Akademisk Radioklubb

LA1K / LA1ARK / LA1UKA

Author: LA9SSA (page 1 of 4)

Extracting the antenna pattern from a beacon signal, pt. II: Measurements of LA2SHF

In the first blog post of this series, we analyzed the beacon signal from LA2VHF to obtain the enveloping, azimuth-dependent [… Read more]

Extracting the antenna pattern from a beacon signal, pt. I: Initial investigations using autocorrelation

We have published a couple of posts ([1], [2], [3]) on how to measure an antenna pattern by using an [… Read more]

Plotting spotting calls on a map

LA3WUA Øyvind came to me late Monday evening last week, desperate, wanting a map to visualize the calls which had [… Read more]

Using GNU Radio and Hamlib to calculate antenna diagrams

As a part of earlier blog posts ([1], [2]), we developed a couple of tools for measuring antenna patterns against [… Read more]

Satellite dish measurements pt. 3: Fixing a broken RF Hamdesign five band ring dish feed

After we had found out that the problem with our parabolic dish was that the feed probably was broken, we [… Read more]

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