Quote Originally Posted by adm View Post
A few observations

The centre connector on the left hand side doesn’t look if its fully under the screw. It seems to be jammed between the screw and the wall of the fixing. tried pusing the copper wire down so it touches the screw but dont want to break anything if i force it

Coax cable that is crushed or folded as shown in the photo can behave in strange ways in that some frequencies may be effected and others not. It’s also possible to crush a cable with the use of inappropriate cable clips.noted

Ideally for digital TV and satellite any faceplate should be fully screened. A faceplate as shown on the photos can be the source of local electrical impulse appearing on the signal. noted

However, I’m still not sure why terrestrial TV would be blocked whilst satellite through the same cable and faceplates is OK. For satellite to work there must be a valid DC path to power the LNB and satellite is a much higher frequency than terrestrial TV. yes its very strange

One possibility is that the aerial signal level is marginal at the socket in room 1 but further attenuated by the time that it has gone through the extra cable to room 2 BUT I wouldn’t expect this to be true for a relatively short length of CT100/WF100/RG6 type (or equivalent) cable between rooms unless there is an inappropriate join in the cable along its run. The satellite output will have a higher signal level so the extra attenuation of signal will not matter.its all once cable socket to socket

Is it possible to use one of the TVs in both rooms to compare the signal levels at the two outputs? You have to use the same TV as the tuners will have different sensitivities and the signal level displayed on each TV will be an arbitrary level that cannot be compared between different manufacturers or models. i get all channels i put the tv in room 1 both sat and terestrial, sinal level fromn sat in room 2 is 100% but not for aireal feed as i get if lucky 12 channels only or none

Is the cable run between room 1 and room 2 a continuous length of cable with no intermediate joins? What is the approximate length of the cable? Do you know what type of cable has been used for the run between room1 and room 2?All one cable approx 7-8m

Although a very old article you can generally identify different types of cable …..

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http://www.wrightsaerials.co.uk/articles/coax-cable-quality.shtml
Does the cable between room 1 and 2 run outside of the house? If so have you included a drip loop in the cable just before bringing it through the wall? Water ingress into or to the end of the cable can have unexpected performance results.the cabels are inside and run under trhe floor see post 6 of my diagram

The drip loop is a slack bit of cable that sits lower than the rest. The whole purpose is to let water pile up at the bottom and drip off. If your cables were tight, water from outside could travel down the wire and get straight into an outlet or faceplate.

Are you sure on the TV is room 2 that you are actually scanning for the correct transmitter and or the correct frequencies? For instance I have encountered TVs that have more than one mode of scanning. One mode is where the region is first chosen but unfortunately the info the TV had inbuilt was so far out-of-date that it scaned the wrong frequencies. The other mode had to be used which scanned all terrestrial frequencies.scanned for digital terstrial TV channels only , im shire i selcted london/ crysatl palace. I fi i use indoor aerail it works although ther eis interearance if i walk arounf the room as expected


Although I’m NOT suggesting that you change anything at this stage one easy way of making a fully screened faceplate that just routes the cable through is to fit F plugs to the cables that come through the wall. Drill a blank faceplate to accept F barrel connectors and screw the barrel connectors into the faceplate. all cabels have f conbectors as shown with push fit adatotors where required


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https://www.ebay.co.uk/itm/10-F-Barrel-Connector-Joiner-Coupler-Adaptor-Socket-Sky-Coax-cable-UK-SELLER/123418934233?hash=item1cbc577bd9:g:AzsAAOSwB8Rbvxvd

https://www.screwfix.com/p/1-gang-blanking-plate-white/4104d
Note: if buying F barrel connectors just make sure the seller is including the fixing nuts and washers. These connectors are also used for joining cables so some (many) sellers will not include the nuts and washers. A deeper back box may also be required.
I may have to call somone in to look at the faced plate, but will see if i can push the copper wire down to the screw