OTA Interference issues / HDHomeRun support not helpful

I can use the Philo app to watch many channels Live, and can start an in progress show or movie, from the beginning, cause, ya know, the cloud!

Yeah I remember reading about this in the other thread now.
I am not familiar with the Quadro - can you roll back the firmware in that model?
I can do that with all of mine except the primes - at least I could, haven't tried in awhile.

Is there any commonality between the interfering devices and your tuner or network hardware? Location, electrical circut(s) anything like that?
Odd that it just began and wasn't always an issue.

Good old SageTV! Still has a lot of features not found in any DVR not using WMC.

I don't know of anyway to downgrade S.D devices firmware.
I did see, browsing SD forms, many folks asking for the ability to or how to. never saw a way to do it.
I do recall when i had a prime, it was not possible due to Cable Lab certifications or something.

The Connect Quadro is the same as the Connect Duo, just has 4 tuners instead of 2.
I have not use any other S.D hardware, other than the Prime, and that was years ago.

I have limited circuits, medium sized apartment unit i am in.
Tried the offending devices, all of which have a electric motor, or speed switch thing in them, on a different circuit, even out in the public hallway outlet outside my unit.
No change.

i have tried devices that I would think would cause more issues, like vacuums, commercial grade DC fan, portable AC unit, high watt, CB/Ham radio on transmit....nothing. Don't cause any issues.

But, when i toggle on, and change the speed of most of my fans, that i have had for many years, some less than 1yr, Lasko Cyclone, Vornado personal desktop fan, they glitch out the tv signal. Flip my bathroom vent fan on and off, glitch.

The "magic wand" massager i have, 2 of them, one will always badly glitch out the signal, if it is on, and hold it and it cord horizontal, the other one, seems less powerful a motor, and still causes glitches, but much less an effect.

The neighbor below me, has some foot massager thing, that when that is on, glitches out certain channels for me.

I tested the RG6 coax from the antenna with a semi cheap tester and it said it was good. tired changing it to a much smaller cable and move the hdhr closer to it....just in case the 30foot some cable run, that does pass by power cords and such, was acting like an antenna, nope. no change.

I can only guess the antenna is sensitive enough to pick up the interference.
No idea why it only now is an issue, when it hasn't been up to now.

I read back over your post in the glitch thread.
Just a thought as a test - Have you tried removing the surge protector(s) and UPS from the equation?

yup. both the idea of plug in the HDHR direct into the wall outlet, and/or the offending electric devices.

But that just now gave me the idea to try and further isolate things.
I unplugged the UPS, so that all my equipment was running on its battery power.
Ran test, the fan and massager are plugged into the normal place they are, across the room different outlet on a surge strip, no change. Plugged the massager and fan in outlet in other room, still no change.
Put power back to ups.

I took the wand massager, and the small Vornado fan, and plugged them into a spare ups and ran them on it battery.
The wand massager did NOT affect the signal, but the fan switch still did, while flipping its speed switch.
I even used a car battery and an inverter and hooked those 2 devices up and did test again, same results, massager no longer glitches signal, but fan toggle switch does.

So, there is for sure some sort of transmission coming from the fans when u toggle the switch, not a power feedback in the power lines. for the fans.

Not really sure what to make of the massager based devices, this test seems to indicate that they are doing some sort of power line noise feedback.
But then why would it still affect the antenna and tuner when those devices are isolated on a UPS battery power supply, removed from the AC line, but not when the massage itself is on its own isolated battery to AC power supply?

Do the fans have metal or plastic blades?

plastic

I do have one Master Force High Velocity all metal floor fan, that does not cause any issues.

Have you tried grounding your antenna coax with a coax grounding block? https://www.amazon.com/iMBAPrice-Single-2-5GHz-F-Pin-Grounding/dp/B01D8ZOJT6

If the coax shield isn't grounded, it acts like an antenna itself to pick up any EMI present.

The HDHR isn't grounded because it's powered by a 2 pronged wall wart transformer.

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Where could i ground it to? Stick a wire into the 3rd prong of an outlet??

All I have is drywall.
I do have baseboard radiator style heat vent, hot water pipe thing...below the window, has a metal frame and such stuck on it, but no idea if that is grounded or just floating there.

Also, none of the antennas by Mohu come with such a thing, i would think that most indoor antennas would not.

Also, the cable is QS Quad Shield model, so, it should not have an issue getting EMi through its jacket.

Where is the best place to ground the cable, closest to antenna, or end of the run nearest the tuner? Or anywhere in-between?

My external, roof mounted antenna has it's coax ground block installed at the service entry point to my house and is grounded through the same metal rod driven into the ground that my electrical and cable TV are grounded to.

I would think anywhere along the coax line would work.

Ground it to a metal grounding rod driven into the earth, a cold water pipe (metal, not PVC), an adapter that plugs into your AC wall outlet and offers an attachment to the round ground plug.

a few examples
https://www.amazon.com/Cable-Matters-Polarized-Grounding-Adapter/dp/B01M0FXMFK
https://www.homedepot.com/p/GE-Heavy-Duty-Grounding-Plug-52146/203747271
https://www.amazon.com/3-Prong-5-15P-Straight-Rewirable-Connector/dp/B07R8FMBWB


https://www.amazon.com/Pinfox-Universal-Appliance-Replacement-Pigtail/dp/B06XRKMYKR

Well, some of those items are 3 wire power cord end plugs.
None of the electrical devices that cause the issue are 3 wire, but normal 2 wire flat cords, so sticking one of those on to them would not do anything i would think.

About grounding the coax cable, what about the Coax protection ports on a UPS or surge strip? do those ground the connection through the ups 3 prong cable and internals?

That was my point.
You asked how to ground the coax grounding block.

I don't know. Perhaps the documentation for what you have will tell you.

Would think using that ac cable and connecting the ground wire to the coax grounding block would work.
https://www.amazon.com/Pinfox-Universal-Appliance-Replacement-Pigtail/dp/B06XRKMYKR?tag=channels04-20

I tried connecting the coax to the ups, then to the tuner...and it cut all channels signal strength in half or more. And fully blocked some channels.

I will have to se about trying the grounding block and a power cable...I had of of those ground block somewhere already have those ends and cables from other projects...

I also wonder, if it is worth replacing/upgrading the Channel Master LTE filter I have.
I see on their website that they have a LTE/5G one now.
BUT, its labeled as the same model number as the one i have, CM-3201.

Also, discrepancy on their website on the product image vs the product specs listed below the image.
Image says: Pass: 5 - 608mhz Block: 609 - 3000mhz
Spec page says: Pass: 5 - 609mhz Block: 610 - 2000 MHz

The non 5G one i have has printed on it:
Pass: 5 - 599mhz Block: 600 - 2000mhz

EDIT: So i emailed Channel Master about that issue.
Decided to order the new 5g LTE filter also their High Pass filter, see if either of those, or both helps my issues at all.

I just bought this fan. It's not causing me any issues.

very well could be frequency-dependent (i.e. which channels are glitchy). My "USB Fan" issue only impacted VHF10, nothing else.

Maybe try RG11?

Can't hurt, but my fan issue persisted through RG6 quad shield everywhere. i don't think RG11 provides much more EMI protection, more physical protection, but i might be wrong there.

This?
https://www.amazon.com/Vornado-Pivot-Personal-Circulator-White/dp/B01N6WXTBH/ref=asc_df_B01JIRI8MC

FYI... In the USA (not familiar with electrical code elsewhere), the screws that attach the cover plates to switches, outlets, etc. are grounded (assuming the outlet, etc. itself is grounded). So if you're looking for a place to attach a ground wire that's a pretty safe thing to try.

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