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What interesting to me...? is I've been following this. This is a rerun of the same issue for uBitx V3 series, Sbitx, and appears here now. General issue is pushing transistors for more gain (not

Gordon, Sounds like great progress. Sadly I got rid of my transverters a couple years back when I bought a IC-9700, so I haven’t tried using my SbitX for satellite work. I did experiment with using

RS-44 First CW contact on a satellite. Transmitting via Icom 820H on 2m Receiving via transverter --> sBitx and simulatneously the Icom 820H Conclusions/Data 1.? For SSB able to hear myself (on the

default login is? pi / hf12345 It is a RasPi, so use standard RasPi tools to change password

How accessible is C22? ?Is there a photo showing its location? ?I would like to try to reproduce N3SB's experiment, and replace C22 with a 1000 pF capacitor. ?If that experiment works, the low 2

Tim hHere is a residual remnants of the Resident Ghost o]f the Original Ghost On the Air in all units of the SBIITX and ZBITX..... The remnants of the ghost does some strange things, normally resolved

Working on learning satellites for a few months now, building most of the gear, instead of buying stuff. TODAY for the first time, I heard my own CW by way of the satellite, monitoring an sBitx (V2)

You guys are AMAZING. Gordon KX4Z [email protected]> wrote:

Hi Gordon; Yes - a tuned circuit at the emitter bypass of Q3. LTSpice simulation suggested replacing C22 with 150 pF and R33 with a 100 nH chip inductor. This combination does appear to work, with a

Hi Gyula; Thanks for your suggestions. I do need to look closer at the power filtering to this part of the circuit. Keeping the stray RF out of the buffer stage could possibly be more effective than

I am almost certain that there has been some discussion about what username and password to use when remoting onto a zBitx using RealVNC, but I cannot find it.? So sorry for the repeat, but please

Generally speaking, you can enable usb booting with no sd card on a Raspberry Pi Zero 2. https://forums.raspberrypi.com/viewtopic.php?t=322604

https://magnus919.com/2025/05/the-xenon-death-flash-how-a-camera-nearly-killed-the-raspberry-pi-2/

I finally managed to boot from an external USB on my zbitx. I had to modify /boot/cmdline.txt? on the internal sdcard to point rootfs to the external device UUID. Of course if I remove the external

"This is as far as I have gotten. The Q3 stage may need to have an LC band-pass filter added to it's input or its output to better filter out the RF being picked up from the transmitter stages. I'm

Russell, Check your power supply (or batteries if using). Two of us from our club bought the zBitX at FDIM and bought batteries in the flea market. After about 15 minutes of just listening the screen

I remembered wrong because it was in the 3v3 circuit and the values ??were 47uH and 22uF. -- Gyula HA3HZ

Steve, I remember that it is possible to isolate individual circuits from the power supply with a series inductor and an electrolytic capacitor. It would be worth trying if you are already so deep

On its predecessor, the sBitx, the codec would occasionally go out to lunch (usually on startup) and then you get zilch nada nothing. There have been various improvements in the I2C connections, but

I received my new ZBitx last week and pulled it out for an initial operation today. Mostly checking out FT8, recriving signals and had answered a couple when suddenly the receiver started putting out