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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