I have 12 Micor receivers in the 438 - 439 with the only mod being a 6 - 9 pf cap add to L101 on the solder side of the board. This brought the drive up on the channel element. The preselector went down with no problem.
Chris N6icw
I have 12 Micor receivers in the 438 - 439 with the only mod being a 6 - 9 pf cap add to L101 on the solder side of the board. This brought the drive up on the channel element. The preselector went down with no problem.
Chris N6icw