Cable TV Scanning

One possible issue is the ANT/Cable setting. SOME channels (IE 3) are common to both. Some are not .

Channels 2-13 are VHF frequencies and channels 14 and higher are UHF frequencies. It may be that TV is filtering out, or cannot receive, the VHF frequencies. Could also be a menu selection.

To compound the problem, the displayed channel is not necessarily the actual transmitted channel.

1995brave wrote:
I use Channel Vision splitters. P/N HS-2 for two way. They are 5Mhz to 1Ghz all ports DC passing.

MEH.

That is nothing more than another PASSIVE splitter.

HERE



There is nothing "special" or "better" with that brand.

It has the SAME loss as any other PASSIVE 2 way splitter..

"Insertion loss: = 3.5dB
Max insertion loss @ 1GHz = 4.5dB"

EVERY "PASSIVE" splitter uses nothing more than RESISTORS inside. 2Way passive splitters use 75 ohm resistors, a 3way with use 75 ohm on one port and another 75 ohm resistor feeds two more 75 ohm resistors for the second and third port.

Unless it is a specialty splitter designed to block DC they will all pass DC.

for the record, 3DB IS HALF the signal so 3.5 DB loss per port is MORE THAN HALF of your signal lost..

For the OP, there is a good chance that you may have a 3Way splitter, with those one port may have 3.5DB loss and the other two will have 7DB loss.. Your back TV may be on that 7DB loss..

However, typically when on cable, there is PLENTY of signal typically to get over that loss.

The only way to diagnose is to bypass the RV wiring temporarily by running a coax directly from the park connection to your back TV and retrying the scan..

If it works then you have a signal loss issue, that could be in your RV or it could be the campgrounds.. In most campgrounds they feed the cable hookup via multiport splitters, you could have a bad splitter on the park side of things.. I have run into this.

To check that connect your RV to a different campsite port and see if that helps..

If a different campsite hookup works better than have the campground replace their splitter at your site.

If it doesn't help, then you may need to find your splitter to see if you have a three way in there..

I use Channel Vision splitters. P/N HS-2 for two way. They are 5Mhz to 1Ghz all ports DC passing.

If you can find the splitters then just bypass them as a test.

OK... CA, I will try the test. I assume the barrel connector is just a standard connector I used to add length to go from the park pedestal thru the front door to the BR TV. I assume this will work, and will re scan, but the TV will probably not keep the scan and keep the channels.
If the OTA splitter is not compatible, if I can dig thru the massive spider web of wire & cable and hydraulic lines & piping behind the wall behind where all this comes in and can find the OTA splitter do you know what kind of splitter I need to get to replace the OTA???
Thanks for your help....

The RV uses OTA splitters which are not compatible with park cable or possibly the coax is not compatible as a guess.

For a test run temp coax from the LR TV using a barrel connector to the BR TV.