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Old June 16th 05, 11:20 PM
John Smith
 
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Here is an excellent and practical discussion of rough design and
practical use of can antennas, make sure to follow the link on the
bottom of the page...
http://www.turnpoint.net/wireless/an...coffeecan.html

John

"Anchor" wrote in message
news
Any suggestions on how to build a 2.4 GHz CW transmitter with a
microwave
oven magnetron and a 2.4 GHz "pringle" or coffee can style antenna?

There are tons of "pringle" or coffee can antennas or similar on the
web.
For example: http://flakey.info/antenna/waveguide or
http://www.turnpoint.net/wireless/an...coffeecan.html

I suppose one need only insert the magnetron antenna into the coffee
can
where one would normally mount the N-connector feed point.

A labeled diagram of a microwave magnetron can be found at:
http://www.gallawa.com/microtech/mag_test.html

I suppose the metal coffee can has superior micro shielding properties
relative to the aluminumized cardboard pringle can.

Would I be better off with plumbing copper drain pipe from the stray
RF
exposure perspective?

Since microwave magnetron use a half wave power supply, can I use two
magnetrons in the same coffee can powered from a single AC HV
transformer
with a pair of HV rectifiers to feed alternate cycles to the
magnetrons?

Greg, VE0ACR