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: Watt meter - Antenna Tuner - Who's first?  (Read 3827 times)
N0URE
Member

Posts: 39




Ignore
« on: October 26, 2012, 03:32:58 PM »

For the first time I have independent Digital watt meter and auto tuner.
Both LDG. DWM-4 and Z-11Pro II.

Now the questions:
If I put the watt meter first I will read total watts including those lost to heat in the tuner.
If I put the tuner first will it still see the true impedance of the line & antenna or just the front side of the watt meter?
Is the watt meter transparent for impedance to the line and antenna?

John
Logged
WX7G
Member

Posts: 5917




Ignore
« Reply #1 on: October 26, 2012, 06:47:17 PM »

The watt meter is always mounted between the radio and the tuner.
Logged
K1CJS
Member

Posts: 5855




Ignore
« Reply #2 on: October 27, 2012, 04:47:17 AM »

It really depends on whether you want to see how much power is being delivered to the antenna--or to the tuner.  The wattmeter usually is transparent as far as impedance goes.  If you're going to leave the wattmeter in the circuit, though, yes.  It should be left in between the radio and the tuner.
« Last Edit: October 27, 2012, 04:50:09 AM by K1CJS » Logged
WB2WIK
Member

Posts: 20542




Ignore
« Reply #3 on: October 27, 2012, 09:29:27 AM »

The watt meter is always mounted between the radio and the tuner.
This is the correct answer.

Placing the wattmeter in line between the tuner and the antenna will yield inaccurate readings unless your antenna is well matched to begin with, in which case you don't need the tuner.
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!