On Fri, 5 Aug 2011 11:29:25 -0400, Jerry Semones wrote: >I have been using a homebrew tuning 'pecker' for years without ruining the >finals in my Drake's or my SB200 amp. >They allow tuning the finals without stressing them. The only requirement >is that you use a peak reading wattmeter.
I had an old 1-gig MP3 player that I wasn't using for anything, so I "built" a 5-minute pulsed 1 KHz audio file in Audacity and loaded it on the player. I rigged up a small earpiece speaker out of a scrap communications headset to it, with a cuff to slip over the mic (I could have hardwired it ti the mic circuit, but I was in a hurry to see if it actually worked). It works great, and I never saw the need for a peak reading wattmeter. The ballistics of the meter movements average out nicely, and at 50% duty cycle, all the readings come out about half of what one would expect peak to be. 73 -Jim -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! "Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime." HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
