Re: Something has been blown
If the IRF510's still draw some current through PA-PWR during transmit,toggle quoted messageShow quoted text
and that current changes when you adjust the gate bias with RV2 and RV3
(adjust this very carefully, as it quickly goes to hundreds of mA)
then the IRF510's are probably just fine.
Regarding cheap IRF510's on ebay, you might read this old thread:
They cost $1 on mouser for singles, below $0.50 if you buy lots, and you know who made it.
I don't see much point in buying on ebay.
As Arv says, make sure you have a good 50 ohm dummy load when testing.
Perhaps get four Xicon 200 ohm 3W metal film resistors (mouser 283-200-RC)
when buying the spare IRF510's.
On Thu, Jan 25, 2018 at 07:31 pm, Arv Evans wrote:
Since there is no short with the IRF-510 devices in place but not connected to the chassis, it is