dl grid squares

Lambda / 2 no Counterpoise ATU - The Multibandfuchs by DL7AQT, Frank

Twin Feed experiment - Experimenting a low impedance feedline by G3TXQ

Preventing Feedline Radiation - How to handle feedline radiation issues

G5RV Antenna - G5RV antenna review by DL8NCR in german

Dummy Load Special Antenna - The wire antenna described in this page provides much stronger signal strength while staying within the concept of a dummy load antenna.

HB9CV antenna - An high performance directional antenna plan with dimensions for 40 to 10 mt bands

Collins R388/URR Receiver Resource Page - A page dedicated to the Collins R388

DL2NBY Contest Calendar - This site provides dates and rules of nearly 400 Amateur Radio HF contests.

W8JI Contest Station - Middle Georgia USA contesting station. Consistent record holder in 160 meter and 40 meter contests.

5Z4HW - Sigi Presch DL7DF from November 20th to December 3rd will be on holiday in Kenya as 5Z4HW

FS/DL2RUM - DL2RUM will be active as FS/DL2RUM between 3-Dec-2011 and 12-Dec-2011 include DL2RUM Online log

MaxPak Midlands AX25 Packet Radio User Group - One of the oldest Packet Radio groups in the UK

Wythall Radio Club - Wythall Radio Club is one of the most active clubs in the Midlands.

Wyre Forest Repeater Group - The Wyre Forest district is located in the County of Worcestershire in the central part of the UK and covers the towns of Kidderminster, Stourport on Severn and Bewdley.

APRS in Deutschland - APRS-DE operating APRS in Germany

Kenwood TL-922 Service Manual - TL922 Service manual

PTT INPUT for the Elecraft K2 - separate the K2 dot paddle input from the PTT

Handling of extremely strong signals K2 Mod - Makes reception at frequency of strong tx close by possible

NICD Lady Batteries - Batteries supplier

ICNIRPcalc - ICNIRPcalc allows you to calculate safety distances for many know amateur radio antennas with respect to ICNIRP limits by DL9KCE

EvoSpice - A numerical optimizer (solver) for LTSpice IV. Uses a fast evolutionary algorithm. You can use EvoSpice to design high efficiency power supplies, audio filters, low noise RF amplifiers and an endless list of other applications

DSP Radio - DSP Radio Software Defined Radio for Mac OS X by DL2SDR

QRQ CW trainer - qrq is an open source Morse telegraphy trainer which runs on several operating systems (Linux, Unix, OS X and Windows), similar to the classic DOS version of Rufz by DL4MM.

RF Coaxial Switch - An interesting rf coaxial switch project capable of handling 800-1500 W. This is a cheap home made RF coaxial switch in use by PA0FRI

CW Key Base - Lightweight keys and paddles may be great for backbacking, but what if all you want is the darn thing to stay reasonably still on the desk?