Categorie: Equipment

Match fixing

No not Match fixing, but fixing the Gamma match. It didn’t have enough capacity to dip in the center of Regio 1 70cm / 2m bands. As the Arrow is basically made for satellite and for Region 2. PD0G build a replica of the Arrow antenne and he did an awesome job. Some more info…

3D Stand for the FT-817

Just an other quick fix, but it works fine. Source: FT817 stand

20m Delta Loop

Today was a nice day to build the delta loop. Using the calculator on the website of WS6X.  Resulting in 21.6m of wire… after cuting off some 40cm it now works fine across the band. 

Balun 4:1

Building a balun for a delta loop. I had same advice as at first i wanted to build an air coil balun. But i was told to use an ferriet coil. So i did.  Just an simple straight true 4:1 balun. There are loads of pages describing how and why it works and how to…

Universal Dipole Box

For my Outdoor QRP operation I already have several antenna’s but missing in my box are dipoles. So I decided to build a small little dipole box. It’s a real quick and dirty construction. The pictures will say it all: It’s just a box with a bnc and 2 bolts. In the first picture I used…

K7QO Noise Generator

I build this just because i wanted a quick and easy project to kill some time. I found the schematics online (PH2LB and Here). All the necessary parts i had laying around. In the end it looked like this: It give a fair a mound of “Noise” according to my scope.   I have put…

The measurement tools

This weekend I reorganized the shelf to fit my measurement tools….


At my birthday party someone showed up with a awesome old radio. An old SEM-35 manpack radio. SEM-35 Specifications Frequency Coverage 26 to 69.95MHz Channels 880 spaced 50kHz Modulation F3 (FM) Deviation 15kHz max. Transmitter RF Output 150 mW or 1Watt Frequency Stability < + 3.5kHz from -40 to +600C Receiver Sensitivity < 0.5 micro…