With free to air tv Isn't there supposed to be some sort of resistance between core and shield at the wall socket?
I'm thinking there's a break in the cable that runs through the roof to the antenna. There's a mast head amp on the antenna so surely there should be some kind of reading between core and shield. I get open circuit.... Not even in the millions.... nothing.
I'll check the mast head amp again tomorrow.
I'm thinking there's a break in the cable that runs through the roof to the antenna. There's a mast head amp on the antenna so surely there should be some kind of reading between core and shield. I get open circuit.... Not even in the millions.... nothing.
I'll check the mast head amp again tomorrow.
Normally yes, you would read 'something' but a UHF TV feed can also be AC coupled.
Mast head amps normally get their power via the downlead (coax cable) although the power supply can be anywhere from close to the aerial to being located 10's of meters away.
You haven't really given enough info as to the set up in order to make a judgement call 🙂
Mast head amps normally get their power via the downlead (coax cable) although the power supply can be anywhere from close to the aerial to being located 10's of meters away.
You haven't really given enough info as to the set up in order to make a judgement call 🙂
I guess it depends on where you are measuring, there is a DC feed injector in series with the input to the masthead amplifier. You'll need to find the DC injector and disconnect it then you should be able to see the input of the amplifier. Also there maybe a splitter located somewhere if you have multiple outlets with one of the ports being designated as a power pass port.
If the TV reception has suddenly deteriorated it's quiet possible the DC plug pack has died or somebody unplugged it.
Some basic info here - https://www.digitaltvhelp.com.au/install-signal-amplifier-digital-tv/
If the TV reception has suddenly deteriorated it's quiet possible the DC plug pack has died or somebody unplugged it.
Some basic info here - https://www.digitaltvhelp.com.au/install-signal-amplifier-digital-tv/