Testing an Antenna Cable using a Multimeter

[@chrissewell1608]

Makes total sense! And if you have continuity between the center pin, and the shielding, then you have a short!

[@Erated78]

Helpful video thank you! I’ve done the continuity test on antenna and all tested good so have to now continue investigating - cheers

[@AareffSystems]

Glad it helped

[@user-3F3G]

(Thank you Valuable information) I need help from you I have a 3G and 4G antenna, how do I know that it receives a signal from the tower? Is there a device that does this or via a multimeter?🙏

[@peterhatton6951]

I think it is also a good idea, when doing continuity, that you move the cable around and check along the cable's length there's no break inside too 👍

[@AareffSystems]

Great suggestion

[@daleo1133]

Is 2 ohmsacceptable for testing the copper pins at both ends ?

[@AareffSystems]

Yes, 1 to 2 ohms is typical and normal

[@Volatile127]

What happens if the shielding is separated from the connector, like it was bent too many times where the connector and the cable meet? I assume that means the cable's not gonna work?

[@AareffSystems]

Yes, you assume absolutely correctly! Cables carrying radio signals cannot be treated like AC cables where twisted and taped long wires will work, for radio No!!, not even on a temporary basis. Radio signals need rock solid connections that never move and as short or small as possible. Remember, AC (50/60Hz) and DC use the entire cross section of the cable to carry the current, whereas Radio signals only the current travels on the surface of the cable, not in the cross section. So the visible connection you can see on the outer if the cable is the only place the connection of a radio signal is actually taking place and this is why the connection needs to be super good and solid for radio.

[@sihemsoso1883]

Comment on a connu le cable est ok ou non ?

[@detodounchintv]

Hi I tried to contact with that number and I got no response your guy's still in business?

[@AareffSystems]

Hi there, yes, we are in business, absolutely mown out with jobs. You should get a response on that number if you call it between 9 and 5 EST/NY time. It's WS also, just send a message. Our email is reliable, [e-mail]

[@detodounchintv]

@@AareffSystems Gracias por responder, ya le envie un email y espero su repuesta gracias.

[@TerryWysocki]

You shouldn't be touching the probes or connections when testing. Current of the meter can flow through your body and affect the resistance readings.

[@AareffSystems]

That only happens if you are using the meter at a range of typically 1K or above. These readings are close to zero ohms and in this range touching the leads and the current passing through the fingers and body is unmeasurable and will not affect the readings. Try it yourself, get a 10 ohm resistor, measure it on a meter, check the result, with and without the fingers touching and you will see there is absolutely no difference.

[@chrissewell1608]

😬

[@threeMetreJim]

If you want to do it properly, with an already installed, but faulty cable, then a TDR is your friend.

[@AareffSystems]

Absolutely TDR is better, but that requires more expensive test meters. This video is intended to show how any cable where you have easy access to both ends can be tested, with 100% accuracy, using a cheap 5 dollar multimeter.

[@ernesthiggs7677]

Can't see what your doing because the words of instruction are in the way.