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Field Day June 22–23, 2019!

posted May 1, 2019, 5:10 AM by C. Matthew Curtin   [ updated May 1, 2019, 5:12 AM ]

The Central Ohio Traffic Net will join Franklin County Auxiliary Communications Club in the operation of W8THV for Field Day, June 22–23, 2019. Whether you can visit for an hour or the entire operating period, please sign up with the form below to coordinate.


Thanks for Support on NVIS Day!

posted Apr 28, 2019, 1:41 PM by C. Matthew Curtin

Yesterday, Franklin County Emergency Management & Homeland Security auxiliary communications station W8THV participated in NVIS Day. We operated a field expedient station, all outdoors, powered by battery backed by solar recharger and made contacts throughout the state.

Thanks for the support of the operation!

NVIS Day at Franklin County Emergency Management & Homeland Security

posted Apr 17, 2019, 5:34 PM by C. Matthew Curtin   [ updated Apr 21, 2019, 6:58 PM ]

COTN will be operating for NVIS Day, April 27, 2019, at Franklin County Emergency Management & Homeland Security, 5300 Strawberry Farms Blvd, Columbus, OH 43230. We'll begin setup at 9 A.M., with operations starting at 10 A.M., and complete operations at 4 P.M.

As one of the auxiliary communications (AUXCOMM) organizations supporting Franklin County Emergency Management & Homeland Security (FCEM&HS), Central Ohio Traffic Net (COTN) will be joining the Franklin County Auxiliary Communications Club (FCACC) operation of W8THV for NVIS Day.

Other organizations will be joining with the FCACC operation, working together under the principle of Unified Command in the Incident Command System (ICS). Supporting FCACC will be Franklin County Ohio Amateur Radio Emergency Service, Central Ohio Traffic Net, and the Ohio Military Reserve—which will be operating W8OMR/F from the site.

NVIS Day at FCEM&HS is a warm-up for a much larger exercise with a distinct emergency-mode spin to it, ARRL Field Day in June. Whether you're able to operate the entire six hours of the event or come by just for an hour, you're welcome to join. There's no signup necessary. Just bring yourself, a copy of your amateur radio license, and sign in at the site to be put to work in an area that you'd like. We look forward to seeing you there!

To see stations currently registered to participate in NVIS Day throughout the state of Ohio and beyond see the map below.

NVIS Day, Apr 27

posted Apr 13, 2019, 5:13 PM by C. Matthew Curtin

Saturday, April 27, 2019
10 A.M.–4 P.M.

Is your station ready to establish and maintain high-reliability communication with other stations around Ohio when repeaters, phone, and internet service are impaired? When infrastructure just isn’t there, HF radio using Near-Vertical Incidence Skywave (NVIS) propagation offers the ability to stay in contact on frequencies of 2–30 MHz for distances of about 30–400 miles.

NVIS Day is the ARRL Ohio Section event to test your NVIS antenna designs and builds. Join us on Saturday, April 27 to show how well amateur radio can keep Ohio communicating! This is not a contest: it’s an event for Ohio stations to operate with other Ohio stations and understand how well they hear and are heard.


Date: Saturday, April 27
Time: Start at 10 A.M., end at 4 P.M.
Power: Up to but no more than 100w
Exchange: six-digit grid, power, and true—measured—signal report
Schedule: This isn’t a contest, so take your time! Try different designs! Have lunch!
Register: Tell others that you’ll be operating, when you’ll be operating, and how to find you.

We’ll publish a map and information for all registered stations just before the start of the event.

We look forward to hearing you on the air!

C. Matthew Curtin KD8TTE ASEC
Stan Broadway, N8BHL SEC

COTN Special Session: March 31, 8 P.M.

posted Mar 31, 2019, 9:11 AM by C. Matthew Curtin

CENTRAL OHIO TRAFFIC NET will hold a special session to test 6m capability. Our objectives are:
 1. Determine how many stations we can get on 6m with eight hours' notice,
 2. Determine our range of coverage (distance),
 3. Determine our depth of coverage (how well all stations can hear each other), and
 4. Determine the quality of signals for traffic handling.

Although historically a 2m net, our mission is to serve Central Ohio, and the ability to move among bands and even modes is advantageous from the perspective of resilience. We will hold our regularly scheduled exercise in the usual way, and at 8 P.M. we'll begin operation on 6m.

To help us with this exercise, please:
 1. Be prepared to operate at 50.250 MHz USB at 8 P.M. this evening,
 2. Bring at least one piece of traffic to the net—if you can't think of a destination please address your radiogram to W6RRI COLUMBUS OH 43209,
 3. Be prepared to receive traffic, and
 4. Send a copy of the traffic you send or receive by email to

We look forward to hearing you on the air this evening!

C. Matthew Curtin KD8TTE
COTN Net Manager

COTN Calendar Updated

posted Feb 3, 2019, 6:42 AM by C. Matthew Curtin

We have updated Central Ohio Traffic Net's posted schedule to show activity where we have regular contact. The schedule, as always, can be found on our Net Schedule, Frequencies, and Event Calendar Page.

We have removed references to the Eighth Region nets (8RN) and Eastern Area  nets (EAN) since we do not maintain direct liaison with them. We have added all Ohio Section nets and independent nets where we have regular liaison. We now show meeting times and frequencies for:
  • Ohio Single Sideband Net (OSSBN), ARRL Ohio Section Traffic Net
  • Buckeye Net (Early), ARRL Ohio Section Traffic Net (CW)
  • Buckeye Net (Late), ARRL Ohio Section Traffic Net (CW)
  • Ohio Slow Net, ARRL Ohio Section Traffic Net (Slow CW)
  • Ohio HF Emergency Net, ARRL Ohio Section ARES Net
  • Ohio Digital Emergency Net (OHDEN), ARRL Ohio Section ARES Net
  • Hit and Bounce Net (HBN) and Hit and Bounce Slow Net (HBSN) (CW and slow CW), Independent Traffic Net
  • 75 Meter Interstate Sideband Net (75M ISBN), Independent Traffic Net
All of these serve as outlets for outbound traffic; which we'll use depends on such factors as precedence of traffic, meeting times, and modes of operation. Of course we also maintain liaison to the Radio Relay International (RRI) Digital Traffic Net (DTN), which as an automated store-and-forward system does not have net schedules.

Emergency and Priority traffic will continue to relay immediately, without waiting for meeting times.

We can take inbound traffic through any of these routes, and are able to relay to any of the stations on our Roster, including stations at Franklin County Emergency Management & Homeland Security, Ohio Emergency Management Agency, Ohio Military Reserve, and Franklin County Amateur Radio Emergency Service (ARES). COTN can also move traffic to other services including Military Auxiliary Radio Service (MARS) and SHARES.

ARRL Board Adopts Traffic System Resolution

posted Jan 31, 2019, 4:39 PM by C. Matthew Curtin

Today, the American Radio Relay League released its formal minutes of ARRL Board of Directors Annual Meeting January 18-19, 2019. As always they can be found online at

We draw attention to two points as related to the handling of third party traffic on amateur radio.

The first refers to discussion led by our own Great Lakes Division Director Dale Williams WA8EFK.

24. Mr. Williams opened the discussion on the work of the Public Service Enhancement Working Group and entertained questions. He updated the Board on how the committee had incorporated comments gathered from last fall’s survey into the report. After finishing the ARES portion of this area, they will move to work on the National Traffic System. 

The second refers to both Amateur Radio Emergency Service (ARES) and the National Traffic System. Roanoke Division Director George “Bud” Hippisley, W2RU moved, and our Mr. Williams seconded.

36. On the motion of Mr. Hippisley and second of Mr. Williams, it was voted that:

Whereas the National Traffic System (NTS) is active 365 days a year; and

Whereas the NTS provides a large corps of operators experienced in formal 3rd party message handling and routing procedures and dedicated to providing emergency communications via radio; and

Whereas the NTS uses all modes – including “traditional”, digital, and yet-to-be developed modes – as appropriate and needed;

Therefore, be it resolved that:

1. The PSWEG is commended for their work in bringing the ARES Plan this far.
2. The ARRL affirms its support for the National Traffic System and all amateurs involved in traffic handling, and their role as partners to ARES in ARRL’s public service toolkit.
3. The Board recognizes the role and value of ARES and NTS in directly serving the public in addition to partnering with served agencies. 

COTN is a part of the Ohio Section of the National Traffic System and welcomes proper attention given to third-party traffic handling by the League. As a net also affiliated with Radio Relay International (RRI), we are anxious to see amateur radio organizations working together to develop, train, and hold to a single standard.

COTN 2018 Annual Report Available

posted Jan 20, 2019, 4:38 AM by C. Matthew Curtin

Central Ohio Traffic Net (COTN) is happy to announce the availability of its 2018 Annual Report. The sixteen page report summarizes the mission of COTN, its personnel, operations, training, and partners.

As one of the most active traffic nets in the amateur radio traffic system, COTN meets at least once daily to exchange traffic and to participate in training. Monthly, COTN gathers on the second Thursday of the month for in-person training and business.

Summary of statistics for 2018
Sessions Held 380
Checkins 3,639
Minutes of Net Operation 7,244
Messages Handled 1,059
Number of Net Control Stations 13
Number of Net Liaison Stations 7

The Annual Report has been added to the Net's archive of Reports.

SCARFfest Nelsonville Hamfest cancelled

posted Jan 18, 2019, 9:42 PM by C. Matthew Curtin

Due to the approaching winter weather, the Sunday Creek club has decided to cancel Sunday's Nelsonville Hamfest in the interest of everyone's safety. Please spread the word.

Jeff Slattery, ARS N8SUZ
District Emergency Coordinator
ARRL - The National Association For Amateur Radio™

Arnold Medical Team Looking For Radio Operators

posted Nov 29, 2018, 5:50 AM by C. Matthew Curtin

CQ, CQ, CQ. Calling all HAMs! Are you looking for something to do in the middle of winter? Do you want to get out and stretch your legs? We are currently taking volunteers for the 2019 Arnold Medical Team. This event will provide an opportunity to practice your ARES skills in a climate controlled setting with experienced team members. If you have never worked the event or are a little unsure of your skills, we have a mentorship program that will provide on the job training until you are comfortable with working the events on your own. You will not be placed at an event alone as you will serve as the communications component of the onsite medical teams consisting of a doctor, RN, EMT, and/or medical student. The only requirement to participate is a Dual-Band handheld radio, valid amateur radio license, and a great attitude!

The 2019 Arnold Sports Festival starts on Thursday, February 28, 7am and ends on Sunday, March 3, 7pm.

Signup for any shift on any day or the entire weekend. If you know of any doctors, nurses, or EMTs that would be interested, please encourage them to sign up!

Meals are provided and parking is partially reimbursed. Check out the Team website for more information at

Sign up today at

If you have any questions, please feel free to drop me an email at or call me at 614.496.5345

Patrick Gibson - KD8ION
Arnold Medical Team - Deputy Director
Central Ohio Grotto

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