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Order 3300 is marked Packed, Ready to Ship (this changed this morning) - hope this helps someone figure out their status. 73 de Lee KX4TT

Hooray! I have finally managed to get both of my V2-versions upgraded with IRF520 mosfets, TVS protection diodes, a separate audio output to external sound card, resistor to drop the mic bias voltage, some protection resistors in various places to ward off my boo-boo's, aluminum nitride insulators, -- I'm more and more impressed with the 64-bit code, now that I'm trying it out. LOTS of great features. I really like the wide-screen LSB/USB display. The Menu-items are great. My biggest issue is that my #141 V2 has a lot of ripple in the 40MHz crystal filter (which the #271 does NOT, huh?) and so I have to have a bit of shaping in the FFT transmit response. I noted that JJ had put in a placeholder for that, but my solution was a piecewise linear correction in two segments. Finally, I got my older code next to his newer sbitx.c and put my stuff in and recompiled. As usually, I made a few screwups like accidentally lopping off a zero from the end of the BFO frequency in the hw_settings.ini file (which made the receiver DEAF!!) -- but hooray, it works now on BOTH V2 machines, and just made an FT8 contact on 20 meters using the ancient linear and my sad EFHW antenna at the family retreat home in North Caroline to prove out everything. SUCCESS!!! Most of the rest of my personal coding was for high school student experiments, so not necessary. With the #271 I have been checking in most mornings to the Florida Phone Traffic Net at sunrise on 80meters, getting 200W out of the linear and they could HEAR me 500 miles away on 75 meters. Many of them are running a kilowatt.... Really nice radio!!! One will stay here in the ancient retreat home in Black Mountain, and the #271 goes with me back to Florida. These work SO WELL now that I think I may encourage others in the group to snap up V2's as they become available and we'll retrofit some of these upgrades for very useful emcomm portable radios. While I was here, I use the -25dB high output electret cartridges to make 2 more sbitx microphones. And also built 4 more "polarity protectors" using my remaining stock of 5 milli-ohm P-channel mosfets. With all the CW improvements, and JJ's improvements -- this is really a fun radio! Gordon KX4Z

I noticed that the 64-bit version of the sBitx application added 60 m (5.3 MHz) band. However, is the LPF filter in a standard, preassembled sBitx v3 ready for transmitting in this band? 73, Wojtek SP5DAA

Is it possible to have JS8Call installed? Forme JS8 mode is far more important than JT9 mode as Hearteat can replace JT8 contacts and the plain use of JS8Call allows me to do real QSO with exchange of informations. I experienced a terrible civil war in New Caledonia since the 13th of May this year, with sometimes all communications lost - no more internet nor phone - and JS8Call was my only mean of communication with the outside world and it worked well with my QRP station - Hermes Lite 2 and QRP-Labs QDX which deliver 5 to 6 Watt - The small size of a zBitx with its integrated batteries would make a wonderful emergency transceiver. Anyway this product looks promising, congratulations f. 73 - Pierre - FK8IH

I’m not normally a voice guy, but we have some local HF nets in our county in Florida. so I’m up in North Carolina 500 miles away, and I have gotten the second (used) version two All modified up with new IRF 520 finals and several other mods as explained elsewhere. It drives an ancient SP – 200 vacuum tube amplifier and I can get past 200 W output that way. On 80 m this is very helpful to try to beat back the absorption from the D layer around sunrise or sunset when a lot of these nets happen this is such a nice radio! A huge screen went in single side band and I can see panoramic display all up and down, and control the bandwidth so easily, and I just discovered it has equalization as well and it just works so very nicely! I’m very used to using a 7300 and about the only improvement it’s got over this is a nice noise reduction, which could be helpful because I think I’ve got some powerline noise nearby but QRN isn’t very bad today and this is just really really really a nice sbitx radio with a much bigger display than the 7300 making it very easy to see signals everywhere. As more of the V2‘s go on the used market, I may try to encourage folks in our local group to snap them up so we can change out the finals and make these other modifications and they’ll have really really nice radios for dirt cheap. I work with a lot of elderly people and price is important to several of them! 73 Gordon Kx4z

The zbitx source code is now available on github. https://github.com/afarhan/zbitxfrontpanel and https://github.com/afarhan/zbitx Please note that this code has not been tested on the sbitx, though it has been derived from the sbitx base. A few things to note: 1. The 64 bit OS didn't have any significant advantage and using its PulseAudio was adding to the auto start required for the zbitx. Hence, this has been tested to compile on 32 bit Raspberry OS. 2. This works with as well as without the front panel. 3. The schematics are also included. This is the version that will start shipping in the next 36 hours. We are finally loadng it up! 73, f.

I know the zBit hasn't been delivered yet. From what little firm information we have, it looks as if this radio would make an excellent unit as a tunable IF to work into a transverter for operation on frequencies above 30 Mhz. I won't be doing this with mine, but it's a thought. One thing I do want to do when I get mine is to install a couple of PDF files that I have prepared as databases for DX work. Those of us who work the satellites might want to install GPREDICT. This is a tracking program, and it is available for Linux. I don't know if it is available for the Pi, but it is for Intel/AMD CPUs. These thoughts might also be good for the sBit. Gerry Sherman Sent by the Windows 11 Thunderbird

Now that the audio issue has been fixed, I proceeded with alignment of BFO and Frequency. For the most part, after viewing multiple videos, I did the alignment mostly by ear. It sounds good, and frequency appears to be spot on. On air reports are fine, both SSB and CW. However, if I am on the Noon-Time-Net (NTN) 7,284 LSB, I notice if I go to USB there is no change in the audio. Sounds just as clear as when in LSB. If I use CW to check into the NTN, dial set at 7,283.30, same thing. No change in the audio on either USB or LSB setting. Is that normal for this radio? No other radio I own acts like this, thus the question. Thanks, 73 Richard AG5M

I wanted to install the sBitx software to another SD card to have a backup. I downloaded it from https://drive.google.com/file/d/1T0cUdQjLZ-0lBFqwywaNBh3rToGb4UJ3/view?usp=drive_link (as described in https://www.sbitx.net/ ). However, an attempt to do on my laptop (in your case instead of mmcblk0 you may need to use sdX where X is another character): dd if=sBitx_3.21.img of=/dev/mmcblkp0 bs=4M resulted in interrupted writing due to lack of space on the SD card. So I had to reorganize the image. Please remember that the procedure describe below involves running potentially dangerous commands as root. Be sure, that you don't run them with incorrect device name. Otherwise, you may destroy the filesystem on your workstation or laptop. You do it on your own risk. I hope that I have not mistaken in the description below, but I don't give you any warranty. You must understand what are you doing. As root I have mounted the image: losetup -P -f ./sBitx_3.21.img I have checked which loop devices where assigned to it: losetup -a In my case it was: /dev/loop0: [64770]:61762171 (/home/wzab/sBitx/sBitx_3.21.img) I have verified that the partitions were detected: ls /dev/loop0* /dev/loop0 /dev/loop0p1 /dev/loop0p2 I have resized the the filesystem on the second partition of the image (in your case another loop device may be used, see results of the previous step): resize2fs /dev/loop0p2 20G resize2fs 1.47.2 (1-Jan-2025) Please run 'e2fsck -f /dev/loop0p2' first. The first attempt failed, so I ran the suggested command: e2fsck -f /dev/loop0p2 [...] rootfs: 269323/1933312 files (0.1% non-contiguous), 2387299/7725184 blocks An additional advantage was that I learned how big the filesystem is: 2387299 4KiB blocks (9778376704 bytes). After its successful completion I ran resize2fs again: resize2fs /dev/loop0p2 20G resize2fs 1.47.2 (1-Jan-2025) Resizing the filesystem on /dev/loop0p2 to 5242880 (4k) blocks. I checked the size of all partitions in my image: fdisk -l /dev/loop0 Disk /dev/loop0: 29.72 GiB, 31914983424 bytes, 62333952 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xf8f9cbd4 Device Boot Start End Sectors Size Id Type /dev/loop0p1 8192 532479 524288 256M c W95 FAT32 (LBA) /dev/loop0p2 532480 62333951 61801472 29.5G 83 Linux So I need to add 256 MB for VFAT partition. To be safe, I resize the image to 21 GB: losetup -d loop0 truncate sBitx_3.21.img --size 21G fdisk sBitx_3.21.img In the fdisk I used p command to print the partitions: fdisk ./sBitx_3.21.img Welcome to fdisk (util-linux 2.40.4). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk ./sBitx_3.21.img: 21 GiB, 22548578304 bytes, 44040192 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xf8f9cbd4 Device Boot Start End Sectors Size Id Type ./sBitx_3.21.img1 8192 532479 524288 256M c W95 FAT32 (LBA) ./sBitx_3.21.img2 532480 62333951 61801472 29.5G 83 Linux It is clear that the second partition spans outside the image (sector 61801472, while 44040192 sectors are available) I correct the partition table. I write somewhere the start sector of partition 2. Then I delete the 2nd partition by pressing "d" and "2" Command (m for help): d Partition number (1,2, default 2): 2 Partition 2 has been deleted. Then I recreate the second partition, by pressing "n", "p" and "2": Command (m for help): n Partition type p primary (1 primary, 0 extended, 3 free) e extended (container for logical partitions) Select (default p): p Partition number (2-4, default 2): 2 First sector (2048-44040191, default 2048): 532480 Last sector, +/-sectors or +/-size{K,M,G,T,P} (532480-44040191, default 44040191): Created a new partition 2 of type 'Linux' and of size 20.7 GiB. Partition #2 contains a ext4 signature. Do you want to remove the signature

OK, Mr. clueless here. I tried the .\build sbitx On the new image with 64 bit operating system and it didn’t work. Something about missing make file. I know I could probably figure this out, but somebody probably knows the answer right off the bat. What do we have to do in order I’ll the new 64 bit version on the 64 bit image that was so kindly provide provided?? I must be missing something. Now that I have it running, and I have upgraded the hardware on my 2nd sBitx, I want to start tinkering with software things again!! (Full report on the hardware upgrade coming soon. It went way better than expected. I found easier ways to do things.) gordon kx4z

i am trying to upload reedsbn firmware in my ubitx 6.1. i got below error messages in arduino ide. ''Arduino: 1.8.9 (Windows 10), Board: "Arduino Nano, ATmega328P (Old Bootloader)" Sketch uses 30558 bytes (99%) of program storage space. Maximum is 30720 bytes. Global variables use 815 bytes (39%) of dynamic memory, leaving 1233 bytes for local variables. Maximum is 2048 bytes. avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x94 avrdude: stk500_recv(): programmer is not responding avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x94 Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.''