Did a quick search, seems the spelling is best made a little different:
A ¡°ditty bopper¡± was a slang term for a Morse code intercept operator, MOS 05H in the Army. Most were assigned to the ASA (Army Security Agency)?...
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Good of you to try to help your friend like that, give him something to do other than stare at the wall all day.
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I agree that power requirements into our gear should not be so fussy.? Next board rev of the QMX
should be laid out for an LM2940CT-12. or LM2940CT-9.0 (have a dropout voltage of 0.5v at 1a).
For now, easy enough to add one as a lump in your power supply cable,
include the caps suggested in the datasheet.
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Jerry, KE7ER
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On Wed, Nov 20, 2024 at 05:49 AM, Reginald Beardsley wrote:
I normally use one of my many, very good linear lab supplies. I was readying a 2nd QMX I bought to lend to an old USAF diddybopper living in a memory care facility. An adjustable lab supply was not a practical PSU in his situation, particularly as I'd have no way of preventing the voltage from being changed by accident.? There is an old proverb among the Unix greybeards. "Be tolerant of what you accept and strict about what you produce." I see no reason that should not apply to power inputs for QRP kit.
