Times Microwave has a nifty online calculator for their cable...
http://www.timesmicrowave.com/cgi-bin/calculate.pl
73 Matt
W5LL
----- Original Message -----
From: <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Monday, February 20, 2006 10:00 AM
Subject: Re: [TowerTalk] Feedline
> Bob:
>
> A while back (ca 1995!) W3LPL compiled a table of coax cables vs loss.
> You can find one source here:
> http://www.k1ttt.net/technote/coaxloss.html#tables .
>
> Frank recommended (elsewhere) that coax should be selected to keep the
> loss below 1 dB for the highest freq the coax run will carry. So for 28
> MHz and 200 feet of coax the conventional cable designs (RG-213, -8X and
> 9913) would be too lossy. You'd more or less be forced to go with some
> sort of Andrew cable design such as Superflex (FXA12-50J).
>
> Of course, you could accept greater losses in your coax runs and
> select one of the more common cable designs. These tables will let you
> calculate the loss impact for each design you might consider.
>
> 73 de
> Gene Smar AD3F
>
>
> -------------- Original message ----------------------
> From: [email protected]
>> OK I know this has the potential to open a can of worms, but I'm going to
>> put up
>> a nice tower about 100-200' from the station. I need a good feedline
>> that is
>> low loss and easy to work with. Hardline is not an option.
>>
>> I will be feeding both HF and VHF antennas.
>>
>> Also, I'll be putting in a rotator (Ham IV). Any good rotator cable?
>>
>> THanks all you experts! Appreciate it.
>>
>> Bob/WF3H
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> [email protected]
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> [email protected]
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
[email protected]
http://lists.contesting.com/mailman/listinfo/towertalk
|