PE4WJ amateur radio homepage

VHF Aurora: 144 MHz E-Skip in EU:

From The DXrobot

APRS Dingetje – a small portable APRS tracker that piggybacks onto the Yaesu VX-3

Simson – a 500kHz SDR / QSD frontend

Indoor magnetic loop antenna experiments

Warbler – a JAVA-based 1200 Bit/s BPSK AX.25 soundcard demodulator

Homebrew HF SSB Transceiver

ARDF / Foxhunting

Visit the shack

How to make your own ladderline

50MHz

VPK2006

VHF & Microwave

Amateur Satellites

Portable operations

GPS disciplined 10MHz reference

Antenna tuner experiments

Other projects (1:1 balun transformer and antenna tuner)

MOSFET HF PA experiments

FT-817 PA replacement

Last update: 14 November 2010

Contact info on bottom of page

Operating AO-40 mode U/S in the field

Links:

The Delfi-C3 project

The Delfi groundstation webcam

Koen PE1RCW

Gert PG5D

Howard G6LVB

David G0MRF

Wouter PA3WEG

WebSDR at the Delfi-C3 groundstation

WebSDR www.websdr.org

AMSAT www.amsat.org

AMSAT-UK www.uk.amsat.org

Borrelronde http://www.borrelronde.nl

VHFDX www.vhfdx.de

DX cluster http://oh2aq.kolumbus.com/dxs/

ON4KST chat http://www.on4kst.com/chat/start.php

Maidenhead gridsquare distance & bearing calculator

Hepburn tropo maps

G7RAU MUF maps

You can reach me via e-mail at:

<insert my call here> at amsat.org

73, Wouter Jan Ubbels PE4WJ