mode identification

Designing Driven Elements in Yagi antennas - The design and feeding of driven elements for VHF/UHF Yagi antennas , modeling, observations and some case studies by Graham Daubney F/G8MBI

Tri-Mode Buffer Amplifier Box - The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas.

Eggbeater II Omni LEO Antennas - Presented here is a high-performance, circularly polarized omni-directional antenna that is easy to build, easy to tune, inexpensive, and will work all the mode J Low Earth Orbit (LEO) satellites

A High Gain Mode J/B Yagi Antenna - A 70 cm and 2 m arrow-like antenna by DF8GH

Duoband DK7ZB-Yagis 2m and 70cm - These Yagis cover the range of 144-146MHz on 2m and 430-440MHz on 70cm. They can be used for alle modes (FM and SSB/CW). On both bands the SWR is good across the whole band.

AATest - A special edition of AALog, optimized for the use in a lot of different contests. It can export file in Cabrillo, .SUM and .ALL files, ADIF. To use this program in CW and digital modes you need to use CwType and TrueTTY.

VU2UKR HAM Radio Station - HAM Radio India Yagi Beam CW QRP SSB QUAD DX circuits sound card Transceiver Morse HF VHF Antenna Satellites Amateur Club Station Operators Licence Exam ASOC Guide Digital Mode Equipment Transmitter Experiments Project schematics Beacon dx HAMSAT VUSAT Satellite Emergency communication Information Homebrew QRP Kits

EA4FRB Melchor Varela - Interested in electronics, active in HF and 6M, mostly in digital modes and also enjoy listening and receiving from utility stations. Many interesting homebrew projects

Introduction to Data Communications - Roger Cooke G3LDI article on Data Communication modes

Which digital mode for keyboard QSO - Which digital mode should I be using for keyboard to keyboard QSOs?

Operating in SPLIT mode - He's operating split? What does that mean? By Terry Lines, KD5RA

Tiny Trak & eTrex GPS - Tiny Trak is a simple choice for tracking, simply by using a usual VHF and TinyTrak as APRS modem.

PExprt - Tool for magnetic component design and modeling. Design and modeling of magnetic components such as inductors, planar transformers and integrated magnetics used in power-electronics applications.

ROS ham radio modem - ROS Multimode software for Ham Radio Operators

LoopHam Linux - Ham radio Distribution of the linux operating system that can be installed on and run from a dos system (msdos and win95/98 in dos mode) It include all AX25 ham needed packages and a small web server

CwType - The terminal program for CW-operators. You can transmit both from the keyboard and from a paddle connected to game or LPT ports. You can also operate in paddle iambic mode. Control of the transceiver (PTT and CW keying) is made through one of the COM or LPT ports. CwType can integrate with AALog software

IRTTY - IRRTY just a modem based on RTTY protocol for IPHONE and IPOD Touch.

HamPort - A Free windows, universal program for RIG control, can read and set mode and frequency on your transceiver. The program can control ICOM, Yaesu and Kenwood transceivers, by DXSoft

I-PSK31 - Ipsk31 is a modem based on Bpsk31 protocol for ham radio digital transmissions. Can be used on IPhone and Ipod Touch, and let you transmit and receive PSK31 directly from your Apple device.

CMOS Super Keyer - Home made keyer with 8 memories, auto spacing, adjustable speed & weighting, separate paddle and key inputs, beacon mode, positive or negative keying, fuse, extremely low power requirements, and a bullet proof housing by AA5TB

Signal Source for AO40 mode S - Signal source circuit for 2.4 GHz by sv1bsx

Regenerative receiver for beginners - A modern version of the classic regenrative receiver designed and built by Charles Kitchin ARRL Article

The Modern Armstrong Regenerative Receiver - Ramon Vargas Patron articel on regenerative receiver project

Big Dummy's Data Interface - Simple soundcard data interface for the various data modes

KK7UQ Interface - Complete design and construction manual of the mode II, printable labels, templates and info to interface digipan