On Thu, 17 Dec 2009 17:20:44 -0000, Adrian Rees \(MW1LCR\) wrote: >Whilst the digital frequency counter is working fine measuring an external >signal, the internal counter just keeps going up and up in frequency. I guess >that the second half of the digital display board is part of the local >oscillator curcuitry.
I should mentioned that, in addition to the suggestions already offered, it could also be bad DR-7 board connections. I had a similar intermittent problem in my TR-7, and fought it off an on for several years before I finally got it resolved. To this day, I'm not sure if it was a solder connection somewhere on the board itself, or misalignment of pins in one of the Molex connectors. But I lean towards the Molex connectors. 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://radiojim(dot)exofire(dot)net http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
