acoustic tubes

6 element UHF Yagi antenna - A standard 6 elements design scaled for UHF application. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18.

Soft copper Tube Loops - Air conditioning soft copper tubes are perfect for loop construction. If you want to try a loop you must have an air variable capacitor or a vacuum variable capacitor. Article by PY1AHD

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

DK9SQ Antennen - Walter Spieth Antennen offer, Duoband-Portable-Log. Periodic 2m/70cm, Vertical-Loop-Antenna,10-40 Meter and PortableW3DZZ-Antenna as well as fiberglass tubes

Altana Tubes - Brazilian vacuum tube, capacitors, transformers, plugs and connectors, resistances dealer

Electronic Surplus - Vintage tubes, components, test equipment

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

Ask Jan First Electron Tubes - German vacuum tubes dealer

Antique electronic supply - Vacuum tubes, accessories and products for antique radio restoration

Tube World - Your one-stop source for high quality new old stock vacuum tubes.

QRO-Parts.com - Svetlana tubes also Russian capacitors,vacuum and coaxial relay, for RF Power Linear Amplifier builders. Amateur-Radio, Broadcast. Full Online Catalog.

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

Power Gride Tubes - Article on tubes and their usage in power amplifiers design. Explain failures of tube in RF power amplifiers, a common problem in the SB-220 SB-221, TL-922 and other amplifiers.

144 MHz Amplifier using 2xGS-35B - This 144 MHz PA is using 2xGS-35B tubes. It was build by Joel F6JMT for the Radio Club of Fontainebleau F8KTH

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

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