simple ptt

Simple 2-Meter Dipole Antenna - A 2 meter dipole antenna by KV5R

A simple 70MHz antenna  ^updated - A simple way to make a yagi antenna four metre antenna.

4m Slim Jim Antenna - This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment.

Baluns in antenna systems - Understanding Baluns. This article explores some simple antenna system configurations and the effect of key system components, connections and dimensions on feed line common mode current.

Portable 2 Meter J-Pole - This is a simple portable 2-meter J-Pole antenna. You start with a piece of 450-Ohm Ladder Line

K9AY Loop design - Simple version of the K9AY loop antenna in normal delta configuration

T Match efficiency estimator - This calculator estimates the efficiency of a T match tuner using a simple loss model.

Quad for 23cm band - probably the most simple and inexpensive antenna you could make for 23cm.

A simple 3 ele yagi for 144Mhz - A very easy-to-build 3-element yagi antenna for the 144mhz band

KRG Kidderminster Repeater Group - A non-profit organisation responsible for the maintenance of the GB3KD 144MHz VOIP Repeater, and KidderLink simplex gateway, plus the KIDDER packet radio node and GB7PZT bulletin board system.

Tiny Track I - Tiny Track-I is a simple unit offering the transmission of your position-data (as mobile etc) in APRS , just by using a VHF and a GPS.

Hell Formats - Here is a simple definition of all the Hellschreiber modes

Front Panel Express, LLC - The simple and convenient way to a custom front panel - even for single units. Custom-designed front panels and enclosures for electronic equipment.

MakkaM Clock - Simple ham radio clock that shows Local/UTC Time

Mark III Antenna Launcher - A simple and effective antenna launcher system by AA4LR

Antenna Relay and distributor Box project - Have you problem with your RG cables ? This page describes a smart antenna box using an RG-cathode for 3 antennas. The remote control needs just a simple wire and the GND for remote-control

137.7kHz QRSS on one chip - This article describes a simple QRSS beacon exciter for the DX portion of the 2200m amateur band.

Headset Adapter and Footswitch - This project fills the need for a 706 mic/headphone/PTT adapter.

A Simple VFO for 80 and 160 Meters - This VFO is simple to build and is quite stable.

A Simple Radio Receiver - Development of a simple modular radio receiver

PSK31 interface - A simple PSK31/digital interface which can connect your transceiver to a PC soundcard for digital modes.

Antenna Scope - Do you want to measure antenna impedance at resonance? With this Antenna Scope, you have a simple RF Bridge for getting started in an exciting part of Ham Radio, building your own Antennas that work well

Simple RF Measurement Probe - This probe is useful for any low level RF work, and simply connects to your multimeter.

RF Probe project - A simple RF probe diagram

A Simple QRP Transverter for 4m (70MHz) - 70 MHz transverter, 4m band, by G3XBM