Date   

W0EB/W2CTX new firmware release for the "BITeensio" board #ubitx

Jim Sheldon
 

W0EB and W2CTX have just completed and released a powerful new set of firmware for our BITeensio card.  Details on the BITeensio and links to the firmware are on the website www.w0eb.com

Jim, W0EB

Release Announcement -

As of this morning, July 8, we have released a powerful new version of the firmware for our BITeensio card, V6.00R, that utilizes the Teensy 3.6's capability to utilize USB "Host" mode
and connect a standard USB ASCII keyboard (many wireless ones work too).  PJRC (the people that make the Teensy  www.pjrc.com ) offer a standard USB cable thatcan plug into the Teensy. (You do have to add a 5 pin header to the Teensy 3.6 board) on the same side, and just to the right of the USB "Micro B" connector into which you will be able to plug the standard USB 2.0 cable.  The red wire (+5V) must be plugged into the pin indicated by a white square in the outline on the Teensy 3.6.In this version, we have implemented a comprehensive command list that allows many of the standard "menu" commands, including the operating frequency, to be entered using the keyboard.  Also included is a brand new Keyboard CW keyer that uses most of the K1EL keyboard keyer's character/key mapping.  The V6.00R firmware is released as pre-compiled "HEX" files and placed in the appropriate directory of the "Files" link on the www.w0eb.com website.   We are not denying anyone that wants it the source code, but you will have to ask for it with the understanding that if you cannot compile it or if you modify it, you are on your own as we just don't have time to troubleshoot it for you.





Re: NEXTION UPDATES FOR 7 AND 5 INCH - --ADAPTED FOR KD8CEC VER 1.095

Art Olson
 

The itead (Nextion) web site has 3d files to fit each size — recessed. You can get them printed aT 3dhubs.com as well as other places

Art


On Jul 8, 2018, at 9:55 AM, Allen Merrell via Groups.Io <kn4ud@...> wrote:

Looking good Joe..
Dave, be careful on some of the bezel's, my 3.5E came with a bezel but it was just a simple cut out piece of lexan with no protection around it. Some of those out there are recessed for the Nextion to fit inside the bezel to me these are the better choice. Don't end up with a piece of junk lexan bezel like I did. Their are stl print files on the Nextion site.
kn4ud
--
Allen  Merrell


Re: New case for uBiTX #ubitx

 

I purchased an aluminum knob from Mouser (450-6008) and then drilled a depression (finger hole) into it with a 3/8" drill bit. The knob was expensive, because it's solid aluminum, but had enough weight to make tuning a pleasure.
Your mileage may vary,
Jim W0CHL


Re: DSA815-TG spectrum analyzer upgrade.

Don, ND6T
 

Thanks Glenn. It worked. I needed to put it on a thumb drive with no other files, though. Previous upgrades have been incompatible, this one is aces. 72, Don


Re: NEXTION UPDATES FOR 7 AND 5 INCH - --ADAPTED FOR KD8CEC VER 1.095

Allen Merrell
 

Looking good Joe..
Dave, be careful on some of the bezel's, my 3.5E came with a bezel but it was just a simple cut out piece of lexan with no protection around it. Some of those out there are recessed for the Nextion to fit inside the bezel to me these are the better choice. Don't end up with a piece of junk lexan bezel like I did. Their are stl print files on the Nextion site.
kn4ud
--
Allen  Merrell


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Allen Merrell
 

Enhanced has RTC on board.
--
Allen  Merrell


Re: Crystal CW filter with Version 4 uBITX boards? #ubitx

ajparent1/KB1GMX <kb1gmx@...>
 

The bits referred to used no transformers at the ens of the filters.

ubitx does.  The transformers convert impedances so what is the impedance of
the 12 mhz filter at 4.1mhz translated by a 4:1 transformer?  What can we assume?

Allison


Re: Crystal CW filter with Version 4 uBITX boards? #ubitx

ajparent1/KB1GMX <kb1gmx@...>
 

The use of diplexers (one at each end) was to separate RF path by frequency for the filters.
I would be concerned with one filter loading the other and increasing the insertion loss.

Mixer spurs were not a consideration for the filter issue.

Allison


Re: Crystal CW filter with Version 4 uBITX boards? #ubitx

Ashhar Farhan
 

Allison,
The diplexer would have been required of we were concerned with mixer spurs. However the 45 mhz filter narrows the signals reaching the filter. So, mixer troubles by way of spurs are not a major concern.
The second filter frequency should not be harmonically related to 12 mhz. 4.195 mhz is a good choice. I have tried that and it worked very well.
I will make another build and post the details. 
- f

On 8 Jul 2018 9:34 am, "Jerry Gaffke via Groups.Io" <jgaffke=yahoo.com@groups.io> wrote:
Exactly how do the transformers ruin this?
The uBitx transformers are broadband.

I was imagining somehow holding both filters to 200 ohms, using only one set of transformers. 
That might be tough to do and still get the desired filter characteristics.
Though a CW filter may not need such a flat top.

Might be possible to have two sets of transformers in parallel.
The transformers don't have a fixed impedance, they just establish an impedance ratio.
So a high impedance into the filter should mean much higher than 50 ohms into that transformer.
Though all sorts of ways for this to trash performance.

I'd be fine with pluggable filters.
But am curious where dual filters would fail.

As your 45mhz-DialFreq spur shows, things can quickly go south in unexpected ways.
Measurements are  useful.
Even if it seems to work.

Jerry 


 

On Sat, Jul 7, 2018 at 04:51 pm, ajparent1/KB1GMX wrote:
The big difference is the lack of transformers it actually helps for that.  That version of the
bitx runs the amp interfaces at 200ohms.  In that case the unusd filter is not likely to
look like a rf short.  I wonder if the ubitx can be talked into running without the
transformers for the filter.  Either an L-network or none at all.  It may impact the
filter bandwidth and shape factor some.  I may test that for a single filter.

It should work but the choice of filter frequencies needs a little consideration to
avoid bleed though and spurs.  Things like non harmonically related and not
too close to the same frequency.



Re: NEXTION UPDATES FOR 7 AND 5 INCH - --ADAPTED FOR KD8CEC VER 1.095

Dave Dixon
 

Hi guys,
              I am thinking of adding a 2.4 screen to my Mbitx where can I buy a bezel for it please.regards Dave.

On 7 July 2018 at 18:26, Joe <joeman2116@...> wrote:
I just finished upgrade the nextion displays  to reflect the new release of KD8CEC V 1.095
Still more work to be done but fully functional .... always...LOL
7 and 5 inch
The 3.2 and 3.5  are being worked on

See attached files





VE1BWV
Joe



Unbuilt MicroBitx Kit for sale

w2ttt <w2ttt@...>
 

Hi Folks!
I have an unbuilt MicroBitx Kit that is just not getting my attention and needs to be sold off.
$110 shipped CONUS.
PayPal to w2ttt@... or Postal Money Order or check.
73,
Gordon Beattie W2TTT
201.314.6964
W2TTT@...


Re: MIC pins for amateurradiokits.in case

John Sharpe
 

That FB picture shows the amateurradiokits Front Panel Board. I don't have this board so my microphone wires come from the Digital plug on the Raduino.
Follow the HF signals diagram and see the wire colours there.



Re: Crystal CW filter with Version 4 uBITX boards? #ubitx

Jerry Gaffke
 

Exactly how do the transformers ruin this?
The uBitx transformers are broadband.

I was imagining somehow holding both filters to 200 ohms, using only one set of transformers. 
That might be tough to do and still get the desired filter characteristics.
Though a CW filter may not need such a flat top.

Might be possible to have two sets of transformers in parallel.
The transformers don't have a fixed impedance, they just establish an impedance ratio.
So a high impedance into the filter should mean much higher than 50 ohms into that transformer.
Though all sorts of ways for this to trash performance.

I'd be fine with pluggable filters.
But am curious where dual filters would fail.

As your 45mhz-DialFreq spur shows, things can quickly go south in unexpected ways.
Measurements are  useful.
Even if it seems to work.

Jerry 

 


On Sat, Jul 7, 2018 at 04:51 pm, ajparent1/KB1GMX wrote:
The big difference is the lack of transformers it actually helps for that.  That version of the
bitx runs the amp interfaces at 200ohms.  In that case the unusd filter is not likely to
look like a rf short.  I wonder if the ubitx can be talked into running without the
transformers for the filter.  Either an L-network or none at all.  It may impact the
filter bandwidth and shape factor some.  I may test that for a single filter.

It should work but the choice of filter frequencies needs a little consideration to
avoid bleed though and spurs.  Things like non harmonically related and not
too close to the same frequency.


Re: MIC pins for amateurradiokits.in case

k5map@...
 

John,

Much thanks for your reply... I've attached a pic from FB page which shows different color wires.  Could you please match your wires in your post above to the ones in this pic?

73, Mike


Re: MIC pins for amateurradiokits.in case

John Sharpe
 

I wired my mic socket like this one - it is an old Kenwood standard.
 
The ubitx wiring is Violet and Blue = microphone with the blue being the grounded side.
In my arrangement Violet goes to pin 1 abd Blue to pin 4. 
 
Orange is the PTT line and goes to pin 2. Pin 3 is grounded near the socket.
 
You can wire it any way you like as long as it matches the mic/ptt connections in the four-pin plug.
You have to make sure these match. I’m using a cheap Baofeng mic which I rewired.
 
73, John
 
 
 
Related image
Image result for 4-pin mic socket  kenwood


Re: HEX files with Mac OS

Bill Watkins
 

Avrdude, verbose output while loading another code, mac terminal,  copy and paste.  Finally!

Thanks for the tips and the patience.

https://forum.arduino.cc/index.php?topic=410618.0

Bill
K0WHW


DSA815-TG spectrum analyzer upgrade.

Glenn
 

For those that have this popular SA, and it wasn't bought recently, there is a free upgrade available for it, to improve the resolution bandwidth (RBW) from 100Hz to 10Hz.

Its easy to do, just follow the instructions included in the download.

https://int.rigolna.com/products/spectrum-analyzers/dsa800/

Glenn
vk3pe


Re: W8TEE Power/SWR Sketch for Nano

Mark M
 

That's the problem sometimes with written stuff like this...you can't see the grin or the smirk or the wink so sometimes it doesn't come across as intended, that's where the smilies, etc come in.

Anyway, keep us posted on progress, I'm sure this will be another popular kit...if it works. ;)

73.... Mark AA7TA

On 7/7/18 6:51 PM, Kees T wrote:
OK, I understand ...and it was funny. I blame the misinterpretation on my Dutch background. When I was in grade school and giving a weekly "news report" at the front of the class, I asked the teacher if I could discuss a second news item. She said "No, Kees, you might be stepping on someone's toes". I said, "Oh no, Mrs xxx. I wouldn't be stepping on someone's toes, just talking".
73 Kees K5BCQ


Re: uBitX on 24v?

Howard Fidel
 

If you are running on +24V I would change C98 and C99 to 35V parts, they won't last very long on 24VDC.
Howard

On 7/7/2018 10:09 PM, ajparent1/KB1GMX wrote:
Yes!  Keep it under 3.5A  it may want more but max power under needs to be kept under 30W.

Doing that the heat sinks are too small by a large margin.    When I do that the sink is typically
4x6 (flat surface) x1.25(height of fins) or larger.  You will need heatsink compound and insulator
kit.  Heatsink must be grounded.

Also the rest can be run at 12V.

Allison



MIC pins for amateurradiokits.in case

k5map@...
 

I purchased one of the amateurradiokits.in cases and I'm very pleased with it... 

I've begun the assembly using the parts included in the case.  One such part is the 4-pin MIC connector.  I've read his FB page but he does not show sufficient detail which shows which MIC pin connects to the PCB board.  Does anyone have a pic of the MIC connector showing which pins connect to their other end on the front PCB?

Mike / K5MAP