audio tx

Small loop antenna for 15 and 20 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space by Lloyd Butler VK5BR

Antenna Height Above Average Terrain - Antenna Height Above Average Terrain (HAAT) Calculator

Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC

Horn antenna for AO-40 by AA2TX - These notes provide the directions for constructing a Cardboard-box antenna for receiving the AMSAT OSCAR-40 satellite on 2.4 GHz (S-band.) It is constructed from two cardboard cartons, aluminum foil, and packing tape. No coax, connectors, or soldering is needed.

WC9C Beacon - TX on 28.265 from Pimento, IN

PS8RF/Beacon 24 hours in air - PS8RF beacon tx in 7.035 Mhz with 3 W

I2YSB - I2YSB MANAGER of 5U1A 5U2K 5U3T 5U4R 5U5A 5U6W 5U7B 5U7DW 5U7JK 5U7JW 5U7RW 5U8B 5U9C 5UØT 5WØSB 6OØCW 6OØN 9L1X J2ØMM J2ØRR FO/I2YSB HI9/IK2GNW TX4PG ZK1GNW ZK3SB

Edmonton Fire Department Live - Listen to live audio from the Edmonton Fire Department.

Farallon Electronics - PACTOR mode radio modems and accessories, performance sailing electronics and innovative hard to find parts. Audio cables, packet cables, usb to serial converters

Ivie - Manufactures automatic mixers, analog and DSP signal processors, room combining and matrix mixers, and audio test equipment for just about any customer application.

Icom IC-756 PRO Repair - Repair of a 756pro that was powering up always on TX due to some damage in the ACC1 connector area

IC-746PRO TX Problem - The IC-746PRO is a great rig. But it has a few reliability issues, especially with the earlier-production units. This article addresses four problem areas:. IC151 on the RF Unit. Driver circuit on the PA Unit. HRX-muting circuit on the CTRL Unit. Predriver on the PA Unit.

WideBand for Yaesu 817 857 897  ^pop - This software will allow you to extended TX for the Yaesu FT 857 FT 817 FT 897 and reset back to standard factory defaults.

FT-847 General Coverage Mod - General Coverage TX Mods by G1IVG.

Tower Electronics - PL-259, Motorola & N connectors, Coax Seal, universal adapter kit, TNC, Mini-UHF, SMA, F & BNC connectors, audio connectors,antenna mounts and antennas

Filtroid - Filtroid is an extremely easy-to-use program for synthesizing microwave filters. It can be used to design practically all filter types from audio to microwave frequencies as well as amplitude and delay equalizers and attenuators.

WinHell - Feld hell freeware windows program that permits RTX hellschriber operations by PA3BQS

HxPI Morse Jabberwocky - A translation of Jabberwocky into Morse Code. The famous nonsense poem Jabberwocky by Lewis Carroll, from Alice Through the Looking Glass, has been translated into many languages. Here it is in Morse Code, as MP3 audio files that can be downloaded. The files are at different speeds (words per minute, wpm) to suit those at different stages of learning morse code.

Test Tone Generator - This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.

SigJenny - SigJenny turns your PC into a flexible and powerful audio signal generator for free. It can create multiple waveforms, sweep, fire single or repeating tone bursts. You can save your sound as a wav file, display a frequency response, use SigJenny a bit like an oscilloscope, and do a very good impression of a police car!

A simplified video control box - When one starts in amateur television, one begins with a small simple transmitter and a small camera. But very quickly, one needs to transmit audio signals with the pictures, then comes a second camera

The Super Sixty transceiver - The 'Super-Sixty' a 5 MHz 60 meters band transmitter & receive converter

80 meters cw transceiver - The home made transceiver covers 3.5 to 3.6 MHz and is CW only by GW4ALG

Designing Op Amp Audio PreAmplifiers - Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX

Sound Card Interface by VK6YSF - Presented here is a transceiver to computer sound card interface complete with automated transmit key function. A sound card interface is simply the audio coupling of a computer soundcard and a transceiver to allow various computer applications that send and receive SSTV, RTTY, PSK31 and other similar modes based on soundcard generated signals.