Monthly Archives: March 2013

Today, during some after work hours, I have tested my small amplifier board. It is based on minicircuits’ PSA-545+ and boasts about 20dB of gain, an IP3 of +20dBm, and NF = 0.8dB. Lets see of this is in line … Continue reading →

Today, I have received two more Tranzeo TR-5a-20w’s These are usually broken and marked as such. Because they were used in security business, they will not be repaired, even if this is fairly simple. Just because the company that is … Continue reading →

Tracking high altitude balloons is a lot of FUN. Helium filled balloons are fitted with a small payload transmitting telemetry back down to earth. These balloons can reach altitudes of 35km, depending on the filling level and type of balloon. … Continue reading →