Hans, This is a very low-priority request, but it came to mind recently as I was playing with different TCXOs for the Si5351A Synthesizer Board. What is the possibility - on you next run of boards - o

#progrock #synth

Hi Alan 27MHz was required for my algorithm to get the WSPR tone spacing exact on 2m. On all lower bands than that, 25MHz or 27MHz both produced exact solutions. Therefore I chose to use the 27MHz cry

#synth

Mikael : I suspected that those resistors were acting as pullups and that explained why there were no instructions to remove them. Thanks for confirming that. Cheers Michael VE3WMB P.S. I am enjoying

#si5351a #synth

Wow, I think I have both of them Hans! Now I need to come up with a project to use the 10 Mhz crystal. I wouldn't mind sending them back but I suspect postage would be prohibitive.

#synth #ocxo #si5351a

Typo: Instead of "492, ...518, and ...497", I meant "492, ...497, and ...518". Oops. -HF

#u3s #synth

Hans, Had a crystal oscillator issue a few years ago that cause a lot of head scratching. We had been producing said module for several years with no problems, when suddenly we had a rash of dead modu

#synth

Am a masochistic PIC programmer, calculating the Si5351 parameters in raw assembler. Yeah - painful, but I enjoy doing weird math. Sticking with Hans' approach where Silicon Labs AN619 app-note "a+b/c

#firmware #synth

Thanks Hans for clearing up the module's behavior when 'out of circuit.' As I alluded to in the other thread I mistakenly created, the module is currently working and my U3S has been running overnight

#u3s #synth

Al, The "Subject" line is the topic. Add to it, or change it produces a new topic. (Unless there is a way to add something without changing the topic?) 73 Alan G4ZFQ

#u3s #synth

I wanted to free up my IC7000 for "real" work so I purchased a few kits / modules from QRP Labs hoping to build a dedicated NDB / Navtex (and/or DGPS) receiver. The result is a GPS disciplined VFO dri

#polyphase #synth #qlg #rcvr #vfo

Thank you Hans! That is what I thought, just wanted to confirm that it was probably static and not mis-configuration... Oh well... I guess I zapped it... will have to order a new one since all my othe

#synth

Hi Bob When using ProgRock for the RX module you do not need to isolate the Clk0 output or provide any buffering. For some uses of the Si5351A, you may need to provide buffering/isolation. It all depe

#synth