Re: Q70 replacement
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That looks like a cool mod. I tried a darlington pair in place of the Q70. That works as well.
On Mon, 16 Jul 2018, 07:33 Tom Cooper via Groups.Io, <email@example.com> wrote:
Q70, the audio pre-amp, has a really big job in the uBITX and sometimes gets overdriven by very strong signals. Plus, since i replaced the 2822 audio amp with an LM380 I've lost 8db in audio gain. I wondered if another transistor would improve this.