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Re: Bluetooth Headset For Sbitx V3

 

If you are running the stock version as shipped by the manufacturer, then you would use this:
?

The command string must be copied and pasted in terminal verbatim.. cd $HOME && git clone https://github.com/drexjj/sBITX-toolbox.git && cd sBITX-toolbox && chmod +x *.sh && ./installer.sh


If you are running the 64 bit version then you would use this:
?

The command string must be copied and pasted in terminal verbatim.. cd $HOME && git clone https://github.com/drexjj/sBITX-toolbox64.git && cd sBITX-toolbox64 && chmod +x *.sh && ./installer.sh


-JJ
Re: Post Sales Support

 

I had a problem with mine and made contact with support.
They were a little slow to reply, but once They took interest in my problem I was promised a replacement component that I was able to diagnose and locate.

That replacement never came…..fortunately I had one on hand.
I’ve sent follow up messages but they have not replied.

My call to them and experience was more of a confirmation that the support is seemingly here in the group and not so much on the other end of the email at the manufacturer.

Maybe full device replacements are the priority, but my failure wasn’t taken resolved with help of the warranty.
Re: sBITX 64 bit field day and WSJT #sbitx_v2 #wsjtx

 

I figured out the low power. If I transmit at a low tone, say 200 Hz, the power is about half of what I see at higher tones.

Next - time. My JTDX reported DTs are all .5 to 1. I repeatedly tried syncing the time with the Toolbox app to the internet which reports success, then syncing HW to system again with success,? but I didn't see any change in DTs. FT8 apps on other systems on this home net are time accurate so I don't think it's the WiFi.
Any hints?
--
73
??? Bob? KD8CGH
Re: Bluetooth Headset For Sbitx V3

 

I went on the gethub link you provided me and connected the sbitx to my mobile hot spot to get that information downloaded. I opened the sbitx terminal and tried typing cd $home as the gethub said for directions did not work.?
Re: Need Help setting the PA Bias Current for sBITX

 

Aaron, like scotty said, you are doing great. I could probably put u up against a 1000 licensed hams and your new learned troubleshooting skils will probably out do 90% of them since most dont bother servicing their own equipment or experiment with their gear.

Your mis identification of parts is not too big a deal for me since i dont own the SBITX and im not a self proclaimed expert.HI HI.

This animal looks like it will help keeptrack of time and such, even? after the unit loses power because of a battery on the backside.

So , i would still look for anyshorted semiconductors in the transmit path. something seems to me was shutting ur SBITX off when you tried to key up . Meaning it was possibly dragging ur voltage down past the proper operating range. Diode, Transistor, fet, or maybe a chip tied to the +12 v or any of the other source voltages on the board ,like 5vdc, 3vdc.

If you have good receive, then get a notebook, and or print out the schematic large enough for you to follow easily. 1. you can go thru certain areas of the SBITX board and map out the voltages WHILE you are in receive mode. Then get some mini clips to attach to the board comonents and watch your voltmeter while you try to transmit. write all the voltages down for each section and or major part.
2. after you have this completed,LIke Scotty pointed out, you will have more insight into your SBITX than most have who never did this. You can then post your findings here to compare to others SBITX voltages and find the area thats causing the problem.

I would, since the unit was reversed voltaged, and you now have it up and running with receive,
?check some of the voltages on and this will take some of your time

D3,Q12,Q13,Q14,Q15, U3,,u1,u7.D2,Q5,Q3,Q9,Q10,Q11,
Q16,Q17,Q18,Q19,D6 i looked at the Schematic and these "look like they are tied to the transmit section.

These can be checked by measuring "idle voltage while in receive mode and make a chart. collector,emitter base, source drain gate, diodes measure voltage on anode versus the cathode end. also after voltage checks, unplug the unit and measure the resistance of the semiconductors with the ohmmeter section. Some prefer the diode setting ,some prefer the ohms setting .

Just make a chart for each component and it might tell you whats not operating properly. having these measurements will tell others who have the SBITX whether or not you have proper voltages to these semidonductors or chips. having base? to collector or base to emitter voltages will tell if a semiconductor is properly operating with proper biasing


The unfortunate thing about reverse polarity a unit, you sometimes have to do the shotgun troubleshooting method as i call it. whatever section is tied to the transmit, you shoot thru them to identify the possible bad items by voltage resistance testing. crossing each item off the list. Since your unit shut down trying to transmit, i would think you have a Semiconductor component internally shorted or failing under load.tied to the 12vdc rail.Maybe and this is a longshot, look for any deformed capacitors. I highly doubt there are any for the short period of time you stated it was reversed polaritied, but you never know. A shorted electrolytic cap would cause this too.

after you get ur unit fully running, you might invest in a cheap priced but good reputation ESR meter to check ur electrolytic caps. preferably one that can check the "Equivilent Series Resistance "of the capacitors IN CIRCUIT. Just to make sure none have drastically changed values due to the incident.

80% of any of my service solves were capacitors that looked good but went bad for one reason or another.they mostly opened up or just plain shorted out.

Even short application of too much reverse voltage can permanently damage the capacitor. Sometimes the self healing abilities can reverse this a bit over time, but there will be permanent damage.


just my hillbilly take of it all.HI HI.

73
David
ac9xh

On Wednesday, June 12, 2024 at 12:10:17 PM EDT, Scotty R <theroadcalls1@...> wrote:


Aaron, you are doing great! As a former RadioShack tech, I can tell you that getting stable power in the item is always first. Although inconvenient,? this radio troubleshooting will make you an expert on the design and components.? As a teen in late 70s,? I had almost memorized the schematics of the Heathkit hw101 transceiver.? So many modifications and repairs led to that. This radio is completely different,? but keep up the good work and efforts. Document everything and be proud of your achievements.

Scotty WD4PYT


On Wed, Jun 12, 2024, 11:13 AM Aaron K5ATG via <Aaron=[email protected]> wrote:
CORRECTION:
This doesn't use a SI5351. What I was calling a SI5351 is actually a

If anyone notices that I'm making a mistake like this or something then please correct me. I don't have a PHD in electronics and I have not been a ham who has been building this stuff for decades. Don't assume that I know it cause I don't. My goal here is to be able to get back on the air with this so I can start off learning easier to understand electronics and get more complicated as I go. Trying to figure this out, I mean yeah I'm learning some but still it feels like I have jumped in the deep end of the pool with cement shoes on.?
I really appreciate all of the help that people has given me. I really don't know if I'm making more mistakes and making it worse as I go.?
Now i have learned how to measure current (I even made a cable to do this) and how to replace parts, getting lots of experience in replacing parts. I try to look at the schematic and use that to find my way on the PCB but it is still way over my head.??
--
'72
Aaron?
Re: Bluetooth Headset For Sbitx V3

 

Hi

You will want to use an app that I created called USB Headset Controller. It is part of the sBITX Toolbox suite of apps and also on the 64 bit SD card image.

?





-JJ

Re: How hot is too hot?

 

The CPU monitoring tool is specific to the Raspberry Pi and is used to monitor the temperature of the GPU and CPU. The technology is built in.

It? measures the temperature in Celsius. If the temperature reaches 80°C or more, this will cause the CPU to throttle and reduce performance.

Reference: ?


-JJ
Re: Telex headset

 

On Tue, Jun 11, 2024 at 10:40 PM, Gerald Sherman wrote:
Telex "Contester" headset, model #62400-155
I asked Chat GPT this - Can you give me any technical specifications on this: ?Telex "Contester" headset, model #62400-155. ?Thanks

And this is the reply -?

The Telex "Contester" headset, model #62400-155, is designed primarily for amateur radio use, particularly by contesters. Here are the key technical specifications and features of the headset:

  • Type: Over-the-ear headset
  • Headset Plug: 1/4" plug for headset sound
  • Microphone Connector: 8-pin microphone connector
  • Compatibility: Compatible with many radios, commonly used with Kenwood models like TS-690S and TS-430S
  • Design Purpose: Optimized for clear communication during radio contests

Unfortunately, some specific details such as the frequency response, impedance, and sensitivity are not readily available from the sources? ()?? ()?. However, it is known to be a robust and functional headset tailored for the needs of amateur radio operators.

For more detailed information, you can visit the or check out additional listings on .

?
Hope this helps a bit.? Good luck!
Re: How hot is too hot?

 

I think I will do something a little more scientific than reading Google, I'm going to tape a thermal sensor on the top of the CPU and compare temps in real time with my Fluke MM, then I will know for sure.

Joel
N6ALT
Re: Need Help setting the PA Bias Current for sBITX

 

Aaron, you are doing great! As a former RadioShack tech, I can tell you that getting stable power in the item is always first. Although inconvenient,? this radio troubleshooting will make you an expert on the design and components.? As a teen in late 70s,? I had almost memorized the schematics of the Heathkit hw101 transceiver.? So many modifications and repairs led to that. This radio is completely different,? but keep up the good work and efforts. Document everything and be proud of your achievements.

Scotty WD4PYT


On Wed, Jun 12, 2024, 11:13 AM Aaron K5ATG via <Aaron=[email protected]> wrote:
CORRECTION:
This doesn't use a SI5351. What I was calling a SI5351 is actually a

If anyone notices that I'm making a mistake like this or something then please correct me. I don't have a PHD in electronics and I have not been a ham who has been building this stuff for decades. Don't assume that I know it cause I don't. My goal here is to be able to get back on the air with this so I can start off learning easier to understand electronics and get more complicated as I go. Trying to figure this out, I mean yeah I'm learning some but still it feels like I have jumped in the deep end of the pool with cement shoes on.?
I really appreciate all of the help that people has given me. I really don't know if I'm making more mistakes and making it worse as I go.?
Now i have learned how to measure current (I even made a cable to do this) and how to replace parts, getting lots of experience in replacing parts. I try to look at the schematic and use that to find my way on the PCB but it is still way over my head.??
--
'72
Aaron?
Re: Need Help setting the PA Bias Current for sBITX

 

CORRECTION:
This doesn't use a SI5351. What I was calling a SI5351 is actually a

If anyone notices that I'm making a mistake like this or something then please correct me. I don't have a PHD in electronics and I have not been a ham who has been building this stuff for decades. Don't assume that I know it cause I don't. My goal here is to be able to get back on the air with this so I can start off learning easier to understand electronics and get more complicated as I go. Trying to figure this out, I mean yeah I'm learning some but still it feels like I have jumped in the deep end of the pool with cement shoes on.?
I really appreciate all of the help that people has given me. I really don't know if I'm making more mistakes and making it worse as I go.?
Now i have learned how to measure current (I even made a cable to do this) and how to replace parts, getting lots of experience in replacing parts. I try to look at the schematic and use that to find my way on the PCB but it is still way over my head.??
--
'72
Aaron?
Re: New sBitx V3 3D printed wedge feet

 

On Wed, Apr 3, 2024 at 03:25 PM, Jared - KJ5DTK wrote:

Someone posted an image that had some similar feet but I could never find them published on any of the normal sites.? So I created something similar.?

These set the screen back at 30 degrees and are quite stable.? They also nest nicely for packing.??



Jared

Hi Jared,?

I really like your design. I remixed them with 16mm longer rear supports to increase stability. I added the remix to your original post.
Re: How hot is too hot?

 

I think your train of thought is missing a few things. The CPU is a circuit board corresponding to many transistors, the measurement is performed on this board. When you switch on the power supply, the temperature at the point of measurement rises very quickly. It is worth reading about it with the help of google. You can find a lot of useful and uninteresting information.
--
Gyula HA3HZ
Re: How hot is too hot?

 

JJ,

I don't think the CPU Temp gauge is accurate. This morning with my shop and my sBitx V3 at 64F, I booted my sBitx up to find the starting temp to show 30C or 86F indicated. If accurate it should have shown around 18C. Yesterday at end of day right before I shut the sBitx down for the night, the temp was indicated to be 76C or 169F, I find that to be a bit too hot being as I was only running the sBitx program all day. Am I looking at this right or am I missing something?

Joel
N6ALT
Bluetooth Headset For Sbitx V3

 

Hello I recently bought a new sbitx v3 and when I was at the Dayton Oh/Xenia Ham Convention the sbitx team was there. I had spoke to one of the team members about using a bluetooth headset for transmit and receive instead of using the hand microphone and was told to join this group to ask for script to put on the radio so I can start using my Bluetooth headset.?
Thanks Clayton K9QCA?
Re: sBITX 64 bit field day and WSJT #sbitx_v2 #wsjtx

 

Thanks Gyula?
? I got JTDX working and on the sBITX and successfully used the sBITX Toolbox larger virtual screen.
One anomaly I noticed is that output power is about half what I get in CW with the same drive setting. I suspect that the audio level is too low, even with the JTDX power slider all the way up. I didn't see a way to adjust the level.
--
73
??? Bob? KD8CGH
Telex headset

 

I have a Telex "Contester" headset, model #62400-155.? This headset has a boom microphone on it.? I went to the Telex web site to find some data on it, specifically the microphone characteristics.? The web site only says that this model is obsolete, and gives no data.? Does anybody know anything about this model?? I've had it on, and the earpieces totally shut out any room noise.? It seems to be a very good unit.

Gerry Sherman

Sent by the Windows 11 Thunderbird
Re: Need Help setting the PA Bias Current for sBITX

 


Aaron,

Sounds like ur making headway. reverse polorizing a unit sometimes takes patience to work out all the weakened components or some that wont fail unless its under load.

I dont own the SBITX yet, but it seems from the info you provided its now isolated to the transmit sections.

I would start by looking at the si5351 area and where the Pi connect since you actually witnessed some smoke. where there is smoke, there is char, or holes in something or burnt traces. check driver transistors, and anything feeding the finals. Also check your interconnecting wires for any burn marks or punch thru holes .Since you are actually receiving stuff, i would say your si5351 and PI are good, unless the si5351 had one osc crap out .It has 3 outputs.

order a si5351board asembly which are cheap, and replace the one in your Sbitx. . Also look for any interconnecting components leading to these items on the board such as traces burnt, resistors discolored, etc. You are doing great. you got the receive up and running!!!!!! . recheck ur fets and also any driver transistors and pre amp transistors.Also check ur biasing resistors for opens.

Good luck on ur repair Aaron. You have made alot of headway since u are receiving stuff and power is flowing back into the unit.

might check your voltages on your finals , and anything up stream from the finals. Sounds like ur getting very very close.

GOOD JOB!!!!!!


73
David
ac9xh


On Tuesday, June 11, 2024 at 10:42:15 PM EDT, Aaron K5ATG <aaron@...> wrote:


Hello All,
Yup still trying to get my sBITX working again. Here is a recap.?
Back in March I accidently cross polarized the transceiver
First thing I did was to replace both IRF510's? Q16 & Q17
That didn't work so I found that D7 Needed to be replaced. I replaced it with another 1N4007 Diode ( I think that this is intended to protect the circuit in case of cross polarization. It didn't work that in my case.?
I then replaced the voltage regulator with the suggested Drok Voltage Regulator
I then would turn it on and would get wisps of smoke and the smell of burning electronics. I could not locate the source of the smoke but it was coming from the area around the SI5351 and RPI. A couple of days later I pulled the SI5351 out to look at it and returned it and powered up the transceiver and there was no smoke or smell of electronics burning.?
I hooked it up to an antenna and it was receiving very good,
'Next I hooked up a dummy load to it and put it in transmit and it would completely shut off immediately
Next I was told that I need to set the PA Bias since I replaced the IRF510's? in order to do that I had to follow these steps:
  1. Set mode to USB
  2. Set MIC to 1
  3. Set Drive to 1
  4. Set PA-BIAS1 to Zero (Fully Counter Clockwise
  5. Note DC current on PTT
  6. Slowly increase the bias current until the total current consumed by the radio is increased by approximately 250 mA

No idea on how to measure the current with a digital multimeter so I had to do some cinematic research on how to do it. I basically had to put the DMM probe in the right socket on the DMM and put the DMM in the circuit. Here is a pic of what I did (i apologize for the crudeness of the image, I just rushed through it)?


When the sBITX is in Receive the DMM displays a 0.43, when it goes into transmit it jumps to 0.86. Before I hooked up the DMM to start adjusting the? ? ? ? ? ?PA-BIAS1 I set it to zero (full counter clockwise.)
When I adjust PA-BIAS1 there is no change to the DMM readings in either receive or transmits.?
This is where I'm at now and I'm unsure what tunnel in this never ending maze of tunnels to take in eventually getting this radio back on the air. I'm starting to wonder if it ever worked in the first place and my recollection of me enjoy using it is just an illusion within the confines of my cerebral carnival.??
--
'72
Aaron?
Need Help setting the PA Bias Current for sBITX

 

Hello All,
Yup still trying to get my sBITX working again. Here is a recap.?
Back in March I accidently cross polarized the transceiver
First thing I did was to replace both IRF510's? Q16 & Q17
That didn't work so I found that D7 Needed to be replaced. I replaced it with another 1N4007 Diode ( I think that this is intended to protect the circuit in case of cross polarization. It didn't work that in my case.?
I then replaced the voltage regulator with the suggested Drok Voltage Regulator
I then would turn it on and would get wisps of smoke and the smell of burning electronics. I could not locate the source of the smoke but it was coming from the area around the SI5351 and RPI. A couple of days later I pulled the SI5351 out to look at it and returned it and powered up the transceiver and there was no smoke or smell of electronics burning.?
I hooked it up to an antenna and it was receiving very good,
'Next I hooked up a dummy load to it and put it in transmit and it would completely shut off immediately
Next I was told that I need to set the PA Bias since I replaced the IRF510's? in order to do that I had to follow these steps:
  1. Set mode to USB
  2. Set MIC to 1
  3. Set Drive to 1
  4. Set PA-BIAS1 to Zero (Fully Counter Clockwise
  5. Note DC current on PTT
  6. Slowly increase the bias current until the total current consumed by the radio is increased by approximately 250 mA

No idea on how to measure the current with a digital multimeter so I had to do some cinematic research on how to do it. I basically had to put the DMM probe in the right socket on the DMM and put the DMM in the circuit. Here is a pic of what I did (i apologize for the crudeness of the image, I just rushed through it)?


When the sBITX is in Receive the DMM displays a 0.43, when it goes into transmit it jumps to 0.86. Before I hooked up the DMM to start adjusting the? ? ? ? ? ?PA-BIAS1 I set it to zero (full counter clockwise.)
When I adjust PA-BIAS1 there is no change to the DMM readings in either receive or transmits.?
This is where I'm at now and I'm unsure what tunnel in this never ending maze of tunnels to take in eventually getting this radio back on the air. I'm starting to wonder if it ever worked in the first place and my recollection of me enjoy using it is just an illusion within the confines of my cerebral carnival.??
--
'72
Aaron?
Email

[email protected]
 

Hello. Thanks
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