I assume you have already done a proper Forum Search for your model number in case other people have already answered your question ?
If so then check out this thread: https://community.sling.com/thread/3300?tstart=0
Come back if it doesn't help.
Yes, I have done a proper forum search, and I have check out the https://community.sling.com/thread/3300?tstart=0
I have looked at:
but nothing to find.
I have tried all other Denver models without success. I tried all other possible brands, but none works. All I am interested in is being able to change channels, but can not find one I can use.