I live in Marysville. I recieved KTWB on 22.1 about a week and a half ago. Then picture disappeared this week. I reprogrammed and got 22.1 and a new 22.2 and 13.2. However, sound only on 22.1 and 22.2 (KTWB and KCPQ respectively). KCPQ was still broadcasting a strong 95-97 signal on 13.1. However, nothing was on 13.2.
I contacted KTWB yesterday and informed them of the reception problem on my Sony SAT HD-100. The technician was very responsive (got a response within minutes of my e-mail) He said that it was likely an issue with the PID codes and metadata lookup tables on their end. He was attempting to fix it when an exciter modulator failed (which appeared on my end as not being able to program (or map) the channel even though it was showing a signal strength of 80-82.
He got the exciter working again -- and I was able once again map 22.1 and 22.2 with sound only. He said he would work on the PID issue. This seems to be a problem unique to the Sony (and I'm told RCA) recievers. I recall last year having problem with strong signal but no picture-sound from KING until I informed them of the problem and they tweaked their signal. Until then, at Magnolia HIFI I was able to tune a Mitsubishi box to KING 5.1 just fine but the SONY box showed nothing on the same channel.
BTW, I'm not recieving any signal from KONG. Must be too weak in Marysville. If OTA Digital is to be viable, these stations are going to have to boost their signal to the level put out by KCPQ. People will not stand for the picture drop outs every time a plane flys by or a car with a leaky ignition system drives by. As it is, I often have to set up my remote control to quickly switch to the analog channel if the digital signal starts to break up. What will happen when their are no analog channels?