Radio Location Gear

Mark620 · 01-03-2009, 04:22 PM

My build on this project is completely done and it is calibrated and operational
This gear is for finding the surface position of specific cave locations.
The transmit loop has to be perfectly level inside the cave.

The AC magnetic field generated by this Beacon is safe for people but will quickly erase
the magnetic stripes on credit cards and phone cards, floppy disks, audio and video tapes.
It could damage computer hard drives, digital cameras and all storage media. Keep all
electronic equipment at least 10 feet (3 meters) away from the working loop. Also keep
the Receive loop at least 10 feet away to prevent Receiver damage from high voltage.

Transmit Loop ready to work - but not transmitting
Note: large loop is conneced & small loop shown is an alternate.
Only one is required. The larger loop is more powerful.

Packaged up & ready to cave

Recieve loop set up and working

close-up of working reciever

close-up of reciever

I finally tested the gear in the field:
Day one...did one location
it did not go so well
I had trouble locating the exact center and never actually found it but I was within a couple of feet.

Day Two...did 2 locations
it went fabulously
Located both spots

My gear should be able to locate spots >600 feet with out any problems. I do require at least one helper on the surface and if they can survey (it is very hard to stay at the exact elevation on a hill), I can calculate depth by multiple methods.

rhino56 · 01-04-2009, 02:03 PM

wow that is awesome, congrats mark

Nettles · 01-31-2009, 03:35 PM

Never been caving, what does that do? My guess is find the mouth of the cave that you entered from?

Mark620 · 02-02-2009, 09:51 PM

Quote:

Originally Posted by Nettles

My guess is find the mouth of the cave that you entered from?

Nope, It finds the spot outside the cave directly over the transmitter.

Uses:
1. find a spot to make a new opening.
2. figure out overburden for construction projects.
I can measure the distance through the ground to the transmitter
and then measure the height of the cave inside (take the difference)
3. Find out who's land is above a cave.
4. Figuring out where to drill for water - tap into a water supply in a cave
5. etc.

Nettles · 02-11-2009, 08:28 PM

Thanks Mark, I never knew there was so much to caving honestly. We don't have caves around here which is probably good because I would've been unsafe in them

rhino56 · 02-21-2009, 09:40 AM

wow you could mess up some stuff in an office with a lot of computers

01-03-2009, 04:22 PM	#1 (permalink)
Mark620 Administrator Colonel Join Date: Oct 2004 Location: TN Posts: 3,047	Radio Location Gear My build on this project is completely done and it is calibrated and operational This gear is for finding the surface position of specific cave locations. The transmit loop has to be perfectly level inside the cave. The AC magnetic field generated by this Beacon is safe for people but will quickly erase the magnetic stripes on credit cards and phone cards, floppy disks, audio and video tapes. It could damage computer hard drives, digital cameras and all storage media. Keep all electronic equipment at least 10 feet (3 meters) away from the working loop. Also keep the Receive loop at least 10 feet away to prevent Receiver damage from high voltage. Transmit Loop ready to work - but not transmitting Note: large loop is conneced & small loop shown is an alternate. Only one is required. The larger loop is more powerful. Packaged up & ready to cave Recieve loop set up and working close-up of working reciever close-up of reciever I finally tested the gear in the field: Day one...did one location it did not go so well I had trouble locating the exact center and never actually found it but I was within a couple of feet. Day Two...did 2 locations it went fabulously Located both spots My gear should be able to locate spots >600 feet with out any problems. I do require at least one helper on the surface and if they can survey (it is very hard to stay at the exact elevation on a hill), I can calculate depth by multiple methods. __________________ On May 20th 2008, a list of the names of over thirty-one thousand scientists (of which 9,000 are Phds), who refute that man made CO2 has caused global warming, was released. My Heatware Yes, I did just crawl out from under a rock ! I am a Caver !

01-31-2009, 03:35 PM	#3 (permalink)
Nettles Moderator/ COD4 Addict First Lieutenant Join Date: Aug 2005 Location: SFA Posts: 1,671	Never been caving, what does that do? My guess is find the mouth of the cave that you entered from? __________________ HEAT

02-11-2009, 08:28 PM	#5 (permalink)
Nettles Moderator/ COD4 Addict First Lieutenant Join Date: Aug 2005 Location: SFA Posts: 1,671	Thanks Mark, I never knew there was so much to caving honestly. We don't have caves around here which is probably good because I would've been unsafe in them __________________ HEAT

01-04-2009, 02:03 PM	#2 (permalink)
rhino56 Administrator General Join Date: Feb 2006 Posts: 6,813	wow that is awesome, congrats mark

02-21-2009, 09:40 AM	#6 (permalink)
rhino56 Administrator General Join Date: Feb 2006 Posts: 6,813	wow you could mess up some stuff in an office with a lot of computers