Jerry, Sarma, Gordon,
Wow, am I confused.? I purchased 12 August 2019 and I thought it was
a V5 however after Jerry's response I looked and it is a V4.? My bad
for not checking things better.? Live and learn.
I am using a stereo cable I bought on ebay cheap.? After
your responses I decided to check the 3.5mm connectors to see if
there could be a short there.? Well, there are only 2 wires in the
cable and shield and ring are connected together.? Lesson, don't buy
cheap cables on ebay.? I will order some quality stereo cables from
Amazon and see how things go.
Thank you so much for your responses.
Vince
On 12/16/2019 12:46 PM, Gordon Gibby
wrote:
toggle quoted message
Show quoted text
Are you DC shorting out the output with a transformer in the sound
card??
On Dec 16, 2019, at 12:07, Jerry Gaffke via Groups.Io < jgaffke@...>
wrote:
I'd guess your USB soundcard cabling is somehow (almost)
shorting out the audio from that 2822 chip.
Look for a short.
Perhaps add an 8 or 10 ohm resistor in series with the
TDA2822 to protect it from shorts like that.
The TDA2822 amp was used on v3.
Some discrete transistors were used on v4.
On v5, as Sarma has stated, the trusty (crusty?) old LM386
was used.
If you have a TDA2822 chip installed, it is probably v3.
A search of the forum for 2822 will reveal that a few v3
uBitx boards went out
with a WX branded TDA2822.? This clone of the TDA2822 works
fine up to about 8v,
above 8v it can sometimes self destruct.? ?If you have a WX
branded TDA2822 on
your board, I suggest you get an NJM2073D ordered from a
reputable distributor
It is pin compatible with the TDA2822, works fine, good to
15v or so.
The original TDA2822 in the DIP package from ST is no
longer available,
though ST does still sell it in an SOIC.
There are a half dozen different makers of clone TDA2822's,
many of them work fine.
Some of the clones work ok but only with a maximum supply
voltage of around 6v.
With the WX TDA2822 clone operating at 12v in the uBitx, the
chip might work fine
for weeks and then suddenly decide to blow bits of silicon
across the room.
A fun bit of trivia from?
? "The
LM386 was invented by Ernie Leroy Long at Motorola in
1969. It was originally for part of a fuel injection
system for a Ford Car."
If true, I assume it went by a different name at the time.
I'm a bit suspicious, a google for "LM386 Ernie" gets many
copies of exactly the above phrase with no further
information or attribution.
The "LM" prefix suggests National Semiconductor, perhaps it
had a different name coming out of Motorola.
Jerry, KE7ER
?
On Mon, Dec 16, 2019 at 07:10 AM, V Zecchinelli wrote:
Good Morning,
I have a quick question on FT8 with uBitx V5 using USB
soundcard (7.1 Channel).? Even with the volume of uBitx set
very low the 2822 audio amp gets very hot and if volume set
over 1/4 it will fail catastrophically.? On phone I can
listen to the radio all day with no issues.? Seems odd.?
Anyone else seen this problem?
Thanks,
Vince
|
Re: Brand new uBiTX v5.0 quality issue ?
Hi Skip, thank you so much for your precious advice!
Diego, I8TIF
|
Are you DC shorting out the output with a transformer in the sound card??
toggle quoted message
Show quoted text
On Dec 16, 2019, at 12:07, Jerry Gaffke via Groups.Io < jgaffke@...> wrote: I'd guess your USB soundcard cabling is somehow (almost) shorting out the audio from that 2822 chip.
Look for a short.
Perhaps add an 8 or 10 ohm resistor in series with the TDA2822 to protect it from shorts like that.
The TDA2822 amp was used on v3.
Some discrete transistors were used on v4.
On v5, as Sarma has stated, the trusty (crusty?) old LM386 was used.
If you have a TDA2822 chip installed, it is probably v3.
A search of the forum for 2822 will reveal that a few v3 uBitx boards went out
with a WX branded TDA2822.? This clone of the TDA2822 works fine up to about 8v,
above 8v it can sometimes self destruct.? ?If you have a WX branded TDA2822 on
your board, I suggest you get an NJM2073D ordered from a reputable distributor
It is pin compatible with the TDA2822, works fine, good to 15v or so.
The original TDA2822 in the DIP package from ST is no longer available,
though ST does still sell it in an SOIC.
There are a half dozen different makers of clone TDA2822's, many of them work fine.
Some of the clones work ok but only with a maximum supply voltage of around 6v.
With the WX TDA2822 clone operating at 12v in the uBitx, the chip might work fine
for weeks and then suddenly decide to blow bits of silicon across the room.
A fun bit of trivia from?
? "The LM386 was invented by Ernie Leroy Long at Motorola in 1969. It was originally for part of a fuel injection system for a Ford Car."
If true, I assume it went by a different name at the time.
I'm a bit suspicious, a google for "LM386 Ernie" gets many copies of exactly the above phrase with no further information or attribution.
The "LM" prefix suggests National Semiconductor, perhaps it had a different name coming out of Motorola.
Jerry, KE7ER
?
On Mon, Dec 16, 2019 at 07:10 AM, V Zecchinelli wrote:
Good Morning,
I have a quick question on FT8 with uBitx V5 using USB soundcard (7.1 Channel).? Even with the volume of uBitx set very low the 2822 audio amp gets very hot and if volume set over 1/4 it will fail catastrophically.? On phone I can listen to the radio all day with no issues.? Seems odd.? Anyone else seen this problem?
Thanks,
Vince
|
Re: STM32F769-FT8-Transceiver
Charles Begun the build process. I have downloaded all the info from github. Would you mind sharing some pics of back of your build. The video shows the front but I need a visual of the back side also 73 Art N2ajo From: [email protected] < [email protected]> On Behalf Of Charles Hill Sent: Monday, December 9, 2019 8:32 AM To: [email protected]Subject: [BITX20] STM32F769-FT8-Transceiver Well I finally gotten the <> STM32F769-FT8-Transceiver project to a state worth releasing. I have placed the files required for making the project on Github at this location: <> I hope you enjoy the project. Regards, Charley
|
Thanks Jerry. If the OP? used mono 3.5 male pin in to the 35 stereo sockt, i am sure the short citcuit created between sleeve and one channel.of audio ( on ring) will kill the audio amplifier.? Instead? he should use a stereo pin wand use one channel. Infact tip and ring of the socket are looped.? I expect the OP? to comeout of the scensrio unserwhich this failure is happenong on v5 board!!!!
Sarma vu3zmv
On Mon, 16 Dec 2019, 10:37 pm Jerry Gaffke via Groups.Io, <jgaffke= [email protected]> wrote: I'd guess your USB soundcard cabling is somehow (almost) shorting out the audio from that 2822 chip.
Look for a short.
Perhaps add an 8 or 10 ohm resistor in series with the TDA2822 to protect it from shorts like that.
The TDA2822 amp was used on v3.
Some discrete transistors were used on v4.
On v5, as Sarma has stated, the trusty (crusty?) old LM386 was used.
If you have a TDA2822 chip installed, it is probably v3.
A search of the forum for 2822 will reveal that a few v3 uBitx boards went out
with a WX branded TDA2822.? This clone of the TDA2822 works fine up to about 8v,
above 8v it can sometimes self destruct.? ?If you have a WX branded TDA2822 on
your board, I suggest you get an NJM2073D ordered from a reputable distributor
It is pin compatible with the TDA2822, works fine, good to 15v or so.
The original TDA2822 in the DIP package from ST is no longer available,
though ST does still sell it in an SOIC.
There are a half dozen different makers of clone TDA2822's, many of them work fine.
Some of the clones work ok but only with a maximum supply voltage of around 6v.
With the WX TDA2822 clone operating at 12v in the uBitx, the chip might work fine
for weeks and then suddenly decide to blow bits of silicon across the room.
A fun bit of trivia from?
? "The LM386 was invented by Ernie Leroy Long at Motorola in 1969. It was originally for part of a fuel injection system for a Ford Car."
If true, I assume it went by a different name at the time.
I'm a bit suspicious, a google for "LM386 Ernie" gets many copies of exactly the above phrase with no further information or attribution.
The "LM" prefix suggests National Semiconductor, perhaps it had a different name coming out of Motorola.
Jerry, KE7ER
?
On Mon, Dec 16, 2019 at 07:10 AM, V Zecchinelli wrote:
Good Morning,
I have a quick question on FT8 with uBitx V5 using USB soundcard (7.1 Channel).? Even with the volume of uBitx set very low the 2822 audio amp gets very hot and if volume set over 1/4 it will fail catastrophically.? On phone I can listen to the radio all day with no issues.? Seems odd.? Anyone else seen this problem?
Thanks,
Vince
|
I'd guess your USB soundcard cabling is somehow (almost) shorting out the audio from that 2822 chip.
Look for a short.
Perhaps add an 8 or 10 ohm resistor in series with the TDA2822 to protect it from shorts like that.
The TDA2822 amp was used on v3.
Some discrete transistors were used on v4.
On v5, as Sarma has stated, the trusty (crusty?) old LM386 was used.
If you have a TDA2822 chip installed, it is probably v3.
A search of the forum for 2822 will reveal that a few v3 uBitx boards went out
with a WX branded TDA2822.? This clone of the TDA2822 works fine up to about 8v,
above 8v it can sometimes self destruct.? ?If you have a WX branded TDA2822 on
your board, I suggest you get an NJM2073D ordered from a reputable distributor
It is pin compatible with the TDA2822, works fine, good to 15v or so.
The original TDA2822 in the DIP package from ST is no longer available,
though ST does still sell it in an SOIC.
There are a half dozen different makers of clone TDA2822's, many of them work fine.
Some of the clones work ok but only with a maximum supply voltage of around 6v.
With the WX TDA2822 clone operating at 12v in the uBitx, the chip might work fine
for weeks and then suddenly decide to blow bits of silicon across the room.
A fun bit of trivia from?
? "The LM386 was invented by Ernie Leroy Long at Motorola in 1969. It was originally for part of a fuel injection system for a Ford Car."
If true, I assume it went by a different name at the time.
I'm a bit suspicious, a google for "LM386 Ernie" gets many copies of exactly the above phrase with no further information or attribution.
The "LM" prefix suggests National Semiconductor, perhaps it had a different name coming out of Motorola.
Jerry, KE7ER
?
On Mon, Dec 16, 2019 at 07:10 AM, V Zecchinelli wrote:
Good Morning,
I have a quick question on FT8 with uBitx V5 using USB soundcard (7.1 Channel).? Even with the volume of uBitx set very low the 2822 audio amp gets very hot and if volume set over 1/4 it will fail catastrophically.? On phone I can listen to the radio all day with no issues.? Seems odd.? Anyone else seen this problem?
Thanks,
Vince
|
I managed to download the v6 code from github.com/afarhan a couple days ago.
Today I no longer see the v6 code
I assume it has been removed while a bug or two gets fixed,
and a new version will be posted when it's ready.
Jerry, KE7ER
toggle quoted message
Show quoted text
On Mon, Dec 16, 2019 at 01:40 AM, Matt 9V1MH / VK3AMH wrote:
Hi Farhan
I went to the link for the v6 code??
however the underlying URL to that text is?
if i change the v5 to v6 i.e.?
github says page not found??
v6 also does not appear in any of the repositories listed
cheers
Matt
|
Re: Raduino - what do I need to update (and learn to update) it?
The original Arduino Nano has an FTDI FT232 chip on it for translating USB communications
from you computer into UART TX and RX signals that the ATMEGA328P processor can understand.
? ??
? ??
The $3 Nano clone that comes on the Raduino from HFSignals has the CH340 chip on it, not the FT232.
? ??
? ??
? ??
Under Ubuntu Linux, software drivers for both chips are already present, and communication to the Nano over the USB cable just works.
I am quite happy with using the Arduino IDE under Linux.
As I recall, under Windows the FT232 driver is present, but the CH340 drive is not.
You will have to download the CH340 software driver from the web to your Windows machine
before it will talk over the USB cable to a CH340 Nano clone.
On a Mac, it is possible to get either chip to work, but some people have had trouble.
I am not entirely sure what the issues were, should be up on our wiki.
The FT232 chip was the standard for years and years.
There have been fake FT232 chips, and FTDI's driver decided to brick any fake FT232 chips
to keep the FTDI help lines from being deluged by people with FT232 clone chips that didn't work.
Probably not an issue anymore, as anything much under $20 has moved to the CH340.
Nothing like this has ever come up with the CH340 chips.
The CH340 chips work just fine.
Though I suspect there are malware laden CH340 driver downloads to be had if you look hard enough.
Jerry, KE7ER
toggle quoted message
Show quoted text
On Mon, Dec 16, 2019 at 06:34 AM, Jack, W8TEE wrote:
Many use the CH340 driver instead of the "true" Arduino driver.
|
Version 5 used lm386. It is expected to withstand 12v.? If you are ging much higher, pl reduce to 12v.
On Mon, 16 Dec 2019, 8:41 pm V Zecchinelli, < n1vin@...> wrote: Good Morning,
I have a quick question on FT8 with uBitx V5 using USB soundcard (7.1 Channel).? Even with the volume of uBitx set very low the 2822 audio amp gets very hot and if volume set over 1/4 it will fail catastrophically.? On phone I can listen to the radio all day with no issues.? Seems odd.? Anyone else seen this problem?
Thanks,
Vince
|
Good Morning,
I have a quick question on FT8 with uBitx V5 using USB soundcard (7.1 Channel).? Even with the volume of uBitx set very low the 2822 audio amp gets very hot and if volume set over 1/4 it will fail catastrophically.? On phone I can listen to the radio all day with no issues.? Seems odd.? Anyone else seen this problem?
Thanks,
Vince
|
Re: Raduino - what do I need to update (and learn to update) it?
Jack's right on that one - all the NANO clones I've gotten off Amazon lately need the "old bootloader" option to get a good upload after compile.
Jim - W0EB
------ Original Message ------
Sent: 12/16/2019 8:34:33 AM
Subject: Re: [BITX20] Raduino - what do I need to update (and learn to update) it?
Two things about clones. Many use the CH340 driver instead of the "true" Arduino driver. Second, even with the CH340 driver installed for the Nano, sometimes an Upload hangs the system. If that happens to you, underneath the Tools --> Boards menu option is a Tools --> Processor option. That menu option has 3 choices, and usually the first is selected by default. However, some clones appear to be using much earlier versions of the bootloader, so try the 2nd option ("Old Bootloader"). That often fixes the hanging problem.
Jack, W8TEE
On Monday, December 16, 2019, 9:17:53 AM EST, John AE5X < ae5x@...> wrote:
On Sun, Dec 15, 2019 at 07:18 PM, Jerry Gaffke wrote:
I suggest you get these Nano clones off of Amazon:
Thanks Jerry - done! 73, John AE5X
-- Jack, W8TEE
|
Re: Raduino - what do I need to update (and learn to update) it?
Two things about clones. Many use the CH340 driver instead of the "true" Arduino driver. Second, even with the CH340 driver installed for the Nano, sometimes an Upload hangs the system. If that happens to you, underneath the Tools --> Boards menu option is a Tools --> Processor option. That menu option has 3 choices, and usually the first is selected by default. However, some clones appear to be using much earlier versions of the bootloader, so try the 2nd option ("Old Bootloader"). That often fixes the hanging problem.
Jack, W8TEE
On Monday, December 16, 2019, 9:17:53 AM EST, John AE5X <ae5x@...> wrote:
On Sun, Dec 15, 2019 at 07:18 PM, Jerry Gaffke wrote:
I suggest you get these Nano clones off of Amazon:
Thanks Jerry - done! 73, John AE5X
-- Jack, W8TEE
|
Re: Raduino - what do I need to update (and learn to update) it?
On Sun, Dec 15, 2019 at 07:18 PM, Jerry Gaffke wrote:
I suggest you get these Nano clones off of Amazon:
Thanks Jerry - done! 73, John AE5X
|
Re: Brand new uBiTX v5.0 quality issue ?
Diego before powering up your board measure the trimmer resistors. From the underside of the board measure both trimmers with your ohm meter and compare them. They should measure about the same to ground comparing pin to pin. If not I would replace the trimmer nearest the heat sink because it might have been damaged. Hopefully there was enough wiggle room and it survived the adjustment to clear the heat sink installation.?
toggle quoted message
Show quoted text
On Dec 16, 2019, at 04:48, pluto@... wrote:
? Hi all ! My uBiTX v5.0 just delivered !
As you can see from the attached photos, the quality of the wiring of the blue trimmer one is very poor.
I am convinced that the board sent to me could not have passed the quality controls !!
I ask you if this problem can affect the correct functioning of the rig and if there is any particular procedure to check the functioning of the two blue trimmers.
Thank you very much !!
Diego, I8TIF
?
<80496241_2831704516849753_4403795415024009216_n.jpg>
<80221680_2831704456849759_251660533512536064_n.jpg>
<79926223_2831704650183073_4303918222593228800_n.jpg>
?
|
Re: Brand new uBiTX v5.0 quality issue ?
Thank you for infos and photo Gerry!
The solder are okay. I will follow the guide to verify the functioning of the trimmers.
Cheers,
Diego
|
Re: Brand new uBiTX v5.0 quality issue ?
Solder joints look fine. It's hard to be 100% sure from the image, though. I suspect what happened is that the trimmers were inserted with the leads at full length, then when the heatsink was added it moved the trimmer, which was subsequently soldered. Just checking against my v3 board it looks like the heatsinks are a bit deeper on your board which causes it to intrude on the footprint of the trimmer. If you go through the bias adjustment procedure you should be able to confirm that they are working -  BRs Gerry
|
Brand new uBiTX v5.0 quality issue ?
Hi all ! My uBiTX v5.0 just delivered !
As you can see from the attached photos, the quality of the wiring of the blue trimmer one is very poor.
I am convinced that the board sent to me could not have passed the quality controls !!
I ask you if this problem can affect the correct functioning of the rig and if there is any particular procedure to check the functioning of the two blue trimmers.
Thank you very much !!
Diego, I8TIF
?
?
|
Eric,
When you tighten the BPF to around 300Hz, it does for sure. This would not be possible on the uBitx without significant rework. Yes, the Goetzel algorithm can be tuned to a specific frequency but it is still error prone where there are many signals in the passband.
/ Gerry
|
Hi Farhan
I went to the link for the v6 code??
however the underlying URL to that text is?
if i change the v5 to v6 i.e.?
github says page not found??
v6 also does not appear in any of the repositories listed
cheers
Matt
|
Joel,
I can see your point, but I already have enough big colour screens in my life. I like the minimalism to the original design.
/ Gerry
|
Jim Sheldon
Skip Davis
Matt 9V1MH/VK2AMH/YF2AAH