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https://ae5x.blogspot.com/2025/04/timing-issues-remain-with-latest.html 73, John AE5X

Hello All, I wanted a dimpled knob for the front of my zBitx, so I turned to Thingiverse to find a suitable knob and adjust the size to what I wanted and 3D printed my own in black PLA. The knob I've remixed is 10mm tall and 30mm in diameter, and will sit low to the front panel of the radio if you [very carefully] trim the length of the rotary encoder shaft. Please be careful to not bend the shaft of the encoder as you are doing this. I've shared the files and full trimming instructions here https://www.thingiverse.com/thing:6998700 73 de VE6LK

Just for the sake of argument, let's say I do something stupid and my zbitx will no longer boot. But I have done a SD card copy to an external usb with new UUID. How do I boot from the USB so that I can copy the system back to the internal SD card thereby restoring my zbitx and making it bootable again? Leo, AI5II

Wondering when it would be possible to order a z bitx ? Thanks

Just curious. If after running ./update, if I run sudo apt update/upgrade will the zbit be bricked? I'd be interested in compiling hamlib 4.5.4 and wsjt-z on the zbitx. I do have wsjt-z running on my laptop using a raspian image but need to install all the dependencies to fo the compile on the sbitx. Leo, AI5II

The documentation should be here in the next 12 hours. But here is how you upgrade the firmware: 1. Go to https://www.hfsignals.com/index.php/zbitx/ 2. Download the uf2 file to your computer. 3. Unplug the zbitx power. 4. Keeping the knob button pressed, attach the supplied USB cable between the PC and the CAT USB port on the zbitx. 5. Remember, you have to attach to the CAT USB port, not the other. 6. Now, let go of the knob pressed. The zbitx front panel will light up with an all grey screen. The Pico controller will show up as a drive on your PC. 7. Copy the .uf2 file from the PC to the Pico controller. 8. You are done, remove the USB cable. Start up the zbitx. 9. The latest firmware should show up on the front panel.

Hello Ashhar I've received my zBITX this morning and have been listening on the bands in different modes. So far all seems to work as expected and it is fun to use this little rig. But I'm lost by trying to send CW with the built in keyer. I'm not used to Lambic A after using Lambic B for 40+ years. When set to Lambic B you get a straight key. Is Lambic B not yet implemented or have I set something wrong? If not, will this be included in a firmware update? Taking an additional external electronic with Lambic B keying half the size of the zBITX for portable use was not my plan... Many thanks for this otherwise nice rig and for any info 73, Gerald - HB9CEY

I got my zBitX this evening. Got it on my wifi to sync the time. I can see ft8 decodes. If I TX the sound comes out of the speaker instead of going to the radio. Zero output on a watt meter so no RF at all. I suspect the sbitx has the wrong input device configured, but I don't see a way to change it. Additionally, the insert that came with the radio has a url and a QR code instructing me to download the manual, but there is no manual at that url. Thanks, --ben

In Cincinnati at the moment. Supposed to deliver today in "Winterpeg". We'll see if it makes it. Gerry

Spent about an hour with the radio and so far I'm pretty impressed with what it can do for that price. Firstly, follow the videos on YouTube. Connect to your WiFi and then update all software, the process is simple and elegant versus some other radios I have. Fits my needs for how I operate. Did I mention the value versus cost? Getting out in the field tomorrow. Ed N2KVZ

What are other seeing with the power levels? I have a QRP Labs dummy load that I connect my volt meter to get a peak voltage reading. The voltage on the radio is 7.7v, drops down to about 6.8-6.9v when tx. The Driver is set to 100 on all of the tests, and the mode was 2TONE. When I tx into the dummy load. Based on the calculation its showing I'm outputting about: Band | DummyLoad | Radio 80m 2.5w 3w 40m 2.8w 3w 20m 2.4w 3w 17m 2.8w 3w 15m 2.2w 3w 10m 1.25w 2w I'm thinking that's on the lower power levels than I would have expected. Are others seeing the same thing ? https://qrp-labs.com/images/dummyload/dummyload.pdf

Couldn't download zbitx_front_panel_sw.ino.uf2 from HFSIGNALS page. Downloaded code from zBitx page.- zbitx_front_panel_sw.ino.uf2 dated 3/30 9:15 AM. Xfer to zBitx - no response (stays on gray screen) Xfer v1.04 and zBitx reboots to 1.04.........

Hi all - While everyone has been busy with s and the z I've gone back to basics with a bitx20 inspired, all-analog SSB rig. In a fit of "spontaneous construction" [(C) N2CQR] I put togeter the receiver over a couple of days. The VFO is a 9MHz rescue puppy from an FT-401 (thaks Pete, N6QW for the $35 eBay find). The Tx PA was already built - leftover from one of my revs of a homebrew sBitx. Audio amp and first mixer came out of a box I call "boards that could be rigs." Had to wait for 5Mhz crystals to arrive from Mosuser so I put most of the rest of the rig together including a crystal controlled BFO (with a junk box crystal). TIA IF amplifiers using boards from Todd at MostlyDIYRF. This rig has soul! Crystals arrived - built the ladder filter with help from the Dishal software, subbed out the junk box crystal in the BFO for one of the extra 5MHz crystals and the rig received great first thing. Something that has never happened to me before, ever. KK4DAS - Amateur Radio Explorations - ham radio blog: KK4DAS MB 20 Transceiver - now Receiving on 20 meters This has been so much fun..... the transmitter should be done this weekend - if my luck continues I will brand this the Miracle 20! 73, Dean KK4DAS

Hi friends, I’m new to these forums and I’m having problems navigating this app; I really don’t know where things are. Please, if anybody could point me in the right direction on how to purchase the Zbitx? A link would be helpful. thank you so much, asis

I wanted to check the 64 bit version without disassembling my sBitx v3. It was possible via changing the boot order. The procedure is quite simple. Just run "raspi-config" utility (in the terminal session and via "sudo"). Then in the advanced options you may set the boot order so that the USB disk is tried before the SD card. With that I could boot my sBitx v3 from the 64-bit version installed (with dd) on the USB pendrive. After successful testing, I could backup the original SD card. I have done it via dd, sending the output to the file on my server (mounted via sshfs). I made a separate copy of the whole /home/pi/sbitx to recover the hardware calibration and my settings. Finally I could install the 64 bit version with: $ sudo bash # wget http://172.19.1.1:8000/sb64p3.img -O - | dd of=/dev/mmcblk0 bs=4M status=progress (172.19.1.1 is the IP of my server, where I have started an ad-hoc http server running "python3 -m http.server" in a directory where sb64p3.img was downloaded.) After that I could mount the /dev/mmcblk0p2 partition and copy the saved configuration files. The whole testing and installation was possible without disassembling the sBitx v3. 73, Wojtek SP5DAA