Get a beeper with a variable tone -- you're less likely to "lose" it
amongst background noise. I found (heard) a Pratt Microbeacon a couple
hundred feet away, on a reasonably windy day, while I was walking into
the wind -- can you say wind noise in your ears?
Something sounded "wrong", so I paused and realized what it was. I then
spent another couple of seconds determining the direction and walked
right to the rocket.
I had a Pratt Microbecaon once. I lost it! 8-) A cornfield sucked it up
along with my Arreaux, never to be seen again.
Corn should be considered the #1 evil arch enemy my any rocketeer! The last
time I was forced in to a cornfield, the recovery was a success - thanks to
GPS. I woulda lost that one for sure without it.
Then please be so kind as to post the catalog number so everybody can
Do SOMETHING useful for a change.
I must have been totally confused by the consumer feedback.
"Bottom line is always remember- we graduate 9 times more lawyers in
this country than we do engineers- sooner or later they'll need more
courtrooms and there will be no one around to design and build them."
Jerry Irvine, Box 1242, Claremont, California 91711 USA
Opinion, the whole thing. <mail to: email@example.com>
Radio Shack; Mini Personal Alarm, catalog # 49-428
1. What's needed:
a. Radio Shack, Mini Personal Alarm, R>S catalog # 49-428
b. 3/16" drill bit and drill
c. #1 cross point screw driver
d. Lanyard material, (man rated parachute cord or kevlar cord)
f. Hobby knife for cutting lanyard to desired length.
2. Disassemble the unit by removing the two (2) screws, holding the unit
3. There are two halves, once the unit disassembled. Depending on the
material you decide to use for the additional lanyard, drill a hole in
the unit half that does not contain the guts of the unit, (I use
standard man rated parachute cord or 1/4" kevlar cord, both requires a
hole size of only 3/16", to thread the cord through). If you drill the
hole at the aft edge of the circle indent, it makes a neat place to
store the retaining knot, (refer to next step).
4. Once the hole is drilled, thread the lanyard cord through the hole
you drilled and make a retainment knot on the inside part of the lanyard
piece. You can safety the knot with a drop of fast CA glue, if desired.
Tuck the finished retaining knot into the circle indent and reassemble
the two halves of the unit together and install the unit in your rocket,
As a side note:
This unit uses the same 12vdc cigarette lighter battery used in Adept
altimeter units. I tested one of the alarm units and it was still going
strong after 6 hours, (to keep the noise from bothering anyone I taped
the hole and put the unit under a small bucket (:-).
I'll repost the instructions along with pictures to ABMR, as soon as I
get the pictures down loaded.
Try this, the unit is a little pricy, but it's a quality piece of work.
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