulation on the signal varying as channels are being changed, here was the culprit, our Foxtel IQ2 STB (set-top-box).

I got out the Uniden handheld scanner and did some sniffing around the  STB, but no, it seems to be radiating from the LED flat panel TV,  turned power off to the TV but noise still radiating, unplug power cable from TV and noise still there, unplug HDMI cable to Foxtel STB, then RFI signal drops off drastically.

Sniff closer to Foxtel box, very strong signal from the ethernet RJ45 cable and the HDMI cable.  Remove both cables and noise almost non-existant.  sniff the power cord at the rear of Foxtel STB and noise still very low,  plugin the HDMI and ethernet cables one at a time, pretty equally as strong.
I noticed it detected noise on 2m band too, but much lower levels than that of 10m and 6m bands.

Outcome, the Foxtel box itself not radiating but very bad when HDMI cable plugged into a LED flat panel TV, as it using the TV as a RFI antenna.  As a secondary source of RFI it using the Ethernet RJ45 cable as a nice antenna too. I think from memory the IQ2 box made by Pace.

Solution, grabbed my box of various  sized ferrite clipon cores, added 7mm ID and 9mm ID cores on the power, RJ-45 and HDMI cables, closest to the rear of the Foxtel IQ2 box, this suppressed the RFI  sufficiently, in terms of 10m and 6m bands, could now only receive RFI up to about 1 metre from the STB, whereas my  transceiver antenna could hear it from 20 metres away.   I also tried clamping some ferrite cores over the two coax leads running to the satellite dish LNA but that made absolutely no difference, so RFI not radiating back out via coaxes, that I could see.