tone squelch

RadioActiv - Featuring Eddystone, Classic British receivers (a history from 1898 - 1973) and Hubble-Bubble a personal web page

Vintage Radios - Purveyor and Collector of Antique/Vintage Radios, Valves (Tubes) and Service Data for many radios. Alba Bush Champion Cossor Dansette Decca Defiant Eddystone Ekco Emerson Etronic Eveready Ferguson Ferranti GEC Grundig HMV Invicta Kolster-Brandes Lissen Marconi Masteradio McMichael Mullard Murphy Pam Perdio Philco Philips Pilot Pye Regentone RGD Roberts Sobell Sony Stella Strad Ultra Vidor

Antique Radio Repair Service - I collect, repair, refinish, restore, and sell tabletop, tombstone, and cathedral, radios from the mid-1930's through the mid-1950's.

CB Packet Forums - Packet radio on cb band discussion forum

CB radio in U.K. discussion - news and views from the UK about the course of CB in the U.K. and Europe.

Saddleback Repeater Association - Southeast New Hampshire W1SRA / 147.000Mhz / Negative Offset / 100.0 PL Tone Welcome to the Sunday Night Net each Sunday evening at 8:00 PM.

KARS Annual Hamfests at Peotone, IL - KARSFEST, held at the Will County Fairgrounds. Sponsored by the Kankakee Area Radio Society. Large and well attended hamfest and computer show!

Pipo Communications - The highest-quality and most reliable Dual-Tone Multi frequency encoders.

Optoelectronics - DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers

CONEX - DTMF Remote Controls, DTMF tone generators and broadcasting products, remote broadcasting via cell phone, cell phone mixer and remote phone keypad

Pacific Research Solutions - Repeater Controllers, Repeater Tone Panels, Telephone Interface, Remote Monitoring Systems, Process Control and TDS Monitors

Basics of Radio Astronomy - This workbook was developed to support training for the Goldstone-Apple Valley Radio Telescope, but is a resource applicable to all radio astronomy.

Introduction to MFSK and the MFSK16 - A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.

Morse code ringtone generator - This page converts text into a morse code ringtone playable on most mobile phones.

200 Morse Code QSO`s by Les Johnstone, GM¤SOZ - These are 200 Morse Code QSO`s which might typically be heard on the HF bands.

C.B. Packet Priority listing - Packet radio in the U.K.and other U.K. radio including 446 and SSB on 11 mtrs

Ontario Unlisted Frequency Guide - The Ontario Unlisted Frequency Guide web page is dedicated to scanner radio hobbists who are frequency hunters.

Groton Electronics - Repair all major brands of Amateur Radio Equipment, such as KENWOOD, ICOM, YAESU. We also repair vintage American radio equipment.

Scanrec Scanner Recorder - Scanner Recorder (Scanrec) is a free audio recorder that is primarily designed to record speech. It has a VOX control that allows the user to save disk space when no sound is present in the signal. Since FM communications has such an effective squelch, the recorder works best with FM. HF ham bands and World Band radio have such a poor signal to noise ratio that the VOX gate on Scanrec might not be very easy to set.

THROB - An experimental program using 9 tones and FFT detection

WSJT High Speed Meteorscatter - "Software uses four-tone frequency-shift keying for meteor scatter. WSJT stands for ""Weak Signal communications, by K1JT"", and plans call for the program to include more than one communication mode."

59+ CW  ^pop - Freeware Win32 application can be used for sending CW signal to the transceiver over a COM port or simply listening to Morse code on the speaker. The application is very easy to configure and will allow you to you to add new Morse characters set speed, tone, dash, dot, PTT line delay and other parameters. It is also possible to set shortcuts for call, QTH, name, RST and ANY other QSO field.

Double Tone Generator - Double tone generator for testing intermodulation

Audio Spectrum Analyzer - OscilloMeter  ^pop - Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.

30m QRP Transceiver kit - 38 Special, 30m QRP transceiver by Norcal QRP club, single super het receiver, full QSK with sidetone smoothly