Chuck was right for sure.
We lost good hdmi air tv and was getting to the point I considered cable.
But had a hunch, turned and unplugged everything in house just like Chuck.
We then had great air tv again but with cell phones and lights off. Back to candles.
Over the next few weeks I'll gradually figure out how much emi is radiated by each device capable of broadband noise (using an IFR spectrum analyzer).
How much the hifi noise floor is raised is unknown.
The led lighting is top on the list as all of our 'bulbs' are now led.
Best regards Mr Chuck.
We lost good hdmi air tv and was getting to the point I considered cable.
But had a hunch, turned and unplugged everything in house just like Chuck.
We then had great air tv again but with cell phones and lights off. Back to candles.
Over the next few weeks I'll gradually figure out how much emi is radiated by each device capable of broadband noise (using an IFR spectrum analyzer).
How much the hifi noise floor is raised is unknown.
The led lighting is top on the list as all of our 'bulbs' are now led.
Best regards Mr Chuck.
Aside from EMI radiation, you might have to ask if an assortment of corded devices oriented just right are trapping the signal. Just saying in case you do not find any devices really radiating much noise at the tv band.
Using trial and error the problem was found to be interference from an external out of band signal.
I ordered an assortment of inline 75 ohm filters , problem gone.
Great reception again.
The best was Channelmaster, the cheap filters did help and are useable.
I have to look around neighborhood see if any new neighborhood cell stations.
We are using an amplifier far out from tv transmitters so any nearby interference is magnified.
Apparently amplified antennas are more sensitive and require a filter(s).
I ordered an assortment of inline 75 ohm filters , problem gone.
Great reception again.
The best was Channelmaster, the cheap filters did help and are useable.
I have to look around neighborhood see if any new neighborhood cell stations.
We are using an amplifier far out from tv transmitters so any nearby interference is magnified.
Apparently amplified antennas are more sensitive and require a filter(s).