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There will be no hardware changes to the circuitry at all. We are using the same gerber for all the batches. [email protected]> wrote:

Mike, Thr cw_poll is not the one the one that is doing the actual keying. See cw_read_key() in https://github.com/afarhan/zbitx/blob/main/modem_cw.c#L312 This is the function that is in turn called

Ashar, I'm an old sbitx DE user, but I have looked at your newest zbitx code a little. Your new change using interrupts insures the state of the key/paddle is updated in a global variable in a very

After so many reports about problems with failed updates I nevertheless decided to update the zBitx this morning - contrary to my intention. With surprisingly positive, unexpected update

JJ's 64 bit code has a button to shut down the Pi and provides a pop up to remind you power off afterward. -- 73 Bob? KD8CGH

To add some strain relief to the power cable I drilled 2 x 2.5mm holes into the battery holder and secured the power cable with a small zip tie.? A spot of liquid rubber on the exposed contacts top

Hi Gordon, The sBitx and zBitx series use a directional coupler to measure SWR and Power: From the code, after reading the value from the ATTiny85 vfwd: sprintf(buff,"%d", (vfwd *

I don't know about Ashhar's specific circuitry, but many of these "power" measurement systems actually measure VOLTAGE and presume 50 ohms and calculate the power using Ohms Law etc. If your actual

Some questions on the new batch: 1.? Will these have a new version number to distinguish them from the original batch? 2.? Are there any HW changes to the boards or circuit components? 3.? Are

Ok glad to hear. I thought I had maybe let the magic smoke out. I will swap antenna and try on other bands. Do we now wait for the next update and fixes. 73 de 2E0IIY [email protected]> wrote:

Jens, The power output is determined by the input voltage and the drive setting. Are you using batteries? If there is a sag in the voltage when your radio goes into transmit, the output power will go

Are the FT8 contacts saved? ?If so, aren’t they written to the file system on micro SD card? if the FT8 contacts are written to the card then couldn’t the file system eventually become corrupted

Gerry, You power off the radio by unplugging the power. According to this post ( /g/BITX20/message/116864 ) from Farhan, there is no data being written to the SD card and the radio

At idle the backplate is getting somewhat hot. So my guess is that the linear regulator 7805 is getting hot. The radio draws about 450mA of the 9VDC supply so the 7805 will be dissipating some

Faran: It is a testimony to the veracity of the zBITX, when it is in danger of selling out in two to three days. ?Hopefully, your alumni will agree to come back and lend you a hand. I appreciate

Yes - this would be the best way to move forward. I would accept the additional cost for a fully switched off radio not drawing current after turning off. Best regards Peter DL4ZAQ

The station arrived yesterday. Everything works, nicely packaged, even the test report is included. 73 Matjaz S56ZVD Nigel Evans M0NDE via groups.io je 31. 03. 2025 ob 23:31?napisal:

Still a pain though. If the filesystem is corrupted badly enough you'd have to open up the radio, pull out the Micro SD card, and reflash it. If there were a way to do an orderly shutdown, including a

Maybe the standard distribution could simply poll/interrupt a GPIO line to trigger shutdown. Then a user could decide how to drive it. (I would use a three position switch, with the middle position

I must agree, If nothing gets written, chance is that the filesystem corruption is minimal.. And we do have good backups! Don't we? ? 73' Dick