----- Original Message ----- From: "Prathap Kumar" vu2pop@gmail.com To: amsat-bb@amsat.org Sent: Tuesday, March 18, 2008 9:34 AM Subject: [amsat-bb] Coax run on the Beams

Hi All I have a question regarding the coax run on the boom or cross arm

supporting

the Vhf and Uhf beams. All these years I was feeding the coax to the beams running it backwards

and

allowing it to drop behind the relector downward as suggested, that it

does

not affect the performance.

But most pictures I see these days have the coax being run forward towards the centre and supported on the crossarm and brought downward to the AZEL rotor. Now does these different coax runs have any effect on the performance forward gain or radiation pattern ?

Just a few days ago I had a tough time on the new tower lifting the 2

beams

with coax weight at the back and placing it on the rotator. Hence if it does not matter much I plan to change the coax run towards the centre and bring to the crossarm holding the V and U cross yagis.

Looking forward to your valuable suggestions and knowledge. Best 73 Pop VU2POP

Hi Pop, VU2POP

Read please the following recommendations:

http://www.g6lvb.com/fibermetalboom.htm

73" de

i8CVS Domenico