[Antennas] Hardline Questions

Tue, 28 Oct 2003 11:24:23 -0500

Tim,

It will work, however, it is likely to be 75 ohm and it can never go below a
1.5:1 swr due to the mismatch.
----- Original Message ----- 
From: "Tim Holmes" <[email protected]>
To: <[email protected]>
Sent: Monday, October 27, 2003 7:06 PM
Subject: [Antennas] Hardline Questions


> Hi Guys, Got a few questions related to hardline for you.
>
> The other day (month) I happened into about 100 feet of 3/8 in hardline.
> It was abandoned in place by our local Cable TV company when they
> replaced it with larger (1/2 inch Heliax).  It appears to have an air
> dielectric, at least there is no foam or plastic in there and there are
> spacers every so far down the length.  Being cable TV stuff, I assume
> that it is 75 ohm, but I am not sure.
>
> I want to use it for my VHF and UHF setups, and so come the questions
>
> 1. Since it is Cable tv stuff, Can I use it?
> 2. How do I resolve the impedance mis-match?
> 3. Connectors?
> 4. is it ok to make smooth radius curves in the stuff (Transitioning
> from horizontal to vertical going up the tower)?
> 5. Anything else I need to know?
>
> Thanks
>
> TIM
> W8TAH
> Amateur Extra Class Operator
>
>
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