Re: LM324 AGC Issue

Murray Wills (ZL2IQ)
 

Thank you Raj I will try those today


From: BITX20@groups.io <BITX20@groups.io> on behalf of Raj vu2zap via Groups.Io <rajendrakumargg@...>
Sent: Sunday, October 20, 2019 1:42:51 AM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] LM324 AGC Issue
 
Check R2, probably a wrong value.

See if you have an PCB hair line short, hot the board up to a strong back light and see if you spot anything!

Raj

At 19/10/2019, you wrote:
>Hi I have built up one of the LM324 AGC kits from India and used all the usual sources for circuits and photos to make sure it is installed correctly. The instructions say that there should be 4 volts at PIN 3 on the LM324 but I only have .75 volts maximum.
>
>Has anyone else had success with this kit?
>if not is there a recommended kit
>I have replaced the LM324 and the BC547 and found no difference.
>
>Cheers
>Murray ZL2IQ




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