Re: UBitx v5 Not Saving Calibration or BFO adjustments with CEC v 1.20 Nextion
Have you tried Memory Manager to see if anything changes?
I had problems at first because my changes didn't seem to take.
What I did:
Power off Ubitx and connect USB cable from Ubitx to PC
Start Memory Manager and press Connect to set communication with
Raduino
Press Read From Ubitx
Press Decode and make note of calibration values
Shutdown Memory Manager and disconnect USB from PC
Power on
Make calibration changes and press PTT for about 2s and Calibration
Set appears
Power down Ubitx and power on
Power down Ubitx and connect USB to PC
Start Memory Manager and again press Connect then Decode
Press? Read from Ubitx then press Decode
You should see your calibration values have changed
If values are not changing then there must be an issue with Nano I
would suspect.
Hope this helps.
Vince
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Thanks gary, yes i'ved tried to push ptt longer but nothing
changed...yes i see "calibration set! Etc" message...on power on
everything is lost...maybe a e2prom defect in the arduino??
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Running th efinal at high power with 100ma bias means that at 12V your heating
them at 1.2W no signal.? Bring that up to 24V and its 2.4W of heat.??
To run at higher voltages you need to insure the heatsinks and air circulation
are adequate.? ? Heat is a known killer.
However you will still be power limited as the drive level does not change with
increased voltage to the finals (separate power bus).? So the increase is notable
but not hugely greater.? HINT:? if you don't increase the power by a factor
of 4 the other guy will not have a clue (he will not hear it).
Allison
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Re: UBitx v5 Not Saving Calibration or BFO adjustments with CEC v 1.20 Nextion
Thanks gary, yes i'ved tried to push ptt longer but nothing changed...yes i see "calibration set! Etc" message...on power on everything is lost...maybe a e2prom defect in the arduino??
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Re: New wiring diagram version
On Wed, Sep 4, 2019 at 12:12, Mark - N7EKU <n7eku@...> wrote:
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Re: ?- How high SWR before smoke?
Hats off Allison for a nice treat in this poat . Messages are crisp and digestible. Many thanks
Regards
?vu3zmv
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Re: New wiring diagram version
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Re: New wiring diagram version
Jerry : that's OK, I've figured out why there is 2 power slots. I've asked here another question though :? /g/BITX20/topic/max_pa_pwr_voltage/33139548?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,33139548-- 73's Adrien F4IJA
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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
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Re: New wiring diagram version
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
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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.
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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
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Re: New wiring diagram version
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
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I ordered RMItaly KL203 and will give it a short to work with ubitx once it arrives here.
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Re: New wiring diagram version
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Re: UBitx v5 Not Saving Calibration or BFO adjustments with CEC v 1.20 Nextion
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
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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
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the mighty uBITX wispers loudly (as in WSPR digital mode) in 4th place for 2 way spot reports
#antennas
#cat
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
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The 8 pin connector plugs into the top of the Raduino as shown here:
? ??
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
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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?
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Roger, M0TJK
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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?
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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: ? ?? 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: ? ?? 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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