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Author Topic: Tom,Sideband eliminator  (Read 2462 times)
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AG5UM
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« on: March 07, 2020, 11:40:14 AM »
"TOM", K1JJ,
It seems to me you've become desperate for a new project to apply your skills.
(professional DSP audio systems,etc.)
How about something to completely eliminate all single-sideband signals when I'm trying to listen to AM !!
I know China probably already makes one for $5, with free shipping....
Anyway, you've still got more big-tubes than me, so keep up the good work.
73's
AG5UM
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W3RSW
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Rick & "Roosevelt"
« Reply #1 on: March 07, 2020, 12:19:21 PM »

Might mention the wobbulator.?
Single sjgnal after clearance..
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RICK  *W3RSW*
K1JJ
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"Let's go kayaking, Tommy!" - Yaz
« Reply #2 on: March 07, 2020, 12:23:37 PM »
Quote from: AG5UM on March 07, 2020, 11:40:14 AM
"TOM", K1JJ,

How about something to completely eliminate all single-sideband signals when I'm trying to listen to AM !!
73's
AG5UM

 Grin Grin   Hi Don,

Years ago I was sitting at a campfire with an old man. He said he was going to tell me the secret to Ham Radio happiness. He whispered "Isotrons, stacked" and then passed away. After a long search I finally figured out what he meant....  Isotrons somehow know the difference between AM and ssb signals.

T

* Isotron Rules!.jpg (64.1 KB, 800x600 - viewed 277 times.)

* Stacked ISOTRONS.jpg (38.22 KB, 480x640 - viewed 290 times.)
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Use an "AM Courtesy Filter" to limit transmit audio bandwidth  +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed.  Easily done in DSP.

Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."

There's nothing like an old dog.
AG5UM
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« Reply #3 on: March 07, 2020, 02:36:03 PM »
I thought you would say, there is SDR/software out there that can distinguish a signal with,
a carrier and both sidebands,etc. etc. and eliminates everything else.
I was'nt expecting the answer is the old wobulator sig-gen connected to stacked Isotrons...
That sounds much more fun.
73's
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WBear2GCR
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Brrrr- it's cold in the shack! Fire up the BIG RIG


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« Reply #4 on: March 10, 2020, 01:41:51 PM »


Such shaftware will exist 10 seconds into the future, from now... but what fun would that be?
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_-_- bear WB2GCR                   http://www.bearlabs.com
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