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Re: Received my Sbitx #sBitx

 

Thanks Bill, much better now. :-) this radio is quite amazing.. plus I can tinker. That's what radio is all about for me, probably never hear me on the air. :-)
Working Daylight receiver

 

After many hours of tinkering I finally have a working receiver that has surprisingly, passed my expectations.
The Rx needs the transmitter.
Barry?
K3bo

IMG_20220912_052930.jpg

Re: CW keyer without transmitting (turning off break in) #sBitx

Anthony Good
 

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A quick solution might be to change in the code the TX Power control lower limit to 0. ?I¡¯ll try that this evening and post code if it works.

On Sep 12, 2022, at 15:35, Mark Earnest via <mark@...> wrote:

Bit of a weird question, but I cannot find a way to do this in the docs. Is there a way to use the CW keyer without actually transmitting? Say, to adjust the tone and speed settings off the air. It would be a bonus if there were a way to do this and have the morse code translator processing the CW being entered (full disclosure: I'm in the middle of learning CW and curious if I can use the sBitx as a learning tool as well :)

I've seen other rigs support something like this by turning off break-in altogether.

Also, not getting into how I know this or how long it took to figure out, but if you ever find your colors completely inverted on your Raspberry Pi 7" screen, check to see if a solder flake ended up loose in your case and is shorting between R14/R13 and R9/R10 on your LCD controller board :)

--
KB3LYB
sBitx #077
CW keyer without transmitting (turning off break in) #sBitx

Mark Earnest
 

Bit of a weird question, but I cannot find a way to do this in the docs. Is there a way to use the CW keyer without actually transmitting? Say, to adjust the tone and speed settings off the air. It would be a bonus if there were a way to do this and have the morse code translator processing the CW being entered (full disclosure: I'm in the middle of learning CW and curious if I can use the sBitx as a learning tool as well :)

I've seen other rigs support something like this by turning off break-in altogether.

Also, not getting into how I know this or how long it took to figure out, but if you ever find your colors completely inverted on your Raspberry Pi 7" screen, check to see if a solder flake ended up loose in your case and is shorting between R14/R13 and R9/R10 on your LCD controller board :)

--
KB3LYB
sBitx #077
Re: Received my Sbitx #sBitx

bill steffey NY9H
 

¿ªÔÆÌåÓý

it is from the raspi wifi ....?? shut it off for now...?? used rj45?? for internet

On 9/12/2022 3:14 PM, n8yg via groups.io wrote:

Also noted the burrrp is not audio gain dependent.?

Re: Received my Sbitx #sBitx

 

Also noted the burrrp is not audio gain dependent.?
Received my Sbitx #sBitx

 

Hi All received my Sbitx today.?

Noted: Receive current. is about 0.66A with 12.5V input. Probably because of the added switcher as opposed to the LDO.?

Also I have a burrrrp about every 6.3 Seconds.. Not hooked up to the internet.? I stumbled into someone that had it but only when hooked to the internet.?
I haven't even got that far yet. just enjoying the discovery.. but having too many irons in the fire today.. :-)

73
Brad N8YG
Re: sBitx.net - HOWTO Upgrade to switching regulator

 

Done


On Mon, Sep 12, 2022 at 9:42 PM Anthony Good <anthony.good@...> wrote:
Good deal.? Two updates I¡¯d recommend:

In?Corrupted sBitx ¨C How to reset the settings.ini:

Insert a carriage return bettor sbitx.git and cd:



In?Upgrading to switching regulator (Development Edition)"

"12. Solder the black (ground) wire of the new switching regulator to the negative side of the orange electrolytic capacitor.? This capacitor is soldered on top of R80, a SMD resistor.¡±

Change to:

12. Remove the main board screw at H1 and solder the black (ground) wire of the new switching regulator to the ground trace at H1, and replace the screw.

On Sep 12, 2022, at 11:45, Ashhar Farhan <farhanbox@...> wrote:

Often, much of our knowledge of sbitx is getting scattered into?various posts. I have started where over days and weeks, we will cull information from?the posts, etc. and put them in one place.
The first post is the information provided by Anil and Anthony about upgrading to the switching regulator.
View it on the .
- f
Re: Need current Nextion tft #nextion #v6

 

¿ªÔÆÌåÓý

Hi Mark,Evan,?

yes , great, just looks like the job, also had a quick look at github and as you say, there also. Will be able to use some (I hope). grateful thanks yr help. No doubt i'll be back

Art g3xne

From: [email protected] <[email protected]> on behalf of Mark Hatch <mark2382@...>
Sent: 12 September 2022 13:21
To: [email protected] <[email protected]>
Subject: Re: [BITX20] Need current Nextion tft #nextion #v6
?

Believe these are the same as the one that Evan shared but they are also here.?




unfortunately no user contributed 2.8 screens. So have to use the original ones provided by KD8CEC. ? Look for the ones with the ¡°E¡± in their name and ending with the tft fuel extension.?


73
Mark
AJ6CU
Re: sBitx.net - HOWTO Upgrade to switching regulator

Anthony Good
 

¿ªÔÆÌåÓý

Good deal. ?Two updates I¡¯d recommend:

In?Corrupted sBitx ¨C How to reset the settings.ini:

Insert a carriage return bettor sbitx.git and cd:



In?Upgrading to switching regulator (Development Edition)"

"12. Solder the black (ground) wire of the new switching regulator to the negative side of the orange electrolytic capacitor. ?This capacitor is soldered on top of R80, a SMD resistor.¡±

Change to:

12. Remove the main board screw at H1 and solder the black (ground) wire of the new switching regulator to the ground trace at H1, and replace the screw.

On Sep 12, 2022, at 11:45, Ashhar Farhan <farhanbox@...> wrote:

Often, much of our knowledge of sbitx is getting scattered into?various posts. I have started where over days and weeks, we will cull information from?the posts, etc. and put them in one place.
The first post is the information provided by Anil and Anthony about upgrading to the switching regulator.
View it on the .
- f
Re: sBitx.net - HOWTO Upgrade to switching regulator

bill steffey NY9H
 

¿ªÔÆÌåÓý

GREAT IDEA ..

got my ser# 146 in western PA..

Took a minute to get past the WiFi Noise...

still learning ...

bill? ny9h/3


On 9/12/2022 11:45 AM, Ashhar Farhan wrote:

Often, much of our knowledge of sbitx is getting scattered into?various posts. I have started where over days and weeks, we will cull information from?the posts, etc. and put them in one place.
The first post is the information provided by Anil and Anthony about upgrading to the switching regulator.
View it on the .
- f
sBitx.net - HOWTO Upgrade to switching regulator

 

Often, much of our knowledge of sbitx is getting scattered into?various posts. I have started where over days and weeks, we will cull information from?the posts, etc. and put them in one place.
The first post is the information provided by Anil and Anthony about upgrading to the switching regulator.
View it on the .
- f
Re: Audio Amp Wi-Fi Interference #sBitx

 

I have tried installing RF bypass caps on the LM380 inputs and output, but this did not eliminate the noise. .??
The easiest fix is to disable WiFi on the Raspberry Pi?
?sudo ifconfig wlan0 down

If you need WiFI, add an external USB WiFi adapter at the end of a USB extension cable.
??
?
?
Re: Please provide sBitx hardware information #sBitx

 

Hi Rolf, I am looking for a new place to live.
Thank you for the information.
I don't know of any stations in Japan that use sBitx, so I was troubled by the lack of information.
Best regards.
Re: PTO without 3D printer

 

OOOPS; I forgot..
blu capacitor are for teast, wayting polystirene capacitors, 6mm diameter brass bar, etc...
Re: PTO without 3D printer

 

Hi Farhan,
what a pleasure !
In attachement a pic of my PCBs.
My PTO has a coil 30mm long , 9mm diameter, 10+30 turns? for 1.997 KHz without brass inside, turns are 24mm long.

What the dimension of your 3d coil?
With some more works bigger PCB? can be built 20% smaller. I used Easyeda, Flatcam, Cncusb and K2cnc milling machine, yes it is PCB milling.
Can you please answer also my other questions? Thank you
Paolo? from Italy
Re: #sBitx Sbitx died mid transmission #sBitx

 

Thank you for the explanation.? Have you had any issues with this regulator using the full 40 watt output?
Re: Need current Nextion tft #nextion #v6

 

Believe these are the same as the one that Evan shared but they are also here.?




unfortunately no user contributed 2.8 screens. So have to use the original ones provided by KD8CEC. ? Look for the ones with the ¡°E¡± in their name and ending with the tft fuel extension.?


73
Mark
AJ6CU
Re: sBitx Update Kit Received! #sBitx

 

Actually, maybe that capacitor is an added part that was found necessary for stability of the LM338 (bypassing that leg of the voltage divider) and isn't on the schematic; there is also a largish standing electrolytic nearby. In any event, bypassing the R80 position is pointless after it's shorted!. It's possible that it would be more useful as another output bypass rather than an input bypass, or it may not be needed at all.


On Mon, Sep 12, 2022 at 7:44 AM Anthony Good <anthony.good@...> wrote:
OK.? It was unclear from the lengths of the leads on the regulator where exactly to go.? That point was the closest ground I could find, and have the white and red leads still reach the LM338 location pins.? I saw from another post what the factory is doing.

On Sep 11, 2022, at 21:02, Ashhar Farhan <farhanbox@...> wrote:

Goody,
It might be better to solder the ground to the nearby mounting hole's tinned collar.?
The switching regulator needs a low impedance ground.
- f

On Mon, Sep 12, 2022, 12:37 AM Anthony Good <anthony.good@...> wrote:
I figured it out.? Here¡¯s what I did, translated into directions.? These are preliminary, your results may vary.

1.? Take off the top panel and disconnect the speaker.? Lay this aside.
2.? Disconnect the white ribbon cable going from the Pi to the touch screen display.? There are little black tabs on each side of the connector on the display unit that need to pop straight out in the direction of the ribbon cable to release the ribbon cable.
3.? Disconnect the brown and black wire (touch display power) from the digital board.
4.? Remove the gray ribbon cable out of the digital board by pulling the gray ribbon straight backwards.
5.? Loosen the two nuts on the right side holding the metal bracket that the Pi and the digital board is mount to.? Do not take the nuts entirely off.
6.? Pull the Pi and digital board assembly straight up to remove and set aside.
7.? Remove the four screws holding the main board to the chassis
8.? Disconnect the two red wires from the power switch on the back panel
9.? Remove screws on the four back corners of the outside of the chassis to remove the back panel along with the main board.
10.? Put the rest of the chassis with the screen and controls aside.? Carefully place the back panel and main board on your workbench and loosen the three screws holding the bar that presses the two final transistors and the LM338 regulator on to the back panel heatsink.? Remove the bar and three screws.? The main board should be loose from the back panel now.
11.? Unsolder the LM338.? With the front of the main board facing you, it¡¯s the first three pin device from the left on the back on the back that was against the heatsink.
12. Solder the black (ground) wire of the new switching regulator to the negative side of the orange electrolytic capacitor.? This capacitor is soldered on top of R80, a SMD resistor.
13. Solder the red switching regulator wire (+13.8 volt input) to the right-most pin where the LM338 used to be.? This is the input pin shown in the diagram below.
14. Solder the white switch regulator wire (output) to the middle pin, where the LM338 used to be.? This is the output pin shown below. ?(The first pin of the LM338, labeled ¡°Adjust" below, will remain open.
15.? Place the main board against the back panel.? Place the bar that presses the final transistors to the heatsink place.? Place the three screws back in, but do not tighten all the way.? Leave them rather loose.
16.? Place the main board and back panel together back into the main chassis.? Line up the three front jacks (mic, earphone, cw key) to the holes in the front panel.? Carefully push the back panel into place until it mates correctly with the side and bottom panels.
17.? Line up the main board with the four screw holes.? Place the four screws in, starting them, but leaving them slightly loose.? After all four are started, tighten all four.
18.? Tighten the three screws that are in the bar that presses the two final transistors on to the back panel heatsink.? Use your best judgement. ?(I tightened until the two final transistors would not move with me pressing my finger nail on the side of them.)
19. (Optional step) ?Connect the power.? Turn on the unit and use a voltmeter to verify that the white lead from the new switching regulator has about 5.4 volts on it.? If it is not close to 5.4 volts, stop and troubleshoot.? If it¡¯s good, turn off the unit, disconnector the power, and proceed.
20.? Re-assemble the remaining parts of the unit.? Slide the pi and digital board subassembly back in, being sure to have the pins on the bottom meting correctly with the connector on the main board.? Be sure to connect the gray ribbon cable to the back of the digital board (it is keyed so it can be inserted only one way), the white ribbon cable to the display unit (blue side down, silver side out), and black & brown power cable for the display going to the digital board (brown is down, black is up).? The assembly manual has pictures that can help ().
21.? Reinstall the top panel, connecting the speaker to the digital board prior to putting the top panel on.
22.? Connect the power, and power up!




73
Goody
K3NG


On Sep 11, 2022, at 10:09, Anthony Good <anthony.good@...> wrote:

Are there instructions for installing the new regulator board

On Sep 10, 2022, at 11:32, Anthony Good <anthony.good@...> wrote:

Received my kit here in W3 land.? Yeahhhhh

73
Goody
K3NG




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Re: #sbitx #sbitx-k3ng #sBitx #sbitx-k3ng #sBitx

Anthony Good
 

¿ªÔÆÌåÓý

Come on in. ?The water is great, once you get used to it :-D



On Sep 12, 2022, at 08:21, Scott KE8KYP <scott_massey@...> wrote:

Hi Goody (and Ashhar),

No need to apologize. ?I asked. ?Thank you very much for the guide/details.

Ok¡­ time to jump.

Geronimo!

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