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Dave-N2DS
PostPosted: Mon Jan 30, 2012 5:59 am 
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Location: Beaver Dams, NY
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Hope this is useful. From Radio Broadcast Magazine, 1923

Dave

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Piter_
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PostPosted: Mon Jan 30, 2012 7:09 am 
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Super.
:D
May i crosspost it?
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journeyman
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PostPosted: Mon Jan 30, 2012 10:06 am 
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Location: Naarden, Netherlands
But I use theremin tuning with my regenerative mini-tube/loop antenna rig:
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:shock: .
It comes in handy: Just run slighly over oscillation, then move hand to loop to tune, and get a 'superreg' sensitivity at exactly the right frequency.
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dosco
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PostPosted: Mon Jan 30, 2012 12:22 pm 
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Location: MD
Haha, reminds me of when I was a kid, pre-cable TV.

Son. Please adjust the antenna.

Move your arm to the left. Right. Left again. OK, good, go sit down.

Wait 2 minutes.

Son. Please adust the antenna again.

Etc.

As I got older, I experimented (unsuccessfully) with various aluminum foil "additions" to the antenna in order to preclude this process.

Signal quality with cable TV, many years later, was outstanding.
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KR1S
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PostPosted: Mon Jan 30, 2012 1:20 pm 
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Location: South Florida
Useful for when you want to get away from radio for a while. :lol:

73,

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battradio
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PostPosted: Tue Jan 31, 2012 1:40 am 
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Location: near St. Louis MO.
You could always come back as a ghost and haunt the radio , no body no capactance . :twisted:

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Mark
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journeyman
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PostPosted: Tue Jan 31, 2012 7:03 am 
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Makes me wonder anyway: In another thread they discuss hula-hoop loop antenna's. If I spin those fast enough while listening, could it act as a BFO?
( Just need to worry about how to keep the wires untangled, but at least keeps me from getting fat while listening). Makes it really a 'one active device'! Somewhat like this lady:
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Looks like she is also using hand capacity.
Michel
( Sorry for hijacking your thread, Dave) :wink:
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Georg
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PostPosted: Tue Jan 31, 2012 9:52 am 
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Here is the British answer to body capacity:

http://www.youtube.com/watch?v=Sm3_qEMTdc4

Regards
Georg


Last edited by Georg on Wed Feb 01, 2012 1:02 pm, edited 1 time in total.

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KR1S
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PostPosted: Tue Jan 31, 2012 1:48 pm 
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journeyman wrote:
Makes me wonder anyway: In another thread they discuss hula-hoop loop antenna's. If I spin those fast enough while listening, could it act as a BFO?

If you glued a magnet to the edge of the hoop and gyrated just right, you could spin the magnet through a coil of wire and generate electricity to power the radio. :?

73,

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Piter_
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PostPosted: Fri Feb 03, 2012 10:49 pm 
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http://youtu.be/F-8RItOZE30
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SWsenior
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PostPosted: Sat Feb 04, 2012 6:44 am 
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journeyman wrote:
Makes me wonder anyway: In another thread they discuss hula-hoop loop antenna's. If I spin those fast enough while listening, could it act as a BFO?
( Just need to worry about how to keep the wires untangled, but at least keeps me from getting fat while listening). Makes it really a 'one active device'! Somewhat like this lady:
Image
Looks like she is also using hand capacity.
Michel
( Sorry for hijacking your thread, Dave) :wink:


Wonder if that hula hoop is for sale?

SWsenior
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