qrp receiver

X-Beam antennas - Two element X-Beam is a high-performance broad-band antenna that is ideal for Ham radio operators with limited space. X-Beams are inexpensive and easy to build. The performance of the simple X-beam is amazingly similar to larger, more conventional antennas by 4S7NR

Slim Jim 2m Vertical - This VHF 145 MHz antenna is easy to build and with no radials. It shows equal gain of 5/8 lambda. It is light weight, you can hang it somewhere (on a tree may be) and work.

80 meters Short Dipole - The best antenna is the simple Dipole. If you have height, you even can put up a quarter wave vertical or an inverted, but sometimes you may need shorten version by 4S7NR

Ribbon Dipole - Ideal antenna for QRP work, as it has more gain over dipole.

N2CX on End-Fed Halfwave Antennas - This original N2CX article was first published in the 72 newsletter back in 1997 or 1998.

"Halfer" End-Fed Halfwave Antenna  ^pop - End-Fed Half-Wave Antenna for the 7 or 10 MHZ amateur bands intended to provide a very simple to erect yet effective portable QRP antenna.

30 meters digital group - Group dedicated to 30 Meter digital activity on this unique HF band! All licensed Hams and SWLs anywhere are welcome to join in. Include live PSK 31 receiver, dx spots and event calendar

RT Systems - Radio Programming - Windows programming software for Icom and Yaesu amateur radios and scanners and receivers by RT Systems. Produce radio programming cables for Yaesu Icom Kenwood radios

Milestone Technologies - Morse Keys, Keyers, Keyboards, and Keyer Paddles, electronic parts, QRP transceivers, books and tools

QRPKits - Hendricks QRP Kits is a company that specializes in high quality, low cost QRP Kits

Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP

Soft66 - Direct Conversion Receiver for Software Radio Soft66AD

Guide to Solar Activity - Paul Harden NA5N has produced a superb guide to solar activity and HF propagation for the QRPer

Two Kenwood TS850 modifications - Here are two simple modifications / repairs for the Kenwood TS850 HF transceiver, dual receiver mod, and battery pack replacement

FT-1000D Why DX in Stereo - Yaesu's classic, top of the line HF transceiver for contesters and DXers is probably the only ham dual-receiver radio that does true diversity reception

Natural Radio Listening: Streaming Audio - A page about fascinating Very Low Frequency and natural radio, with lots of streaming audio links from remote receivers. Some experimental stereo pairs around the world.

Amateur Business CB Radios - Sell 2-Way radios and Accessories. Amateur Radio, Business Radio, CB Radio, FRS & GMRS, MURS, VHF-Marine Radio, Shortwave & Wideband Receivers, Police-Scanners in WA Usa

N1EQ Mike Nadeau Repair Service - Specialize in servicing modern HF/VHF/UHF multimode transceivers and receivers Icom, Kenwood, Yaesu, and a few others

TK-150 - tk150 experimental Software for the Standard VR-150 Receiver

Simple anti-static device - With all the wire you have out, you may run into a problem with static buildup on the antennas. This static may try to make its way into your receiver, causing you major problems and damage that can run into a lot of money.

YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.

Easy bandpass filters - Quick and easy bandpass filters for receiver input by George Dobbs G3RJV

HDR-2005 Receiver Workbench - Homebrew HF receiver with quadrature sampling detector QSD (aka Tayloe Mixer)

Universal QRP Transmitter - Here's the homebrew Universal QRP transmitter adapted from work by Wes Hayward - W7ZOI. The circuit originally appeared in QRP Classics published in 1980 by the ARRL

40 meter QRP Transceiver - This semi-homebrew QRP (low power) CW transceiver is based on the ARK-40 transceiver kit, by S&S Engineering. With its built-in CW keyer and 5 watts of power, the basic ARK-40 transceiver is an outstanding 40 meter CW performer