Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Andrew Heliax Questions  (Read 500 times)
DAPAQ2
Member

Posts: 18


WWW

Ignore
« on: July 15, 2008, 12:37:25 PM »

Group,

Anyone here have experience with the Andrew LDF5 heliax? Also can anyone help educate me on the various connectors they offer for this size cable? I am considering a bulkhead for the wall just like a cable tv jack but unsure as to how this actually works and what it looks like. I cannot find any good photos on Andrews website and none of the local dealers stock any of this stuff to look at and hold in person...

Doug
Logged
WB2WIK
Member

Posts: 20547




Ignore
« Reply #1 on: July 15, 2008, 02:06:00 PM »

I use a lot of it.  LDF5-50A, specifically: This is .875" Heliax, and 50 Ohms nominal impedance.  Other variants are available.

Its data sheet is here:

http://www.dateline.ru/download/datasheets/Andrew_LDF5-50A.pdf

The most common cable end connector is the ordinary Type N, which clamps onto the cable and looks like this:

http://www.tessco.com/products/displayProductInfo.do?sku=457744&eventPage=1

Other connectors are available, too, but they all cost more.

If you want to make a "bulkhead" panel for these, you'd use ordinary, plain-old-vanilla Type N bulkhead adapters, install Type N male connectors on the cable ends, and just screw them in.

WB2WIK/6
Logged
K9KJM
Member

Posts: 2416




Ignore
« Reply #2 on: July 16, 2008, 12:34:52 AM »

I use lots of Andrew LDF5-50A 7/8" Heliax. GREAT stuff!  But IS large and very stiff. Do not expect to screw the connectors to anything but short jumpers made up from something like Times LMR-400 on each end.

Good used connectors usually sell in the $20 dollar each range.
There is a roll of used 7/8" complete with connectors on Ebay right now with a starting bid of only 10 bucks.......

http://cgi.ebay.com/Andrew-LDF5-50A-Heliax-and-accessories_W0QQitemZ190236953230QQihZ009QQcategoryZ48704QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Logged
NH7O
Member

Posts: 126


WWW

Ignore
« Reply #3 on: July 16, 2008, 11:23:28 AM »

I used a few copper plumbing fittings to make an adapter to a PL259. You have to be careful about how you apply heat, but it works.

If you are looking at the Andrews website, then perhaps you aren't concerned about cost. I use a run of the coax in question which was obtained from a cell site install. The techs gave away some roll ends that were too short. I'm a classic cheap ham so I rolled my own splices and connections. Unless you are working at high UHF there is no problem.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!