Pluto Plus

9 September 2022 - Trying to get the built-in ethernet to work - no joy.  Here's the inside of my Pluto Plus.

2 September 2022 - I finally added the 40MHz external reference to my Pluto Plus - using a Leo Bodnar Mini set at 40MHz and added a switch to enable/disable the external reference.

6 June 2022 - I have added the 1W amp and have it and the LNA switched with the USB relay.

19 May 2022 - Here's a block diagram with the W6PQL Latching Relay Driver board.  Block diagram update 6 June 2022.

Video of my Pluto Plus system receiving the 432.370 beacon.

18 May 2022 - The relay I have is a latching relay - it requires a pulse on the RX or TX leads to change it to one of them - looks like https://w6pql.com/latching_relay_driver.htm has the perfect solution - thanks to Herbert AF4JF for this link.  I ordered two of the boards.

17 May 2022 - I have the USB relay connected which works with SDR Console - it routes/switches TX and RX connectors out to a single antenna. and will eventually switch the LNA off during TX.

Testing a broadband LNA below.   

16 May 2022 - Pluto Plus arrived - more on this to come.

Si549

1 September 2022 - Calibrated my Pluto to match the Si549.

31 August 2022 - I GPS locked my Pluto Plus and the signal from the Si549 is very stable.

30 August 2022 -  I also received some Si549 chip samples and I purchased an evaluation board to test them with.  I was able to use their software to change the frequency but it did not retain the changes after a power cycle - I'm looking into this.