[time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle

Dave Daniel kc0wjn at gmail.com
Wed Nov 12 17:36:12 EST 2014

I believe I have a PDF copy of the article if anyone wants it. It's 
about 1.3 MB in size.


On 11/12/2014 2:36 PM, Don Latham wrote:
> It's interesting. I took the hint, and tried sin(a)*sin(b) expand and set
> b=a+pi/2. fun fun fun.
> All that's needed in theory is a mixer and a pi/2 phase shifter at 5 MHz.
> Probably a bunch of other stuff because of real parts :-) Minicircuits will
> sell you one, packaged, for about 50 rasbucknicks.
> Don
> Dave M
>> I am able to download the files associated with the article, but not the
>> article itself.  Guess I need to be a paying member to get the article.  The
>> only files in the download are the XLS file for calculating the filter
>> values, and the parts list.
>> It's at http://www.arrl.org/qexfiles in the year 2011 listings, filename
>> 3x11_Roos.zip
>> titled "Converting a Vintage 5 MHz Frequency Standard to 10 MHz with a Low
>> Spurious Frequency Doubler"
>> Dave M
>> John C. Roos via time-nuts wrote:
>>> Several list members contacted me expressing interest in the
>>> article. None of them were able to download much or anything
>>> from the ARRL QEX web site. That includes me and other ARRL members.
>>> I am working the issue with one call to ARRL so far today. I will
>>> contact Larry Wolfgang at ARRL and see what Ican bust loose. So
>>> hang in there. It is a cute technique, not originated by me, but
>>> useful. Right now I have to get the ARRL FMT done first.
>>> -73 john c roos k6iql
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