Re: Antuino 2.0

David Wilcox
 

I have experienced the same thing and at times thr SWR just jumps all over. I keep resetting it and calibrating it and when it does settle down it is solid and gives the same results as my other meter (YouKits FG-01). Am waiting for more info on how to deal with this issue. It also happens with a good MFJ 30 watt dummy load.

David J. Wilcox K8WPE’s iPad

On Jul 3, 2019, at 7:57 AM, Raj vu2zap <@Raj> wrote:

At 50 Ohms with a dummy I get 1:1 sometimes 1:1.1 right across the spectrum.
Tried 30Mhz +- 25 then 50 and also 100 mHz.

at 75 = 2.3
at (50 || 50) 25 = 3.5 << should be same for 100 ohms

Sometimes the values are erratic.

Raj


At 03-07-19, you wrote:
Recalibrated both. Little difference. Occasionally reads 2.3:1 then goes back to 3.5 (wth 100 ohm non inductive load.) Pretty much the same from 8-30 MHz. 200ohm load shows 8.7:1 SWR. Same loads on VK5JST analyzer shows 2:1 and 4:1 (+/- 2% and pure resistive) over same frequency range.
--
Dan, NM3A


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