811 vs. 572 tubes

[TowerTalk] Coax Vs Open Wire Line - Discussion at towertalk about coax cable feed lines vs Open Wire Lines

Antenna Matching  ^updated - Antennaa matching basics, matching input impedance, reactance vs. SWR, info on inductive matching and UNUN Matching systems. Capacitive Matching Odds & Ends by K0BG

Antique Radio Store - Based in San Diego CA, collectible radios, test equipment, tubes, antique radio parts, speakers and kits

RadioMilitari - A Personal Museum of Military Radios - Spy Radios - Tubes by Antonio Fucci

I0JXX Ham Radio Parts  ^updated - VHF UHF Amateur radio antenna and antenna parts, accessories for homebrewers, antenna kits, tubes, antenna masts, antenna tripores, insulators, power amplifier mosfet, power splitters by I0JXX

KC8QVO: FT-450 vs. TS-2000 - Comparing the Yaesu FT-450 to the Kenwood TS-2000

10 m WonderBar vs. Antron-A99 - Discussion at eham.net about A99 and WonderBar

Yaesu VX-8r Review - Review of the new Yaesu VX-8r

Nuxcom.de - Antenna parts for self construction, especially for VHF and UHF Yagis designed by Martin Steyer, DK7ZB, coax cables, connectors, aluminium tubes-

Sovtube.com - Russian Radio components - Russian Tubes, Capacitors , Resistors , Ferrites Sockets and other components

Electronic Surplus - Vintage tubes, components, test equipment

Cascade Surplus Electronics - Online catalog for electronic components, parts, surplus, tubes, test equipment and more

Antique Radio Tubes - We sell antique radio tubes and antique tube radios We have over a thousand different radio tubes in stock. We also have a large stock of globe tubes.

Antique Radio Tubes - Antique Radio Tubes Sell antique radio tubes, over a thousand different radio tubes in stock

2 x 4-400A Amplifier Deck - A Class C Amplifier rebuilt with 4-400A tubes by W7IUV

HF Power Amplifier by CT1FMS - An RF power Amplifier for HF bands with 3 GI-7B tubes by CT1FMS

Dentron MLA-2500 Retrofit to the GI-7B - How retrofit the MLA-2500 with the Russian GI-7B tube to replace the 8875's which are both expensive and hard to come by tubes by W4EMF

500w 4X150A/7034 TubeVHF amplifier - 500w 4x150a/7034 tube 26-30mhz vhf output amplifier

GS-35B 6 meter amplifier - VHF power amplifier for 50MHz using GS-35B tubes, output 1500 W with 75 W input

QRP tranceiver for 80 and 40 meters - QRP 5W trasceivers using 6C4 and 5763 Tubes for 40 and 80 meters band

Five by Twenty - A 5 tubes SSB QRP transceiver for 20m ham radio band

Regenrative Receiver Design - N1TEV high performace regenerative receiver design

Electron Tubes & Valves Data - KyteLabs InfoBase - Electron Tubes & Valves Data

23cm GI-7B(T) PA - Tubes used to achieve about 500W on 23 cm band

About vacuum power tubes - KK5DR on RF power tubes