Re: Latest Build, Mods and results.
Pot RV1 on the uBitx varies output power.toggle quoted messageShow quoted text
VK2ETA came up with a way of using the shoulder of the 45mhz crystal filter to vary the output power.
and wrote software to implement it: https://groups.io/g/BITX20/message/50215
I believe this has also been incorporated into the KD8CEC firmware.
Requires no hardware mods. This only works for SSB transmissions and not for CW,
though could be extended to CW if signal CW-KEY were injected into the second mixer instead of the first mixer.
No easily discernible change to the audio, though will be some variation in the audio response:
The uBitx.net site is getting rather large. To say there's some sort of solution there
is becoming akin to saying there's a solution in one of the 52000 posts in this forum.
My best guess is that Dr Bill is suggesting an implementation involving a new PC board
controlled by extra pins from the Raduino to run some relays that select various
There are plenty of other ways to do this, most involve hacking in some sort of attenuator.
On Wed, Jun 13, 2018 at 07:14 am, K9HZ wrote: