LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
  #2   Report Post  
Old August 13th 04, 06:56 PM
Ralph Mowery
 
Posts: n/a
Default

More it is about a tuner's habit of showing a higher VSWR as the power
level is increased.

I have read that this is not the case. VSWR does not change with power
level, and that something is wrong with the VSWR meter, but what would
be wrong with the meter, and more importantly, *which* is correct, my
low power or high power, and how do I find out?

My Rig VSWR meter and my tuner meter read fairly close at the low end,
but diverge at the high end. But both read higher VSWR than at low
power. so that isn't a help.

I do have another VSWR meter, but at this point I suspect that adding
another variable will just further confuse me! 8^P

Anyone have an explanation?


Simple. This has been discussed many times. The diodes are nonlinear and
when on the low end of the voltage across them, they conduct differant.

To get the best indication of swr use the larger ammount of power. You can
use the lowest ammount of power to adjust the tuner for the lowest indicated
SWR . That will not matter. It is just the most accurate swr will be seen
by the meter at a higher power level.

If you use a directional wattmeter that has a wattage scale and calculate
the swr , it should be the same at all power levels provided the meter is
accurate.





 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stacking Distance Question. More Information ab5mm Antenna 8 June 5th 04 08:18 AM
Conjugate matching and my funky VSWR meter Lord Snooty Antenna 27 May 27th 04 08:44 PM
Stupid question G5RV Ken Bessler Antenna 17 January 9th 04 12:06 PM
Seperation question???? thanks [email protected] Antenna 0 October 7th 03 07:57 PM
Yagi / Beam antenna theory question... Nick C Antenna 12 October 5th 03 12:15 PM


All times are GMT +1. The time now is 04:56 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017