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Today I was at the BARA Amateur Radio Auction and a "2m Beer Can Antenna" was one of the items for sale.
What is a "Beer Can Antenna"?
They can be made from many different types of cans -beer, beans, etc. The auctioneer, Jim K2ZO, shared a story of his days in the military where they made a 20m vertical out of beer cans from a night of entertainment and the base security would not let them keep it assembled for too long.
It sold for $7 I think! The price was driven up to get us to the next item on the auction block.
What you can not see in the picture is that 4 radials attach to the PVC base and were removed for ocular safety. For the most part the "beer can" antenna is a 1/4 ground plane antenna electrically.
This is a much smaller version for 2m compared to Jim's 20m one and some of the features include:
The theory makes sense to me and some quick research turned up a thread on Radioreference.com talking about this type of antenna.
Looking for an antenna project?
This may be worth some brave soul experimenting with. Looks to be about a 6 pack for 2m (suitcase for HF) of your favorite beverage or a sale on canned green beans will get you on your way!