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Home › ELEKTOR FORUMS › RF & Communications › SDR: Problems with home built board

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Topic: SDR: Problems with home built board
Author Post

g4ugm

1 post

Popping In
Popping In

Read post 22-02-2008 01:55

Folks,

Any one had any issues with source follower on the board. I don't seem to get any output from it. I assume I would get about 50mv out as its a source followe so should have zero voltage gain...

Dave
G4UGM

sarma

199 posts

Diehard
Diehard

Read post 22-03-2010 17:18

You are expected to use BF245C, not others.

However check for any possible track/pth break. Perhaps your 1Mohm needs to be checked for a possible break.

You should logically get a DC of 2.5V or so across source resistor and this would be used a negative bias on gate using 1Meg

Post edited by sarma on 23-03-2010 06:28

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