simple ptt

The Field Day Special Antenna - Antenna that's simple, inexpensive lightwiight and easy to install

A Lowband Antenna that is Almost Free  ^pop - The Shunt-fed Tower, an effective Low Band Antenna, uses your beam as a capacitive top-hat and only needs a simple feed network and a good ground system to work DX on 80M and 160M.

A 40m Vertical - This antenna is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m band (7.0–7.2MHz) when only restricted space is available

80M Vertical antenna with capacitance hat  ^pop - Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet

The simplest phased array feed system that works - How to calculate "phasing line" lengths that actually work.

20m mini loaded dipole - It is very simple to build and you can tune it in your shack room

Picture of a multiband dipole  ^pop - Pictures of a multiband dipole, build with simple PVC T and standard electrical wire

WLAN antenna 2.4 GHz Do-It-Yourself  ^{updated  pop} - A simple homebrew outdoor antenna to 2.4 GHz band.

Simple double-quad Antenna  ^pop - 2.4 Ghz quad antenna

A Tincan feed for 2.45Ghz - Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

Slotted Waveguide 802.11b WLAN antennas - 802.11b WLAN Waveguide Antennas Unidirectional & Omnidirectional. High gain, Simple construction by Trevor Marshall

NorCal Doublet Antenna - A simple antenna that can be erected very fast, only need one center support, and do not take up much storage room. Works from 40 to 10 meters band

A two element yagi bean - Simple gain antennas for the beginner, a 2 element yagi antenna

K4TR Antennas - K4TR Manufacture and sell simple dipoles, half square 2 wire phased vertical arrays, end fed zepp antennas, G5RV antennas. 1:1 baluns

W8WWV Icom 706MKIIG simple accessories - Acc1 Breakout Box, Fused Power Cable with Accessory Tap, Microphone Breakout Box, CI-V Interface, Using the Auto Sound System for Receiver Audio

PTT line interface for ICOM IC-706 family - Interfacing tips for ICOM IC-706MKII transceiver with a Collins 30L-1 linear amplifier

FT-1K OptoCAT - The simple and safe RS232 CAT interface for Yaesu FT-1000MP, FT-1000MP Mark V and FT-1000MP Mark V Field rigs

Yagi Modeler Applet - This java applet/application implements a simple yagi modeling code. The initial input is a really trivial 2 elmenent yagi.

Hamlog - A simple quick and easy to use Amatuer Log Book for windows

YG-PSK - Simple PSK31 and RTTY program based on the AE4JY PSK engine. Logging inlcudes 10-10 and VP number. Exports to ADIF and CSV.

Avoid pitfalls when recharging batteries to ensure long life - Portable design - avoid pitfalls when recharging batteries to ensure long life - secondary batteries can be simple devices, but improper charging can be devastating to the user experience.

Simple Reverse Polarity Protection - This simple modification is applicable to pretty much any 12 volt operated, positive earth equipment. by Chris Cox, N0UK, G4JEC

A low pass filter circuit - A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.

RS232 interface for Kenwood rigs - SS232K - The simple and safe RS232 interface for Kenwood radios

A CW TX for 80 meters band - This simple circuit will give about 1.2 Watts of output when powered from a 13.8VDC supply.