Ed, I've thought about moving my 10 - 20 MHz unit as well. At one
point, I contacted PTS and they confirmed that the unit could be
modified by changing the filter module(s) -- not sure if there was more
than one. They quoted a couple of hundred dollars to make the change,
so I didn't pursue it.
If you are successful changing yours, I'd certainly be interested in the
details.
John
----
On 4/25/2011 3:03 PM, Ed Palmer wrote:
I know that some of you have X10 synthesizers so I hope this isn't too
far off-topic.
The manual shows that the frequency decade the unit covers is determined
by the PFF module. This module is nothing more than a 4-stage passive
filter (might be described as a helical filter - not sure) that selects
the correct 10 MHz harmonic of a fixed oscillator.
Has anyone attempted to retune this filter to shift their unit from one
decade to another? I'd like to move mine from 10-20 MHz to 0.1-10 MHz.
This would require retuning the filter from 160 MHz to 150 MHz.
Thanks,
Ed
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