[Elecraft] W2 wattmeter

Don Wilhelm donwilh at embarqmail.com
Sat Aug 29 13:49:31 EDT 2020


Joe,

The telling answer is in your statement "the radio has an internal ATU".
The radio is showing the SWR between the radio and the ATU.
The wattmeter is showing you the SWR after the ATU - in other words, the 
SWR of the untuned antenna.  So there may be nothing wrong.

Connect a dummy load to the wattmeter output and see what that reads - 
should be 1.0.

73,
Don W3FPR

On 8/29/2020 1:29 PM, Joseph McIntire wrote:
> My wattmeter  seems to be displaying  the wrong SWR on the LEDs. I bought a digital display unit on line. The radio has an internal ATU. The radio says tuned 1.0 - 1. when I key the radio says 1.0 - 1 and the DDU says .16 SWR but the LEDs show 1.5 - 1. So if I hit 1.2 - 1 the LEDs all flash so I can not tell at a glance if the SWR is good. So I was wondering if any one had seen this or know  if it can be  fixed without sending it in. I already  replaced the coupler do to i thought that was the problem.


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