[TowerTalk] Cable TV hardline question (oops)

[Pete Smith]

I inadvertently calculated the losses for a fairly badly off-resonance 
antenna.  With a 50-ohm 432 MHz antenna at resonance, 300 feet of 1/2 inch 
hardline yields 5.966 dB of loss, of which .167 dB is due to the mismatch; 
with 100 feet, the numbers are 2.040 and .107.

73, Pete N4ZR

At 07:54 AM 10/29/2004, David Robbins K1TTT wrote:

> > you van use catv cable on your antennes buth you have to make 1/4 wave
> > transformer
> > from 60-62ohms coax to the antenna.
>
>No you don't.  I use 75 ohm here for 160m through 70cm with runs up to
>350' with no transformers and no problems on any band.
>
>
>David Robbins K1TTT
>e-mail: mailto:k1ttt at arrl.net
>web: http://www.k1ttt.net
>AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
>
>
>_______________________________________________
>
>See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless 
>Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with 
>any questions and ask for Sherman, W2FLA.
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk

_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless 
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any 
questions and ask for Sherman, W2FLA.

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73, Pete N4ZR
The World HF Contest Station Database
was updated 20 Oct 2004
2796 contest stations at
www.pvrc.org/WCSD/WCSDsearch.htm