Re: New version of TFT Touchscreen based VFO-BFO for uBitx
Hi Kevin,
The VU2SPF solution uses the MCUfriend type low cost touch tft which plugs straight into the Mega 2650 rather than the serial Nextion display.
73
Bob GM4CID?
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Re: BITX QSO Afternoon/Evening, Sunday, August 26, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Perhaps a future schedule could include a CW/RTTY calling frequency so that Technician Class licensees can participate.
73 Mike KK7ER
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Re: New version of TFT Touchscreen based VFO-BFO for uBitx
hi,
Does this work with the Nextion Enhanced 3.2" screen ?
kevin rea
lancaster, calif.
k6rea
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BITX QSO Afternoon/Evening, Sunday, August 26, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
BITX QSO Afternoon/Evening, Sunday, August 26, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
Join us as we make contacts with our BitX-40s or uBitXs or anything else on 7.277 MHz in 40 meters!
This is a worldwide event for BitX40 (and other QRP)?stations starting at 3PM and 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
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On Thu, Aug 23, 2018 at 12:34 PM, Arvo W0VRA wrote:
Is there an easy way to check the IRF510 transistors?
They are not shorted drain to gate.
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Re: Nextion 3.2 for CEC 1.097
#ubitx
I see Darren, thank you very much for your quick reply.
I thought it was possible to scale as a whole at once for who knows to do mods.
Hope someone who has 3.5'' regular nextion display makes it...
Alper TA2FU
?
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Re: Thanks for the community and Mr. Bill Cromwell in particular...and check this 20m DX FT8 range
#ubitx-help
#ft8
Hi Don,
I am happy to hear about your success. It was a real challenge squeezing 1200 watts out of your MicroBitX <evil grin>.
73,
Bill KU8H
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On 08/23/2018 01:10 PM, Don - KM4UDX wrote: Many public thanks to Mr. Cromwell Ku8H for taking the time and effort
to fix my uBITX. He received it with no transmit, and sent it back to me
with full transmit glory.
As testimony, observe the pskreporter showing my uBITX FT8 TX received
in Norway (LA9KY) ~3,800 miles away.
All hale Cromwell!
Don
km4udx
_._,_._,_
--
bark less - wag more
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Re: Homebrew from scratch
#ubitx
What size is the PCB? Can't seem to get a quote without it... (Knocking my head against the wall...)
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Re: New stuff from W0EB/W2CTX/N5IB "Triumvirate Skonk Worx"
#ubitx
Thanks Ron,? We're not planning any DSP audio additions in the foreseeable future though. ?Jack Purdum, ?W8TEE has all that nicely implemented in his "Jackal" board and we don't want to butt competitive heads with his group. ?They should have their system available before too long, I'd hope. ?There's room for all of us and different niches to fill. ?
CEC's Nextion is OK but we didn't want to be tied to something that's only "Single Source" and also requires a connection to a computer and a "manager" program to be fully functional. ?That just doesn't allow for much innovation and progress,
Jim, W0EB
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On Aug 23, 2018, at 12:10 PM, Dr. Flywheel < Dr.Flywheel@...> wrote: Nice effort guys. This is going to be a valuable upgrade to my V4 uBitx. However, in the long run I would like to see a version of your board that includes a high bit-rate audio I2S CODEC, possibly the SG5000 (for compatibility with the Teensy audio library). This would serve as a building block for the implementation of more sophisticated DSP mechanisms. Such mechanisms will include: filtering and generation/recovery of SSB signals and other modulation schemes, speech processing and variable bandwidth control, on the ARM processor.? By utilizing the multiple DMA channels available on the Teensy uC, high performance real-time activities at low power are all possible.
Perhaps what I am envisioning is a departure from the uBitx basic architecture, since by resorting to DSP at audio frequencies, the whole 2nd. IF system and the Xtal filter may no longer be needed. However, if we take an evolutionary and open source approach to the art, there is no reason to be limited by the base architecture and as Frahan already expressed, open source is all about participation and contribution for moving the art forward.
--Ron? N7FTZ? On Thu, Aug 23, 2018 at 8:10 AM Jim Sheldon < w0eb@...> wrote: Those of you that already have or are interested in our BITeensio (Teensy 3.6 MPU) card for the uBITX take a look at the "TSW" website, and you will see a preview of some things to come.? The Color TFT display shown is NOT a Nextion as we abandoned attempts to use the Nextion display.? Unfortunately the Nextion and it's editor are "Single Source" meaning you can get it (mainly the editor as there are closes of the display) from only ONE place.? Not so with the ILI9341 based TFT Color Displays and also the larger RA8875 based displays for which a 5" one is the next project being worked on.
The finishing touches are being tweaked for the 2.8" version shown installed in one of my uBITX radios on the website.? A small wireless keyboard turns out to be a nice addition as you can control the radio completely from the KB and you have the added benefit of a built in Keyboard type CW keyer.? You can also use a plug-in USB keyboard as long as you don't use a lighted one as the lighted keyboards draw too much current from the Teensy's on-board USB hotst power supply./
Jim Sheldon, W0EB
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On Thu, Aug 23, 2018 at 12:23 PM, Arvo W0VRA wrote:
Uh oh, it looks like R261 and R262 got very hot.? I think I can check them with the DMM.
The resistors check fine. Is there an easy way to check the IRF510 transistors?
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Uh oh, it looks like R261 and R262 got very hot.? I think I can check them with the DMM.
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Added photo of 80 meter T9 monitor ..Tek 7l13 (1 Khz low frequency cutoff) and a photo taken of W7ZOI "wes-alizer" to show that you don't need big bux to see this stuff Jim  
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Re: New stuff from W0EB/W2CTX/N5IB "Triumvirate Skonk Worx"
#ubitx
Nice effort guys. This is going to be a valuable upgrade to my V4 uBitx. However, in the long run I would like to see a version of your board that includes a high bit-rate audio I2S CODEC, possibly the SG5000 (for compatibility with the Teensy audio library). This would serve as a building block for the implementation of more sophisticated DSP mechanisms. Such mechanisms will include: filtering and generation/recovery of SSB signals and other modulation schemes, speech processing and variable bandwidth control, on the ARM processor.? By utilizing the multiple DMA channels available on the Teensy uC, high performance real-time activities at low power are all possible.
Perhaps what I am envisioning is a departure from the uBitx basic architecture, since by resorting to DSP at audio frequencies, the whole 2nd. IF system and the Xtal filter may no longer be needed. However, if we take an evolutionary and open source approach to the art, there is no reason to be limited by the base architecture and as Frahan already expressed, open source is all about participation and contribution for moving the art forward.
--Ron? N7FTZ?
On Thu, Aug 23, 2018 at 8:10 AM Jim Sheldon < w0eb@...> wrote: Those of you that already have or are interested in our BITeensio (Teensy 3.6 MPU) card for the uBITX take a look at the "TSW" website, and you will see a preview of some things to come.? The Color TFT display shown is NOT a Nextion as we abandoned attempts to use the Nextion display.? Unfortunately the Nextion and it's editor are "Single Source" meaning you can get it (mainly the editor as there are closes of the display) from only ONE place.? Not so with the ILI9341 based TFT Color Displays and also the larger RA8875 based displays for which a 5" one is the next project being worked on.
The finishing touches are being tweaked for the 2.8" version shown installed in one of my uBITX radios on the website.? A small wireless keyboard turns out to be a nice addition as you can control the radio completely from the KB and you have the added benefit of a built in Keyboard type CW keyer.? You can also use a plug-in USB keyboard as long as you don't use a lighted one as the lighted keyboards draw too much current from the Teensy's on-board USB hotst power supply./
Jim Sheldon, W0EB
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Thanks for the community and Mr. Bill Cromwell in particular...and check this 20m DX FT8 range
#ubitx-help
#ft8
Many public thanks to Mr. Cromwell Ku8H for taking the time and effort to fix my uBITX. He received it with no transmit, and sent it back to me with full transmit glory. As testimony, observe the pskreporter showing my uBITX FT8 TX received in Norway (LA9KY) ~3,800 miles away. All hale Cromwell!?  Don km4udx
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Hi,
I have completed my planned modifications for my radio by taming that million decibel sidetone (with surgical implant) and have successfully installed the CEC software. I am getting the hoped for results. Thanks to KD8CEC for the effort he put in and to him and all the others with helpful comments on getting it all running. I found quite a few stumbling blocks getting, installing, and running all the pieces but at each step I just looked up what people have already posted about it and made it all the way to the end:)
I'll still be around to help in whatever small ways I can and watching the progress of the internal filter mods. When something usable comes along I will probably install it in my radio.
73,
Bill KU8H
--
bark less - wag more
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Updated the T9, T10, and T11 photos ...The SA used has a lower bandwidth of 10 Mhx, therefore the 80 meter and 40 meter results were misleading
Sorry for the confusion
Jim
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Lightning took out Q90 on my uBitx.? Also fried the switching power supply I was using.? Antenna is in the attic but Q90 still got zapped. Others have reported similar frying of Q90 due to lightning.
Didn't have a 2n3904 so replaced it with MMBT2222A.? Working OK now.
Mike
K5ESS
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Re: Wow... 15 volts in and a bunch out..
Hi Bo,
One definition of an expert is "a has been drip under pressure" (ex-spurt) - :)
About that notice of violation comment - I am not so sure about other countries but FCC is not going to send a team of commandos to your house and haul you away to a gulag in some remote desert. They are not going to confiscate your dog, your pickup truck, your family, and your morning coffee. They send you a letter that tells you what they 'heard on the air', and when. You have more than thirty seconds (is it thirty days?) to answer them in writing explaining what you think happened and more - what you are going to do to prevent it happening again. That seems pretty reasonable to me. There are a lot of acceptable things that could be in that explanation and remedy. They'll be happy. You may be in the market for a new radio or a repair to the "offending" gear.
As for me I already know I need to use an external filter until more elegant repairs can be made. If that is not good enough I will retire the uBitx to receive-only duties in the shack and some service on the workbench. Power amplifiers disabled (remember that funny little brown wire?) to assure no further incidents. So far we have no reports from the concentration camps of disasters befalling anybody using a uBitx :)
Relax and enjoy your life :)
73,
Bill KU8H
Old School Too
or maybe just *old*
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On 08/23/2018 10:57 AM, Bo Barry wrote: I guess I'm old school. Or one reluctant to complain.
If it's cheap and WORKS, DON'T 'FIX'IT! Period.
If it's expensive and has problems, RETURN it. Period.
If you like to modify it, have at it, AND DON'T COMPLAIN!
If you get a violation notice, get a new radio, don't complain.
I'm happily using one and just tinkering with another just to refresh my
memory from long ago when I was an 'expert' according to some.
Grateful to Farhan for this innovative toy radio (that is as sensitive
as my Icom 7300) and that I could afford TWO of them.
Note on the 15v mod. I've ordered a mean well supply adjustable from
13.8 to 15 for under $20. Stay tuned for a report.
--
bark less - wag more
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Re: boosting the power on 28 MHz
#ubitx
Ashhar..
Thank you for all you do. I believe in? line 5 of your instructions there is a typo.. "Replace 97", should be "Replace R97".
I have been keenly interested in "leveling the Transmitter output" across the bands, for appropriate reasons.
Because of component costs of surface mount components, I am expecting someone to put together a "kit of parts" for this mod. I may even contemplate this- HOWEVER - FIRST- I think a number of Beta testers need to shake this down on the air for a few months. I am prepping for a? 2000 mile car trip ahead of me in September. As we're at the bottom of the Sun spot cycle, things are going to get better all the time so this mod will be welcomed.
If there is an interest in a "mass purchase" of this mod, PLEASE do not clutter the FORUM- PRIVATE MAIL ME. include with or without a pair of RD16HHF...
I will form a list to advise everyone if we get enough interest OR if someone else wants to offer the mod Kit - everyone is welcome - ain't going to get rich.? Private Email me at am_fm_radio (at) yahoo (dot) come? - Place "uBITX XMIT mod kit" in the subject line.
73-
Larry W8LM
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Re: Wow... 15 volts in and a bunch out..
You're referring to the regulator on the Randuino? ?I'm considering adding a resistor to cool the 7805.?
Measure the voltage ACROSS the resistor and the input to the 7805 to ground and report back.
Surprised a 1/4w worked.
I guess this needs to be done for both versions, the one with the LCD display and without with the Nextion display.
Thanks Bo W4GHV?
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Arvo W0VRA
TA2FU
Jim Sheldon