Steve G0XAR
Once outside a country's territorial limits the regulations on
unattended beacon transmissions
might be different.???
:-)
The US also has 2-liter soft-drink bottles.? They are handy for a
number of ham related projects,
from using the plastic to make capacitor dielectric, to use as
housings for electronics that need
to be protected from water, insects, and small children.
Since it is relatively easy to generate hydrogen at mains water
pressure by using a sealed
U-shaped electrolysis vessel, there is also the possibility of using
very thin plastic bags as balloons
for lifting your own atmospheric beacon into the path of birds and
flying insects.? This has
potential for traversing both land and oceans while emitting QRSS
signals advertising it's location,
altitude, and other environmental information.
Arv
_._
On 08/01/2011 02:41 AM, Stephen Farthing wrote:
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Hi Stan,
That is a very interesting proposition you have there.?
On our kits we get great stability without using any
ovening of the crystals. If you are burying the whole plot
in the back yard I suspect you are going to subject it to
more temperature variation than the average shack. So some
sort of ovenisation might be required. The only other
problem i can think of is with all that packaging and
paint how will you get the thing on frequency? I suspect
the packaging will affect the output frequency so you need
some way to tune it without removing it from the package.?
It sure will puzzle any?archaeologists who dig up your
garden in a few hundred years time if it is still there.?
Arv is not the only one who was thinking about a QRSS
marine beacon. A friend and I were thinking of one. The
case was going to be a 2 liter (not sure what that is in
American) transparent coke bottle. Power as many C Cells
as we could get into the bottom to act as power/ballast.
Possibly solar panel top up, GPS linked to microcontroller
to TX location using QRSS.Antenna some sort of loaded
vertical. I did ask our equivalent of the FCC if we could
do this but they said no as unatteneded beacons are not
allowed. May be?be you guys have different rules...?
73s Steve G0XAR
--
It is vain to do with more that which can be done with
less.
