Date   

Re: IF shift needed for listening correctly V4 UBITX #bitx20help

Evan Hand
 

What mode, SSB or CW?  That makes a difference.  The advice I gave Andrea was for SSB.  I have not really used the CW mode for QSOs, so I do not have direct experience with the offsets of transmission vs reception.  There are settings in the Memory Manager to adjust the transmit offset to be the same as the sidetone selected. Again, I have not used it so cannot comment on how to do it, nor on its effectiveness.

73
Evan
AC9TU


Re: ubitxv6 mic not working fine #ubitxv6

mike.j.kasper@...
 

One more bad mic - mine came out of the box non functioning!  Nice to start the project with a project isn't it!  I'd say they need to start shipping it with a mic that actually works... or no mic at all.


Re: IF shift needed for listening correctly V4 UBITX #bitx20help

Rubens Kamimura
 

All,

Good Morning. Sorry for the placement in this topic, but, I have an uBITX v4, firmware v1.097, this with differences in transmission and reception frequencies, how do I fix this, can someone help me? Appreciate. 73's for Rubens PY2PVB GG49in07
--


Rubens Kamimura
Tel. +55(18) 3746-8680 ramal 116
Cel. +55(18) 9-9819-2225 WhatsApp ou (18) 9-9819-2255 


Em dom., 21 de jun. de 2020 às 07:43, <andrea@...> escreveu:

Hi, 
since the beginning I'm experiencing the fact that I nee to move the IF aroundf 1800 - 2000 (it varies a little thorugh the different band) for receiving the correct modulation.
I was thinking it was depending by a different firmware (I was using the nextion compatible fw) but after i decided to go back to the original implementation this issue remains the same.

What I can do?


Re: IF shift needed for listening correctly V4 UBITX #bitx20help

Evan Hand
 

Yes, all of the calibrations are available in both the onboard software and the Memory Manager.  This does depend on which of the multiple Nextion screen files you have used for your upgrade.  In order to conserve memory, some of the versions removed the calibration graphic screen, and you need to use the yellow box.  The yellow box is on all versions as far as I know.

For the Memory Manager, you need to read and write the uBITX to get and then update after changes are made.  Remember that the Raduino needs to be completely powered down and restarted for some of the changes to be put into use.  This means the uBITX needs to be turned off, and the USB cable removed.  Another point on the Memory Manager is to always close the connection to the uBITX before you remove the USB cable, otherwise, you will need to close and reopen the Memory Manager to establish the connection.  I follow the convention of:
1 - reading the uBITX
2 - save the current config to a temp file
3 - make the changes
4 - write to the uBiTX
5 - completely power down the uBITX
6 - restart and test
7 - If all is good, go back to the Memory Manager, read the config, and then save it to a permanent file.

My personal experience with your symptoms was solved with the calibration process.

I hope this clarifies for you.
73
Evan
AC9TU


Re: ubitxv6 mic not working fine #ubitxv6

Evan Hand
 

The short answer is maybe, with an adapter.  The electret element in the typical earbud is specified for 1.5 volts of bias.  Most work with a range of bias (the ones supplied with the versions prior to 6 were rated 7 to 14 volts).  The 3.5 mm jack on the v6 would supply approximately 11 volts depending on the voltage supplied to the rig.  I am not sure if the earbud mic would survive the excess voltage.  In the Baofeng mics supplied with the v6, the LED and current limiting resistor are used as a voltage divider to drop the approximately 11 volts to approximately 3 volts.  See the hand sketch with measurements from Reed in this message: https://groups.io/g/BITX20/message/79608

If you build the above voltage divider into the adapter, then yes, a pair of earbuds could be used.  I am not sure that anyone has done that at this point.  Of course, you would also need to include a TRRS 3.5 mm jack for the earbuds.  NOTE: the Apple earbuds have the mic connected to the SLEEVE of the plug, and the ground to the RING closest to the SLEEVE.  You could add a separate cable and jack to connect the earphones to the audio out of the ubitx and then to the earbuds.

FWIW, and please let me know if you find any contradictions to the above.
73
Evan
AC9TU


Re: ubitxv6 mic not working fine #ubitxv6

LAKSH MUTHU
 

Dear All,
       GOOD DAY.
       I also have the same problem.Can we use the Mic available in the headsets of the mobile phones in stead of the existing MIC in Baofeng Microphone (supplied uBITX V6) by by disconnecting the existing Mic duly retaining the other (PTT) connections etc;?
           73
        MUTHU
       VU2LMN


Re: ubitxv6 mic not working fine #ubitxv6

LAKSH MUTHU
 

Dear All,
     Good Day.
        Can we use the microphone available in the head set of the mobile phones and disconnecting the existing mic in Baofeng  (mic system supplied with UBITX V6) duly retaining the other (PTT) connections?
    73
 MUTHU
VU2LMN


Re: #v5 #power issue #power #v5

 

My boards have worked continuously on 15V with no issues. The power output
increases, you only need to put a heat sink on Raduino 5V regulator as it gets
uncomfortably hot. It may then drop voltage.

If the board has 2822 audio amp then put a 9 or 10 78L09 or 10 in series with
chip supply. This mod is documented.

Trace power on the board and find what is happening.

Raj


At 25/06/2020, you wrote:
Another mystery!

I power my uBitx v5 with a LiFePo 3.5Ah battery from Bioenno. It's a new battery but a little while back, the radio stopped powering up. Long story short, the battery was found to have a bad BMS (battery mgt system). The only symptom that I might have needed to pay more attention to before the radio failed was that the battery put out a little more than the 13.8v that nominal 12v systems typically do. My VOM is analog but it looked to be between 14 and 15v.


Re: DEFECTIVE RADUINO FOR V5

 

How have you concluded that it is defective?

At 24/06/2020, you wrote:
IS IT POSSIBLE TO RETURN THE DEFECTIVE RADUINO THAT WAS SUPPLIED WITH MY V5 DAVE C GW0NVF


Re: has the supply chain for the uBITX been affected by the covid-19

Support HF Signal
 

Hello Dave C,

We have asked you in your post (IS IT POSSIBLE TO RETURN THE DEFECTIVE RADUINO THAT WAS SUPPLIED WITH MY V5    DAVE C  GW0NVF https://groups.io/g/BITX20/topic/75067622#80043) to send us the details of your order ID, Date of Purchase(Paypal Transaction ID) and the Serial number of the board and the Raduino.to sales@...  and we shall ask the technical team to look into this.

Thanks and Regards,

Thomas
--
Support@...


Re: Power supply

Mike WA0YCN
 

I have one of these installed in my uBitx case.  Works great. 


https://www.amazon.com/dp/B00MF70BPU/ref=emc_b_5_t


--
Mike
WA0YCN


Re: uBitX assembled: bit of a challenge with alignment/bfo adj - Volume/switch knob fix

McRuss
 

I finally got the case and antenna adapter for my V6 and figured out how to do the calibration (from the video).  But I had the same issue, problems with getting to the set-up menu.  Once I did get to it but then it seemed be locked and I couldn't get out without a 'cold boot.'  After a number of failures, I realized what the problem was:  the tuning knob was TOO FAR in on the shaft (opposite problem from the volume knob) and wouldn't go in far enough to activate the set-up menu.  I was then able to go in and do the calibration but I'm not sure the frequency setting is right.  I found an AM station, set it to the correct freq and then tuned to zero beat.  But....zero beat was not where the station audio was the clearest.  I listened to the video again and it seems to me zero beat there was not at the clearest audio either.  So that is what I went with.  Will have to wait a week or so before I can get back on during the day and play with it more.

Russ
K5FJR


Re: #v5 #power issue #power #v5

Jerry Gaffke
 

Could indeed be a defect in both the Biennio BMS and in the uBitx, as you suspect.

Very weird that the uBitx works (for awhile) with the Biennio, but not with a bench 12v supply.
You could be right that something in the uBitx needs an the extra volt or two
that the fully charged Biennio offers, but not the bench supply.
That would explain why the BIennio only works for awhile, until the cell voltage drops some.
The Raduino regulator is the first place I'd look.

Good luck!

Jerry, KE7ER


On Wed, Jun 24, 2020 at 01:47 PM, Tim Helming wrote:
Hi Jerry et al
 
The other sources I’ve tried are plenty beefy—the 30A supply I use for my home station (incl Kenwood TS-590s) and some 30Ah AGMs with full charges. Current draw isn’t our culprit. 
 
I’ll try measuring the voltage directly at the regulator—not sure why I hadn’t already thought of that. I doubt it is thermal protection cutout because I’ve tried to power on the rig from dead cold from the 30A supply. Also, when the LiFePo cuts out and I “reset” it, the radio comes right back to life. 
 
Not sure about the BMS. I can’t imagine that I did anything to hurt it, and it did work ok for a while. Never charged it with anything but the charger it came with. I suspect it had a lurking factory defect—a component that was almost dead and then did die once it was put into service. 
 
I’ll reply again when I’ve taken some measurements off the voltage regulator. 
 
Tim


Re: #v5 #power issue #power #v5

Tim Helming
 

Hi Jerry et al

The other sources I’ve tried are plenty beefy—the 30A supply I use for my home station (incl Kenwood TS-590s) and some 30Ah AGMs with full charges. Current draw isn’t our culprit. 

I’ll try measuring the voltage directly at the regulator—not sure why I hadn’t already thought of that. I doubt it is thermal protection cutout because I’ve tried to power on the rig from dead cold from the 30A supply. Also, when the LiFePo cuts out and I “reset” it, the radio comes right back to life. 

Not sure about the BMS. I can’t imagine that I did anything to hurt it, and it did work ok for a while. Never charged it with anything but the charger it came with. I suspect it had a lurking factory defect—a component that was almost dead and then did die once it was put into service. 

I’ll reply again when I’ve taken some measurements off the voltage regulator. 

Tim



On Jun 24, 2020, at 12:28, Jerry Gaffke via groups.io <jgaffke@...> wrote:

Tim,

Hmmm, radio only powers up when tied to a big battery capable of supplying several amps,
not when powered from a wimpy 1 or 2 amp 12v supply?
Check current consumption into the uBitx when receiving, should be under a half amp.
Is something getting hot when you power the rig from the big battery?
If the rig is drawing more current than the Bionenno is designed to deliver, the BMS circuit
will shut the rig down.

Maybe try powering an 1157 type incandescent tail light from the battery, see if that behaves?
That's about 0.66 amps on the tail light filament, about 3 amps on the brake light filament.

I haven't looked much at the v6, but I assume the voltage regulator you refer to 
is something like an LM7805 on the raduino.  What is the voltage going into this regulator
when it is failing?   If it's over 7 or 8 volts, it should be doing just fine.
It is possible that the regulator overheats and goes into shutdown (till it cools off)
if the battery voltage is too high or if there is an inadequate heatsink on that regulator.

That BIoenno battery probably has four LiFePO4 cells, from  
    https://www.robotshop.com/media/files/pdf/hyperion-99v-2100mah-lifepo4-transmitter-pack-datasheet.pdf
>  Each LiFePO4 cell has a NOMINAL voltage of 3.3V. A fully charged LiFePO4 cell is 3.6V, and a fully depleted LiFePO4 cell is 2.5V. 

So nominally 3.3*4=13.2volts,  fully charged 3.6*4=14.4volts,  discharged:  2.5*4=10volts

The Bionenno datasheet says the charging voltage maxes out at 14.6volts:
  https://cdn.shopify.com/s/files/1/0219/0154/files/BLF-1220A_User_Manual_rev_04_23_2019.pdf?209

Those are open circuit voltages, when drawing current the internal resistance of the battery will
bring that voltage down a bit.  You will seldom see exactly 12.0 volts out of that battery.

I am curious what symptoms were seen to verify that the BMS of the Bioenno was failing.
And curious why it failed, as that should provide pretty much full protection from abuse.
From the manual:
>    Protection: PCM/BMS Overcharge, overdischarge, overcurrent, temperature, balancing

Was the battery perhaps charged by something other than a Bioenno provided charger
prior to the BMS failure?

Jerry, KE7ER


Re: #v5 #power issue #power #v5

Jerry Gaffke
 

Tim,

Hmmm, radio only powers up when tied to a big battery capable of supplying several amps,
not when powered from a wimpy 1 or 2 amp 12v supply?
Check current consumption into the uBitx when receiving, should be under a half amp.
Is something getting hot when you power the rig from the big battery?
If the rig is drawing more current than the Bionenno is designed to deliver, the BMS circuit
will shut the rig down.

Maybe try powering an 1157 type incandescent tail light from the battery, see if that behaves?
That's about 0.66 amps on the tail light filament, about 3 amps on the brake light filament.

I haven't looked much at the v6, but I assume the voltage regulator you refer to 
is something like an LM7805 on the raduino.  What is the voltage going into this regulator
when it is failing?   If it's over 7 or 8 volts, it should be doing just fine.
It is possible that the regulator overheats and goes into shutdown (till it cools off)
if the battery voltage is too high or if there is an inadequate heatsink on that regulator.

That BIoenno battery probably has four LiFePO4 cells, from  
    https://www.robotshop.com/media/files/pdf/hyperion-99v-2100mah-lifepo4-transmitter-pack-datasheet.pdf
>  Each LiFePO4 cell has a NOMINAL voltage of 3.3V. A fully charged LiFePO4 cell is 3.6V, and a fully depleted LiFePO4 cell is 2.5V. 

So nominally 3.3*4=13.2volts,  fully charged 3.6*4=14.4volts,  discharged:  2.5*4=10volts

The Bionenno datasheet says the charging voltage maxes out at 14.6volts:
  https://cdn.shopify.com/s/files/1/0219/0154/files/BLF-1220A_User_Manual_rev_04_23_2019.pdf?209

Those are open circuit voltages, when drawing current the internal resistance of the battery will
bring that voltage down a bit.  You will seldom see exactly 12.0 volts out of that battery.

I am curious what symptoms were seen to verify that the BMS of the Bioenno was failing.
And curious why it failed, as that should provide pretty much full protection from abuse.
From the manual:
>    Protection: PCM/BMS Overcharge, overdischarge, overcurrent, temperature, balancing

Was the battery perhaps charged by something other than a Bioenno provided charger
prior to the BMS failure?

Jerry, KE7ER


Re: #v5 #power issue #power #v5

Dale Parfitt
 

Hi Tim,

It is a simple procedure to measure the output of the regulator and see whether it is nominal  or not. A 7805CV is rated as max input (from memory) of around 25V.  Let us know what you find.

 

Dale W4OP

 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of wt1im@...
Sent: Wednesday, June 24, 2020 2:51 PM
To: BITX20@groups.io
Subject: [BITX20] #v5 #power issue

 

Another mystery!

I power my uBitx v5 with a LiFePo 3.5Ah battery from Bioenno. It's a new battery but a little while back, the radio stopped powering up. Long story short, the battery was found to have a bad BMS (battery mgt system). The only symptom that I might have needed to pay more attention to before the radio failed was that the battery put out a little more than the 13.8v that nominal 12v systems typically do. My VOM is analog but it looked to be between 14 and 15v. 

With the LiFePo out of commission, I thought, no problem, I have lots of 12v sources. 

NONE of them would power up the radio. All verified good power sources that work fine on other things, test well, etc.

Meanwhile, the fellow ham who diagnosed the BMS issue charged my LiFePo by bypassing its BMS and using an external one. 

With the LiFePo back, it, and *only* it, will power the radio. But not for long, due to the BMS issues (I'm going to get a new BMS)--it cuts the voltage to zero. I can "reset" it by momentarily connecting it to a charger. Not a viable solution, just part of the troubleshooting chain. 

I do notice that the LiFePo shows 12v now--not the higher voltage it was showing before all of this happened.

My best guess is that the voltage regulator in the uBitx is bad, and will only power the rig with a very narrow range of voltages. The LiFePo is the only DC source I have handy that delivers less than 13.8v. 

I have read that the uBitx "wants" 12v or less. But the symptoms of running it with a bit more seem to be things like distorted RX audio. I haven't seen anyone say that 13.8v actually kills the radio. 

My best guess is that the 7805cv voltage regulator is bad It's not fully dead since I can get the rig to turn on with (only) the LiFePo, but perhaps it's gravely injured. Maybe the 14-15v that the LiFePo originally delivered fried it? Is my best next step to replace the regulator and see what happens? 

And--if 13.8+v really did kill this regulator, does it make sense to swap it with another part that can accept slightly higher voltages? I really am hoping I don't have to do deeper hacking on the power supply system to drop the voltage below 13.8 since that is such a universal DC voltage. A swap-in regulator replacement would be ideal. 

Thanks in advance!

Tim


#v5 #power issue #power #v5

Tim Helming
 

Another mystery!

I power my uBitx v5 with a LiFePo 3.5Ah battery from Bioenno. It's a new battery but a little while back, the radio stopped powering up. Long story short, the battery was found to have a bad BMS (battery mgt system). The only symptom that I might have needed to pay more attention to before the radio failed was that the battery put out a little more than the 13.8v that nominal 12v systems typically do. My VOM is analog but it looked to be between 14 and 15v. 

With the LiFePo out of commission, I thought, no problem, I have lots of 12v sources. 

NONE of them would power up the radio. All verified good power sources that work fine on other things, test well, etc.

Meanwhile, the fellow ham who diagnosed the BMS issue charged my LiFePo by bypassing its BMS and using an external one. 

With the LiFePo back, it, and *only* it, will power the radio. But not for long, due to the BMS issues (I'm going to get a new BMS)--it cuts the voltage to zero. I can "reset" it by momentarily connecting it to a charger. Not a viable solution, just part of the troubleshooting chain. 

I do notice that the LiFePo shows 12v now--not the higher voltage it was showing before all of this happened.

My best guess is that the voltage regulator in the uBitx is bad, and will only power the rig with a very narrow range of voltages. The LiFePo is the only DC source I have handy that delivers less than 13.8v. 

I have read that the uBitx "wants" 12v or less. But the symptoms of running it with a bit more seem to be things like distorted RX audio. I haven't seen anyone say that 13.8v actually kills the radio. 

My best guess is that the 7805cv voltage regulator is bad. It's not fully dead since I can get the rig to turn on with (only) the LiFePo, but perhaps it's gravely injured. Maybe the 14-15v that the LiFePo originally delivered fried it? Is my best next step to replace the regulator and see what happens? 

And--if 13.8+v really did kill this regulator, does it make sense to swap it with another part that can accept slightly higher voltages? I really am hoping I don't have to do deeper hacking on the power supply system to drop the voltage below 13.8 since that is such a universal DC voltage. A swap-in regulator replacement would be ideal. 

Thanks in advance!

Tim


Re: ubitxv6 mic not working fine #ubitxv6

KB9WOO
 

Are you putting batteries in that power mic?

--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: IF shift needed for listening correctly V4 UBITX #bitx20help

andrea@...
 

the firmware version is correct. 

I can think that it is mostly related to a missing calibration.
I overwrite the firmware directly on the original nano but as you wrote this shouldn't affect the data in the eeprom. I also used the KD8CEC software manager for donwloading the data. The calibration settings are acccessible from the software?
In any case I think i'll go for calibration procedure as soon 

Thank you for the references.
Ciao
Andrea


Re: uBitX assembled: bit of a challenge with alignment/bfo adj - Volume/switch knob fix

Richard West <rewest71@...>
 

You're right, Gordon. Thank you.

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