Hear radio station in background - Anyone else?
awara:
Thanks, Lavarock7. Not sure where to start with the grounding but will poke around to see what's going on. The radio is sporadic but getting more frequent. See attached sample recording which ends with the dreaded white noise when phone is answered. May need to turn up the volume to hear the radio in the background.
Radio + White Noise is painful enough but lately, GV has started to record calls by itself. Really random but really embarrassing to hear the GV alert about call being recorded in the middle of a conversation. If I do not know better, I would speculate that the Obi200 is possessed. Is it just my luck? Or has anyone else experienced this joy? If you did, what helped eliminate it or atleast reduce the issue?
Quote from: Lavarock7 on March 08, 2021, 01:35:52 am
Decades ago I worked in AM radio. A listener was using a reel to reel tape recorder with an un-grounded mike (or aux) wire which picked up the AM signal and it was demodulated.
My bet, something along your chain is un-grounded and is picking up a local AM broadcast tower nearby. I have seen it on regular landline telephone lines.
Radio and television stations in the U.S, identify themselves at various times but always at the top of the hour.
The phone company oftentimes had filters for landline, but if you are not using one, then you have to investigate yourself. When this happens, can you move your hand around each item, OBI, cordless phone, etc to see if the signal increases ort decreases. The item you touch may well be the culprit.
The cure can be something as simple as a ground wire or a capacitor to shunt the signal to ground.
You might look to a local "Ham" amateur radio operator for help (not that it is their fault, but they are great at looking fo this type of thing).
SteveInWA:
Well, have you tried any of the troubleshooting steps already described to you?
As Lavarock7 pointed out, this is AM broadcast radio being picked up by the equipment or wiring you are using. It is not that hard to find the problem.
If you plugged your OBi's Phone port into your house telephone wiring, unplug it, and directly plug in a different, ordinary corded telephone to the back of the OBi. If the interference goes away, your problem is in the house wiring. Unplug that phone, and then plug in whatever other phone you were using, if it was different. Does the interference come back? If so, it's that phone.
If neither of those things helped, and moving the OBi device to a different location doesn't help, then you may have a bad power supply (wall wart) on the OBi.
This power supply works fine, and it has an interference-absorbing toroid attached to the cord:
https://www.amazon.com/Chanzon-Switching-Adapter-100-240V-Transformer/dp/B07HNL5D56
You can also try one of these, or one of the other similar products on the listing page:
https://www.amazon.com/Philmore-Phone-Line-RF-Filter/dp/B004FVGIO2
If you or someone you know has any DSL filters laying around, you can try adding one of those, instead.
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