I just loaded firmware 1.08 replacing 1.06.? Am I correct in that I will need to come up with some sort of interface to use the S-meter option?? If so, anyone have suggestions for how to build one for a simple old man like me?

73, Bill NZ0T

Soft for mBITX - only latest version(lost all setting).? Seek and tired to find something in Git Hub -too many words and now info. I need fiele and how to upload it and nothing more. Thanks in advance George UR4CRG/RX3ARG

Yes, these are compatible. I have 2 3.2's and a 3.5 from them and they all work as they should
kn4ud
--
Allen ?Merrell

all items sold

thanks

On Thu, Jul 12, 2018 at 10:09 AM, Jim Sheldon wrote:

I'd be more inclined to attempt finding the backlight conneciton on the back of the board and putting the resistor there instead - that way the on board processor doesn't see less voltage than it should. ?

That would be better!

My uBITX is finally finished. The Hammond case was a tight fit and the knobs came from my junkbox. The manipulator is home made and the microphone is housed in an old pill box.

It did not want to know about the straight key at first, so I upgraded to KD8CEC firmware. This knocked out both keys. After trying three different uBITX firmware packages and two different uBITX managers, I reverted to the default firmware. It could be that the uBITX manager and I did not agree with each other. Finally, it accepted both keys, although the straght key sounded a bit flakey until I cleaned the morse key points.

On Thu, Jul 12, 2018 at 09:39 AM, Jim Sheldon wrote:

The quick fix is simply to set the display to full brightness which actually turns off the PWM and the tone goes away.

See?

The old-fashioned way!? We don't need no stinkin' PWM!

Hello, my Name is Heinz,

I bought the BITX40 and connected the wires, Pots and DC, Speaker, Mic and what happened was a strange
sound in the Speaker as a buzz in the speaker and a seethe but no receiving.

What did I do to fix the problem:

I put a capacitor of 1000 ?F and an Ceramic capacitor with 100 nF to the voltage regulator on the raduino between 12 V and the Ground.
The result of it: no changes in the speaker and only seethe sound as it was before.
Today I put a second capacitir also with 1000 ?F between the raduino powerline 12 Volt and
now there is no longer the loud interferende as it was before.

But the receiver seems to be deaf and I receive no "normal" signals on 40 m
So at last I beg you pardon for my bad english and hope to fix the problem.

Here is a soundfile of the bitx40 BEFORE today, what you hear is the clicks by tuning, but this is not so bad,
what you also may here is the seethe sound before, who now was fixed as I wrote here.



The problem is still, that there is no signal wich comes from Shortwave, It seems only as
a very disturbed noise

Kind regards

Heinz

Heinz

After getting the 3.2" enhanced Nextion display working with my V3 uBITX, I noticed an annoying tone in the audio that went away when the Nextion was disconnected.? Tracking it down, it appeared to be getting out of the display board on the 5V power lines so I added more bypassing to the leads coming from Raduino power.? Didn't faze it.? Thinking it might be a ground loop, I added more grounding to the Raduino but that didn't help much either.

Speaking with a few people on it, the suggestion was made to power the display from an "off the Raduino board" supply but before I got a chance to build that up, Sheldon Gofberg on the uBITX Facebook group pointed me to the answer.

The tone is being generated on the Nextion board.? There is a "Display" brightness control in one of the menus that allows you to set your backlight brightness with a couple of sliders.? The way this brightness is controlled is by pulse width modulating the DC supply to the backlight LED.? It's this PWM oscillator that's causing the tone because it apparently isn't sufficiently decoupled on the board itself to keep the tone off of the DC supply line and it gets coupled back into the 5V supply on the Raduino and subsequently causes it to wind up in the uBITX audio chain and so on.

The quick fix is simply to set the display to full brightness which actually turns off the PWM and the tone goes away.

Next project is to try the external 5 volt supply independent of the the Raduino and see if that allows for brightness control again without the tone getting into everything.?

Jim Sheldon, W0EB

开云体育

Already sold

开云体育

Hi, Art,

Selling my unbuilt Ubitx version 4 - have a Ubitx version 3 and a bitx and don't need a 3rd one. The box was opened to inventory the parts only.
Also have 2 of the latest enclosures, Red and Blue, from AmateurRadioKits that are excess also. Accept PayPal and shipping in US only. Interested please send a private message to olson339 at comcast dot net.

Ubitx $105.00
Enclosures - $38.00 each

73
Art - N2AJO

On Mon, Jul 9, 2018 at 09:29 AM, Howard Fidel wrote:

I would be in favor of adding a frequency on 20 Meters

Then feel free to suggest one. 40 meters is the band of choice as this was started when the only game in town was the BitX-40. As I don't operate on 20, I have no idea of what might be a good frequency.
?
--
John - WA2FZW

BITX QSO Afternoon/Evening, Sunday, July 15, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Join us as we make contacts with our BitX-40s or uBitXs or anything else on 7.277 MHz in 40 meters!

This is a worldwide event for BitX40 (and other QRP)?stations starting at 3PM and 7pm in each time zone. To participate, call CQ BitX on Sunday, starting at?3PM and/or 7PM?your local time. The BitX QSO Night continues through the evening and conditions usually improve after sunset, so it is worthwhile to participate later in the evening.

Suggested Best Operating Practices:

Work at QRP power levels unless conditions require more power.
Call and listen for CQ BITX on the hour and every quarter hour.
It is helpful if you call CQ BITX with your callsign, name and location.?
Repeat your callsign a number of times during your CQ BITX and during QSO's.
Start a QSO by confirming the callsign, location, name and signal report of the other operator.
Say the callsign, name and location of the other operator so others can hear.
If the frequency is busy, avoid long conversations.
After your initial QSO is complete, ask if there are any other stations who would like to contact.

Report your QSO's, discuss propagation, noise, signal reports, audio reports, antenna type, etc. in this thread.

This is an undirected, scheduled event.? The BITX QSO Night relies on you to call CQ BITX to initiate contacts with other stations, so warm up that final and transmit a few calls on Sunday evening.? Talk to you then!
--
John - WA2FZW

I am a bit new to the Nextion display and there seems to be many choices out there.? Can anyone tell me if this display would be compatible with CEC firmware ?? If not could you provide a link?? At $30+/- I want to be sure what I am buying is OK.
Thanks,
73 Vince N1VIN

Hi Allard!
Thank you very much for your help!
I was ready to post the solution you found and the reason it happened, but you beat me to it.
I had the 10 nF cap installed for debouncing and RF bypassing without taking in consideration the fact that internal pull up is about 50 KOhms.
I will try to see what is the behaviour with the modified software and the cap installed and play a little with the delay time. It seems we might be able to shorten the delay to something like 20 msec.
Anyway I really like the elimination of the RF burst provided by the new firmware.
--
Ion

VA3NOI