filter rf

WC2L Web Cluster - An AR-Cluster powered web interface to packet cluster by WC2L

DARC Ortsverband Dusseldorf R01 - Deutscher Amateur Radio Club - Ortsverband Düsseldorf, R01

DX info e-group - "The site of the e-group ""DX INFO"" Cluster, contests, dx info"

Scanner feed tutorial - This tutorial is designed to help the average person get his scanner feed on the net pdf file

TE Systems - Manuf RF power amplifiers wideband+narrowband for Commercial, Defense, OEM and amatuer markets. Also low-noise rf amplifiers

Gizmotchy Antennas - The Gizmotchy high performance horizontal and vertical beam antenna for 2/6/10/11 meter bands

Hi-Q Antennas - HF Ham Radio mobile operation antennas manufacturer, W6HIQ, HA5CMG, VE7BOC, HF mobile antennas, screwdriver antenna, coils and filters.

WaveSources - RF and microwave oscillators and synthesizers to 10 Ghz

MFSK16 Reference Documents - Performance Reports, Sound Samples and specifications of MFSK mode

N9VV PSK31 Resources - Software, reference and reviews of computers interfaces for PSK31 operating mode

RigPix Database - Images and technical details of thousands of transceivers, cb radios, rotators, rf amplifiers scanners and accessories, by SM0OFV

EB8BEE Victor - Metbee Station NOAA and METEOR Meteorological Satellite Pictures and Marine RF Power Amplifier

Radio DX Center - French distributor for Palstar, Nagoya, Emotator, Belden, Vimer, RM, Batteries compatible, RF connectors... dealer for Kenwood, Alinco, Icom, President, Sirio, Syncron, Midland... Manufacturer for I.T.A. Antennas

Going Postal Ham Radio T-shirts Priority listing - Going Postal produces unique and colorful t-shirts using postage stamps featuring ham radio or electronics themes.

EchoFilter - EchoFilter uses the soundcard of a PC to process income audio signals in real-time. The narrow filter bandwidth allow the extraction signals and sounds from the audio signal that may normally be close to inaudible. It is intended for radio HAMS, hobbyists, researchers, scientists and students in the DSP field.

SpotCollector  ^updated - A free application that captures DX and WWV spots from up to 5 internet clusters and a local packet cluster. DX Spots are merged and stored in a Spot Database on your PC, enabling you to monitor, sort, and filter them in real time; known LotW participants are highlighted, as are needed stations. WWV spots are plotted to show SFI, A, and K over the last solar revolution.

Cluster monitor - Cluster monitor is a tool for web and telnet clusters monitoring. The program shows spot history, the latest spots are shown in a separate window with full information about the DX, announcements, WWV propagation, and full sorting and filtering capability. Full support for AALog and AAVoice by RZ4AG, DXAtlas by VE3NEA. Integrated dial-up support.

SRL QuickSilver QS1R VERB - The QS1R VERB is the most advanced open source digital down conversion (DDC) receiver board on the market. It features a Linear Technologies LTC2208 16 bit, 130 MSPS Analog Digital Converter (ADC) and an Altera EP3C16 Cyclone III FPGA. Connectivity to the PC is through a high speed USB 2.0 interface. QS1R covers 15 kHz through 55 MHz in its standard configuration and can be used in undersampling applications to 300+ MHz.

Freq 51 - Program samples the input, performs an FFT, and graphs the output

Analyzer2000  ^pop - Superfast analyzer for audio and radio signals

VoiceKeyExpress - Turns your PC's sound card into a powerful and versatile digital voice keyer. Commercial by n7qjp

DXCluster for iPhone  ^updated - DXCluster let you know in real time who is on the frequencies and where it was listened the last time. It let you create filters to only see which frequency/CQ Zone/ITU Zone and/or Country and after that you can have an alarm corresponding to a specific Zone or a specific country that raise a popup

The Radio-Frequency Ground - You were told that your audio was no good, that you had "RF in your audio ? This is also known as RF feedback

Build your hamcomm interface - This is the small easy to build interface that will allow you to receive most all the digital modes on you shortwave radio.

A secure power supply - Dchematics and photos of a secure power supply (short-cut, Rf feedback, high voltage etc.) by iz7ath