开云体育

sBITX V2 TX problems Have received a new sBitx V2. RX is OK! TX no output, no matter in which mode. PTT switches correctly! Hardware is OK, works with software V1 without problems. Faulty

Gordon, The early QDX kit builders (I was one) had to rework the first released boards of the QDX to remove four SMD 47uH chokes and replace them with through-hole inductors.? The reason given was

1.? This thread has been running since Oct 6, now 15 days.? ?Many, many sets of data have been presented, including photos of the measurement setup.? ?There were initial unforced errors due to a

I’m trying to understand the receive filtering in sBitx. I’ve been studying and experimenting with Ashar’s well commented code in the function rx_process in sBitx.c. As I understand it, the

This site’s data graph suggests that some of these diodes could work in our application. Do we just have some bad ringers? https://www.qsl.net/in3otd/electronics/PIN_diodes/1N4007.html

Look at the dates on the posts.? Those are very old links that are no longer valid. 73 Evan AC9TU

I think Carl was referring to a separate (breakout) forum just for the sBitx, not an actual breakout board.

Here's a screen recording showing this.

This is what your link resolves to: https://www.phonestack.com/laptop-cho-dan-van-phong/

Evan -- so in this case, I am *using* the 10meter filter.? ? ?Its knee is at 32-ish MHz and appears to be used for 15 meters as well.? ? At least I hope I am! These data seem to prove that we

I have trained myself to love vi. It is a single lightweight editor that is available on every platform from linux to android. It is has a little bit of learning curve of an hour, but you get used to

Not wrong at all. I used 10Mhz, per the instructions, but using the freq counter got me quite close. Thank you.

Again, this unit was purchased from another person. I don’t think that person made any alterations, I can’t see any alterations and nothing looks burnt I made up a small clip lead to try to short

Gordon, The voltage doubler is applied to both input and output diodes.? Maybe the 10-meter filter is turning on enough to allow the harmonics through?? Just a guess. All, Has anyone else seen the

Yes, thanks, Bill and Evan. The 1N4007 is certainly not specified or intended for PIN service ; it just happens to have an intrinsic layer. Not sure how thick, and it’s one very big reason I’m

Gordon, The diode you listed in your post has a max reverse voltage of 50 volts.? That is 13 volts short of the 63 volts I calculate for 40 watts in a pure resistive 50-ohm load.? I have found that

Alsa is always there (it is the driver + userland support). Bookworm uses by default pipewire (on top of alsa), but you can just remove it if it causes trouble. - Rafael

Didn't Bookworm change the sound system? Is alsa supported anymore? 73, -- Dave, N8SBE

You can just install it. I maintain a fork and packages of it for bullseye 64 bit. https://github.com/Rhizomatica/WiringPi Packages here: http://packages.hermes.radio/ But it compiles without

That's good information. Somehow, I got the impression that sBitx required Buster. It may have been something to do with the fact that WiringPi has been removed from the Bullseye