Radio Orienteering

Amateur Radio Direction Finding (ARDF)

Welcome to Radio-O.  Here is how it works! We provide a radio receiver with a directional antenna, an orienteering map, a compass, and a finger stick. By pointing the antenna and listening to the signal you can determine the direction of the signal.  Using this information you navigate to the transmitter and punch in with your finger stick. Only the start and finish are marked on the map and it is important to keep track of where you are.  To qualify as finishing you must find at least one transmitter on your course and reach the finish within the time limit. To calculate results -- first; the number of assigned transmitters you found, then; your time on the course. We offer beginner through advanced courses, Regular BOK fees apply, and Pre-Registration is required.

Latest News in Radio Orienteering

June 10th, 2019

2019 ARDF US and Region II Championships

Link to Bulletin 3 All of the Bulletin 3 details can be found in this Google Doc. Registration and Payment can be found on the OUSA site: Use this link to see who has already registered: Deadlines Approaching Costs go up on July 6, & July 14, 2019 Hotel Discount Deadline July 6, 2019 Besides […]

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June 5th, 2019

2019-06-02 Eno River ARDF/Radio-O Results

The event had a 2 m classic course using both sides of the Eno River and a foxoring course on the East side. The weather was hot but felt mild compared to the week we experienced before. We had nine participants. Seven tried the 2m classic course and five tried the foxoring course. The classic […]

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June 1st, 2019

New Registration and Store

We just went live with our new Registration and Store.

To register just go to the BOK Store and pick the event you want to attend. Then you can enter your information and choose the extra things you need, like a Finger Stick, extra maps or a whistle. The price will update as you add things. If you are a BOK Member you can check the box to get a $7 discount, or if a BOK Family Member you can select your extra free map.

More than one person registering, no problem. After you fill out your information and check your boxes click “Add to Bag”. Then you can make any necessary changes to the entry and click “Add More”. Each entry will show as a separate item. Create a separate entry for each person, or group going out together.

After you have paid you will receive a confirmation email. Print it out or show it on your phone at the event. More parks are not permitting payment at the event.

You can also purchase Finger Sticks, Whistles or Annual Memberships (Which expire on August 31st). Just add them to your cart before checking out.

May 27th, 2019

Open Radio-O/ARDF event at Eno River, Sun. June 2.

Update 1: If you’re doing the 2m Classic, you will be crossing the Eno River. Bring an extra pair of shoes for when you get back.
Update 2: It would help us if you could register before 4 PM today (Sat 6/1). Thanks.

We will have an 2 m classic course and a short foxoring course at the Eno River State Park Few’s Ford Access on Sunday, June 2. For more information about Radio-O/ARDF, see the BOK ARDF page. Starts 11:00 AM to 2:00 PM. We will have a class at noon. The course closes at 3:00 PM. Remember there is a $5 fee if you need to rent a receiver. Also, parking fills up fast at the Eno River State Park; car pooling is appreciated.

Open event with pre-registration: Newcomers welcome — you don’t have to be a BOK member. Here is a link to the BOK store where you can register. Soon after registering, we will send you an e-mail letting you know that we have reserved a receiver for you. If you are registering more than one entry after you press “Add To Bag” you can update the information on the form and make sure the correct boxes are checked, and then press “Add Another”. Do this as many times as you need for all your entries, and you can pay for it in one transaction.

Courses provided: There are two types of course, 2 m classic and foxoring.

classic white1 fox1.8 km
classic yellow2 foxes2.6 km
classic orange3 foxes3.9 km
classic green4 foxes4.6 km
classic red5 foxes5.4 km
foxoring8 controls2.7 km
May 22nd, 2019

ARDF Afternoon Practice

We had another ARDF 2m practice last Monday afternoon. Ruth, Joseph, and Imre participated. Imre and Joseph each set out a transmitter at 4:30 and Ruth joined us at 5:00. We then found the “other” transmitter and communicated by phone to make sure everyone found the transmitter they were hunting. Then we moved the transmitters so everyone could run another round. If we get more people we can set more transmitters. It worked quite well and we all had fun.

A couple of transmitter locations were easy to find – pick up the signal and follow it to the fox. (“Fox” is another ARDF term for transmitter.) Two of the locations proved quite challenging. Lots of reflections causing confusion when getting close to the fox.

We will be doing more of these practices. Send a message if you want to participate in our afternoon practices.