tube design

Cubic Quad  ^pop - The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands

WW2Y/K2WI Beverage design - Ideas for enhanced beverage antenna performance, Single wire beverage improvements and arrays of two beverages

Pfeiffer Quads - The Pfeiffer Quad was described in QST and has the desirable feature that it is smaller than a standard cubic quad but does not compromise performance very much. The Pfeiffer design is rather difficult to construct because of the complicated linear loading networks required.

Fiber Glass Rods and Tubes - Properties of fiber glass rods and tubes

CW Buffer, Amplifier & Preamp Sequencer - The AMPSEQUENCER board is an advanced microprocessor driven control board specifically designed to buffer CW key signals while switching the amplifier to transmission, it can also be used to provide proper TX delay timing for RTTY and Pre-Amplifier proper sequencing

The One Man Tower - Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world

New Sensor Corporation - Distributor of Sovtek, other current production vacuum tubes, and NOS tubes. Distributor of electronic parts for audio and musical instrument amplifiers. Manufacturer/ Distributor of Electro-harmonix effects.

Eimac - Innovators in Power Tube Technology

The ElectroMagnetic spectrum - Excellent poster representing the electromagnetic spectrum from 31.2 mHz to 6.52 EHz, PDF file poster designed by Anthony Tekatch

Fax480 - FAX480 was developed to provide for relatively high resolution image transmission on HF, VHF, and UHF amateur radio bands. FAX480 was designed to bridge the gap between conventional slow scan television (SSTV) and conventional facsimile techniques.

Setting up the Electroinstruments Key-8 - These instructions are designed to help you find the adjustment that suits you best. What you are looking for ultimately is a particular feel, and that will vary from person to person.

QSL Canada - Very high quality QSLs with prices that fit any budget. Large selection of cards style, free design.

Tubes for amplifiers - Sales tubes for amplifiers like GS-23B,GS-31B,GS-35B,GU-34B,GU-43B,GU-74B,GU-84B. Include links to aplifier homebrew projects

Vacuum Tubes.com - Homepage for SND Tube Sales

Vacuum Tubes Radio - Vacuum Tubes and Radio Tubes Our specialty. We carry over 5,000 radio and vacuum tubes in stock every day and we ship world wide. Tubes for industry, music, ham radio, the audiophile.

Colboth - Antique and ham radio repair - Repair and restoration of not just antique tubed radios, but also new solid-state Amateur Radio products also!! Also, electronic kit building and troubleshooting, antenna grounding kits and products.

JACARS - Tthe ultimate program designed to connect you to ACARS systems around the world via the Internet

OH1AA Logging program - The OH1AA logging program package is designed to handle the book-keeping of amateur radio contacts. The package contains three separate main prog- rams by which contacts are managed. Run under DOS and is freeware

pTrack - pTrack is a satellite tracking program for the Windows CE / Pocket PC palmtop computer. It was designed with simplicity in mind and does not support all the features found in larger satellite tracking packages.

Satbuster - SATBUSTER for Windows is especially designed for satellite visual observers and trackers. Its users, mainly amateur astronomers and radio amateurs, appreciate both the accuracy and the simple to use graphical interface.The software is aimed to hobbysts. However a growing number of plain folks are starting to use this tool to recognize and look at the International Space Station and the Space Shuttle during its missions too

Datasheets DB - CBTricks Datasheet Database, Capacitors, leds, inductors, realys, resistors, tube and diodes

Yahoo! Groups : TS-850S - Welcome to TS-850S HF Transceiver Owners Group. Group designed to discuss the attributes, usage and technical information sharing, concerning this Classic Transceiver. Please feel welcome to add your questions, information and comments. We hope you enjoy the Amateur Operators "Attribute of helping ones fellow operator". Valid AmateurCallsigns only, admitted.

Kenwood TS-950S RF gain mod - The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all, of them were produced with a design flaw which allows the RG GAIN control to cease function in the presence of a strong signal IF the AGC has been turned OFF

Station Lightning Protection - This website outlays the basic knowledge, safe design and installed equipment that are employed in the lightning protection system of a US Coast Guard Auxiliary Radio Facility. This should also be relevant to the Civil Air Patrol, MARS, and Amateur Radio stations who provide emergency communications capability for public safety or the military

A 80/40m DDS controlled QRP CW transmitter - JUMA-TX1 is a 5W CW transmitter for the 80/40m bands. Juha (OH2NLT) and Matti (OH7SV) have had high quality CW keying and a compact size as design goals for this project. No coils need to be wound to construct this transmitter!