On Sun, 2 Jan 2011 14:33:20 EST [email protected] writes: > Built a W1FB preamp (Aug 1988 QST) for use with my 4.5 square > shielded loop > which is located in my shack, and the MC1350 IC gets permanently > altered > when I transmit on 160 meters using my 53 foot base loaded > vertical.
> Wonder if anyone else has experienced this same problem... Yes! I've had the burn-out problem when I operated with high power. So, I built a protection device in the box with the preamp and that took care of the problem. The "Front End Saver" (I think that's the title/name of the device) was in CQ Mag, Feb 97, pg 32. Far Circuits may still have the FES PC board. 73, Charlie, N0TT _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
