Nov 13 2013
Many people use dummyloads to ‘dump’ the RF power when testing their circuits. If you want to know how much power is dumped into the load you can measure this by switching a coupler in series. This will measure the forward and reflected power. Assuming the load is 50 ohm, the reflected power will be very low and therefore not of interest.
Nov 2 2013
For my 70 cm setup (TS930 – MMT432/28 – LPM432/100) I had the need for a sequencer that generates the proper timing to switch all on/off in the correct order.
Top view sequencer
Oct 31 2013
After being active with ATV on several bands with multiple video sources, I felt the need to have a video switch. With this I do not have to plug one video source to another anymore, it saves time especially when working in a contest.
Overview of video switch unit.
Jun 16 2013
A power meter is almost a necessity when building your RF equipment. Since I did not have one I decided to build one myself.
Analog meter with homemade scale
Jun 4 2013
I decided to upgrade my old IC202 with some new features, a long time ago I already added a new frontend based upon a BF891 and SBL-1 but I now wanted to have a digital readout to have a better and more accurate frequency reading.
