David AD8Y has an article about the Festival of frequency Measurement in the most recent issue of the West Mountain Radio Newsletter: http://www.westmountainradio.com/pdf/Quarter-1-2020.pdf
Cheers!
Month: April 2020
ARRL Frequency Measuring Test for April 2020: The results are in!
The spring Frequency Measuring Test was 0200Z-0225Z on Apr 24! (For those of us in the United States, that means the evening of the 23rd.) The radio club did well with at least five entries, two of which are in the winners’ circle as seen below.
From the ARRL web site:
04/29/2020
The results of the spring 2020 ARRL Frequency Measuring Test (FMT), conducted on April 24, have been posted. Coming in at the top of the list for stations entering readings of both the 40-meter and 80-meter frequencies was Steve Cerwin, WA5FRF. His average error rate was 0.004902 parts per million (ppm).The Top 10 looked like this, with average error rates in ppm. Bill De Carle, VE2IQ, has posted a ranked list of participants who submitted readings for both frequencies.
1. | WA5FRF | 0.004902 |
2. | WA2IKL | 0.005584 |
3. | N7WS | 0.005636 |
4. | N9CIF | 0.006999 |
5. | NJ0U | 0.007051 |
6. | N8OBJ, John Gibbons | 0.007655 |
7. | AD5MT | 0.008415 |
8. | KB3UMD, Aidan Montare | 0.008415 |
9. | WB6RJH | 0.008492 |
10 | AB4RS | 0.009174 |
Today’s FMTs are conducted completely online, with no manual log-checking or intervention. Connie Marshall, K5CM, provides Bruce Horn, WA7BNM, with the precise actual frequencies, participating individuals submit their measurements, and machines handle the rest. Ninety-eight radio amateurs took part on the April 2020 FMT. The next FMT will take place in November.
Taking part in the FMT does not require special laboratory equipment. Modern HF transceivers can measure frequency quite accurately, and SDR-based receivers and available software can enable precise frequency measurements. Today’s FMT leaders are able to accurately measure beyond the number of decimal places (out to 5) that a typical transceiver will display, however. One station participating in the 2019 spring FMT used an Elecraft KX3 and Spectrum Lab audio software. Another employed his Elecraft K3 transceiver and tuning forks to get within 1 Hz of the mark on both bands.
Some information on how to measure the frequency of a carrier is available on Marshall’s website as well as in past articles in QST. Visit the FMT-Nuts discussion group on groups.io.
FacebookShare to TwitterTwitterShare to LinkedInLinkedInShare to RedditRedditShare to More
Call Sign / Name Search
Explore ARRL
On The Air
Special Event Stations, DXCC Program, W100AW & W1AW QSLs via Bureau, Amateur Code, Operating Resources, QSL Service, Centennial QSO Party, NPOTA, Logbook of the World, Operating Specialties, W1AW, International Grid Chase 2018, Hiram Percy Maxim 150th Birthday Celebration, Awards, Contests, Amateur Radio Direction Finding
Licensing, Education & Training
FCC License Info and Forms, Volunteer Instructors/Mentors, Getting Licensed, College Students and Educators, Volunteer Examiners, License Certificates, Amateur Radio in the Classroom, Courses & Training, Get on the Air, Lifelong Learning, What is Ham Radio
Membership
Member Directory, myARRL, Membership Certificate, Blind Membership, Join ARRL/Renew Membership, member feedback, Dues Increase FAQ, Member Discounts, Membership Levels, Member Support, Techquestion
Regulatory & Advocacy
State and Local, Volunteer Consulting Engineer Program, Volunteer Counsel Program, Antenna Regulation and Zoning, CCR Study Information, International, Federal RFI Preemption, Technical Relations Office, Federal, Volunteer Monitor Program, Volunteer Monitor Resources
Public Service
NTS Manual, Ham Aid, Public Service Resources, Public Service Honor Roll, NTS, Volunteer Form for Deployment Consideration, Puerto Rico – Caribbean Recovery 2017, 2018 Hurricanes, Hurricane Maria – 2017, Hurricane Irma – 2017, Hurricane Harvey Response, ARES, Served Agencies and Partners, SKYWARN Recognition Day, 2019 Hurricanes
Technology
ARRL References, Tech Tips, Tech Portal, Radio Frequency Interference (RFI), Radio Technology Topics, ARRL Lab
Get Involved
Recruiting & Outreach, The ARRL Foundation, Clubs, Volunteer Opportunities, Youth, Donate to ARRL, Hamfests and Conventions Calendar
Publications & Online Store
ARRL Publication Dealers, ARRL Store, List all Products, Return Policy, Periodicals, Customer Service/Support, Product Notes, Shipping and Tax
About ARRL
Privacy Policy, Site Index, ARRL Strategic Plan, Centennial, Copyright, Media and Public Relations, Organization Structure, General Information, Advertising and Other Business Opportunities, Library, ARRL Social Media, Employment Opportunities, Visit Us, Contact ARRL
ARRL, the national association for Amateur Radio
225 Main Street
Newington, CT, 06111-1400 USA
Tel:1-860-594-0200 Fax:1-860-594-0259
Toll-free:1-888-277-5289
hq@arrl.org
Contact ARRL
The Frequency Measuring Test is competition of an acquired taste. The task is to measure, within two minutes, the frequency of an amateur radio signal being sent from K5CM, Connie Marshall’s home version of the NIST in Muskogee, OK. This is why we like amateur radio so much, everybody has his, her, or their own version of it. Some chat on walkie-talkies. Some lovingly maintain caesium clocks. Connie does the clocks.
— presumably David, AD8Y, or Kristina, KD8OXT, describing W8EDU’s participation in the fall 2019 FMT
We will announce the next one, probably in November, and we encourage everyone with HF receiving equipment at their location to attempt a measurement! Reach out to us if you would like guidance on preparing for the event. No caesium clocks are necessary–even a modest station can score respectively with practice!
Details on the FMT from the ARRL.
Congratulations to N8OBJ!
Congratulations to our lab director and technical advisor, John Gibbons N8OBJ, for his code related to our HamSCI research project, which just appeared in the latest version of the fldigi software package!
Update: version 4.1.11 included a bug on that prevented it from working on Windows platforms. The newest release, 4.1.12, includes fixes and should allow Windows users to take advantage of John’s code changes.
Wed Apr 1 2020 - Version 4.1.11
*** Bug fix release ***
cwio_morse
* segmentation fault fix
- change cwio_morse to *cwio_morse
[...]
analysis mode
* changes to data file output - submitted by John Gibbons, N8OBJ
[...]
John’s code will help us and the HamSCI community as we develop a network of citizen science receivers to study the ionosphere. It will also aid the general Amateur Radio community in making frequency estimation measurements of whatever signals are interesting to them!
Go download the latest version, and get involved!
73’s,
Aidan KB3UMD
W8EDU 