Thursday, February 20, 2025

QO-100 Portable setup project is finished...

 The portable setup for QO-100 Geostationary satellite for portable and Emergency operations is finished. 

The heart of system is the LibreSDR (with Tezuka 0.1.0 firmware), an 50 db LNA preamplifier and SGLabs Power Amplifier with 3,5 turns helix antena (IceCone type) for TX.

 On RX side there is a BullsEye LNB and Bias-T insertor.

Soon from KM36VC and KM35 Grid locators...!!!!








Friday, January 24, 2025

SV5BYR QO-100 satellite Portable setup...

 

Portable QO-100 setup in progress. All components (except LibreSDR) are under way from AliExpress and this is the design of setup. 
Target is to be ready by 14 Feb 2025 that is satellite birthday and operate from KM36CV and later from KM35 grid squares.
More pictures and explanations come soon.
Stay tuned....

Sunday, January 12, 2025

ZynQ AD9363 Libre SDR at Shack...

 


Playing with new toy for my QO-100 portable operations, testing Tezuka firmware.

Friday, January 3, 2025

Monday, December 18, 2023

49:1 UN-UN for EFHW Antenna...

 UN-UN transformer construction for HF use (1-30 MHz)



 The winding...

 


 Boxed...

 


Test with NanoVNA from 1 to 30 MHz (without 100pF Capacitor)




Adding the Capacitor to improve higher bands...




Success...!!!  Ready to install.


Monday, December 11, 2023

ISS Primary School Contact from Dodecanese...

 ISS Primary School Contact from Dodecanese

we are ready...!!!!








14 December an ISS contact with Primary School of Zipari Kos, Zipari, Greece
The amateur radio ground station for this contact is on the island of Kos in the Dodecanese in Greece. Amateur radio operators using call sign SV5BYR, will operate the ground station to establish and maintain the ISS connection.
This is a direct contact via Amateur Radio allowing students to ask their questions of Astronaut Andreas Mogensen, amateur radio call sign KG5GCZ.
info school
The Primary School of Zipari is located on the island of Kos in the Dodecanese in Greece. The Island of Kos, with a population of 35,000, is in the southern part of the country. The school serves 400 students aged 6-12 and 45 teachers, and participates in innovative programs such as European Erasmus+ programs and often takes part in Pan-Hellenic competitions.
This year an Astronomy School Club was formed to prepare students for this ARISS contact. Other student activities include participation in the ESA Moon camp challenge (2nd and 6th grade students), robot building, how to track the ISS, and amateur radio communication (including morse code).
The downlink frequency for this contact is 145.800 MHz FM and may be heard south europe.
The radio contact is at 15:17(Greece) - 13:17 UTC
The public is invited to watch the live stream at https://www.youtube.com/channel/UCVW_nsutRMEfS2e8tURrltw