[time-nuts] Fluke 6061A Synth. RF Generator

Richard Moore richiem5683 at gmail.com
Sun May 25 05:03:52 UTC 2014

Hi All -- Sorry if this is off-topic, but you all have a lot of 
experience with equipment. I just picked up a 6061A and I'm happy to say 
it mostly works. But... at frequencies below 250 MHz, as the frequency 
output is decreased, the level drops too, and starting from +12dBm 
(rated out, more-or-less), by 20MHz, the positive peak of the sine wave 
is flattening -- this progression of level drop and increasing 
distortion keeps on until the bottom at 10kHz, where the level is over 
4dB low and distortion is fairly significant.

I'm a complete novice to this instrument and to synthesizers in general. 
I can use some tips about what circuits or parts might be causing this, 
or where to look to start on a fix. I do have a manual with schematics. 
I seem to recal reading that there is a Low Band circuit that works at 
245MHz and below, so it seems like that may be where to start looking. 
Any and all suggestions appreciated.

I welcome off-list comments if that seems most appropriate.

Dick Moore

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