double tone generator

The extended double zepp - This wire antenna exhibits extraordinarily high gain in a bi directional radiation pattern.

Bazooka Calculator  ^pop - Calculate Double bazooka for Win3/Win95 by W4BEJ

Double 5 / 8 Flower Pot Antenna - The Double 5/8 is a natural extension of the Single 5/8 and uses a 5/8λ element for both the top and bottom radiators.

Double-L For 80/160  ^pop - Double-L Antenna For 80/160 by Don Toman, K2KQ

National International Doublers Net - 7.278.6 MHz USA Canada and Mexico

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!

Mr coily - Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

International Antenna Corporation - Double bazooka antennas

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.

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

IMAGINE QSL's Print Service - We design and print QSLs (simple,double,triple...), calendars, awards, directories... High quality at lower price

Isis Electronics (Cheltenham) Ltd - UK Sales of used RACAL, Watkins-Johnson, Icom, Microwave. Large Qty Racal 1792 in Stock. Spectrum Analysers, UHF,VHF Generators, Network Analysers, Bus Switches.

HAM Software de ON1DHT - Great shareware software collection for ham radio, includes prefix finders, locators,frequency generators and links to other ham radio software.

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

Microwave marker - A simple marker generator for the microwave bands

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

PrecisionE-200-C - Signal generator Precision E-200-C