Friday, May 19, 2006

TIME FLIES.....
(when you're swamped with work)
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I'd hoped to have my International Crystal interview in the bag by now, but I've re-discovered the joyless feeling of working 3 weekends in a row (the 4th is soon to follow). But just to wet your appetite, consider that ICM not only made crystals, and radios, but a multitude of accessories like external S-Meter kits, base and mobile antenna's, swr meters, speaker cabinets, squelch kits, and much, much more! Let's all hope I get some free time to continue my research and of course, the interview.
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I'VE HAD MANY REQUESTS
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To put my "what is sideband" page back up, but to tell ya the true, I lost the photos! So....digging into my pocket, I came up with enough change to do it again -
As you can see, the picture on the right is an oreo cookie which represents one channel. The white filling is the "Center Slot", while the black cookies are the sidebands.
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On AM communications all of your output power is used by the whole cookie - not very efficient, as the 4 watt output is spread out from the lower sideband, and the center slot, and the upper sideband.
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Well, one day someone came along and thought to himself: "Hmmm, what if the output power could be funneled to just on of the sidebands? The rig would seem stronger, while keeping within the FCC regulations"
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So that's exactly what happened - they found a way to switch between AM, Lower Sideband, and Upper Sideband. In our example to the right, you see one sideband which now takes the 4 watt output, multiplies it by 3 for an effective RF output of 12 watts!!And hopefully, thanks to Nabisco, you have a better understanding of single-sideband.
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