My first CW QSO using QO-100

Using a setup for which I had made done some calculations, tonight I was testing the QO-100 (CW / 2.4 GHz on the uplink and 10.4 GHz on the downlink) when a German station (DL3GAK, Udo) called me.

Despite being with the helix antenna (home made) in the hand, outside the window (!!!!), the signal produced is more than enough to make QSOs.
My performance as an antenna rotor was poor because I produced a lot of QSB when I’m looking to other stuff…

Next step will be the production of more helix for the OMs of the Quinta do Lambert Amateur Radio Society*…
Just after that I will put up all antennas in the rooftop. That will take a litle longer because it will be necessary to attach all equipment in a watertight box.

I would like to thank the many OMs who had shared their knowledge, some of which are Portuguese.

TKS ! CU at QO-100!

A close view of the 19 turns homemade helix

* This Amateur Radio Society doesn’t exist but we are 3 OM that live really close by and we like to call ourselves that way…


Wow… A “software PLL” FOR RX QO-100!

G4ELI, Simon, just presented the world with the latest version of SDR-Radio (Release 3.0.7) which incorporate a very useful feature for those who desire to receive the QO-100.
It a PLL-like but made with software.

The software lock into the upper beacon (NB / BPSK) and compensates the drift of the LNB.
So, all those who have a PLL LNB without GPSDO or TCXO could use this important feature to listen accuratley the QSOs on the QO-100.

In my modest view, this a major breakthrough fore a lot of amateur radio operators!

BIG TKS Simon!

Latest version of SDR-Radio could be downloaded here:

I’m not related with Simon’s work – I don’t even emailed him – but I think that we all should support him by donate some amount.
He deserve it!

QO-100: almost there!…

Esta noite dei mais um passo para operar o QO-100…

Tonight I made a climb another step toward QO-100…

Fiz uma helix para o uplink de 2,4 GHz e modifiquei o amplificador de potência para que este trabalhe devidamente, como mostrado pelo
George, M1GEO

Se tudo trabalhar FB (testar antes…), amanhã experimentarei o uplink.

I produced a 2.4 GHz helix to the uplink and modified the amplifier to work properly like advised by George, M1GEO.
If everything work FB (testing…), tomorrow I will try the uplink.


Sim, a minha primeira chamada será em CW, o meu modo preferido em qualquer banda.
Yes, my first try will be CW, my main mode in any band.