I believe most of them use TORX (also known as Star or Spline ) screwheads. ?Probably T-8 or T-10 size if I remember right.
Jim - W0EB
------ Original Message ------
Sent: 7/20/2018 9:11:56 AM
Subject: Re: [BITX20] calibrate v4 ubitx
Jerry,
I agree that calibration is a 'exercise', why does it need to be this hard. I'm no coder, but Don ND6T's calibration routine worked really good for me when I was calibrating my Bitx 60, ? All we need to know is what our actual 25Mhz crystal frequency is and change that line in the sketch, then all we need to adjust is the BFO frequency which is easy when the rig is on frequency. I don't know how to code so I'm not sure what is involved in adding something like this to the existing sketch but it sure beats zero beating.
Joel
N6ALT
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Re: I think this will work for the Ubitx...microphone
Hi Kevin,
What tool removes the screws holding the Baofeng microphone together? My small Phillips screwdriver doesn't work on it.?
Thanks, George, k1DX
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The USB input to the raduino is particularly vulnerable. ?Ferrites there are a good idea, and also use a one to one current balance on your antenna cable. ?
The cause is unbalanced feedline currents looking for an RF connection. ??
On Jul 20, 2018, at 10:28, R. E. Klaus via Groups.Io < reklaus@...> wrote:
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I had the same issue with my Yeasu when I first started using Fldigi. I put snap on Ferrites on the audio leads and wound the control cable about 6 turns around a ferrite toroid and that solved the issue for me.
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I had the same issue with my Yeasu when I first started using Fldigi. I put snap on Ferrites on the audio leads and wound the control cable about 6 turns around a ferrite toroid and that solved the issue for me.
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Re: Animated GIF of BITX17 scratch build
Bill,
That makes me car sick if I keep watching it:-) It is cool though. I made my best QRP DX contact with a Hendricks Bitx17. From S. Oregon to Antarctica
Joel
N6ALT
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Re: uBITX adjustable power supply?
Maximum available output current will fall drastically as the output to input voltage ratio rises.
You might get 4A out if the input voltage were about equal to the output voltage,
it falls off from there as you ask for higher output voltages.
Also, as that voltage ratio rises, the output current gets much choppier and noisier,
demanding more from the inductor and diode and output filter cap for acceptable results.
These things can work, but as you have found the spec's they give are "optimistic" at best.
Here's a tutorial on boost converters:
? ??
And a datasheet for the chip used:
? ??
Note that pin 2 of the chip is an ENABLE pin, could pull that low during receive.
Most of these modules don't give you an explicit connection on the board to shut it down,
but if you study the data sheet of the part used it is often possible.
Using two modules, one for each FET as you suggest, should work on the uBitx.
Though that means two spots to adjust output voltage, and twice the number of places it can fail.
A single large boost switcher might be better.
Jerry, KE7ER
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On Fri, Jul 20, 2018 at 01:28 AM, Tom, wb6b wrote:
My apologies for the stream of consciousness nature of these last few posts. But, if it turns out one of the power converters can't handle the load, I realized the uBITX does not use a center tapped output transformer. I might try supplying each half of the push-pull finals with a separate boost converter.
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Jerry,
I agree that calibration is a 'exercise', why does it need to be this hard. I'm no coder, but Don ND6T's calibration routine worked really good for me when I was calibrating my Bitx 60, ? All we need to know is what our actual 25Mhz crystal frequency is and change that line in the sketch, then all we need to adjust is the BFO frequency which is easy when the rig is on frequency. I don't know how to code so I'm not sure what is involved in adding something like this to the existing sketch but it sure beats zero beating.
Joel
N6ALT
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Hi John,
I assume that you are using a computer connected to the radio since you are running WSJT-X AND CAT. It may be the computer that is being tickled by stray RF.
How is your RF ground configured? The shrortest cable possible to a good earth ground is desirable but may have a length that presents a high impedance to ground for RF at one or more bands. Before you put a lot of effort into that (assuming you already have some sort of grounded cable) try to connect your computer 'common' to the same RF ground you use for your radio. At least bond the radio chasis ground and computer ground. If I don't have that RF ground included on the computer frame I have some nasties that show up too.
The suggestions in the other replies this far are good too.
73,
Bill KU8H
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On 07/20/2018 08:24 AM, John wrote: Hello all,
I just put my antenna in a u-shape in the attic and have a better swr
now so I was able to try the uBitX on 40m for the first time.
What I experience only on 40m is that while using WSJT-X my uBitX locks
up and gets stuck on TX. All the shorter bands (30/20/17/15/12 and 10)
don't cause this issue.
Running CEC firmware v1.095 with Nextion 2.4 display.
When the lock up happens I get the warning message "RIG Control Error,
Do you want to reconfigure the radio interface" and when I look on the
uBitX the TX symbol is lit.
I don't have any chokes on my audio cables and have been working on the
higher bands without any problems.
Any clues?
John
--
bark less - wag more
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Re: KD6CEC code and Nextion displays, tuning skips steps
#radiuno
#ubitx
I have noticed this as well. For example when you set the step size to 50 Hz if you tune quite quickly it seems that the step-size
increases.?
Are you sure that this isn't intentional ? ?I see to recall Ian making a passing comment about variable rate tuning at some point.
Michael VE3WMB
P.S. I am really enjoying the ability to select the step size via touch screen in V2 of Ian's "Nextion" display code. This was a great addition.
I may have found another bug though. More on this later when I have had more of a chance to test it out.?
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Radio interference! Happens on whatever bands you get currents through sensitive junctions.?
Experiment try to fix it, add grounds, single point ground, try ferrites lots of different places, eventually you will stop the current that is locking up the rig.
On Jul 20, 2018, at 08:24, John < jjczon@...> wrote:
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Show quoted text
Hello all,
I just put my antenna in a u-shape in the attic and have a better swr now so I was able to try the uBitX on 40m for the first time.
What I experience only on 40m is that while using WSJT-X my uBitX locks up and gets stuck on TX. All the shorter bands (30/20/17/15/12 and 10) don't cause this issue.
Running CEC firmware v1.095 with Nextion 2.4 display.
When the lock up happens I get the warning message "RIG Control Error, Do you want to reconfigure the radio interface" and when I look on the uBitX the TX symbol is lit.
I don't have any chokes on my audio cables and have been working on the higher bands without any problems.
Any clues?
John
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I would suggest putting a clip on ferrite core on the USB cable, right at the Raduino connector and one on the wires from the Raduino connector going to the encoder. Others have brought this issue up and this was the easiest and quickest solution. 73s,
Marco - KG5PRT?
On Fri, Jul 20, 2018, 8:04 AM Marc Jones via Groups.Io <gw0wvl= [email protected]> wrote:
Sounds like a Bit of RF is getting in there ...
Gw0wvl On Fri, 20 Jul 2018 at 13:24, John Hello all,
I just put my antenna in a u-shape in the attic and have a better swr now so I was able to try the uBitX on 40m for the first time.
What I experience only on 40m is that while using WSJT-X my uBitX locks up and gets stuck on TX. All the shorter bands (30/20/17/15/12 and 10) don't cause this issue.
Running CEC firmware v1.095 with Nextion 2.4 display.
When the lock up happens I get the warning message "RIG Control Error, Do you want to reconfigure the radio interface" and when I look on the uBitX the TX symbol is lit.
I don't have any chokes on my audio cables and have been working on the higher bands without any problems.
Any clues?
John
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Sounds like a Bit of RF is getting in there ...
On Fri, 20 Jul 2018 at 13:24, John <jjczon@...> wrote: Hello all,
I just put my antenna in a u-shape in the attic and have a better swr now so I was able to try the uBitX on 40m for the first time.
What I experience only on 40m is that while using WSJT-X my uBitX locks up and gets stuck on TX. All the shorter bands (30/20/17/15/12 and 10) don't cause this issue.
Running CEC firmware v1.095 with Nextion 2.4 display.
When the lock up happens I get the warning message "RIG Control Error, Do you want to reconfigure the radio interface" and when I look on the uBitX the TX symbol is lit.
I don't have any chokes on my audio cables and have been working on the higher bands without any problems.
Any clues?
John
|
Hello all,
I just put my antenna in a u-shape in the attic and have a better swr now so I was able to try the uBitX on 40m for the first time.
What I experience only on 40m is that while using WSJT-X my uBitX locks up and gets stuck on TX. All the shorter bands (30/20/17/15/12 and 10) don't cause this issue.
Running CEC firmware v1.095 with Nextion 2.4 display.
When the lock up happens I get the warning message "RIG Control Error, Do you want to reconfigure the radio interface" and when I look on the uBitX the TX symbol is lit.
I don't have any chokes on my audio cables and have been working on the higher bands without any problems.
Any clues?
John
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Re: KD6CEC code and Nextion displays, tuning skips steps
#radiuno
#ubitx
I had an issue with encoders several years ago, in a PIC application.? I looked at the A/B outputs and noticed spikes on the square waves.? Adding two .001uF caps across the outputs to ground, cured the issue.? Maybe that will help?? Most likely you encoder is easy to get to...
Your mileage may vary,
Jim W0CHL
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Re: surprising CW sidetone value in uBITX Manager 0.11
#ubitx
Virgin EEPROM on the Arduino family is set to 0xFF. My guess is that some value the software needs from EEPROM has not been set.
Jack, W8TEE
On Thursday, July 19, 2018, 11:52:48 PM EDT, Mike KK7ER <groupio@...> wrote:
Alas, having the correct version of uBITX Manager did not solve the problem.? Now the CW Side Tone and CW Speed both show as 65535 (0xFFFF).? They are still just as meaningless as before and do not correspond to the values shown on the LCD display.
FYI.
73 Mike KK7ER
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Version 4 board installation is going well and thanks to K5BCQ for an excellent AGC board and SMT components.
However, I am not sure about mounting a remote gain control for this. I wonder what others have done?
Can you tell me what your experience has been connecting this board using the three header pins directly to the main board.
Where have you taken the 5v supply from and the gain control wires from. Have you found it necessary to use screened cable to the potentiometer?
Are you using the original 5K Pot or as shown on the circuit diagram a 1K Pot. Probably doesn't make a difference in this application.
Your findings are most welcome prior to cutting and drilling the board and adding a front panel gain control.
Best wishes Derek G4VWI.
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Re: (Some) Nextion Displays not working
Hi Glenn,
I am using the latest firmware for the Ubitx(nano), v1.095beta the NX and the NXU version.
Only my 2.8" works, not the 3.2" nor 4.3"? will work..
Cant figure out, why 2.8 works and my others wont.
--
73' Bj?rn de PD5DJ
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Bravo! An elegant solution!
I've been eying those feeds to the 1602 display. When the display is not being programmed (which is most of the time) they could be available for some things. -Don
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Has anybody with this combination of Raduino noticed that the Encoder skips steps when tuning up or down.? ie the tuning is not in the nominated 100Hz steps but often skips 200-300Hz or more, unless the encoder is tuned VERY, VERY slowly.
I have tried several Encoders, but with the same result.?? I "think" the Sketch uses polling to read the Encoder which may be the problem, but interested to hear if others have noticed this at all.
glenn vk3pe
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Re: K5BCQ click fix 2nd generation installed
#ubitx
Very well documented Patrick! The original C50 and C63 are not polarized. C250 is part of the sidetone filter and would not cause your problem, but C50 is certainly suspect. Try substituting something for C50. Anything from 0.1uF to 10 uF. If you use a polarized substitute put the positive side toward Q70 and R50.
Do you have any signal tracing equipment (tone, oscilloscope, outboard audio amp)? Those would be quite helpful at this point and would have saved you a lot of work. It appears that you have done everything properly but it is 3AM and I am not competent enough at this time to be sure. I'll keep studying your message. 73, Don
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Jim Sheldon
Joel Caulkins/N6ALT
Marc Jones
Don, ND6T