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

donate to eham
   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Using two tuners with an amplifier  (Read 3042 times)
Guest

« on: March 01, 2002, 12:32:45 PM »

I have heard of hams using two tuners with an amplifier.  One between the rig and the amplifier and the other between the amplifier and the antenna.  What are the opinions on this?   Bill
Logged
W3GEO
Member

Posts: 25




Ignore
« Reply #1 on: March 01, 2002, 12:44:35 PM »

Bill,

In some cases one would use a tuner between the rig and the amp if the input of the amp was, for some reason, not a 50 ohm load. This was not much of a problem with exciters using final tubes and pi network coupling but it bacame a problem with solid state exciters that had foldback SWR protection. The tuner then allowed the solid state exciter to "see" a 50 ohm load and delivered full power into it.

Another reason for this is that a tuner in the line cuts down on any harmonic radiation getting to the amplifier. There may be other reasons but these were the two I have heard of.

73
George
W3GEO
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!