Akademisk Radioklubb

LA1K / LA100K / LA1UKA

Tag: Radiation pattern

Pattern measurements of PE1RKI (OM6AA design) 3 cm septum feed with Chaparral style radiation part

May 29, 2019 / / 0 Comments

3 cm septum feed in antenna chamber.

We have bought a 3 cm septum feed from PE1RKI (OM6AA design), which we intend to use to become QRV [… Read more]

Using GNU Radio and Hamlib to calculate antenna diagrams

May 16, 2018 / / 1 Comment

Stock photo: Some GNU Radio nerd at the USRP lab at NTNU.

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

Measurements of the parabolic dish in a free path environment

April 11, 2018 / / 5 Comments

LA1BFA operating a test signal source to be measured by the parabolic dish at Samfundet. Photo: LA3WOA.

We’ve experienced some discrepancies with the performance of our parabolic dish. During an earlier post, we  developed tools for measuring [… Read more]

Preliminary measurements of the parabolic dish

February 14, 2018 / / 9 Comments

After having increased the sturdiness of the rotor, and installed the five-band ring dish feed and a 23 cm LNA [… Read more]

Rough antenna pattern measurements using a local radio beacon

January 3, 2018 / / 3 Comments

Measured antenna pattern of a Tonna 2x19 antenna for 430 MHz.

As part of a sub-project for my master’s thesis I performed some antenna pattern measurements on three amateur radio yagi [… Read more]

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