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

[paul swed]

I also appreciate the Wenzel circuit. Not seeing the other article, I might
guess that maybe it offers suppression of the original 5 MHz signal as a
benefit.
It seems to be the equivalent of a digital XOR circuit with one lead
delayed by 90 degrees.
Regards
Paul
WB8TSL

On Wed, Nov 12, 2014 at 6:06 PM, Brian, WA1ZMS <wa1zms at att.net> wrote:

> Gentlemen-
>
> I have my paper copy in front of me with the original article.
> I am not certain that I can just scan it and send it around due to
> ARRL & Author copyright matters.  But I am willing to scan it.
>
> With all due respect to John, K6IQL the author who spent much time
> on his design......I would opine that an equivalent doubler could be
> made from the Wenzel doubler circuits that are on the Wenzel web
> page and from first-hand experience...I used such a 5-to-10 MHz doubler
> for all of my amateur radio projects up through 403GHz.
>
> The K6IQL design, in brief, splits the 5MHz signal into two paths.
> One passes to the LO port of a Double Balanced mixer, while the
> second path goes through a 90-deg phase shift network and into the
> RF port of that JMS-1MH mixer.  The output is taken from the IF
> port. The output is then buffered & filtered. He spent much design effort
> on the 90-deg phase shift network to keep it all temp stable.
>
> Personally, I'm lazy and like the Wenzel "full wave rectifier" design with
> a nice BPF on the output to obtain a clean 10MHz.
>
> -Brian, WA1ZMS/4
>
>
> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Oz-in-DFW
> Sent: Wednesday, November 12, 2014 4:41 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle
>
> Only a small subset of QEX articles on available in digital format. This
> isn't one of them. We'll either need to get a copy from the author, or from
> a QEX subscriber.
>
> On 11/12/2014 2:34 PM, Dave M wrote:
> > 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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>
> --
> mailto:oz at ozindfw.net
> Oz
> POB 93167
> Southlake, TX 76092 (Near DFW Airport)
>
>
>
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