On Mon, Apr 26, 2021, at 12:21 PM, Gerard wrote:
I read that we can add a protective diode on K1, can you tell me where exactly
Gerard,
I put back-to-back diodes between pins 12 and 16 of the schematic (be careful as I have been told that does not agree with common pin numbering for the relay).? This is to protect Q90 from external RF sources while in receive mode.? Here is the K1 portion of the v6 schematic (all of the versions are the same in this area).
Unless you are asking about the kickback diode protection for the relay coil.? That is D7 above.
73
Evan
AC9TU
