[time-nuts] FTS 1200 transistor replacement
kb8tq at n1k.org
Sat May 17 16:50:51 EDT 2014
The 2N5089 from ON semi is a pretty good bet for a high beta / audio part. They are $0.37 a piece from Mouser with 11,542 in stock.
On May 17, 2014, at 11:37 AM, EWKehren at aol.com wrote:
> Traced the problem of my FTS 1200 to the first BC109 Transistor on the
> A2/A3 AGS/Amplifier board. Since it is right after the Oscillator transistor
> low noise is critical. This unit is at least 30 years old and my question is,
> what transistor will have even lower noise than the than low noise BC 109.
> Voltage is 6.43 V.
> Thanks Bert Kehren
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