NJ7P Tube Database Search
- General guide to tube specifications online.
- http://www.nj7p.org/Tube.php

Ake's Tube Data
- Information about electron tubes, and valves, from many parts of the world.
- http://www.akh.se/tubes/

The Vacuum Tube Page
- Roy Schmaus presents tube information, and articles about the R1155 receiver.
- http://www.ee.ualberta.ca/~schmaus/elect/tdex.html

PAE
- Audio Tube Data from Italy. Comprehensive site with a lot of very useful information.
- http://digilander.libero.it/paeng/devices_frame.htm

AAVT
- Information on the 6L6 look-alike, and where to get the last remaining tubes.
- http://elektronenroehren.de/avvt/html/avvtclub/

About the 304TL Family
- Tube Data for the 304TL and other similar tubes.
- http://www.alumrocktech.com/304tl.shtml

Shortwave Transmitter Tubes
- Guide to tubes used in shortwave broadcast transmitters with links to and information about manufacturers, rebuilders and suppliers of such tubes.
- http://www.tube.be

Tube Data, Theory and Links
- From J.W. Kwang in Korea
- http://tubesall.hihome.com/tube.htm

Andy M1EBV
- Valve data includes various types which may be used in the Racal RA17L HF receiver.
- http://www.pamandandy.demon.co.uk/valves/index.html

Hello, Mister Valve!
- Some great tube history and data!
- http://www.ominous-valve.com/tubes.html

Audiotubes.com
- Brent Jessee Recording Tube Sales and information. Plenty of data and articles here too.
- http://www.audiotubes.com/

WA2ISE sub-miniature tubes
- Pencil tube data and pin-outs.
- http://pw2.netcom.com/~wa2ise/radios/penciltubes.html

Triode Electronics
- Tube data and audio amplifier schematics online.
- http://www.triodeel.com/tubedata.htm

Military VT Tubes
- Frederick W. Chesson presents one of the best military VT- tube to commercial tube conversion tables.
- http://pages.cthome.net/fwc/VT.HTM

CPI Eimac Power Tubes
- The site has some technical data including a reprint of the old text The Care And Feeding Of Power Grid Tubes which used to be given away by Eimac.
- http://www.cpii.com/eimac/index.html

JMH's Virtual Valve Museum
- An extensive collection of pictures and information of old, unusual, and unique vacuum tubes.
- http://www.tubecollector.org/

Electron Tube Datasheets
- From the WPS Archives Datasheet database, 1958 - 1961
- http://www.wps.com/archives/tube-datasheets/

VT52
- Tube audio projects and datasheets
- http://www.vt52.com/

Vacuum Tube Theory
- A huge site with lots of useful information.
- http://www.du.edu/~etuttle/electron/elect27.htm

The 807 Tube
- Great WW2 era RF transmitting and audio power tube.
- http://www.rod.beavon.clara.net/807.htm

More Russian Tube Data
- Online data for many tubes.
- http://www.nd2x.net/tube-1.html

Russian Tube Data
- Tube data book online - Main Index.
- http://klausmobile.narod.ru/td/indexe.htm

Franz Hamberger Tube Data
- Data for electron tubes from Berlin in Germany available in both English and Deutsch.
- http://www.ginko.de/user/franz.hamberger/#tubes

Dr. Tube
- Tube datasheets on-line.
- http://www.drtube.com/tubedata.htm

Frank's Electron Tube Data Sheets
- Type index has many useful pages listed.
- http://www.mif.pg.gda.pl/homepages/frank/