VocalMaster A Speech Processor for Low Power Operators
Build this versatile and attractive accessory for the Yaesu FT-817 to give you more talk power.
I have had a lot of fun operating low power with my Yaesu FT-817 portable HF transceiver, but have often wished that it had some audio or RF
processing to add a little SSB punch. There are some excellent audio processing accessories available commercially, but I thought this would make a great homebrew project reminiscent of the early Heathkit days. With this in mind, I began to look for suitable building blocks to bring this idea to life.
I wanted to incorporate several design goals. First, the enclosure should be smaller than my radio, aesthetically pleasing, and made of steel or aluminum to provide RF shielding. Second, all of the components should mount on a printed circuit board with no point-to-point wiring to jacks or controls. Third, the input and output jacks must match the rig’s microphone connector. Fourth, I wanted some visual feedback on what was going on inside the box, such as an output level meter. And fifth, a built-in signal generator for antenna tuning would be an added bonus. The end result would combine all of these features into a small package that includes RF filtering and front panel controls, and is powered from the rig’s mic voltage.
Leer másVocalMaster speech processor for FT-817