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After my Amplifier SWR increases anytime (just a few tenths)the SWR will not decrease by itself . Cycling the amplifier on and off resets SWR back to 1.2 or less and it stays put but never decreases . My question is why does the sampling always stay at the high and not ever go down. The HF-Tuner does vary up ?and down a bit. I’m feeling no love with this SWR meter.

Hi i am having the same problem driving the amp with 30watts the hf auto tuner is saying 1.4 but the amp is all over the place spiking at 9.9 the going to standby mode?
im trying to run my station remotely what a pain?
cheers
Darren?

I’m seeing the amp with a extremely high ?vswr reading in standby ?and the tuner is low I just put the amp in operate and vswr resets when I xmit.?Can’t clear in standby mode. Why does amp vswr deviate so much with reference to the tuner vswr. Radio vswr 1.1?
i think a call to Palstar maybe in order.?

Hi Paul?
no im not using an arrestor?
i have 3 different antennas connected to the hf auto?
10m 5/8
9 element log periodic 7 to 30meg
my antenna endfed all band
all antennas even when resonant?
show bad swr on the la1k even after the hf tuner is 1.4 the amp will be ?2 to 2.5
has always been this way
i have always done the firmware updates as soon as they come out
i live 2 thousand + km from my station?
which I only visit a few times a year so you can see that this problem is frustrating when I cannot reset the amp
cheers
Darren

My amp did fail several months ago. Support from telephone to service and finally extremely fast shipping back was excellent. I waited to write this to enable a valid comment. Yes one LDMOS was replaced. Mark at Palstar was confident I would be pleased and explained everything to keep the amplifier stable. I’m so happy I bought a Palstar product. I can’t say enough about their support.
update:
Five months and all is well . I now auto tune then manual tune for 1:0 on amplifier. The antenna swr is a bit higher but the amplifier likes a 1:0 the swr on the antenna usually reads 1:1