Funny you should mention that -- just in the past few days I was browsing through an old [1968 edition] ARRL "Hints and Kinks". In an article titled "Diode Protection for the Heath R.F. Probe" the author suggested adding a NE-51 neon lamp across the diode (a solution he came up with after frying "three or four" 1N34s). This should work for the Elecraft probe as the schematic shown in H&K for the Heath probe is virtually identical to the schematic in the K1 manual (the only difference is a .005 vs. .01 cap for the input coupling and the polarity of the diode).
73 es GL, Al On Mon May 22 2006 06:53 pm, [EMAIL PROTECTED] wrote: > Date: Mon, 22 May 2006 17:22:23 -0500 > From: "Stan Rife" <[EMAIL PROTECTED]> > Subject: [Elecraft] Elecraft RF Probe > To: <elecraft@mailman.qth.net> > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="US-ASCII" > > I forgot to mention that I put a 1N4148 in and it seems to have > taken it out too. > > > I put too much voltage on my poor probe. Is there a heavier diode > that will take a little more voltage, say around 70v, that I can replace > the 1N31A with? > > > Stan Rife > W5EWA > Houston, TX > K2 S/N 4216 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
