Re: Transmit Output Power (CW) #v5
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Rob, I have not modified the LPFs on my V4, but I did change the relays. The filter caps on the finals are rated 470uf at 25v, so no need to screw with them. On the harmonics, I did see an increase on 30 meters, but I usually don't operate that band. Other bands were with in spec.
One thing I do, (extra insurance) is run my rig through another low pass filter, external to the ubitx.
The transmit issue at 7000khz bit me in the butt too, put me in panic mode, it did!!
I do not use a step up converter I just use another power supply that feeds the finals.
I just purchased a bunch of 2N5109 to modify my V6, my V4 has the 2N2222a in so I'm looking forward to see what improvement those will do.
Have fun!! Stay safe..
On Mon, Mar 30, 2020, 2:47 PM Rob French (KC4UPR) <kc4upr@...> wrote: