Hiro, JJ1FXF It is easy to build your own copy of the uBITX-4 audio section to experiment with.? You will need two 2N3904 and one 2N3906 and assorted resistors and? capacitors.? This will let you play with the same audio section and work up changes if you find them necessary.? While the uBITX is not modular, the circuit sub-sections are isolated enough to allow parts to be constructed as stand-alone modules.? This lets builders work on upgrades and modifications without hacking into their uBITX boards.? Once a suitable modification has been designed, built, and tested it can then be applied to a working uBITX with more chance of success.? Arv? K7HKL _._ On Thu, Jun 28, 2018 at 11:46 PM hirosmb JAZZ <hirosmb@...> wrote:
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