I am now able to have QSO's via the satellite, but I am only using Pluto to Analog Devices CN-0417 preamp to POTI, so very low power. I get reports varying from S2 to S7, but this is using a 1.8 metre prime focus dish. I was amazed to be heard at all via SSB. Initially I tried an AM carrier and looked for it on the Goonhilly web SDR. I was surprised to see it, and reasonably strongly, too.
But I have since been told that I should be much stronger, I don't see how though, I took painstaking trouble setting up the dish, my only doubt is I set the POTI aperture exactly the same distance from the centre of the dish as it was on the original manufacturers set up. So it's the same dish to aperture of the feedhorn as the original LNB was. I am having to presume that is still correct...?
I was also told a dish of this size should show a reception of the middle beacon much stronger than I see here, too. I am sure they said -30 to -25 dBm, which sounds very high. I am seeing about --50 dBm at best, but I have no idea if the SDR Console "meter" needs calibrating, or even if it can be. The one in HDSDR I use for HF is calibrated against an in calibration signal generator, so I know that's pretty accurate for HF.
I have spoken to a few saying they are running 200mW and I hear them +20, but when I look at their set ups on QRZ they have a 20 Watt PA in the chain If 200 mW is giving a 59+20 they might as well sell the PA
I managed to temporarily knacker the Pluto somehow, but to my amazement brought it back to life with the recovery tools. It was whilst I was installing v0.33 firmware, not sure what occurred, but it lives to fight again!
I have now locked the Pluto to a 40MHz output from a Leo Bodnar GPSDO, and the Bodnar's other output channel locks the LNB to 25MHz, that all went well EXCEPT when I first removed the xtal oscillator form the Pluto's PCB and soldered a coax and SMA bulkhead connector, the Pluto stopped working. I thought I'd killed it somehow, but I had been very careful. Eventually I probed the incoming reference signal pad with my `scope and there was nothing there at all. Turned out my Chinese cable with pre attached SMA, sold as Teflon, was NOT Teflon at all, and had melted internally when I soldered it, shorting inner to braid. I threw it away and up made up my own assembly, with good Teflon coax and a branded SMA, and all was well.
All good fun...
I'd be curious as to what strength people hear the middle beacon on various sized dishes.
Good luck Phil!