The tube in the center is the T21, a 6L6 offspring. A plain 6L6G should work fine.
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RETROTECHNOLOGIST?
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.
A major goal of this blog is to make information findable.
I try to use post titles that include the topic or device covered and to include links to further information. If you have anything to add, please comment on the post or e-mail me.
(e-mail update pending)
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.
A major goal of this blog is to make information findable.
I try to use post titles that include the topic or device covered and to include links to further information. If you have anything to add, please comment on the post or e-mail me.
(e-mail update pending)
PRACTICIONERS OF THE ART:
- ALL THINGS WIRELESS AND LETTERPRESS
- INDIANA HAMFEST CALENDAR, 2015
- DURENBERGER.COM (RADIO BRODCASTING)
- OLDENGINE.ORG
- THE RADIOTELEGRAPHER
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- Radiotelegraphy.net
- THE TELEGRAPHER
- THE TYPEWRITER PAGES OF WILL DAVIS
- THE STEAMPUNK WORKSHOP
- ROUGH AND TUMBLE ENGINEERS HISTORICAL ASSOCIATION
- AA9PW FCC EXAM PRACTICE
- MARITIME RADIO HISTORICAL SOCIETY
- THE CLASSIC TYPEWRITER PAGE
- W. R. SMITH: TELEGRAPH KEYS, CLOCKMAKING AND MODELMAKING
- W1TP TELEGRAPH & SCIENTIFIC INSTRUMENT MUSEUMS
- HISTORY OF TELEVISION
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SOURCES
- Hewlett-Packard Archive
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- Vibroplex
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- Modern Radio Labs
- PhoneCo
- Old Phone Works
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