Date   

Re: B40 LM386 and µB TDA2822 and that 470µF Cap

Arvo W0VRA
 



The one in mine, s/n 263/2.

Here's the datasheet for this variant:  http://pdf1.alldatasheet.com/datasheet-pdf/view/210172/FCI/TDA2822M.html

It has a max supply voltage of 16V.

Has anyone seen one of these FCI amps explode?


Re: Bitx40 with Raduino stopped working #bitx40help #bitx40

Jamie - KO4T
 

I did check that. It was right.  When hooked to the PC the display lights up but on the bitx40 it seems dead. The red power light it not lighting up under the display either on the bitx but works when hooked to the PC. But like I said there is power at the Radunio... I'm totally stumped.

73,
Jamie - KW4XR


Re: Bitx40 with Raduino stopped working #bitx40help #bitx40

Allard PE1NWL
 

Make sure the the 16-pin connector to the display is positioned correctly
(you can easily shift it one position by mistake)

73 Allard PE1NWL

On Fri, March 2, 2018 14:55, Mvs Sarma wrote:
try replacing dispay

On 2 Mar 2018 19:22, "Jamie Dean - KW4XR" <jdean72985@gmail.com> wrote:

I'm hoping someone has a idea on what to do to fix this.

My YL and I built the Bitx40 with the Raduino three nights ago. It was
working fine till today I
unplugged the Radunio to mount it in a case. When I hooked it back up
the
display will not light up and only a few clicks in the speaker. The unit
will still key with no output power. I checked the voltage and it still
has
12.58 volts at the Radunio. I also hooked the Radunio to the PC to check
if
it was dead. It was able to be recognized and the ardunio software was
able
to talk to it.

Any ideas what might have happened? All connections look ok.

Thanks in advance,
Jamie Dean - KW4XR
Morganton, NC USA


Re: TDA2822 ill treatment test! Photo of blown TDA

DrZ <zehrhj2@...>
 

Here is what mine looks like - it's the one that came in the Bitx - Howard


Re: Anyone need a genuine uBITX Raduino? #ubitx

Jim Sheldon
 

One of the two Raduinos (the older one) has been sold, the other one is still available.  $33 shipped in the U.S,   $40 shipped internationally - customs and VAT are the recipient's responsibility.  

Remember this is the Raduino from a uBITX, not a BITX40.  


Jim, W0EB    pleaase email me off the reflector if you are interested.   w0eb |at| cox dot net

------ Original Message ------
From: "Jim Sheldon" <w0eb@...>
Sent: 2/27/2018 10:40:03 PM
Subject: [BITX20] Anyone need a genuine uBITX Raduino? #ubitx

I have two genuine Raduino cards.  One that's been used (the only modification to both of these cards is a 47 ohm 2 watt resistor in series with the 7805 regulator to drop the voltage a bit so it doesn't have to work too hard at input voltages of 12-13 volts DC.  I've also re-located the 7805 to the back side of the card so it doesn't get in the way of things. The second is basically new except for the 47 ohm resistor mod.   Oh and both of these have the 4.7K resistor on the CW input installed between pin 2 and pin 3 so you can connect pin 2 directly to the tip contact of your key jack.

I am not going to use either of these Raduino's.  I'd like to get US $20 (plus shipping) for the older one and $25 (plus shipping) for the one that came in the kit I just got last week.

Please, if you're interested, lets take the discussion private so as not to clutter up everyone else's email.   My email address is good on QRZ under W0EB.  I'd prefer to ship to US addresses as the minimum international shipping for these would be $14.25 US.

It's 10:30 p.m. here and I'm going to shut down for the night so I won't be able to answer any emails until tomorrow morning (US Central time).

Jim - Sheldon, W0EB


Re: TDA2822 ill treatment test!

Jim, N5IB
 

Here's the one on mine.
852 of batch 2
With apologies to Monty Python.. it's not dead yet
And has a 10 ohm resistor...

N5IB


Re: Bitx40 with Raduino stopped working #bitx40help #bitx40

MVS Sarma
 

try replacing dispay

On 2 Mar 2018 19:22, "Jamie Dean - KW4XR" <jdean72985@...> wrote:
I'm hoping someone has a idea on what to do to fix this.

My YL and I built the Bitx40 with the Raduino three nights ago. It was working fine till today I 
unplugged the Radunio to mount it in a case. When I hooked it back up the display will not light up and only a few clicks in the speaker. The unit will still key with no output power. I checked the voltage and it still has 12.58 volts at the Radunio. I also hooked the Radunio to the PC to check if it was dead. It was able to be recognized and the ardunio software was able to talk to it. 

Any ideas what might have happened? All connections look ok. 

Thanks in advance,
Jamie Dean - KW4XR
Morganton, NC USA


Bitx40 with Raduino stopped working #bitx40help #bitx40

Jamie - KO4T
 

I'm hoping someone has a idea on what to do to fix this.

My YL and I built the Bitx40 with the Raduino three nights ago. It was working fine till today I 
unplugged the Radunio to mount it in a case. When I hooked it back up the display will not light up and only a few clicks in the speaker. The unit will still key with no output power. I checked the voltage and it still has 12.58 volts at the Radunio. I also hooked the Radunio to the PC to check if it was dead. It was able to be recognized and the ardunio software was able to talk to it. 

Any ideas what might have happened? All connections look ok. 

Thanks in advance,
Jamie Dean - KW4XR
Morganton, NC USA


Bitx volume knob solution.

DrZ <zehrhj2@...>
 

I found a piece of metal tubing that fit over the volume control shaft and also into a regular knob.  I cut it to length and then notched it for the set screw.
Howard K4LXY


BitX Volume Knob 3D Print File

Michael Hagen
 


 


I was asked yesterday for STL files for Knobs for Bit X.

This is the volume knob with the small shaft hole.  You could drill it out for 6mm pots?

 



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


BitX Volume Knob 3D Print File

Michael Hagen
 


I was asked yesterday for STL files for Knobs for Bit X.

This is the volume knob with the small shaft hole.  You could drill it out for 6mm pots?

 



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Bit Tune Knob 3D Print File

Michael Hagen
 



Here is the STL file for the Tune Knob for 3D Printing.  1.2" Dia.
 



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


BITX QSO Afternoon/Night, Sunday, March 4, 3PM/7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere

John P
 

BITX QSO Afternoon/Evening, Sunday, March 4, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.

Join us as we make contacts from BITX40 to BITX40 on 7.277 MHz in 40 meters!

This is a worldwide event for BITX40 stations starting at 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


Re: uBit Software

Willy
 

For me, the most amazing thing about Ian's code is that it allows the uBitx to be computer controlled. I have made many "automated" FT8 contacts using my CECuBitx. 
73 Willy W1LY

On Fri, Mar 2, 2018 at 12:46 AM, Michael Shreeve <shreevester@...> wrote:
The quickest way, not necessarily the most educational, is to use the little uploader he introduces called Xloader and use his hex files. He describes the method in the "how to upgrade" spot. 

On Thu, Mar 1, 2018 at 9:23 PM, Mike Woods <mhwoods@...> wrote:
Mike

It sounds like you haven't yet ventured into the menu system!

Push the encoder (tune) button and turn the dial.   Wow!

It is pretty self-explanatory, except for the Settings menu.  Select the settings menu, and wait for it to return to the normal mode (not menu mode).  Press the encoder button again, and lo and behold you will find a whole lot more menu items when you turn the dial.

Hope this helps!

There are a number of references in the code to Farhan's original (including the pot which has never been in the production uBITx).  However, virtually the entire code has been rewritten by Ian.

Mike ZL1AXG


On 2/03/18 5:54 PM, Michael Hagen wrote:

Wow, I can't believe the code he came up with.   What a Whiz he must be!  To compile the code you have to put it in a folder with the main name same as the ino file.  But, you have to know the that name?  Jack came up with ubitx_20.  It worked.

So the VFOs can be on other bands?  You can change bands by picking the other VFO?   Is there a description of this top line somewhere or do you have to run the configuration manager?  I  looked thru the code, thinking I could find a description of what is on each line.  Could not figure it out much.  Also in the code he discusses a pot for tuning?   Might be old stuff?

Thanks for the help,  I will look for the configuration manager.

Mike


On 3/1/2018 8:36 PM, Mike Woods wrote:
Mike

You obviously got the software to install on your uBITx!

That 14.150k is the frequency of your other VFO (if you are on VFO A then that is the frequency of VFO B).  This is handy if you are working SPLIT which is provided for in the KD8CEC software.  A real contesting feature especially for 40m ...

If you also download the Windows (or Linux) software developed by Ian KD8CEC called "UBitx Manager" - see the link on ubitx.net homepage, then you can configure this top line how you want it.   From memory that includes putting your callsign there  if you are sufficiently vain Hi Hi!

73 Mike ZL1AXG

On 2/03/18 5:21 PM, Michael Hagen wrote:

Thanks Jack,

Putting in a folder with the same name made it compile and load.

I don't have any thing hooked up, just on USB power.

First line of the LCD says "14.150k  50Hz ST"

Second says "  CW: 7.150.000"

No wires hooked up, I wonder what 14.150K means.

Might be a place to put call sign?  So it is garbage from eeprom?

TNX

Mike, WA6ISP

 
On 3/1/2018 6:15 PM, Michael Hagen wrote:

That file error ed on compile for me.  I had it all in the same directory, but not named that.

I knew that there was no way these files could all link, or know of each other.

I like programming, never could understand where the rules are for the environment. 

Thanks, I just think this stuff should follow standard Arduino protocol,  just one big file?

That's what made it so popular "C for Dummies".

Thanks Jack

Dinner and then back to it?

Mike, WA6ISP


On 3/1/2018 6:01 PM, Jack Purdum via Groups.Io wrote:
The file with setup() and loop() becomes the "main" INO file. I believe that file is named ubitx_20.ino. This means you must place all of those files in a directory named ubitx_20. Personally, I wish Lee had not done it this way since making them all INO files means that no type checking is performed on functions during the compile. It would be better to keep the one INO file and rename the others to *.cpp (i.e., C++) files, which would reinstate type checking.

Jack, W8TEE



From: Michael Hagen <motdog@...>
To: BITX20@groups.io
Sent: Thursday, March 1, 2018 8:53 PM
Subject: Re: [BITX20]uBit Software

I was looking at KD8CEC for uBit.
But there are a lot of ino files when I download?  So I am lost.
Any instructions what file to load into Arduino IDE ?    I don't know what I am doing looking at the downloaded files.
Is there a name for the latest version of a file that is the whole thing?
I tried, just get errors.   So I need step by step instructions.
So where to go, what file to load into Nano?  If there are multiple ino files, how does it know of the others?
If not CEC, what should I load?
Thanks
Mike, WA6ISP
 



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


--
Mike Woods
mhwoods@...

-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


--
Mike Woods
mhwoods@...




--
Michael Shreeve N6GRG
15901 Cloverdale Road
Anderson, CA 96007
530-410-8678
"Don't worry about a thing, 'Cause every little thing gonna be all right!" -Bob Marley





Re: Component in schematic

Michael Hagen
 

Pick a coil or transformer from your library.  Copy it to a new part name.

Then copy and paste items until you get your transformer you want.  Save as new Part Name.

Just be sure NOT to write over the original part, be sure to make a new part.

73's

Mike, WA6ISP


On 3/2/2018 4:19 AM, qonita.salimah@... wrote:

Sorry, I'm try to search eagle library for this component. But seems find nothing in the internet..


The first picture is a trafo with  6 pins, and the other is look like coil. Need help here

Thank you :)


-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Re: Component in schematic

qonita.salimah@...
 

Can you explain it more about hoe to modify the component?
Thank you


Re: Component in schematic

MVS Sarma
 

learn to modify and use 6 dil as a base and mark col symbols arounf it.

On 2 Mar 2018 17:49, <qonita.salimah@...> wrote:

Sorry, I'm try to search eagle library for this component. But seems find nothing in the internet..


The first picture is a trafo with  6 pins, and the other is look like coil. Need help here

Thank you :)



Component in schematic

qonita.salimah@...
 

Sorry, I'm try to search eagle library for this component. But seems find nothing in the internet..


The first picture is a trafo with  6 pins, and the other is look like coil. Need help here

Thank you :)


Re: Shipping notification

 

My ordered 24/12/17. , Get shipment notification 19/2/18  and later 2 weeks received the package today. with India post to Thailand

On Fri, Mar 2, 2018 at 7:40 AM, <vk7hch@...> wrote:
And on the 2nd of March, I have it in my hand. Ridiculous isn't it, 2 weeks for an eBay item from the next state, 4 days for an item from India!
Now the much anticipated fun begins!



Re: B40 LM386 and µB TDA2822 and that 470µF Cap

David Wilcox <Djwilcox01@...>
 

I know that we get away with plugging and unplugging things hot on most of our radios but as for me I will turn off the radio before making any changes. Any thoughts on that?

Dave K8WPE

On Mar 1, 2018, at 10:49 PM, Tim Gorman <tgorman2@cox.net> wrote:

If you insert a mono plug into a TRS jack the ring terminal of the
jack is almost always shorted to ground (i.e. the sleeve). If you wire
the output of the 2822 to both the tip and ring terminals and then
insert a mono plug there simply isn't any doubt that you are probably
going to short the output of the 2822 to ground. Bad things will
happen.

There is no reason to wire the output of the 2822 to both the tip and
the ring terminals. If you have a stereo headset then wire both headset
leads to tip of the plug and only wire up the tip lead on the socket.
Then if someone inadvertently plugs in a mono plug you won't short the
output of the 2822 to ground.

I agree that the large charging current going into the 470uf cap could
stress the 2822, perhaps only causing a failure after a number of
on/off cycles. That's something that would be hard to diagnose!

I have modified my schematic to show using a 47uf cap being fed with a
1 amp fuse from the 2822. If I ever get a chance to actually finish up
my ubitx it will be interesting to see if the 1 amp fuse is sufficient.

tim ab0wr

On Thu, 01 Mar 2018 15:39:50 -0800
"Jerry Gaffke via Groups.Io" <jgaffke=yahoo.com@groups.io> wrote:

And subsequent replies have suggested this may not be sufficient.

Some seem to fry when plugging something into the headphone jack even
if there is no short to ground involved. Or when powering up the rig.
Our best guess now is that there are significant currents involved
when that 470uF cap suddenly has to charge up to Vcc/2 And that some
clone TDA2822's may be weaker than mainline manufacturers.

On Thu, Mar 1, 2018 at 03:31 pm, Christopher Miller wrote:


One of the first replies suggested not wiring the ring, and using a
mono to stereo adapter cable if stereo headphones are required.