Dave, I'd be very careful replacing that diode with the inductor - the diode is there to prevent accidental polarity reverse power input from destroying the MINI. I'd seriously consider getting a powe

Sorry Curt, but the TCXO (or 27 MHz crystal if no TCXO) has no effect on the RTC. That’s controlled by the frequency of the 20 MHz crystal oscillator on the ATMEGA328p MPU. W0EB

Hi Mont, Yup, I now have AVRDudess. Got it set up to run my PickIt2/homebrew 328p programmer with a ZIF socket on it. It sure makes things easier. Jim

Thanks, but I believe I actually do if I’m programming it outside the QCX with my stand-alone programmer. I have received all the info I needed off list as I requested, thanks Mont. Jim

Anyone have the current fuse settings for programming the 328p in an original QCX? I got asked by a friend if I could upgrade the programming on his early 20 meter QCX and I can't find my original fil

Thanks for the sentiment Jack, I just recalled a humorous item from my early teaching days. I had a teaching partner/assistant for the basic electrical, electronics classes. Each class ran for 2 weeks

Couldn’t agree more Jack, I spent 20 years in the U.S Army Security Agency. The first 5 were as a “Morse Intercept Operator” where I learned CW and the last 15 were spent as an electronic equipment re

It might be cheaper in the long run for you to get your own 3D printer, LOL. The complete stand/battery box combo takes almost 8 hours to print in medium quality and close to 12 in high quality even p

#qcxmini

Anthony was very nice and actually designed a battery box for his latest case that had slightly larger diameter and shorter battery tubes which allowed me to actually wire up the batteries and bring t

#qcxmini

No, I don't. I'm hoping Andrew has a link to that larger board he used and shows in the latest picture in this thread. Jim

#case #enclosure

Hey Anthony, when you get time, need a link to the battery management system you show in the pictures. The little ones I got off eBay are no good - they have wrong wiring information and the first one

#case #enclosure

Just got done printing the new Left side battery box/end cap. Big problem, the battery tubes are too small in diameter. 18650 batteries fit so tight it’s next to impossible to remove them after a tria

#case #enclosure

Nice job on the .stl file Anthony! I just got done printing the base, the battery box is running now and will be done in a bit under 2 hours with the battery box cap to go after that. I have batteries

#case #enclosure

NICE! I like it better than the one I remixed and posted on Thingiverse! You gonna post the .stl for this one on T-verse? Also what is that PC board device next to the battery? A source for that might

#case #enclosure

In keeping with several other replies to Pierre's topic here, I group I work with uses the 5351 in several of our projects but we don't use them in near the quantity that Hans @ QRP Labs does. When th

Just swap the A and B wires to the encoder. That will fix it. Jim, W0EB

The date is not programmed to display, only what you see on your LCD. Starts out with firmware version# then time on the first line and satellite tracking info on the 2nd line. Hans has said he will p

Forgot to mention that I had some SMT USB micro-b female connectors on hand and carefully soldered on on the right hand side. Mounted in Dean’s 3D printed case, there is enough room for a right angle

Got here pretty fast (TNT/FedEx shipping). TNT tracking info showed that it got to the first TNT location in Turkey on June 3 and arrived here (June 7 @ 0835 Central Daylight Time) so that's pretty de

Command is $$QFU not $$QFY according to my book. W0EB