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Author Topic: Build something unique - Some thing to brag about from junk  (Read 1277 times)
AK0B
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Posts: 267




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« on: October 21, 2017, 10:39:40 PM »

Since we have stopped watching football on Sunday afternoon.  What oh what can a ham do. What is the strangest thing you ever built a Qrp rig in.  Rig defined as either a transmitter, receiver or transceiver. Let’s say we will also allow it to be a keyer or antenna tuner. 

Now we desire our device to be something incredible, unique right out of this world. You know something we can talk about on our Qso between now and Christmas.  Perhaps a little bear with a pair of red led eyes. Or rocket ship going to Mars.  Or garden solar light that also becomes our power source. Or the old soup can in the trash can.

Where can we find such an enclosure?  Why in the kid’s junk box, antique store down the road, or perhaps at the dollar store or goodwill.  Now we want it small so we can post its picture on the web. Perhaps limit the size to equal or be less than 6 inches square.  We already know Qrp fans are cheap so we don’t want to spend very much money.  Who can prove they are the cheapest guy in the group.

Maximum ten dollars seems like a lot. Yes it has to be QRP.  Don/t cheat.

So here is the challenge -- small, unique, must work, cost pennies and be something to brag about on our next Qso, or at next club meetings or around the coffee pot tomorrow at work. And were proud to post a picture of our fabulous creative design for others to be a shamed they didn't attempt the challenge.

SO go to the starting line, the pistol goes bang and we are all off running. Smiley It has to be finished before Saint Nick climbs down your antenna mast.

Stan AK0B
 
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VK3YE
Member

Posts: 227


WWW

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« Reply #1 on: October 22, 2017, 04:11:42 AM »

Hand-cranked 7 MHz CW QRP transmitter

https://www.youtube.com/watch?v=ARhiSUl8-5w
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Peter VK3YE

TOP-SELLING RADIO BOOKS: 'Minimum QRP', 'Hand-carried QRP antennas' & 'Getting back into Amateur Radio'. 
Paperback and ebook editions. See http://home.alphalink.com.au/~parkerp/vk3yebooks.htm or search titles in Amazon.
WB6BYU
Member

Posts: 17046




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« Reply #2 on: October 22, 2017, 09:02:55 AM »

A local club had a home-brew telegraph key competition one year.  Entries included the usual
hacksaw blades, a rather elegant serving spoon bolted to a wooden base, a construction of
Lego blocks, etc. 

I found a pink plastic toy bear with a squeeze tummy that made noise.  I removed the noise
maker and attached a plastic tube, at the other end of which was a partially-inflated balloon
mounted beside a microswitch.  When the bear's tummy was pressed, the balloon expanded
and operated the switch, keying the rig.  By getting the right amount of air in the balloon and
switch spacing, it sent reasonably good code at 20 WPM.
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KA0USE
Member

Posts: 13




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« Reply #3 on: November 15, 2017, 06:18:35 PM »

A local club had a home-brew telegraph key competition one year.  Entries included the usual
hacksaw blades, a rather elegant serving spoon bolted to a wooden base, a construction of
Lego blocks, etc. 

I found a pink plastic toy bear with a squeeze tummy that made noise.  I removed the noise
maker and attached a plastic tube, at the other end of which was a partially-inflated balloon
mounted beside a microswitch.  When the bear's tummy was pressed, the balloon expanded
and operated the switch, keying the rig.  By getting the right amount of air in the balloon and
switch spacing, it sent reasonably good code at 20 WPM.

cute! give the bear a callsign.
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