[TowerTalk] Coax, solid center

[Jan Erik Holm]

RG217 is good for rotor loops, rated about 1000W at 144 MHz,
much much more on HF. You can get both N and DIN 7/16 connectors
for it, PL259 (solder type) connectors can also be fitted.

73 Jim SM2EKM
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K7LXC at aol.com wrote:
> In a message dated 3/1/04 4:35:34 AM Pacific Standard Time, 
> Kingsautomotive1 at alltel.net writes:
> 
> 
>>    I am installing a beam or two, and have only coax with solid center.
>> (Belden 9913, etc.) Has any one used this successfully for the flexing 
> 
> part?
> 
>> Maybe a large, carefully supported loop? I have heard of using 1/2 "
>> corrugated hardline, so maybe it can hold up without breaking where the 
> 
> mast
> 
>> rotates. I would like to hear of anyone's experience here.
> 
> 
>     No one recommends using 9913 or any solid centered coax where it has to 
> move occasionally; i.e. rotation loop. Besides the center conductor moving 
> around inside the air dielectric, the solid center conductor will work eventually 
> work harden and crack - bad news for any feedline. Terminate the 9913 at the 
> top of the tower and use any old stranded center conductor coax to the beam.
> 
> Cheers,
> Steve     K7LXC
> TOWER TECH 
>