Here is a site with lots of FREE books dealing with tube design. There
are old ARRL and Orr radio handbooks as well.

http://www.pmillett.com/tecnical_books_online.htm

The files are huge so you better have a high-speed (not dial-up)
internet connection.

Have fun - Roger

wrote:
Here is a site with lots of FREE books dealing with tube design. There
are old ARRL and Orr radio handbooks as well.

http://www.pmillett.com/tecnical_books_online.htm

The files are huge so you better have a high-speed (not dial-up)
internet connection.

Thanks, but I have two problems - I'm stuck using dialup, and most of
these books seem over my head. Interesting, nonetheless.

Ralph

"julian814" ) writes:
wrote:
Here is a site with lots of FREE books dealing with tube design. There
are old ARRL and Orr radio handbooks as well.

http://www.pmillett.com/tecnical_books_online.htm

The files are huge so you better have a high-speed (not dial-up)
internet connection.

Thanks, but I have two problems - I'm stuck using dialup, and most of
these books seem over my head. Interesting, nonetheless.

Unless you pay by the hour, it's doable with dialup. Do it late at
night so there's no disturbances, and hopefully less traffic. Be
selective, figuring out what you might find useful before downloading.

I have dialup, and I grabbed some of those books last year, using
this same method. It took time, but if you plan it right, it doesn't
get in the way. Just don't plan to be able to do much else at the
same time as the download.

Unfortunately, while I did record the times it took to download those
books I did download, I have no idea where I put that list.

Of those books, the 15th edition of THe Radio Handbook is likely
the best choice, since it's the most recent of the handbooks they
have there. Most of the books are more text books, and the 1941 ARRL
Handbook is likely going to use older tubes than you have, same with
the 1940 Radio Handbook.

Michael VE2BVW

Michael Black wrote:
"julian814" ) writes:
wrote:
Here is a site with lots of FREE books dealing with tube design. There
are old ARRL and Orr radio handbooks as well.

http://www.pmillett.com/tecnical_books_online.htm

The files are huge so you better have a high-speed (not dial-up)
internet connection.

Thanks, but I have two problems - I'm stuck using dialup, and most of
these books seem over my head. Interesting, nonetheless.

Unless you pay by the hour, it's doable with dialup. Do it late at
night so there's no disturbances, and hopefully less traffic. Be
selective, figuring out what you might find useful before downloading.

I have dialup, and I grabbed some of those books last year, using
this same method. It took time, but if you plan it right, it doesn't
get in the way. Just don't plan to be able to do much else at the
same time as the download.

Unfortunately, while I did record the times it took to download those
books I did download, I have no idea where I put that list.

Of those books, the 15th edition of THe Radio Handbook is likely
the best choice, since it's the most recent of the handbooks they
have there. Most of the books are more text books, and the 1941 ARRL
Handbook is likely going to use older tubes than you have, same with
the 1940 Radio Handbook.

Thanks, I'll give it a go. I work from 4 pm to midnight weekdays, so I
think I'll try this again tonight after work.


Ralph

Well, after much hair pulling and gnashing of teeth, I managed to
download the 15th edition of Radio Handbook last night. No straight
receivers that use tubes, though. Going to have to look at the math
section to see if there's some way I can work up a schematic of my own.
Thing is, math isn't my strong suit.

Also going to have a look at some of the older books. If worse comes to
worst, I know of a few places online where I can buy the tube that are
in the schematics I do have.


Ralph