Being an old HP uW SE, the 346 A noise source is 10 MHz to 18 GHz. You get that range for a mere $4000 but it is flat!
Dan Kahn
On Sunday, November 24, 2024 at 03:36:18 PM EST, wn4isx via groups.io <wn4isx@...> wrote:
Thank you!?
Several years ago the ARRL made Disney look like "let all our movies and cartoons be free."
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Remember when Disney went after daycares across the nation for showing VHS tapes of Disney cartoons?
My wife's nephew and niece daycare received one of the "you owe us a gazillion dollars."
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The ARRL went bonkers when someone released some of their 1950s handbooks in ?1990?.
I wonder how Internet Archive avoids serious copyright issues.
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I'd hate to be a popular author because dealing with copyright and the Internet would be whack a mole.
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It is better to use a LM317 or 338 instead of a variable resistor to control the light bulb.
And a 12V VW cabin bulb offers higher frequency noise output. A straight filament is better then a coiled filament.
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There are better VHF/UHF noise sources like commercial noise diodes which are rather expensive.
There are also "noise vacuum tubes." I have two in route, I have some doubts but I'll give them a try.
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