Re: LM324 AGC Issue

Murray Wills (ZL2IQ)
 

Thanks. Yes I have been following the instructions. I am going to check the resister values today as R1 or R2 could be wrong. M


From: BITX20@groups.io <BITX20@groups.io> on behalf of Joe Puma via Groups.Io <kd2nfc@...>
Sent: Tuesday, October 22, 2019 3:30:18 AM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] LM324 AGC Issue
 
You have to calibrate the POTs on the top row. It’s in the notes of the build and calibration. If you did that step then something is wrong. If I recall the second pot on the top of board from the left adjusts the voltage for the LM chip. The 4v is desired voltage to power LM chip.  

Joe
KD2NFC


On Oct 21, 2019, at 10:14 AM, Joel Caulkins/N6ALT <caulktel@...> wrote:

Here you go.

Joel
N6ALT
<AGC Details.pdf>
<AGC Details.pdf>

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