new tubes

N2CX on End-Fed Halfwave Antennas - This original N2CX article was first published in the 72 newsletter back in 1997 or 1998.

Hex Beam by K4KIO - This site provides guidelines to build a G3TXQ broad band hex beam RF antenna for the 5 ham radio bands, 20, 17, 15, 12 and 10 meters. The G3TXQ hex beam is a new development and actually easier to build than the classic hexbeam.

Tube Tester Manuals

Michelle Troutman Electronics - Sams Manuals and Manufacturers' Service Manuals Sams from the early 1950s through late 1970s; various service manuals for brand name equipment from the 1950s to 1991. NOS Vacuum Tubes A price list of over 1100 tubes.

Fun With Tubes - A noncommercial site operated by Max Robinson and dedicated to passing on and preserving knowledge of vacuum tube circuits and techniques.

Tubes 201 - How Vacuum Tubes Really Work

M.V.S.Z AO Svetlana - Audio hi-end tubes for amplifier

The Tube Exchange - Buy, sell, trade vacuum tubes

The WiWi Tubes Home Page

Micronetics Ltd - Electron tubes/valvs NOS & new production.

RadioActivity: Radio Repair - Radioactivity. radio repair, services, and warranty on 1920's - 1960 radios. New and used tubes.

DL - Contest-Journal - German contest news website mantained by DK2OY and DK5JG

DXFun Web Cluster - DX Cluster mainly in spanish, with chat, filtering available upon user registration, propagation reports and solar status, includes also latest dx news.

Lone Star DX Association DX Notebook - Dedicated to the fine art of DXing, The DX Notebook offers a comprehensive collection of news and other items of interest to the DX community.

PJ – Bonaire - Noah, K2NG, has started a new Rent-a-QTH in Netherlands Antilles

K6BJ - Santa Cruz Co. Amateur Radio Club - The santa cruz county amateur radio club. activities, the newsletter short skip, events, links and other happenings about amateur radio.

Tricity ARC in SE Connecticut - The Tri-City ARC was formed by amateurs in the New London, Norwich and Westerly areas (hence Tri-City) desirous of forming an association of local amateurs with the purpose of furthering better cooperation among amateurs

Radiomaritimeday.org - To remember our past at sea and to support the future of W/T inside New Generations the second week-end of April Merchant Navy Radio Officers and Radio Operators of Maritime Radio Coasts Stations will be active on HF bands to meet Amateurs Radio for a special event

G6AVK QRSS experience - QRSS/QRPp and Beacon News and info with some very interesting links

The Kenwood TS-850S 13 Years Later - Must modern HF transceivers be treated as black box appliances? VE1FA doesn’t think so, and his experience with the Kenwood TS-850SAT bears him out.

Columbia Electronics International, Inc. - Military radio sets for land, sea or air from new current production, unused or rebuilt u. s. military surplus and their accessories and spare parts since 1946 your reliable one stop source.

EasyGram - This Windows MTHELL QRSS NDB and DFCW program extends possibilities of well-known Spectrogram with some new useful features. It enables to define the scrolling area to any size, it can save screen shots in defined time periods , it enables to browse the saved pictures easily by OK1FIG

HI-FI Audio with Kenwood TS-850SAT - Setup guide for DSP-100 and TS-850

High Voltage Breakdown Tester - K8CU technical topics article about high voltage breakdown tester necessary for testing of any high voltage components like vacuum tubes, high voltage capacitors, vacuum relay

Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.