That's always worked for me, Mike! The bit of resistance that I suggested that Jim add ahead of the FET gate and the diodes serves the same purpose as your incandescent lamp - but I expect that the lamp is more rugged and forgiving.
73, Charlie, K4OTV -----Original Message----- From: Topband [mailto:[email protected]] On Behalf Of Mike Waters Sent: Sunday, August 25, 2013 4:15 PM To: James Rodenkirch; topband Subject: Re: Topband: Two 2:1 transformers to choose from!! Ever since I added back-to-back 1N4148's between the preamp's input and ground many years ago, I have never lost a transistor in my preamp. Before that, it seemed that I was replacing it after nearly every thunderstorm. A couple of years ago I changed it a little: I added a small incandescent lamp in series with the preamp input. At the same I changed from just two to four of the same diodes in series/parallel. There are other ways as good or better than this, but this works for me. 73, Mike www.w0btu.com On Sun, Aug 25, 2013 at 10:13 AM, James Rodenkirch <[email protected]>wrote: > Any ideas on a front end protection circuit for a preampl? > _________________ Topband Reflector _________________ Topband Reflector
