Not sure if anyone has 3d printed a uBitx case yet or not... I really didn't like the idea of assembling into a pre-fabbed case, so I designed my own real fast in openScad before realizing my printer

Ah... apparently I attached a previous version of the file somehow... not sure how that happened. Anyway, this is version 0.2. Lines 98/99 can be commented in or out to print out half the case, which

Had to iterate over a few revisions, but here we go. I'm gonna be lazy about it and not change the locations of the 3.5mm audio jacks, but I will likely get some different audio jacks as well because

Ah, I see how he's putting it together too, looks like side panels, slick design too. Kinda how I was thinking of doing it with laser cut acrylic as well, cut 6 panels and join with 3d printed edge co

Rich, I can post them anywhere people want... or other people can too. I don't have a thingiverse account, but it'd be easy enough to do. Created a folder under the Bitx20 group for the scad file and

Version 0.6 posted to the groups.io files section. A 0.1" shift in the window, as when I was doing all the calipering, the display was actually plugged in one pin the wrong direction. Also updated the

The biggest problem with doing this on the 3d printer (with the design I have) is that it creates a raised, unsupported edge. On my work printer that does ABS + HIPS, this isn't too big a deal, but on

Ashar, Are the gerber files at all open-sourced, or can you provide detailed mechanical dimensions of the drills? I ask, for making my own top-level PCB to replace the raduino/etc, and get coordinates

I'm not looking really for the mounting hole distances, I'm looking for the relative positions of the headers from the mounting holes so that I can create a motherboard that plugs in and replaces the

I actually have the schematics for one that I was going to do as a motherboard, replacing the raduino with an arduino, allow for easy migration to a AD9850-DDS module(s), etc, but I haven't pursued it

Bill, 7 Amps? Can't say I've used a relay that beefy. I'm using IM43 latching relays in my tuner. They're about a buck 50 a pop in volume. I tune at 1W, transmit at 50W. https://www.onlinecomponents.c

The IRF510's have the tab as drain, which is the RF output. I have two IRF530's in my amplifier design on one heatsink that is grounded, have not had any issues. You actually sometimes want a little c

Ah, you're designing for 100W and some pretty low impedances. I'm not designing for that much power / mismatch I guess :) 10ohms, 50W, which is close enough for me and can still tune an SWR of 5:1, an

K3NG provides a good starting point. But I found a few flaws in the algorithm that he uses, at least so I think. Here is the comment I put in my code for my ATU, and my thoughts. Warning: Long read ah

Glenn, Nice PCB layouts! Digging your projects as pictured on QRZ... Do you have schematics/etc posted anywhere? Love seeing other's homebrew stuff. For now linear SWR-only tuning works, but eventuall

Hello all, As I'm doing a motherboard mod, I'm looking to incorporate a bunch of mods into one PCB. Right now, what I've got going are the following: * A tuner + SWR Bridge (phase detector maybe?) * A

My concept is to create a 6" x 5.5" PCB. It would go on top of .5" standoffs on top of the uBitx main PCB. One would remove the raduino, save the display, discard the nano/raduino (or better, use for

My current tuner PCB that I use on the 50W amplifier is 2" wide and 4.5" long, 2 sided, 7-inductor, 8-capacitor, including the arduino (leonardo) control circuity (caveat: I have a few components on t

Oooh, I like that idea John. Would be easy enough to do too. Two power inputs, one 7 or 8V minimum for the logic and/or amp power, and a second dedicated power level supply. Easy enough to do with two

Dave, I agree with many of your points, very specifically, the AGC. I tried listening in with my uBitx once I got the case wired up, and then promptly had my ears blown off by a nearby static pop or s