VSWR bridge for Spectrum Analyzer

A VSWR bridge is a very nice add-on to a Spectrum Analyzer when you want (or need) to measure reflection loss of for example an antenne or load (termination).

Home made VSWR bridge

Home made VSWR bridge

The VSWR bridge fits mechanically on a DSA815 Spectrum Analyzer.

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RF load for dummies

m4s0n501

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.

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Sequencer

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

Top view sequencer

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Video Switch for ATV

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.

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Overview of video switch unit.

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RF Power Meter

A power meter is almost a necessity when building your RF equipment. Since I did not have one I decided to build one myself.

SAM_0522_2

Analog meter with homemade scale

 

 

 

 

 

 

 

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