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Peter,? GPS frequency discipline, time, and Maidenhead grid square has already been done for the Radino/BITX40. The sketch is located in the groups file section. Do a search on

Designing and building a crystal filter with a particular bandwidth from a collection of crystals nominally of the same frequency is an art in itself. For best performance, the individual crystals

By design, in part.? The caps and termination impedance play a part. But also, the bandwidth of a crystal filter should be proportional to the frequency at which it is used. So a crystal filter at

jgaffke@...> wrote: For a similar scheme, Paul M0XPD has a Sprat article about his parallel IF SSB/CW rig: http://m0

?That's ham radio!!! We are building a stock of people with very unique skills in both radio circuity, antennas, communications, strategies --- who can serve as a reservoir to assist the nation in a

I'll do the sketch when I get off work. I do realize there may be bad things on the board....and I will run through the video, but tonight I will focus on the one bad thing we've already found. I'll

The thing is, we ARE getting a peep out of it, but only at 25 mhz so we are trying to figure out why that is. The other hardware doesn't matter in this instance because I have disconnected the raduino

"Ok, lets try this. Load Gordon's 25 MHz sketch. Find the signal on the HF rig. Edit the sketch to change the freq from 25 MHz to 26 MHz and upload. Is the signal still at 25 MHz or is it now at 26

Hi Allard, if I switch on ?= RADUINO V2.02. and Touch keyer OFF even I touch the two capacitiv sensors.

Ok, lets try this. Load Gordon's 25 MHz sketch. Find the signal on the HF rig. Edit the sketch to change the freq from 25 MHz to 26 MHz and upload. Is the signal still at 25 MHz or is it now at 26

Loading sketch after sketch hoping to get a peep out of the thing is a waste of time. If one doesn't work, none will. Go back to the troubleshooting video and work your way through the hardware to

No worries,? Vince. Yes...only thing connected is the usb

"Yes...I did this AFTER I reported here. So, it worked the night before last, Farhan's sketch failed, Gordon's sketch failed, then I retried the 25Mhz sketch and it worked again. Note that I loaded

Farhan posted earlier that he'll check into the missing raduino purchase link on the website. Are all wires (except the usb) disconnected from the raduino for these tests? I know I'm getting redundant

I noticed that as well.? The "Wiring UP" schematic on both pages is incorrect and needs to be corrected or there will be many "Dumb" questions regarding why CW won't work with standard keys.? Also,

And Gordon.... I don't consider it a bad thing if the raduino is bad. I consider it a raging success. I went into this thinking something was broken. If we are able to find the broken thing so it can

Very helpful suggestions , all!! Sent from my iPhone

It is hanging in the air about an inch above anything...supported only by the USB port. I do this with all my little boards if I can...make sure they can't get grounded in bad places. Yes...I did this

I've also discovered that with a small speaker like you have in the picture, you can take a thick rubber band, wrap it around your head and wedge the speaker between the band and your ear. The

Ok, replying to myself here. Like I said, I'm not convinced there's anything wrong with the Si5351. Is the raduino mounted in the case or is it out by itself? If it's installed, remove it so we can