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Antenna / coax question

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06-08-2010, 07:58 PM
DougZ
Antenna / coax question
I got my new Winegard antenna and amplifier for my TT. I also got a new digital television to go with it. I hooked it up and - NOTHING! I got my VOM out to check the antenna coax. I took a long wire and clipped it to the center wire and ran it to where the cable comes out by the TV. I had continuity. I then checked the shield using the same method. Continuity again. I then checked with the VOM on the inside cable and the shield. Infinity. No leaks. I checked the cable ends and they looked good. It should work??? I then took some coax and bypassed the TT's cable and hooked the antenna directly to the amplifier box. I was amazed. The TV found 39 channels! They were crystal clear too. So my question is, why wouldn't it work with the original TT cable?



W4JDZ
06-08-2010, 10:11 PM
lenny and judy
change positions of the cables


lenny and judy
32', Regency, Cummins 8.3L, Spartan Chassis, 1992
Tag# 9112 0158 32RS 1B
06-08-2010, 10:24 PM
Rusty
Electrical continuity on RF cables isn't the key. RF signals basically travel on the outside of the center conductor. A break in shielding or the insulator can change the capacitance or kill the signal.


Rusty


MilSpec AMG 6.5L TD 230HP; built-to-order by Peninsular Engines:  Hi-pop injectors, gear-driven camshaft, non-waste-gated, high-output turbo, 18:1 pistons.  Fuel economy increased by 15-20%, power, WOW!"StaRV II"

'94 28' Breakaway: MilSpec AMG 6.5L TD 230HP

Nelson and Chester, not-spoiled Golden Retrievers

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06-09-2010, 06:59 AM
DougZ
I guess the only logical thing to do is to try to fish new coax through the roof. Yuck! After seeing how weird this stick and staples trailer is built, I can't imagine what kind of a job that will be. Frowner



W4JDZ
06-09-2010, 10:36 PM
lenny and judy
you haver to run it inside or on the roof


lenny and judy
32', Regency, Cummins 8.3L, Spartan Chassis, 1992
Tag# 9112 0158 32RS 1B