ARDF Training Week Feb 17-25th

Filed under: Latest News,Next Events,Radio Orienteering by Joseph on February 6th, 2018


Details for Sunday, Feb. 25th

  • Noon – 3pm
  • Umstead South
    Amphitheater near the bathrooms in the main parking area in Umstead Park on the I-40 side of the park.
  • 5-6k score course with 5 controls
  • 80 meter band
  • Beginner instruction throughout the event

Report for Saturday, Feb. 24th

Illia set another challenging championship level 80 meter classic course.  (Note: “80 meter course” references the 80 meter frequency band, not the length of the course.)

We had perfect weather and a 6 new people showed up for their very first Radio-O course and 6 regulars came as well for a record setting 12 people at one of our training events.  Patrick’s transmitters worked flawlessly throughout the event, and Joseph used his new 20′ pole to set the beacon antenna.  With all the teaching and talking we didn’t finish up until 4pm.

Everyone happy after a successful event
(Horses and the PNC Arena in the background)

We have plenty of brand new high quality receivers for you to use.
Bring your own headphones. 
(We have headphones you can use but I think you will prefer your own.)

We will have beginners instruction at every event.

Here is the week’s schedule. (Event descriptions below.)  Please register for events you plan on attending.  You can submit one form for multiple events if you want to plan ahead, or submit the form each time you plan to attend a single event if you want to stay flexible.

BOK ARDF Training Week February 17-25, 2018
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  4. Check the events you are attending
  5. If you change your plans please return and remove your registration here. Be sure to check which events you want to be removed from.
  6. Please answer the question to prove you are human.

Classic 80m and 2m events consist of 5 controls.  All the transmitters are on the same frequency and each transmitter turns on for 1 minute and off for 4 minutes, then the sequence repeats.  To qualify you only need to get 1 transmitter, the beacon, and finish on time.

Sprint course has 2 sets of 5 controls.  Each set has its own frequency, and one set beeps faster.  Each transmitter is on for 12 seconds and off for 48 seconds.  You find one set, punch in at the beacon, get the second set and finish.  The beacon has its own frequency and is on continuously.

FoxOring course is a Score course, so you can take the controls in any order.  Control locations are  marked on the map, and the transmitter is within 50m of the the center of the circle. You orienteer to control location, however when you are about 50m from the transmitter you can hear the signal, and use your radio receiver to locate the transmitter without going to the circle location.  You punch in at the transmitter, not the location on the map.  (Usually there is no flag at the location marked on your map, however at this event there will be a flag at the marked location, but don’t punch in there, punch in at the transmitter.

Demonstration course: Two transmitters on different frequencies are on continuously.  Course length about 300m.

BOK has 7 high quality 80 meter receivers to loan out at the events, so if you haven’t tried it before be sure to try it out at the Open event and then attend some of the others.

Report on Saturday, Feb. 17th 80 m classic

Our first event was a success.  We use Patrick’s transmitters and everything went off with only one tiny hitch… the beacon (the transmitter at the finish that stays on all the time) went off for a while when the antenna got disconnected accidentally.

There are two types of receivers for the 80m band.  The “loop” and the “ferrite rod”, and while they work the same way the loop type has a strong signal when it is held sideways, and the rod type picks up the strong signal when it is held frontways.  Unfortunately Harold learned on the rod type, but was using our new loop type at the event.  The unfortunate result was that while he was navigating close to the controls he kept circling the transmitter and was unable to find one.  We felt terrible that he had this frustrating experience, but his spirits were still good and he is ready to try again tomorrow.

Report on Sunday, Feb. 18th FoxOring event

Dave Waller put on a great event open orienteering event at Eno River.  He set out a FoxOring course where you orienteer to a control circle on the map and then use your receiver to locate the very low power control within about 40 meters from the circle center.  I am very happy to report that Harold found all the controls using our new “loop” receivers after his frustrating lesson on Saturday.

Report for Monday, Feb. 19th – sprint

We had a small group in the cold fog at Schenck on Monday.  We learned that Sprints are hard!  Each receiver is only on for 12 seconds so the whole set of 5 transmitters repeat every minute.  It is difficult to locate a transmitter in 12 seconds! (But at least you don’t have to wait long for it to come on again.)

Report for Tuesday, Feb. 20th – 2 sprints

We had two sets of sprints today.  After everyone completed their sprint Illia moved the controls and we went out for a second sprint.

Report for Wednesday, Feb. 21th  Classic 80m

On Wednesday we had an excellent 4km long 80 meter Classic Radio-O event at Schenck Forest.  Afterward Illia analized our splits and routes and suggested techniques to save time and complete the course more efficiently.

Report for Thursday, Feb. 22nd

We had another successful 80 meter classic event at Carolina North Forest.  We had our first “beginner” show up.  David Waller decided to give it a try and went out with some confidence since he had made the map.  After a successful run he returned within the time limit after finding one control and the finish – this is the requirement for a successful run.  Typical of many ARDF events we had a technical delay to the start which resulted in the last finisher returning just at sunset and the control pickup finishing in the dark.  Another problem with finishing near sunset is all the amateur radio code chatter which picks up when the propagation improves because the reflection from ionosphere picks up after sunset (and presumably Hams get home from work).

Report for Friday, Feb. 23rd

The sprint at Bond Park went well and taught us (again) that sprints are hard to do in the optimum order without standing around and waiting for the signal to come back in another 48 seconds (which seems a lot longer than it is).  These were very short courses so we ran them a second time to correct our original mistakes.


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