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Transzorbs. Part of the PKE6 (letters rearranged?) series. Much better. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch –

I'm pretty confident the 'crashiness' has to do with the amount of power being drawn. I'm thinking the USB2 SATA drive works OK because it draws less power from the USB port than does the USB3 NVMe

I'd also would like to say we deeply believe in the project, even in the spite of the initial version problems. The sbitx is as an ahead-of-time radio, with wideband capabilities and uncountable

If I remember right, there are also avalanche breakdown diodes that aren't zeners and have a very quick reaction time, which might do the job.? I also remember a circuit from years ago that limited

The down side of those diodes are, of course non-linear behavior and flat-topping leading to harmonics and splatter. I use those on MOSFETS and LDMOS when the parts are very expensive. But on these

Farhan, Gordon; I have back-to-back Zeners from the final FET Gates to Ground on my DE. (No series resistors) Before installing them I tested how well they would clamp at RF frequencies, due to

It needs more experimentation, it is a simple and interesting experiment to carry out. This lore of zener is very prevalent among hams. - f

Thanks, David...the kind words are sincerely appreciated. Jack, W8TEE

Ashhar, Well said ole Master of electronics!!!!!!. Jack ,Well said to u too ole Master of electronics too. Remember folks, this is totally open sourced, and allowed to be ,odded and hacked.following

Surprising. Is that because of the capacitance of the diode? What happens if you reduce the series resistance?

Gordon, This is in response to your idea of adding zeners to protect the gates. It doesn't work. I added a zener 9v diode and 1k resistor (in series). I was expecting this to clip between 9v and

As I’ve said many times, this is an amazing development spearheaded by one extraordinarily gifted person. People who don’t see what has been accomplished are too quick to make complaints I do

This is with regard to Jack's comments about those who know what it is like to take a bunch of components and turn them into that first contact.? I did that over half a century ago.? The parts came

I couldn't say that any better myself, so Ditto!73 de Mike

I am grateful to you and the rest of the sbitx developers! I am enjoying my 'tinkering'! I'm sorry some discover late that the radio may not be what they thought it was. I think you've done a

All: I'm pretty sure that Hans agrees with me that some people here have been far too unkind to Farhan and have ignored all that he has brought to QRP operators all over the world. Farhan, Hans, and

Dear All, I must apologize for the late reply to this thread. I am getting two threads on my inbox so I am not sure which one to reply to, I will probably copy paste this into both the

It is working a LOT better. So there is some weird interaction between Bookworm 64 bit and my USB3 NVMe setup, one that did not show itself on Buster 32 bit. I can't explain it. The important thing

I am the author of that sBITX-n8me software. Unlike the N8ME-ubitx firmware for the ubitx, that repository is not working software. I am using github as online backup storage for my projects. I keep

I agree, but for that to work, `/dev/gpiomem` needs to be in the `gpio` group. In my example above, I show it was not, till I added it back: ``` pi@sbitx:~/sbitx$ ls -l /dev/gpiomem crw------- 1