Date   
Re: uBitx Software Update

Tom, wb6b
 

The CAT control is limited to basic control of the radio like frequency, modes and keying the transmitter on and off. Audio needs sound cards; USB or other types. That is why the audio has to be sent to/from the uBITX from the microphone and audio volume control tap or the speaker output to/from sound cards.

If a digital mode is incorporated into the uBITX firmware then the text data might be able to be sent over the USB cable, but I din't know if there is any established standard for doing that.

The CEC firmware has/had a stand alone WSPR mode built in.

Tom, wb6b

Re: uBitx Software Update

YO8UFO
 

But why we have to connect also the microphone line of the uBitx to the computer line out? The computer is not communicating already with uBitx through USB ? If for example I want to use CW mode on Fldigi, the software generated code is sent to uBitx through the mic line, or USB ??!

9H4N, Paul Gauci #radiuno #arduino #ubitx-help #ubitx

Jim Sheldon
 

Open Letter to Paul Gauci, 9H4N.

Paul,
You have emailed me several times requesting information and pricing on the TSW Raduino Clone.  I have replied to every email you sent but you keep requesting information.

Please, If you see this, I am not ignoring you, you are obviously not receiving emails from me.  Reply to this thread if you see it.

Jim Sheldon, W0EB

Re: Reverse Polarity Protection

Lee
 

What I use is on page 2 left side is the single rectifier in series.   Nothing to sacrifice, will not blow fuses, lowest cost, and the .6 volt drop is not noticeable and may help those with the old audio amp and keep it from prematurely dying.
--
Lee - N9LO  "I Void Warranties"

 

Re: Reverse Polarity Protection

John McClun
 

Tim-

An 18V zener is perfect in this situation.  Sacrifice an 18V zener rather than many more expensive IC's, etc.  Live and learn.
--
John
NQ3RP

Re: Reverse Polarity Protection

Michael Monteith
 

 I think I posted similar earlier.  Looks like a solid build.  I plan to incorporate that circuit probably along with a electronic fuse.   I forget the name of them.

73, KM4OLT
Michael

Re: Reverse Polarity Protection

F1BFU - Fr - 79
 

Hi all

There are also kits KC9ON to mount or already assembled in traditional components or SMD.

73 QRO
Gilles - F1BFU /FR


Le jeu. 4 oct. 2018 à 02:22, John McClun <john@...> a écrit :
This PDF file is from the the GQRP group and offers several reverse polarity protection circuits.  All are simple and low parts count.

Reverse Polarity Protection.

-- 
John
NQ3RP



--
Gilles - F1BFU/FR

Re: VK4PP uBitx scratch built.

Nick VK4PP
 

Yes.

Re: Reverse Polarity Protection

Timothy Fidler
 

the 18 V zener diode is near useless in current format if you were to put 24 V across the circuit  with correct polarity

Re: VK4PP uBitx scratch built.

Dr. Flywheel
 

Thanks Nick. Am I making the correct assumption that these boards have a continuous ground plane on the other side?

--Ron    N7FTZ

On Wed, Oct 3, 2018 at 8:44 PM Nick VK4PP <nickpullen@...> wrote:
Sure thing: https://easyeda.com/nikpolini/Dot-PCB

Most of my projects are there, feel free to copy and do whatever...

73. Nick.

Re: VK4PP uBitx scratch built.

Nick VK4PP
 

Sure thing: https://easyeda.com/nikpolini/Dot-PCB

Most of my projects are there, feel free to copy and do whatever...

73. Nick.

Re: VK4PP uBitx scratch built.

Dr. Flywheel
 

Great job Nick!

Very nice and handy concept for RF prototyping. Do you mind sharing the Gerber files and tell us where we could order such boards at a good price?

73's
--Ron    N7FTZ

On Wed, Oct 3, 2018 at 1:57 PM Nick VK4PP <nickpullen@...> wrote:
Hi Skip
1206 should work fine I hope.
The pads are 2.54mm appart, so standard proto board, just no holes.

73.

Re: Remote Encoder and Function Button #ubitx

Tom, wb6b
 

Hi,

I control my uBITX with CAT from a RaspberryPi. To eliminate the noise I wrap the USB cable (as well as some others) several turns through a toroid core.
http://palomar-engineers.com/rfi-kits/miscellaneous-rfi-solutions/wall-wart-rfi-filter-kit/Wall-Wart-RFI-Noise-Filter-Pack-5-filters-p76744732

Don't know what the actual ferrite material type is, but probably is mix 75 or 77.

Also, I installed my RPi into a metal case.
https://www.amazon.com/gp/product/B0755S5J3G

There are libraries to control the GPIO ports on the RPi. There is at least one for Python and there is an interesting one that is similar to the Wire library for the Arduino. http://wiringpi.com

You could write code to output emulated quadrature encoder square waves and feed them to the Arduino from the Pi instead of the physical rotary encoder. That may be more than you are intending to do. But, if you are into software hacking it could be a solution.

Tom, wb6b

Remote Encoder and Function Button #ubitx

El Calvo
 

Hi to all!!!

I'm would like to install my ubitx at the top of a mountain next to my house.  For this I used to Raspberry Pi's. The two way audio and ptt is done by Remotetrx from SM0SVX.  The serial comms for the Nextion is done by Ser2Net and socat, using the pi's own serial ports.

Frequency change can be done using the Nextion display but is a little difficult.  That is why I would like to add an Encoder and the function button. Also if possible the cw key.  

On my first setup, using this 2way audio setup and rigctld, I could control the radio using cat. But for some reason my USB cable when connected makes a lot of noise.  Besides using the rpi and nextion with a usb battery bank last for many hours.  

The question is how to add the encoder and buttons to this setup.  If possible without modifying the Nextion and ubitx code.  This way I can take advantage of future updates. 

All ideas are welcome!!!!

Thanks, WP3DN Juan Agrinsoni

Reverse Polarity Protection

John McClun
 

This PDF file is from the the GQRP group and offers several reverse polarity protection circuits.  All are simple and low parts count.

Reverse Polarity Protection.

-- 
John
NQ3RP

thank you

john
 

Thank you for adding me.
john kd8paf

Re: VK4PP uBitx scratch built.

Nick VK4PP
 

Hi Skip
1206 should work fine I hope.
The pads are 2.54mm appart, so standard proto board, just no holes.

73.

Re: uBitx Software Update

Jens <hb9joi@...>
 

Hello ...
 
I am new with mBITX . Just got it yesterday and now already built in enclosure
and it runs good .
The firmware is the original from HFSIGNALS .
 
But something makes me not happy : the frequency tuning steps are to large , 100 Hz .
Which other firmware I could install and use with tuning steps , maybe 10 Hz ???
And how is the way to install another firmware without risk that the radio will then not more work ... ?
 
I have found something from KD8CEC , but for me as beginner it seems to be very complicate ...
to make an firmware update ... I need help , please !
 
73 , Jens / HB9JOI
 
+++
 
 
 

From: Rick Price
Sent: Wednesday, October 3, 2018 7:23 PM
To: BITX20@groups.io
Subject: Re: [BITX20] uBitx Software Update
 
Yes, just like your uploading new software to the nano.  Set the parameters in WSJTX for Yaseau 817 correct com port and baud rate, use Cat for control.  Works great! FlDigi the same, just set the parameters correctly and Cat will work.  Of course you need to hook up the audio out from your computer to the mike in on the uBitx and make sure you do not connect the ring PTT wire at the uBitx.  Just the tip and sleeve.  I use my speaker out on the ubitx into the line in on the computer.  The slider on the right side of WSJTX can be used to control the audio  level out of the computer (modulation level) into the ubitx.  I use the volume on the ubitx to control the audio level into WSJTX and keep the level bar in the green. I have made a couple of hundred contacts including DX to Europe and S America.  Lots of fun on this little box.
 
Rick
KN4AIE
 

From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Daniel
Sent: Wednesday, October 03, 2018 12:57 PM
To: BITX20@groups.io
Subject: Re: [BITX20] uBitx Software Update

Oh, really ? I just connect the USB to the computer and I can establish a communication through the COM port?

Re: bitx40 Q14 question about collector voltage

Stephan
 

oh well... R144 is 2.2ohm and not 2.2k... (:

sorry.

Am 03.10.2018 um 19:56 schrieb Stephan Lauffer:

Hi!
In different papers I read that the collector voltage on Q14 is round about PWR voltage -0.5V.
But if I read the circuit I don't see where this high voltage should come from. R144 has 2.2k and then there are R143 1K + R142 100K. So imho the collector should have round about 4V and round about 8V is on R144.
Am I wrong?
--
Liebe Gruesse, with best regards,
Stephan Lauffer
dc8lz

bitx40 Q14 question about collector voltage

Stephan
 

Hi!

In different papers I read that the collector voltage on Q14 is round about PWR voltage -0.5V.

But if I read the circuit I don't see where this high voltage should come from. R144 has 2.2k and then there are R143 1K + R142 100K. So imho the collector should have round about 4V and round about 8V is on R144.

Am I wrong?

--
Liebe Gruesse, with best regards,
Stephan Lauffer
dc8lz