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ZBitx Shutdown Function
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#zbitx
After working with Unix/Linux systems for a lifetime, i know that bad stuff will happen if you just disconnect the power on a regular basis. I still feel a twitch in my fingers if I don¡¯t run sync; sync; sync; before a shutdown or halt command ;) I¡¯ve forked Farhan¡¯s code and added a button on the UI to shut down the Pi Zero: https://github.com/khkremer/zbitx.git https://github.com/khkremer/zbitxfrontpanel.git The "Shutdown" function is behind the "Menu" button. After selecting it and confirming, wait until the LED on the Pi Zero (which you can see through the covered USB connector) stop to blink. I moved the confirmation button a bit up so that it¡¯s harder to fat finger the shutdown with an unintentional double tap on the shutdown button. de Karl Heinz - K5KHK
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Displaying/setting the network connection in SET screen on zBitx
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When using zBitx outdoor, I use my mobile phone as a time source. Additionally I would like to use my mobile to control zBitx via web interface. Unfortunately, my smartphone does not report IP addresses of the connected devices. In case of sBitx, I can find it's IP and connect to it from the smartphone. It would be nice if zBitx could report its IP as well. Another issue is the fact that connecting to the new network requires HDMI connection. I was in a hotel, where the TV didn't offer HDMI connectivity. Thence, I couldn't connect my zBitx to the local network. Adding a possibility to set WiFi SSID and pasword in the SET screen would be a good solution. 73, Wojtek SP5DAA
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zBitx - final messages from my QSO are not shown on the screen
When I use my zBitx in FT8 mode with AUTO set to ON, the messages related to finalizing of my QSO (RR73/RRR and 73) are not displayed on the screen (at the end of the scrollable list). I have to open the log (with OPEN) to check if the QSO was successfully completed. However, when I browse the sbitx.db with sqlitebrowser, I can see those messages in the "messages" table. Is this "feature" somehow configurable? 73, Wojtek SP5DAA
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Today I made a conversion of the original handheld microphone purchased with sbitx, similar to the 'Meeting MIC', which I documented in the attached file. If I missed something, please feel free to ask, I will answer when I can. -- Gyula HA3HZ
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No Receive
2
Bought a Zbitx in Dayton es no receive, Hook a long wire to it es there is no change in signal or noise. Guess it's back to the booth to have a visit with Ashhar in the morning
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No FT8 bandwidth, can't make FT8 contacts
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Been unable to make any FT8 contacts, I discovered that if I look at the received waterfall on a separate receiver the transmission begins with a normal looking bandwidth for a few seconds then drops out and looks like just a carrier, I hear the audio tones on the zBITX when transmitting, any ideas?
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zBitx speaker noise?
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#zbitx
I hear a pulsing noise from my zBitx speaker, even with a dummy load connected instead of an antenna, and both the audio volume and IF gain turn down. Seems to pulse or hum 3 to 5 times per second. Is this normal? Or an issue that needs to be fixed? Anyone else hear this from their unit? If it¡¯s a problem with my unit, any ideas on where I should I look to diagnose and solve this noise issue? 73, Ron
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I just received my zBitx, and have read the manual as well as been following this group for the past couple months. I hope to use this rig primarily on CW and perhaps a little FT8. I am aware of some serious CW issues having been noted on this group. What is the current state of usability in CW? Is there a best firmware to be using? I prefer to use an external paddle with the internal keyer and sidetone, but will a straight key or keyboard CW be better for now? Or do I just need to wait for a fix? I will power the rig with 18650 cells in the attached holder. What is the best way to turn off the rig? Remove the cells? I know that can corrupt SD cards¡ 73, Steve AK0M
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Sbitx high swr on a 1 to 1 antenna
11
Sbitx - antenna switch - swr/power coupler - antenna Previously radio showed power and 1.0 swr on 15, 20, and 40 meters with similar readings on the off board meter. As of this morning swr on the radio and the off board meter show high SFR 2 to 3:1. Removed the radio from the antenna line and replaced it with an antenna analyzer, it shows a perfect 1:1. Another radio shows 1:1 on the radio and the off board meter. Previously, maybe a month ago I had the same problem, spent time chasing down the antenna to no avail. Then one day all was well with no intervention at or in the radio. All bands that were workable for the antenna show the same behavior today. Trouble shooting help welcomed. Tim
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FOR SALE: zBITX
5
Going to wait for the SBITX V4. Barely used for SWL plus 4 batteries and a 2-cell charger. $230 shipped within USA.
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Update On Shipping Delays from HF Signals
5
I ordered my zBitx on April 3rd, 6 weeks ago. I sent sales an email and got this response "Right now, we expect your order(#3941) to ship by early next week. We ran into some unexpected hiccups with sourcing some components which slowed us down a bit" Fingers crossed I should have mine next week. That will be 7 weeks from order date. Clearing a spot on my work bench to bring it up. Got a road trip in a couple weeks that I hope to have it ready for Excited and anxious, 73 de KI7PBR Gary
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Hi all, from what I've understood about the timing issues with CW on zbitx, it seems that the CPU load is at least part of the problem. I personally would love an option to switch off the waterfall (either in menu or set options), because I only need it when searching for signals, but not when I have found one. Apart from that, I wonder why the binary is compiled with debug symbols and no optimization at all. I exchanged the "gcc -g" with a "gcc -O3" in the build script, and the CPU load decreased from 60-70% to 45-55% running FT8, so there is quite some optimization that can be done. Interestingly the CPU load is quite higher on CW, which is 65-70% optimized and 75-80% original (unoptimized). I guess this might be due to polling the key's GPIOs instead of handling them via interrupt (which would make the code more difficult of course). Is there a reason why the build script is not using optimization? (for development side "-g" is perfectly understandable, but for "production" side?) Maybe compiler optimization could at least contribute to the puzzle pieces for optimizing CW response. vy73, Peter DL4PIT
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Z bitx poor sensitivity
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Hi all, I received my Zbitx a little over a week ago and have not had time to really try it out. I have noticed it seems to be very insensitive to any signals. When I switch over to my ft 817 signals are strong then immediately back to my zbitx they are either not heard or barely audible. I have varied the if control between 0 and 100 mans have gone the age options to no avail Any help would be greatly appreciated. Thank you -Sean de g0uvm
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Any particular recommendations for a base station power supply for the zBitx? I like to shop Amazon. Thanks ! Jim WB4ILP
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Order # 3869 April 2
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HF Signals : Order Tracker Your Order #3869 Current status : Awaiting processing -------- Wish others would post order #'s if they really mean anything.
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After letting my zBITX sit unattended in Receive Mode for a while, the main RasPi CPU crashes. I have never timed it because I'm not just sitting there watching it. But it seems like it only takes about an hour or so to crash. I am not able to get a SSH connection to the main CPU at that time. The display CPU is still running at that time. While the device is warm whenever this occurs, I do not think that it is a thermal issue because if I disconnect and reconnect the power it reboots and runs fine. I have never stopped the sbitx application to see if something else on the RasPi could be causing it. I have SSH and VNC enabled, but I am not using either of those connections. I do not have anything else running on the RasPi. So, I really do not think that it is some other RasPi appllication. I think that it is probably a sbitx application memory leak. Don't see how something like a character array overflow would occur after just sitting there unattended for that period - nothing is being done on the GUI during that time. This crashing occurred whenever I had version 3.021 installed, And it is still occurring with version 3.052 installed. If you are running on batteries, the batteries may be depleted before this crash occurs. You will never see it. I am using a 7.5vdc power supply. 72, Jody - K3JZD
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You don't hear it from me
2
Hi QRP Labs Hans G0UPL won a zBITx from Farhan yesterday at FDIM :) :) :) It was a random giveaway, random number generator picked Hans's number :) :) :) 73 muhsin TA1MHS
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I tested transmitting from my new zBit into a tinySA with 50 dB of attenuators in between. First the good news, the 2nd and 3rd harmonics seem ok (43 dBc down or more). But I also see spurs at carrier +-2 MHz, and a 2 MHz, that seem to be a higher level than 43 dB below carrier. These 2 MHz sideband spurs were still visible when testing output on multiple other bands, from 40M to 12M. I don't see such 2 MHz spurs when testing my other transceivers, so they don't seem to be from the tinySA. Wierd measurement error? Or is my zBitx bad? Or could this be a hardware design or software issue. Or inter-mod from one of the digital circuit clocks or IO or display, requiring more shielding. I also hear noise on the audio, even with no antenna connected, pulsing at about 3 or 4 Hz. Ideas? Potential solutions? Thanks and 73, Ron, n6ywu
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Order is ready
My zBitx has been listed as packed and ready to go. My number is 3926. Just waiting for tracking info. Thank you Jim KE0VVU
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Image Name
Sat 8:39am
Sat 8:39am