[Premium-Rx] WJ 8718 problem

Stephen M. Linscott linscot at rice.edu
Sun Feb 1 18:30:47 EST 2009


Well, that was easy. I unplugged the 1 MHz cable from my Rubidium  
frequency standard, and flipped the CLOCK switch on the 8718 back to  
INT. I think the voltage out of the standard is a little high. The WJ  
spec is "a 1 MHz reference signal of at least 50 mv rms into 50 ohms".  
The lowest I could adjust the standard output was 1 volt rms, so maybe  
it was causing the internal clock to generate harmonics?? The Austron  
frequency standard has four 1 MHz outputs on a plug-in card, each  
adjustable with a 20-turn pot, so I could modify one of them to lower  
the voltage. A project for another day - right now I think I'll just  
enjoy clean CW for a while! :-)

73,

Steve

ARRL Life Member - W5EGP
NRA Life Member
TSRA Life Member
Republic of Texas


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