Promised a week ago, here at last, a fine example of breadboard construction:The tube in the center is the T21, a 6L6 offspring. A plain 6L6G should work fine.
I think you'd be surprised -- it's crystal-controlled (round widget, back row, center) and the crystal-to-grid lead is pretty short.
The usual fix for a microphonic transmitter -- and some of the "power VFO" ones were bad that way -- was to put it on another table, on typewriter pad if need be. Or even hang it on the wall!
I recognize that one! It's from the 1940-ish edition of the Radio Amateur Newcomers Handbook (from the publishers of "Radio" - Frank Jones & friends). I'd now the exact date but my copy has the covers and first few pages missing. It was my grandfather's.
I KNEW THE LOSS WAS SERIOUS WHEN I SAW THE NEWSPAPER JUNK THEIR OLD PRINTING PRESSES. Seeing it myself made it real. Ripped the heart right out of that building and that paper. It's not why newspapers are dying but it is one reason why they die largely unmourned. I'm pushing back. Typewriters, Dial Telephones, Hand Tools, Old Amateur Radio Gear, Telegraph Keys, Analog Volt Ohmmeters, Vacuumatic Coffeemakers, Slide Rules, Fountain Pens, etc.: I have 'em. I use 'em.
It's not political. There are other places for that. People who love old technology can be found all across the spectrum. Let's concentrate on what we have in common.
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Very pretty, all those right angles and bus-bar looking wires. But what happens if the unit is thumped? Gonna be interesting when things vibrate.
ReplyDeleteI think you'd be surprised -- it's crystal-controlled (round widget, back row, center) and the crystal-to-grid lead is pretty short.
ReplyDeleteThe usual fix for a microphonic transmitter -- and some of the "power VFO" ones were bad that way -- was to put it on another table, on typewriter pad if need be. Or even hang it on the wall!
I recognize that one! It's from the 1940-ish edition of the Radio Amateur Newcomers Handbook (from the publishers of "Radio" - Frank Jones & friends). I'd now the exact date but my copy has the covers and first few pages missing. It was my grandfather's.
ReplyDelete-Larry/NE1S