QO-100 version 1 - May 2019
SSB Mode, DX patrol- PA 3w output – offset dish 80cm. Helix 4 turns HOMEMADE – LNB octagon.
QO-100 version 2- November 2019,
SSB mode, Homemade GPSDO 10 Mhz - Homemade Cavity Pass band filter - Homemade RF power Amplifier /10W – Circulator ANATECH AM2200-2500 25W- Homemade Dual band feed – Offset Dish 80cm. - 5,5W OUTPUT
QO-100 version 3 - January 2020,
SSB mode, DX patrol, 5,5w - offset dish 80cm, Dual Feed Homemade – Down converter Kuhne.
Project Version 4: add the DATV Mode.
On the bench during containment.
- DC Power supply 12/28v ready.
- Up converter, waiting for couple of parts for mods of the Adalm Pluto.
- RF power amplifier 100w
- DATV receiver Minitioune V2 ready.
- 2m prime focus dish for TX.
- 80 cm offset dish for RX.
UPDATED on time.. TNX
LDMOS transistor AMPLEON BLC2425M10LS250 inspired by JIM SMITH G7NTG
And Ampleon test circuit - Datasheet here: https://www.ampleon.com/documents/data-sheet/BLC2425M10LS250.pdf
During the lockdown and while waiting from express courier for the parts to modify the Pluto, today boxed the Adalm Pluto from a cutted box for external hard drive.
Remains to be done ...
1) GROUND CONNECTIONS OF THE 2 USB CONNECTORS
2) TCXO. change by a better new one 0.2 ppm, or put to QRP coaxial and connect to an SMA socket to inject 40 MHz reference frequency.
3) Add Dual PTT switching board from F5UII (SHOP CHIP)
4) Add heatsinks on IC’s (Raspberry-4 heatsink kit)
5) Expanding the original frequency range from 70 MHz up to 6 GHz.
- 30 April 2020.
Today, some measurements on the 2.4 GHz UP converter starting from the Adalm Pluto .. before checking the entire amplification chain with my small Windfreak SynthNV.
As can be seen the maximum output power of my unit is + 2.98 dBm, say 3. The manufacturer says + 7dBm Max, so I should be in the average ...???
