[time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle
alan.melia at btinternet.com
Wed Nov 12 19:18:14 EST 2014
As a subscriber to QEX I saw this article but thought that the "bi-phase
rectifier" was a lot easier and has be well characterised by the
"time-nuts" experts. Now it has shown up here I would be interested to hear
from those experimenting how badly the NE602 performs compared with a
passive DBM for "nuts-style" applications :-)) I have a pile of kit with
5MHz VCXOs (Racal and Marconi) including an excellent GPSDO by Rapco.
----- Original Message -----
From: "Dave Daniel" <kc0wjn at gmail.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Wednesday, November 12, 2014 10:36 PM
Subject: Re: [time-nuts] Quad Driven Mixer 5 to 10 MHz Doubler Atricle
>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
>> sell you one, packaged, for about 50 rasbucknicks.
>> 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.
>>> 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
>>> titled "Converting a Vintage 5 MHz Frequency Standard to 10 MHz with a
>>> 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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