the coax is called LMR400.
one of the lowest loss 50ohm coax cables for VHF and UHF 
frequencies...though not the lowest loss of course.
hopefully the duplexer and antennas use N connecters as they are also the 
best type of connecters to use at VHF and UHF frequencies to minimize loss.
the "egg beater" antennas look like an egg beater, essentially multiple 
folded dipole style antennas, such as those used for repeaters...they offer 
a wide view of the sky and horizon, and are the next best thing to a 
directional array with elevation and sat tracking rotator.
73
Colin, V A6BKX
----- Original Message ----- 
From: "Walter Hampton" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, March 12, 2010 8:21 AM
Subject: from my viewpoint, this is what you need


> from my viewpoint, this is what you need to work a o 51. you need vhf =
> and uhf eggbeater antennas plus a duplexer you don't need a pre amp to =
> work ao51. this is with the tmv71a radio. please mail gary gross ke6qr =
> for details  pluss you'll need a run of rmh 400 coax for uhf. please =
> mail gary gross to help you with this project. i've had excelent success =
> with my set up. this is for the list  and butch.
>
> i know it's 400 coax. but i'm not sure what the beginner leters letters =
> are for this coax. he can tell you what kind of connectors you need for =
> vhf, and how many.i want this to go right for the list, so please email =
> gary gross ke6qr to help you out. let me know of your successes .
>
> from walter wb6jtj see you on the bird.=20