daiwa af 606k filter

A magnetic loop antenna for HF  ^pop - Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. Most parts needed can be purchased at a hardware shop. The antenna can be put together in an afternoon and requires only hand tools to assemble. It should cost less than sixty dollars to build. by Peter Parker VK3YE ex VK1PK

Sierra Fox - An 11 meter radio club

209 SD AF 009 Europa Island - Website of the Dx Expedition in 209 division

The CTRI Contest Group - One of the newest ARRL affilated clubs in southern New England

Heartland DX Association - The mission of the HDXA is to encourage DX activites in Eastern Nebraska and Western Iowa. The HDXA is a ARRL Affiliated Club with members promoting & sharing DX information and experiences.

Brightleaf Amateur Radio Club - Club activities, news and newsletter Ham Chatter Online features a member each month. Field Day pictures, etc. Home of VOA transmitter sites. Club calls, W4AMC & W1VOA Greenville, NC

South Africa - SARL - South African Radio League

F6CRP Denis Priority listing - Site devoted to weak signal traffic SSB/CW V/UHF meteor Scatter,tropo, aurora, fai, ES homebrew

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

Kiwa - Filters and performance upgrades for many receivers

MoonBounce operations - EME operation news, typical moonbounce audio recordings

Safe Mobile Operations - Safety suggestions on operating and setting up amateur radio mobile station.

Flexnet Group - A German group of hams who spend their time developing software for Amateur packet radio. Their main project is the PC/FlexNet package.

Cushcraft Manuals - Amateur technical library, instruction manuals

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

UA3AA QSL Print - Quality and affordable qsl cards.

I.L. Elettronica srl - Import-export telecommunication equipment Cushcraft Antenna Italian dealer, Kenwood Yaesu Icom Dealer

Radios Online - Public Safety, Aviation, Military, Federal Scanning & HF Information

Scaning The Utilities - Hf, vhf, and uhf utility listening, police frequencies, shuttle, aero, usaf callsigns and many other services

PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.

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

FFTDSP  ^pop - FFTDSP is a PC program which can detect weak radio signals in real time. Uses the PC's soundcard and advanced signal processing techniques, extracts and displays weak signals from the receiver audio.

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

Grounding Systems for Hams - Grounding Systems for Amateur Radio Stations, Safety grounds vs. radio frequency (RF) grounds, the practical station ground