Quad Driven Mixer 5 to 10 MHz Doubler Atricle
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
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
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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
--
"The power of accurate observation is commonly called cynicism by those who
have not got it."
-George Bernard Shaw
Dr. Don Latham AJ7LL
Six Mile Systems LLC
17850 Six Mile Road
Huson, MT, 59846
mail: POBox 404
Frenchtown MT 59834-0404
VOX 406-626-4304
Skype: buffler2
www.lightningforensics.com
www.sixmilesystems.com
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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
--
mailto:oz@ozindfw.net
Oz
POB 93167
Southlake, TX 76092 (Near DFW Airport)
I believe I have a PDF copy of the article if anyone wants it. It's
about 1.3 MB in size.
DaveD
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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
John wrote:
It is a cute technique, not originated by me, but useful.
Indeed it is. I designed a similar one using a quadrature hybrid
splitter and level 7 mixer, and it's almost scary how well it
works. It's as cute as a regenerative divide by two using a DBM.
Best regards,
Charles
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.
Alan
G3NYK
----- Original Message -----
From: "Dave Daniel" kc0wjn@gmail.com
To: "Discussion of precise time and frequency measurement"
time-nuts@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.
DaveD
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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
I'm a member, and the article is not there -- just the Excel spreadsheet
and a Word document of the parts list.
Too bad, I have a handful of 5 MHzx TCXOs.
I may have hardcopy of the issue, will have to dig for it.
Jim
wb4gcs@amsat.org
On 11/12/2014 3:34 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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
This email is free from viruses and malware because avast! Antivirus protection is active.
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Brian wrote:
Personally, I'm lazy and like the Wenzel "full wave rectifier"
design with a nice BPF on the output to obtain a clean 10MHz.
The advantage of the multiplier circuit is that the signal straight
out of the mixer has excellent harmonic and 5MHz suppression. In my
circuit with the quadrature hybrid, 5MHz feedthrough is less than
-45dBc and the most prominent harmonic (30MHz) is less than
-30dBc. The visible spurs are all odd harmonics of the 10MHz output,
so the signal is symmetrical and for many uses does not need any
further filtering. I generally use a 2-pole active filter that
reduces the 30MHz to better than -55dBc, and if I need to get crazy I
can add a simple series LC at the output to get the 30MHz below
-70dBc. This strategy minimizes the risk of temperature-dependent
phase shift from the steep filter that would be necessary to reduce
the spurs to those levels following a diode doubler.
Best regards,
Charles
I digitized the first 2011 article to hand, the one in Jan-Feb; it's a smaller
article, and not as elegant as the later one. Anyone interested can email me
off-list. You're allowed to have a copy for your own use, just can't
re-publish.
Don
Jim Sanford
I'm a member, and the article is not there -- just the Excel spreadsheet
and a Word document of the parts list.
Too bad, I have a handful of 5 MHzx TCXOs.
I may have hardcopy of the issue, will have to dig for it.
Jim
wb4gcs@amsat.org
On 11/12/2014 3:34 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
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
This email is free from viruses and malware because avast! Antivirus
protection is active.
http://www.avast.com
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
--
"The power of accurate observation is commonly called cynicism by those who
have not got it."
-George Bernard Shaw
Dr. Don Latham AJ7LL
Six Mile Systems LLC
17850 Six Mile Road
Huson, MT, 59846
mail: POBox 404
Frenchtown MT 59834-0404
VOX 406-626-4304
Skype: buffler2
www.lightningforensics.com
www.sixmilesystems.com