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: HELP: gamma match  (Read 1146 times)
DU2YOC
Member

Posts: 17




Ignore
« on: December 27, 2001, 04:42:14 AM »

i'm having a problem with with my yagi antenna because i had a high vswr with the gamma match that i did.what maybe the problem? does someone know how to make a better gamma match or even other types of tuning/matching(that is not too technical) a yagi antenna for 2 meter.tnx
Logged
KU4AB
Member

Posts: 22




Ignore
« Reply #1 on: January 02, 2002, 01:58:32 PM »

check out the ARRL antenna book.. look up gamma match
in the back index.. the formluas are listed to figure
the series capacitance.. distance from driven element,,
and length of gamma match.. i used it to make a new
gamma match when converting a Mosley 27mhz beam that
I salvaged into a fine 6 meter beam.. i even used the capacitor off the 27mhz gamma match just shortened and
got a 1.1 swr at 50.125mhz..  good luck   if you cannot
find the  formulas.. answer in this forum.. i'll put
it in another reply.,,.73's phil  ku4ab
Logged
N4UE
Member

Posts: 300




Ignore
« Reply #2 on: August 21, 2002, 04:05:49 PM »

Hi, last year I reinstalled my Cushcraft 5 el, 6 Meter antenna. I didn't like the Gamma match because of the slewing of the pattern. Go to the Cushcraft website. Download the PDF for the 617 Boomer. There is a nice illustration of the "T" match. It was easy to duplicate with scrap tubing, etc.

GL

ron
N4UE
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!