I was having problems recording to VCR as I normally did.
For sake of example, Channel 9 (PBS channel).
1. I had the regular antenna going into the Zenith DTT900
From Antenna (RF) Input jack.
2. And RF cable going from Zenith
TO TV (RF) jack going into the VCR
IN from Antenna (RF) jack of my Sony VCR.
Problem: I normally change channels using the VCR front panel display. I had Channel 9 displayed on VCR.
When I recorded, all I got was black snow and wavy lines and could barely make out images. I freaked and thought this couldn't be the Government getting involved in copy protection! AAAAUUUUGHH!
Fix: Change VCR front display to Channel 3. Use the Zenith DDTT900 remote to change to Channel 9 using TV screen to see the channel. Records fine. The Zenith has taken over your television set, no longer is the VCR in control, you have reached the Outer Limits ... doot do doot doo ..
Also I was freaked out when all I saw was a blue screen. Clicked the TV/VCR button on VCR remote to change it to VCR viewing. I won't mention my first problem with the blue screen -- I did not have the cable connected to VCR ...