low pass audio filter

Flags and Pennants - Excellent low-noise receive antennas originated by EA3VY and optimized for 160 meters by K6SE

Mauritron Technical Services - Service Manuals & Schematics, supplied for most types of equipment, Audio, TV, Video, Test and Ham Radio

Energy radio station Priority listing - Hompepage of the following stations, 295nrg101, 295zf1, 187zf1, 168nrg101, 15nrg101

C6AMS Bahamas DX Pedition 2010 - Online log and live audio from NA6M/C6AMS, N5BW/C6AMR, K2CK/C6ASH, K5AB/C6AAB and W5ETY/C6ATY will be active from Eleuthera Island, Bahamas (IOTA NA-001)(Grid FL15)9 July to 25 July 2010. Operating on 160-6m CW, SSB and Digital Modes

Poland - PZK - Polski Zwiazek Krotkofalowcow, Polish Amateur Radio Union

SV8CS Spiros - Dx on Hf specially on low bands from Zante island Greece

Waterlook police live audio - Waterloo regional police live audio feed

Array Solutions - WX0B - Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.

HD Communications - Rf Connectors,RF Amplifiers,RF Filters,HF cable and accesories. Tower hardware valves and tubes

Kiwa - Filters and performance upgrades for many receivers

Vectronics - Antennas, Filters, accessories, wattmeters, tuners and amplifiers.

2.4 GHz FM ATV - 2.4 ghz FM ATV experiment and equipment list

NOGA QRP club - Small, but growing, group of amateur radio enthusiasts, most of whom are within 90 miles of Atlanta, are interested in promoting the development of the branch of amateur radio known as QRP - building and operating low power transmitters, receivers and transceivers.

Shuttle Audio Frequencies - The frequencies listed here may carry shuttle audio during space shuttle missions

Setting audio on Yaesu FT-2000 - Yaesu FT-2000 Audio Settings - How to make the FT-2000 sound clear and clean by LA5MDA

Yaesu VX-8R Audio Level - The RadioReference.com Forum topic about VX-8R and audio setting

Mainland Radio Communications Priority listing - Yaesu Kenwood, drake MFJ JPS JRC AOR Daiwa Hygain Weltz Uniden Lowe Black Jaguar Trident dealer

Low Power Broadcasting - Low power broadcasting frequently asked questions by Rick Harrison

Free Radio Network - Free Radio network, qsl, links, audio, chat and many infos about pirate radio

TH-D7 control program - This software allows you to control TH-D7 radio functions in real time, using a windows interface. This software will graph current activity of any 4mhz range, allowing the user to mouse click any active portion - automatically changing the radios frequency.

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

432 MHz EME PreAmplifier - 432 MHz EME low noise amplifier. Circuit, components and image by Christoph Petermann DF9CY

Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter

TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.

Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok