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Q90 is a smd version of a 2n3904. Part number is mmbt3904. The schematic is correct. A few people have used a TO-92 version with success. It is just hard to align, due to the difference. Good luck &

Maybe add it to the files section? Mike

Can I get a copy of that component list as well please.? Thanks Jeff VK3GMO ex WA2GMO

Conrad, according to the schematic q90 is a 2n3904.? What is installed on the board is a flush mounted transistor....if it is a 2n3904 no reason not to replace it with a t0-92 form is there?? Am I

Thanks Conrad; Adrian and Tim.? Yep I can see the inline fuse is a must.? Was also thinking about a master heatsink so the warning about the heatsinks needing to be isolated from each other was

Is the gain slider in wsjt-x in about the middle of its range? ?Does the radio do ok with ssb voice?

Check transistor Q90 . it is what I replaced last time I had the same problem. 73; AB6ST - Conrad [email protected]> wrote:

We got wsjtx 1.9.1 installed on Linux and wanted to try FT8 on the uBITX (with CEC firmware 1.080).? Using the FT-817 setting, frequency selection and PTT work as expected.??Receive is fine but

as AW pointed out,? the Hsinks are not isolated from rail voltage.? In some cases because of the anodising and depending on the plating of the screw used to pull the IRF up to the heat sink,? they

The standard heat sink is to small. To make it worse there is no heat sink paste on them to transfer the heat to start with. those poor Fets get cooked. If you can’t leave your fingers on them

My uBITX was working for cw and ssb but the irf510s were running too hot.? All output dropped to zero, no smoke or dramas and I was sure the IRF510s were fried and I just happened to have four more

I've done some more tweaking for the 3.2" Basic HMI https://drive.google.com/open?id=14TdrAee7sixKKE96n2RNRSx5wE5Oji5C ( https://drive.google.com/open?id=14TdrAee7sixKKE96n2RNRSx5wE5Oji5C ) Enhanced

Yes, setting the screen for 3.5" in the editor will let you use it, it just won't be formatted for the higher resolution 3.5" screen.

I damaged the Nano on the?Raduino board (bad wiring job on my side unfortunately). Is there any place to get a replacement Raduino board (I could solder in a new?NANO if need be, but would rather

Thanks for all the feedback and suggestions.? I haven't had time to work through everything yet, but here is what I have learned: - I get similar hum on a SLA battery.? The voltage is a bit low

Having a blast on 20, with a W4OP mag loop indoors.

Hi Darren, using your 3.2'' hmi file I compiled it to my 3.5'' with Nextion editor, and my display is now larger than before,as large as yours. Thank you very much. But of course I expect somebody

A couple of small notes: 1. Be sure to replace "User" with your windows user name in C:\Users\User\AppData\Local\Temp\arduino_build_692458/JackAlV050.ino.elf or you might have trouble finding your

I had the tx relay get stuck on my ubitx. I replaced it with a standard relay and got it working fine. Might be way simpler than trying to adapt another component.? Got them off ebay from china in 2

Hi Kevin, The VU2SPF solution uses the MCUfriend type low cost touch tft which plugs straight into the Mega 2650 rather than the serial Nextion display. 73 Bob GM4CID