[TowerTalk] Rotor loop coax

[Jim]

Oh for Pete's sake Jim!


He asked a simple question. He is referring to cable with RG-213 stamped on
the side of it like he could buy from DX Engineering or ABR enterprises!


He did not ask HOW TO BUILD RG-213 from pieces of small copper wire!

No wonder the information in your papers is so difficult for the average ham
without an engineering to understand.


Really read what I have just sent you above.... Then flame on if you wish.

73
Jim W7RY

 

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Jim
Brown
Sent: Sunday, August 19, 2018 1:16 PM
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Rotor loop coax

On 8/19/2018 10:07 AM, Terry Brown wrote:
> Is RG 213 the best and most flexible coax to use

In general, RG-numbers are not a specification for coax. Rather, they define
little more than the characteristic impedance and approximate physical size.
This has been true for at least 50 years.

The only meaningful way to specify coax is with a reputable manufacturer's
part number and data sheet for it. I agree with others that Davis BuryFlex
is a good choice for this application.

73, Jim K9YC

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