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Online is a VT100/ANSI terminal emulator and Telnet client for Palm OS organizers. Connect to Unix systems, configure routers and reprogram embedded computers. -
World Castle award web site. The program goal is consolidation of radiohams of different countries for activation and popularization of historical objects all over the world. -
Demonstrates the construction of a custom programming cable for Yaesu VX-7R and VX-5R handheld transceivers, enabling computer interfacing for memory management and frequency coverage adjustments. The resource details a six-transistor circuit design, powered by the computer's RS232 interface, utilizing readily available and inexpensive discrete components. It includes a complete bill of materials, specifying transistors like the _2N2222_ and _2N3906_, diodes, and resistors, along with a matrix board layout for compact assembly within a 75x50x25mm enclosure. The guide provides practical tips for working with matrix board, such as scoring and snapping, track cleaning, and component soldering order. It outlines the specific connection requirements for both the VX-7R (via Yaesu's CT-91 breakout lead with a 2.5mm stereo jack) and the VX-5R (via CT-44 or a four-section jack), detailing signal and ground pinouts. The author successfully tested three circuits, documenting the one with complete two-way communication, allowing users to program their rigs with software like _VX-7 Commander_ and achieve capabilities beyond commercial cables, including band adjustments. -
Dodgy plans to make Archimedean spiral antenna for RTLSDR software defined radio receiver. Made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that will cover a broad range of the rtlsdr dongles E4000 tuners -
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Ham radio blog dedicated to military radio equipment by EA3FOW -
End fed half wave tuner a handy tool for field day and portable operations -
This article contains the measurements for building a full wave loop using wire and length of 1/4 Wave Coax Matching Transformer -
Homemade Loaded Coil Dipole ( w8010 diamond ) for 10, 15, 20, 40 and 80 meter -
Homepage of Hong Kong's elite group of DX'ers -
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SS232K - The simple and safe RS232 interface for Kenwood radios -
Allows you to automaticaly upload ARGO screen captures to your webpage in a convenient way. by ON7YD -
How to replace the lithium battery in this ICOM radio -
There's no longer any need to invent new swear words -
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This Duoband-Yagi has a boom of 3.60 m and 3 elements for 10 m 4 elements for 6 m and one feedpoint with 50 Ohm -
Federachi - federacion de clubes de radioaficionados de chile -
Homebrewed transceiver for 20 meter originally born for 17 meters band -
Emergency service and weather, dedicated to the Community and City of New York -
The 2 metre fox-or transmitter is a small low power transmitter which mounts in a small plasic pipe and runs off two AA batteries. The board measures just 12mm by 70mm. -
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Skycraft Parts & Surplus, Electronic Surplus Store in the Southeast, antenna parts, wires. -
A non-political DX organization, founded in 1966. Its aims are to strengthen this fascinating and scientific hobby as well as the international DX movement for better understanding and friendship among nations. -
Welcome to the Amateur Television Directory, the source for finding sites related to Amateur Television and Ham Radio. Find out where Amateur Television is being used in your state or country. -
The lithium battery problem in the Kenwood TS-570 -
Presentation by AC8GY on classic G5RV Antennas and other horizontal dipoles, the popular G5RV, ZS6BKW, dipole fan, Alpha-Delta DX-CC and a trap dipole are modeled in EZNEC and compared. -
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An overview of some of the ways, and the key tips on how electronics soldered joints can be unsoldered or desoldered. -
Martin Francis NDB K9AY mast project, with pictures and homebrewing details -
Testing SWR on your antenna and getting the best performance from your investment by L.D. Blake, VE3VDC -
Batteries for 2-way radios two way radio laptop camcorder UPS and more. Purchase batteries for your laptop two way radio ups digital camera from Battery Universe. -
The 4Hz tracker - APRS tracker with AT89C4051, now also with 5W transmitter onboard. -
Antenna dealer, antenna masts, towers, mounts, antenna rotators, steppir and optibeam inrad dealer -
This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band -
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Cartoonist will illustrate your concepts for use on QSL cards and more by cartoonist Dan Rosandich -
Nifty! Quick Reference Guides and short form Mini-manuals and for Kenwood, Icom, Yaesu and Elecraft transceivers. -
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Online shop for all electronics needs. Cables, Buzzers all kind of electronic components capacitors, inductors, relays, resistors crystals transformers, hardware like knobs screws nuts and washers, opto electronics, diodes and transistors, soldering desoldering products, test equipmemt and tools -
Application for the Apple Macintosh computer that provides a CW contesting interface for the popular MacLoggerDX loggging software. FKeyer runs on MacOS X and uses an external keyer such as the MicroHam CW keyer. -
Article describing how to homebrew a yagi antenna for 50 MHz, includes plans for a four and five elements yagi beam and details how how match impedence with a gamma match -
Classic Radio Restorations specialize in professional repair and restoration on all makes and models of antique radios and vintage phonographs. Since 1978. -
The document titled 'Extending the Range of Your Handheld' by WG7S is a guide on how to extend the range of your handheld VHF UHF transceiver by using an external antenna. It provides information on comparing popular models, selecting the right antenna, and resources for amateur radio antennas. -
The antenna was built to be used for shortwave listening with a Tecsun PL-660 radio receiver. Later it was used with Yaesu VX-6 handheld transceiver and with Yaesu FT-817ND for shortwave listening. -
STAMPFL Morse key, founded by Heinz Stampfl HB9KOC in Switzerland. Stampfl manufactures Morse Key in small batches and in the usual Swiss Quality. -
Construction and analysis of a low cost omnidirectional horizontally polarized antenna for 144 MHz, including notes on halo antenna stacking