Connecting coaxial to UHF aerial with 3 screws?

AlonzoHarris

I just got a new UHF aerial and there are 3 screws.
This is the aerial: http://www.dwyers.ie/Antiference-Group-A-RX-Yagi-UHF-TV-Aerial/RX12A/

Can anyone advise which pieces of the coaxial cable should go into which of these screws please.

I connected one for my sister before but it had only 2 screws so it was easy to set up, I just put the outer metal wire mesh under 1 screw and the cable from the centre under the other.

I'm not sure what to do here as there are 3 screws, any ideas?

Peter Rhea

Post a photo of the connections.

I had 1 of these myself & there were only 2 connections, as would be expected: 1 to each side of the flat plate dipole. A saddle & clamp would have 3 screws for 2 connections but, I honestly can't remember what was on the RX12 I had.

AlonzoHarris

Peter Rhea wrote: »

Post a photo of the connections.

I had 1 of these myself & there were only 2 connections, as would be expected: 1 to each side of the flat plate dipole. A saddle & clamp would have 3 screws for 2 connections but, I honestly can't remember what was on the RX12 I had.

Thx a lot.

Doing this from a phone so hope it works.

Peter Rhea

Yes, it's the same as my own RX12, that I found I still have, with some cable attached. My pic isn't great but you should be able to see the centre conductor clamped under the single screw. The cable braid is pushed back over the outer insulation & the whole thing clamped on the 'saddle & clamp' part.

AlonzoHarris

Peter Rhea wrote: »

Yes, it's the same as my own RX12, that I found I still have, with some cable attached. My pic isn't great but you should be able to see the centre conductor clamped under the single screw. The cable braid is pushed back over the outer insulation & the whole thing clamped on the 'saddle & clamp' part.

Thanks a lot!!
I'll try set it up this evening.

AlonzoHarris

Thanks a lot Peter! Working sweet.


I have 1 more question if anyone knows the answer.
I bought 2 UHF aerials, a cheap one and a dear one.
I just set up the dear one with my downstairs telly.
The aerial is in the attic.
I planned to set up the cheap one with my upstairs telly, but while I was in the attic I thought to myself what if I could use the dear aerial for both Telly's?
Anyone know if that's possible if I got some sort of splitter?

Peter Rhea

I would use a screened splitter with f-connectors, like this one.

The signal from the aerial has to be strong enough to survive splitting & still be usable at the receiver. Otherwise, you would need to add amplification.

gctest50

If the antenna works one TV ok but won't run two using a splitter, put up the second antenna since you have it

Amplifiers boost noise too

Peter Rhea

gctest50 wrote: »

Amplifiers boost noise too

They boost everything input that falls in their passband. That's what you want them to do, to deliver a signal at each output that's at least as strong as the input.

They will add some noise too, from their own electronics.

cork_south

.

AlonzoHarris

Thanks a lot lads, appreciate the help.

It splitting the line could reduce the signal strength I might be better off just trying out the 2nd aerial to see what the quality is like as it only cost me €11.

My next steps are to ring Sky today and cancel, then I will choose which type of box I want upstairs and downstairs as I have been using a relatives box to do the testing last night.

winston_1

AlonzoHarris wrote: »

Thanks a lot lads, appreciate the help.

It splitting the line could reduce the signal strength I might be better off just trying out the 2nd aerial to see what the quality is like as it only cost me €11.

My next steps are to ring Sky today and cancel, then I will choose which type of box I want upstairs and downstairs as I have been using a relatives box to do the testing last night.

Two aerials in the loft are liable to mutually affect each other and reduce the signal strength anyway. Splitting is the best way to go. You only lose around 4dB.

AlonzoHarris

winston_1 wrote: »

Two aerials in the loft are liable to mutually affect each other and reduce the signal strength anyway. Splitting is the best way to go. You only lose around 4dB.

Thx Winston, I'm gonna try both.