ARDF World Champs Bulletin 4

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Kenneth Harker

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Aug 23, 2022, 4:12:10 PM8/23/22
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For those attending. Some interesting things I notice:

* In the Sprint, W35 and M50 only have to find six transmitters (three in each cycle). I don’t remember these classes ever being expected to find so few.
* In the Classics, the M50 category is expected to find all five transmitters both days, whereas the M40 category is only expected to find four. M60 is required to find four transmitters both days.

73 de WM5R

Bulletin_4_20th_IARU_ARDF_World_Championships.pdf

Vadim Afonkin

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Aug 23, 2022, 5:28:43 PM8/23/22
to Kenneth Harker, ARRL ARDF Committee, ARDF USA
Hi Ken,

Validated with organizers - this is not a typo. It's is indeed true.

Explanation I received M50 and M40 will run different bands, but still does not sound right for me.

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Charles Scharlau

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Aug 23, 2022, 5:35:40 PM8/23/22
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Having designed courses for the USA championship several times now, I've come to realize that the number of foxes to find doesn't tell the full story. Here, of course, we've got longer courses overall for M40 competitors, so even finding all five foxes the shorter M50 courses will probably not be as demanding physically. But even when two age/gender categories are out on the same course, and are required to find the same number of foxes, the length and difficulty levels can be quite different between the two. Not only might one fox be located a much greater distance away making one category's course longer, the course layout for one might be much trickier to navigate due to terrain, elevation, propagation (on 2m), or just the difficulty involved in determining the correct order.

With more transmitter combination possibilities provided by sprint and foxoring, the total number of foxes can be even less indicative of overall course difficulty. But those sprint numbers are surprising to me. It will be interesting to see the courses. Perhaps they will reveal the reason for the small fox totals for those categories.

-Charles

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Vadim Afonkin

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Aug 23, 2022, 5:44:31 PM8/23/22
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Well, finding 5 foxes and selecting right order for 5 foxes is always more difficult compared to 4, no matter of the length of the course.

With shorter course it's even more difficult to select right order.

Charles Scharlau

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Aug 23, 2022, 5:48:24 PM8/23/22
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We can't expect M50 competitors to be more physically capable, but their extra decade of experience should help them figure out a more difficult puzzle than those young M40's can handle. 😉

Vadim Afonkin

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Aug 23, 2022, 5:51:12 PM8/23/22
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If I follow your logic,same applies to M80?

😁

Let em find 10!

😁

Charles Scharlau

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Aug 23, 2022, 5:55:30 PM8/23/22
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M80's, when that category exists, will need to find ten foxes all inside the start exclusion zone.🙂

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