Free Tech Manuals

[Structo]

Many of you probably know this site but here are a bunch of old tube and design manuals that you can download for free.
Not a real fast server but hey, they're free!

http://63.227.91.114/Common/Manuals/Tube_Manuals.php

[Andy Le Blanc]

great find, your awesome. I've been looking for some of the RCA rc- for a while.

[C Moore]

Good Heavens, I did not realize there were tubes that bore the name of Lee Deforest.......
That's a cool sight.
Thank You

[Structo]

Yeah there are some cool old manuals there.

This picture is from the RCA RC-12 book.

I love it!

You can see the various materials used in making tubes, no wonder the EPA has outlawed just about any chance of US manufacturing of vacuum tubes.

[Andy Le Blanc]

If china is willing, and there's a market......

[Torquil]

First post!

Thanks for the link. I'll have a look at the "Radiotron Designer's Handbook", with much interest.

Torquil

[rfgordon]

Very cool books. Thanks a million for the link!

[rfgordon]

I love the opening sentence of the 1967 RCA manual:

"The electron tube is a marvelous device."

Couldn't agree more!

[rfgordon]

OK, I learned something already. On page 93 of the 1967 RCA manual, figure 126 shows why some Hammond transformers have a center tap on the rectifier filament winding--that can be the HT output tap, rather than one of the cathode pins.

Must fill brain with more tube stuff.........

[Andy Le Blanc]

I think its the 47 rca has a data sheet on 12ax7. when did fender start using them?
It was a tech boom between 38 and 48, the pre WWii vrs the post war leap.
That early telefunken book shows many low voltage radio tube, some miniature.
The early German tactical and technical successes go hand in hand.

[morcey2]

Yeah there are some cool old manuals there.

This picture is from the RCA RC-12 book.

I love it!

You can see the various materials used in making tubes, no wonder the EPA has outlawed just about any chance of US manufacturing of vacuum tubes.

I think I'm going to have that picture silk-screened on a t-shirt.

[Structo]

I bought this one a couple years ago.

AES has several other designs.

[img:311:500]http://www.tubesandmore.com/cemirror/inv/G-852.GIF[/img]

This one is cool.

[img:331:500]http://www.tubesandmore.com/cemirror/inv/G-869.GIF[/img]

http://www.tubesandmore.com/scripts/fox ... E02=SHIRTS

[morcey2]

I bought this one a couple years ago.

AES has several other designs.

[img:311:500]http://www.tubesandmore.com/cemirror/inv/G-852.GIF[/img]

This one is cool.

[img:331:500]http://www.tubesandmore.com/cemirror/inv/G-869.GIF[/img]

http://www.tubesandmore.com/scripts/fox ... E02=SHIRTS

Yep. got both of those! And the 'evolution of tube envelopes' version that they have also.