low pass filter 144mhz

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

The TTFD-2 antenna - The lowest-cost approach for home brewing broadband, general-purpose antenna for shortwaves

Loop Antenna for 6m  ^pop - Indoor loop antenna for six meters band, project by Colen Harlow, G8BTK

CB Quad antenna  ^pop - A low-cost and easy to build Quad antenna tuned for CB band on 27 Mhz.

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

RSGB HF Data Band Plans - The following frequencies are assigned to datacommunications in the HF bands within the UK By RSGB data communications committee information.

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

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

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

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

Hellschreiber beacon project - This web site describes a low power beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.

ISS Realtime tracking - 5 Day prediction table for ISS and find when the ISS will be visible from your QTH by N2YO

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.

SSTV FAQ - Frequently Asked Questions about Slow Scan TV by ON4VT

MIR SSTV Photos - SSTV pictures received from MIR via Slow Scan TV, by WB8ERJ Mike.

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

SA Watch - SA Watch allows you to monitor and analyze the wandering that your GPS receiver appears to do when it is at a fixed location

Spectran - Program designed to do spectral analysis and real-time audio filtering on reception of audio signals for EME, VLF, SETI applications. Offer support for MTHELL, QRSS, DFCW, NDB, WSJT by I2PHD

RDCP/Mac - RDCP/Mac is a communications software package to interface your Macintosh to models of Kantronics TNCs. RDCP/Mac uses the Kantronics HOST mode allowing simultaneous connections on VHF packet and the HF digital modes when using the KAM.

PLL2 - 2nd Order phase locked loop design for passive and active circuits. Bode plot, step response, design parameters

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

KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter

SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier