LA9SSA

Visualizing noise in the surroundings using an SDR, a rotor controller, hamlib and GNU Radio

December 5, 2018 / LA9SSA / 0 Comments

The scripts we developed during the spring and summer for measuring and plotting the reception pattern of an antenna turned [… Read more]

November 21, 2018 / LA9SSA / 1 Comment

Speaking of the 80m dipole last week: The ropes holding up the 80m and 160m dipoles have sorely needed replacement [… Read more]

November 7, 2018 / LA9SSA / 3 Comments

QSO machine LB6RH, producing both QSOs and network traffic to be caught by our Python scripts.

We previously outlined a method for using rotor control messages issued from N1MM, a Windows program, to forward control messages [… Read more]

October 3, 2018 / LA9SSA / 1 Comment

We’ve identified unwanted spurious emissions from LA2SHF when installed at Vassfjellet, and taken it down for the time being. While [… Read more]

September 5, 2018 / LA9SSA / 1 Comment

A morse sequence diagram before and after the overflow corrections applied in this blog post.

Sampling at high sample rates from an SDR in GNU Radio with slow blocks in the flowgraph (for example writing [… Read more]