This topic has been discussed in many different threads, but I decided to start a new one because I'm taking a different track in trying to solve the problem.
In my area of southeastern VA, we have one DT-OTA station that has been giving reception problems to many people with different OTA receivers and including myself when using the 622. I also have a ATSC tuner in a Mits LCD, which does not have any problem in handling the signal from this station.
The 622 image is pixelated, sound is garbled and frequently, the "Loss of OTA Signal" error message pops up on the screen. Other threads gave me a clue about padding down the signal to eliminate this problem, so I inserted a switchable attenuator in-line to the 622 and found I had to insert 21 dB of attenuation before the problem disappeared, but then my weaker stations were flaky. This requires changing the attenuation when switching channels, not a great situation for unattended recordings.
I know some people have deduced this problem is caused my multipath errors or signal overload, but in my case, analog stations on either side of the DT station show no signs of multipath errors and in fact one of them is delivered from the same tower as the problem DT station. Also, the problem station is not the strongest in the area.
I'm thinking that this problem is not really connected to "loss of signal" rather caused by "loss of sync." Also, the problem isn't caused by multipath errors, but with some other signal condition that affects the 622 and not other tuners.
I'm hoping there will be some person on this list that might shed some light on what other signal conditions might cause this problem where inserting attenuation pads takes care of the situation. Something along the lines of signal non-linearities such as spikes?
In my area of southeastern VA, we have one DT-OTA station that has been giving reception problems to many people with different OTA receivers and including myself when using the 622. I also have a ATSC tuner in a Mits LCD, which does not have any problem in handling the signal from this station.
The 622 image is pixelated, sound is garbled and frequently, the "Loss of OTA Signal" error message pops up on the screen. Other threads gave me a clue about padding down the signal to eliminate this problem, so I inserted a switchable attenuator in-line to the 622 and found I had to insert 21 dB of attenuation before the problem disappeared, but then my weaker stations were flaky. This requires changing the attenuation when switching channels, not a great situation for unattended recordings.
I know some people have deduced this problem is caused my multipath errors or signal overload, but in my case, analog stations on either side of the DT station show no signs of multipath errors and in fact one of them is delivered from the same tower as the problem DT station. Also, the problem station is not the strongest in the area.
I'm thinking that this problem is not really connected to "loss of signal" rather caused by "loss of sync." Also, the problem isn't caused by multipath errors, but with some other signal condition that affects the 622 and not other tuners.
I'm hoping there will be some person on this list that might shed some light on what other signal conditions might cause this problem where inserting attenuation pads takes care of the situation. Something along the lines of signal non-linearities such as spikes?