Using of avalanche beacons to find the conjunction of caves

[Martin Sluka]

http://ukcaving.com/board/index.php/topic,10430.0.html

[Amazingracer]

Interesting idea.

[karst97]

Many years ago some cavers in our grotto used an avalanche beacon to find where a diggable entrance hole was located. Worked fast & easy. This was in a relatively shallow lava tube.

[Squirrel Girl]

http://ukcaving.com/board/index.php/topic,10430.0.html

I tried to follow the links. But I found one broken link, one link to UKcaving that didn't say much, a link to an Italian page, and a link to your page. Plus one link to the English translation to your page that had such a lousy translation, I couldn't follow what it was trying to say. I'd be interested in learning more. Can you help us English-only speakers (Ok, I know a little Spanish, but that won't help here, I don't think).

[Martin Sluka]

[Can you help us English-only speakers (Ok, I know a little Spanish, but that won.

Correct link to original article: http://www.sss.sk/s.php?t=1&m=201&id=200
Google translation: http://tinyurl.com/39a7bv5

Short abstract: The avalanche beacons were used several times to detect relative position of cave passages or of cave passage and surface. The detection described in the article was successfully checked by physical connection of both caves. There is a practical experience to divide the distance measured by beacons by factor of two.

[Squirrel Girl]

[Can you help us English-only speakers (Ok, I know a little Spanish, but that won.

Correct link to original article: http://www.sss.sk/s.php?t=1&m=201&id=200
Google translation: http://tinyurl.com/39a7bv5

Yeah, I found those links in the link you put in this thread. But I can't read the original non-English and here's the google translation of the first sentence:

When I Jano Šmoll few days ago, in a short telephone interview to ask Javorinka in the High Tatras and after I explain what and how, I forget to recall that you are ignorant, do not write nothing, I had to nod to him.

Not only can I not understand that, I can't even make heads nor tails of what it might be trying to say. I scanned the rest of the document, and I just couldn't figure it out.

Short abstract: The avalanche beacons were used several times to detect relative position of cave passages or of cave passage and surface. The detection described in the article was successfully checked by physical connection of both caves. There is a practical experience to divide the distance measured by beacons by factor of two.

Can you, briefly, explain how the avalanche beacons detected the relative position of the cave passage?

Thanks!

[Martin Sluka]

Can you, briefly, explain how the avalanche beacons detected the relative position of the cave passage? Thanks!

Exactly as in case of skier under avalanche. The avalanche beacon detects of electromagnetic field around transmitter. The rescuer has a beacon too and he is able to see the direction and distance to man covered with snow. In case of cave one beacon is used in mode "victim" and second one as "rescuer". The max distance is about 40 m showed on display of beacon (+- 20 m practically).

[Squirrel Girl]

So it's like cave radio, but an easily available piece of hardware that doesn't require a degree in EE to buy and use? Just that it isn't powerful enough to go through too much rock?

[Martin Sluka]

So it's like cave radio, but an easily available piece of hardware that doesn't require a degree in EE to buy and use? Just that it isn't powerful enough to go through too much rock?

Exactly!

[Squirrel Girl]