Date   
Re: New wiring diagram version

Adrien F4IJA <adrien.grelet@...>
 

Jerry : that's OK, I've figured out why there is 2 power slots.

I've asked here another question though : https://groups.io/g/BITX20/topic/max_pa_pwr_voltage/33139548?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,33139548
--
73's
Adrien F4IJA
https://www.qrz.com/db/F4IJA

max PA PWR voltage ?

Adrien F4IJA <adrien.grelet@...>
 

Hello,

What is the max PA PWR that can be supplied to the ubitx ? Also, what is the output power benefit to have more voltage on the finals of the PA PWR ?

Thank you,
--
73's
Adrien F4IJA
https://www.qrz.com/db/F4IJA

Re: New wiring diagram version

Adrien F4IJA <adrien.grelet@...>
 

Thank you Jerry,

For now I've just reworked the drawings, based on the old one. It's better quality and very good to print.

I've some questions on my side too :

What is really the difference beetween PA PWR and +12V ?

Isn't it more simple to enpower just by the Alternate power  with a switch, connected both on PA PWR and +12V all the time, even though you power the ubitx with battery or with DC supply ?
--
73's
Adrien F4IJA
https://www.qrz.com/db/F4IJA

Re: BITX shoes?

 

Hi,

This one looks like it has no low pass filters installed, thus it would be illegal to use in most countries unless band-specific low pass filters were used between the amp and antenna.

73,


Mark.

Re: Builder for Disabled

Curt
 

Eric

Wonderful offer. I don't know Thom but remember him from qrp-l. In my judgment a small team of builders can take turns working on his rig, in parallel with your own rigs.

Important is to find out what kind of enclosure he has, but even the standard supplied wiring is good. I see his email is on qrz.com. email him personally to see if he can drive, or whether you need to pick up his rig.

Your timing seems better, as we already finished much of our build here in Carroll County, more than 2 dozen rigs. Check out our K3PZN ubitx page for some good info.

Curt WB8YYY

Re: New wiring diagram version

Jerry Gaffke
 

Good to have an alternate drawing of how to wire up a uBitx.
We often have questions here from puzzled kit builders.

However,

The 2 reverse protection diodes should be after the fuses, not before, so the fuses
will blow if the diodes conduct.  Those diodes might conduct the full current of
a small supply, in which case it could work as is.  (Though they should be Schottky diodes.)
They could fail with a short at high currents, which is also ok.  Or they could blow
molten silicon across the room and be open when you plug in your 20 Amp power
supply backwards, in which case you will destroy many parts on your uBitx.

I would instead add a schottky diode (lower forward voltage drop than a 1n4007)
in series with the fuse for the main supply into the uBitx.  We can afford to lose 0.3 volts there.

No real need for reverse protection on PA-PWR, as the IRF510's have their own intrinsic
reverse diode.  You might burn a board trace or coil between the PA-PWR connector and IRF510,
this would be easy to fix.  But reversing the main 12V into the uBitx will blow 
a bunch of stuff (including everything on the Raduino), and be very difficult to repair.

The fuse for the main supply into the uBitx should be 1 Amp, perhaps even 1/2 Amp.
But definitely not 5 Amps.  2 Amps could be about right for the PA PWR, maybe 3
if feeding it 20V.

Opinions will vary, we've had long discussions here about reverse protection.
But I doubt many will say this drawing is correct.
I have not looked hard at it beyond the power supply connections.

Jerry


On Wed, Sep 4, 2019 at 05:27 AM, Adrien F4IJA wrote:
Hi everyone !

OK, you'll now find the new version of the wiring diagram in the wiki : https://groups.io/g/BITX20/wiki/uBITX-Assembly

You will now be able to download an HD PDF and also, in the CAD folder you will find the SVG source file : https://groups.io/g/BITX20/files/uBITX%20CAD%20Drawings
--
73's
Adrien F4IJA
https://www.qrz.com/db/F4IJA

Re: BITX shoes?

Sajid Rahum
 

I ordered RMItaly KL203 and will give it a short to work with ubitx once it arrives here.

Re: New wiring diagram version

Adrien F4IJA <adrien.grelet@...>
 

Hi everyone !

OK, you'll now find the new version of the wiring diagram in the wiki : https://groups.io/g/BITX20/wiki/uBITX-Assembly

You will now be able to download an HD PDF and also, in the CAD folder you will find the SVG source file : https://groups.io/g/BITX20/files/uBITX%20CAD%20Drawings
--
73's
Adrien F4IJA
https://www.qrz.com/db/F4IJA

Re: UBitx v5 Not Saving Calibration or BFO adjustments with CEC v 1.20 Nextion

Gary Anderson
 

On Tue, Sep 3, 2019 at 01:44 AM, Ian Reeve wrote:
I am sure you single push the encoder and not put to save settings
A quick look at the CEC 1.20 firmware!

code Snippet from void menuSetupCalibration:
//save the setting
  if (digitalRead(PTT) == LOW){
    printLineF1(F("Calibration set!"));
    printLineF2(F("Set Carrier now"));
    EEPROM.put(MASTER_CAL, calibration);
    delay_background(2000, 0);
  }

Mark, are you seeing the text in the above printLines after you push PTT? (I think I'm in the correct place in the code)
You may want to try holding the PTT button down for a longer duration.
PTT is used as one way to break out of a while() loop, and it is re-read later in the code to 'save the setting'
(pushing the encoder 'function' button is the other way to break out of the while() loop, when you DON'T want to 'save the setting')
Potential of a glitch the way the code is written for a short push of PTT, but just think "hold PTT until I see 'Calibration Set'" or the corresponding message  for any of the menus.

I haven't tested the code, just looked over it. Easy code patch to propose to Ian, if issue solved by a longer hold on PTT.

Regards,
Gary




Re: BitX40

Vaughn
 

Hi, is the same only the one in my instructions is turned 180 and has another board on top. All connections go to that one not the display one.

Got mine from hf signals. Good set of parts and lots of help.

Hope you get it sorted Vaughn

the mighty uBITX wispers loudly (as in WSPR digital mode) in 4th place for 2 way spot reports #antennas #cat

Don - KM4UDX
 

We all love our uBITX.  Did you know the uBITX makes a wicked good digital mode beacon station using WSJT-X's cool beacon mode called WSPR? Well it does.  We have a uBITX tied for 4th place in world-wide 2 way spot reports.  Note that the other folks in the top seed have expensive professional gear and full power. Our uBITX is running with the bulls and keeping pace with only moderate/QRP power.

Sterling performance credit goes to the CEC-based CAT control, WSJT-X's ability to direct band hops, and the generally excelent TX and RX performance of the uBITX design. On RX in particular, the uBITX has proven to be a world class receiver of digital modes -- the rig has very good ears and audio circuits. 

Here are the top 10 in deceding order of 2 way spot reports. The mightly uBITX is in 4th place (km4udx).  The number of 2 way reports per band is shown next.  Clearly the uBITX will work on more bands, but my antenna is the limiting factor.  For example, last month I worked 160 with my 80-10 DIY OCFD.  While the SWR was about >34,857, I kept the power down to 1 watt, and got a handfull of 2 way spot reports at medium distance. So 160m with no low pass band filter and no real antenna is no reason not to communicate. hahah. 

All hail the mighty wispering band hopping uBITX!


Yes I have cherry picked the data, but I get to do that. hahah

Don
km4udx

Re: BitX40

Jerry Gaffke
 

The 8 pin connector plugs into the top of the Raduino as shown here:
    http://www.hfsignals.com/index.php/2017/11/23/wiring-up-the-bitx40/
and the green,purple,yellow wires from that connector are soldered to the tuning pot.

Make sure all the spare wires from that 8 pin connector have tape over the ends.
There have been several instances here where a Nano on the Raduino was destroyed
when one of those wire ends hit something with 12v on it, perhaps the IRF510 heatsink.

Jerry


On Tue, Sep 3, 2019 at 04:03 PM, Roger Tuffin wrote:
Sorry Jerry.  Looking at the schematic I meant tuning not volume.  Where do a connect the tuning pot on my board as I only have the 8 way connector other than the pins some of which I’m using for the 5 way connector?
 
Roger, M0TJK

Re: BitX40

Roger Tuffin <roger.tuffin@...>
 

Sorry Jerry.  Looking at the schematic I meant tuning not volume.  Where do a connect the tuning pot on my board as I only have the 8 way connector other than the pins some of which I’m using for the 5 way connector?

Roger, M0TJK


On 3 Sep 2019, at 11:29 pm, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:

The yellow wire goes to the pin at the end of the connector.
Pauls photo agrees with the "wiring up" drawing here:
    http://www.hfsignals.com/index.php/2017/11/23/wiring-up-the-bitx40/
except that Paul is showing the backside of the board.

Note that the other end of the yellow wire goes nowhere at all.
But it has 12v on it, so I suggest you put a piece of tape over the end.
If that end brushes over the wrong spot, you can blow a part (or even many parts).
I suggest you put tape over the end of all unused wires.

The volume control is shown in that "wiring up" diagram linked to above,
the text has been clipped of to read "UME" instead of "VOLUME"

The Bitx40 schematic is here:
    http://www.hfsignals.com/index.php/2017/11/23/bitx40-circuit-description/
Under the schematic is a link to get a downloadable copy of the schematic,
unfortunately that link is open.

Yes, I agree.
The instructions on the website should be better, the website needs editing.
But you will have a working rig once you figure out those dozen or so wires,
and that is much easier than building most SSB Transceiver kits.

Jerry, KE7ER


On Tue, Sep 3, 2019 at 02:59 PM, Roger Tuffin wrote:
Thanks for that.  So does the yellow wire go into the pin nearest the 575 handwritten on my board?  Only your board looks different to mine.  Also, what happens about connecting the volume control shown in the diagram.  I suppose with a circuit diagram I could trace what’s where, but I’m rather cross that they can’t be bothered to post the pinouts on the web site.
 
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Re: BitX40

Roger Tuffin <roger.tuffin@...>
 

Thank you Jerry.  I will take a look tomorrow.  

73

Roger, M0TJK


On 3 Sep 2019, at 11:29 pm, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:

The yellow wire goes to the pin at the end of the connector.
Pauls photo agrees with the "wiring up" drawing here:
    http://www.hfsignals.com/index.php/2017/11/23/wiring-up-the-bitx40/
except that Paul is showing the backside of the board.

Note that the other end of the yellow wire goes nowhere at all.
But it has 12v on it, so I suggest you put a piece of tape over the end.
If that end brushes over the wrong spot, you can blow a part (or even many parts).
I suggest you put tape over the end of all unused wires.

The volume control is shown in that "wiring up" diagram linked to above,
the text has been clipped of to read "UME" instead of "VOLUME"

The Bitx40 schematic is here:
    http://www.hfsignals.com/index.php/2017/11/23/bitx40-circuit-description/
Under the schematic is a link to get a downloadable copy of the schematic,
unfortunately that link is open.

Yes, I agree.
The instructions on the website should be better, the website needs editing.
But you will have a working rig once you figure out those dozen or so wires,
and that is much easier than building most SSB Transceiver kits.

Jerry, KE7ER


On Tue, Sep 3, 2019 at 02:59 PM, Roger Tuffin wrote:
Thanks for that.  So does the yellow wire go into the pin nearest the 575 handwritten on my board?  Only your board looks different to mine.  Also, what happens about connecting the volume control shown in the diagram.  I suppose with a circuit diagram I could trace what’s where, but I’m rather cross that they can’t be bothered to post the pinouts on the web site.
 

Re: BitX40

Jerry Gaffke
 

The yellow wire goes to the pin at the end of the connector.
Pauls photo agrees with the "wiring up" drawing here:
    http://www.hfsignals.com/index.php/2017/11/23/wiring-up-the-bitx40/
except that Paul is showing the backside of the board.

Note that the other end of the yellow wire goes nowhere at all.
But it has 12v on it, so I suggest you put a piece of tape over the end.
If that end brushes over the wrong spot, you can blow a part (or even many parts).
I suggest you put tape over the end of all unused wires.

The volume control is shown in that "wiring up" diagram linked to above,
the text has been clipped of to read "UME" instead of "VOLUME"

The Bitx40 schematic is here:
    http://www.hfsignals.com/index.php/2017/11/23/bitx40-circuit-description/
Under the schematic is a link to get a downloadable copy of the schematic,
unfortunately that link is open.

Yes, I agree.
The instructions on the website should be better, the website needs editing.
But you will have a working rig once you figure out those dozen or so wires,
and that is much easier than building most SSB Transceiver kits.

Jerry, KE7ER


On Tue, Sep 3, 2019 at 02:59 PM, Roger Tuffin wrote:
Thanks for that.  So does the yellow wire go into the pin nearest the 575 handwritten on my board?  Only your board looks different to mine.  Also, what happens about connecting the volume control shown in the diagram.  I suppose with a circuit diagram I could trace what’s where, but I’m rather cross that they can’t be bothered to post the pinouts on the web site.
 

Re: BitX40

Roger Tuffin <roger.tuffin@...>
 

Hi Paul

Thanks for that.  So does the yellow wire go into the pin nearest the 575 handwritten on my board?  Only your board looks different to mine.  Also, what happens about connecting the volume control shown in the diagram.  I suppose with a circuit diagram I could trace what’s where, but I’m rather cross that they can’t be bothered to post the pinouts on the web site.

Roger, M0TJK

On 3 Sep 2019, at 7:21 pm, Paul KL7FLR <paulf657@...> wrote:

Roger, the Raduino connections are confusing but all is necessary is to plug the 5wire connector as show is the attach. Actually the extra connections will be useful for future mods. Works okay
Regards,
Paul <Raduino 5 pin plug.jpg>

Re: Builder for Disabled

Eric Berman
 

Thom

I am with the Anne Arundel Radio Club and there are a few of us that are building the uBITx and the Jack AL board. If you would  like to join us please let me know. I am sure we could help you with the build.  

73

Eric 
KC3GDV


On Mon, Sep 2, 2019 at 11:59 AM Thom LaCosta <tlchost@...> wrote:
Are there any folks who build fir or willing to build for a disabled ham?  I have tremor which makes wielding a soldering tool and envornmental hazard.

thanks
thom k3hrn

Re: UBitx v5 Not Saving Calibration or BFO adjustments with CEC v 1.20 Nextion

markix88@...
 

Can you explain? I tried with once push of the encoder but nothing changed

Re: BitX40

Paul KL7FLR
 

Roger, the Raduino connections are confusing but all is necessary is to plug the 5wire connector as show is the attach. Actually the extra connections will be useful for future mods. Works okay
Regards,
Paul

Re: BitX40

Jerry Gaffke
 

Roger,


All Raduino's are now built to be plugged into a uBitx, all that has changed is the connector.
(But note that the firmware loaded into the Raduino is different between Bitrx40 and uBitx.)
The 5 pin cable from a Bitx40 does work, just plug it into one side of the Raduino connector
as described in the above post.

Yes, this should be better documented up on hfsignals.com.
But they may feel that the diagram at the top of  http://www.hfsignals.com/index.php/2017/11/23/wiring-up-the-bitx40/
is sufficient for most to blunder their way through somehow.
It does show which 5 pins your cable should connect to, and the orientation.

This is further described in post   https://groups.io/g/BITX20/message/66263

Jerry, KE7ER


On Tue, Sep 3, 2019 at 09:29 AM, Roger Tuffin wrote:
bought a BitX40 last week. Checking the contents on arrival, there is a 5 way connector which is supposed to plug in to a 5 way connector on the Raduino board. Except there is no 5 way connector on the board. I have emailed the firm querying how I am supposed to connect this but have not even received a bare acknowledgement of my email.