[ADTech]

That's an interesting observation. KRCW operates the channel 5 transmitter as a translator for their main UHF channel. If both signals are received, the tuner is *supposed* to manage the duplicate virtual channel numbers.

Here's a test to see if the situation can be isolated on the 40" Samsung. It takes advantage of my general experience in having noticed that many Samsung sets have a "direct channel access" mode. If your set has it, it may be helpful.

1. Disconnect the coax.
2. Run a full channel scan. This should erase all channels. Verify.
3. Reconnect the coax.
4. Using the remote, enter channel 33.
5. If the feature is available, the tuner will go to RF 33, find a digital station there, decode it and add virtual channel 32.1-.3 to the channel list.
6. Watch channel and see if the previous symptoms are present. Note results.
7. Repeat steps 1-6 substituting "05" or just "5" in place of 33.
8. Repeat steps 4 & 5 to ADD the RF 33 feed back into the mix.
9. See if it's working or not.

If you find that it works well when either RF channel is tuned in but not when both are in memory, the most expedient corrective action would be to put several HLSJ filters in cascade before the amp to remove all signals below channel 7. Three of them should be plenty.

Let us know how the testing goes.