Date   

Re: Completed my QCX #ubitx

Russ KG0BK
 

That is one beautiful rig.
After all the work put in to it though . . . Just a (stupid?) question.
Why did you elect to go with the BNC antenna connector vs the SO-239?
You're using adapters to convert it to accept a PL-259.
Just curious.
Great job. . . . I want your case!
73 KG0BK


Re: ?- How high SWR before smoke? - 6146

Bill Cromwell
 

Hi Alison,
...Everybody,

I like to have a robust power supply. A homebrewed RF power amp with a 6146 suffered a fractured resistor that removed the grid bias. I heard the plate current meter hit the stop immediately followed by a crinkle sound from the tube and then the fuse blew. There was a melted place in the plate and the screen was *gone*. There was not even a little sigh from the power supply. Yes, tubes can be destroyed from those same things (even it takes more).

73,

Bill KU8H

On 07/06/2018 12:40 PM, ajparent1/KB1GMX wrote:
--snip---

High "SWR" rarely kills finals its often instability with reactive
loads. Overheating, over
voltage and over current can. Believe it or not those are the same
things that can kill
the venerable 6146!

Allison
--
bark less - wag more


Homebrew from scratch no audio #ubitx

napalm2099@...
 

Hi, my name is Diego and i'm from Argentina, this is my first post.
I scratch built my uBitx separating everiting in modules and a big board where everithing connects togheter
I'm have a big big trouble finding where i missed something because the radio has no audio at all.
I'm posting here the screen captured from my scope taken from the diferent test points, hoping someone can guide me in the right direction for fault finding.
As i see. the clocks from the radiuino are ok, but i'm not shure if the signals from the 1st and 2nd mixers are ok
I wound the toroids as specified and follow'd the schematics for V4 carefully, right now i'm not using the audio amplifier on the board, just an off-board audio amp just to take out of the chain, i'm taking the signal out of the demodulator but i have no audio at all, no static no nothing.
I'm able to upload pictures and more shots of the scope if needed.
Any help would be apreciated
Thanks in advance!







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

ajparent1/KB1GMX <kb1gmx@...>
 

Did you change the 2nd lo to convert the 45mhz signal to  the new IF??

The Existing IF is 11.995mhz (more or less).  Why are you messing with 4.6, 6.2, 8 and other frequencies?

Likely the filter part has a chance but everything else is plain wrong.

I have limited use for CW but making a filter using matched (within less than 50HZ) crystals at 12mhz
isn't that magic and narrow filters are easier.  However the end termination will NOT be 200ohms
and likely lower maybe 50 ohms which is also OK.  Are you switching the existing filter out or what?

Allison


Re: Completed my QCX #ubitx

pat griffin
 

Ralph,

Can you tell what voltage levels you are seeing there? On a strong signal I see about .4VDC across C4 of the AGC circuit.

Thanks,

Pat AA4PG


Pat Griffin
http://www.cahabatechnology.com/aa4pg.html


From: BITX20@groups.io <BITX20@groups.io> on behalf of Ralph Mowery <rmowery42@...>
Sent: Thursday, July 5, 2018 9:20:55 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Completed my QCX #ubitx
 
If you install the AGC kit you can just use it for the S-meter.  Just tap off the first pin where the several jumper pins are for the delay. Works fine.


On Thu, Jul 5, 2018 at 9:48 PM, WD8WV <juddie.d.burgess@...> wrote:
Pat,

I haven't built the S-Meter circuit yet.  I had it turned on but it really isn't doing anything, don't know why sometimes I see what appears to be signal since there is no circuit in it yet.  I have to order the LM358 chip, everything else I have.  I was going to do the circuit with the LM386, which I have 3 of those from where I was building Pixie kits.  I bought several and have 3 new ones left.  Dr Lee, KD8CEC texted me on his blog that it would be better to use the LM358 chip.  I just received in the mail the TX/RX pop fix kit and the AGC kit that I read about.  Of course I have never done SM soldering, so don't know if I will be able to do this.
--
Judd, WD8WV


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Vince Loschiavo
 

Thanks for doing the hard work. We all appreciate it!!  I ordered a 3.2 inch one. 
vince
N2AIE


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Joe
 

Richard,

Ian,  kd8cec is the big coder guru!  Allen kn4ud and myself ve1bwv are working the other things like screen support, testing and graphics enhancements etc.

Kd8cec's 1.095 is not released yet.. I thought it was but it is incorrect and version 1.094 is the current.

1. To load the radio code , use Xloader and load the hex file into the radio via the usb.  Ian has not released the Arduino .ino code yet
2. Load the .tft into the nextion as you described.
3. The ubitx manager is not required unless you wish to change some radio parameter.  The radio code v 1.094 supports nextion directly with no code  or ubitx manager changes required.
4. The Ubitx Manager program is very handy for changing many useful parameters but not required.  Programming function buttons,  s-meter, default startup freq etc etc 

Joe
VE1BWV

On Fri, Jul 6, 2018 at 8:15 PM Richard Spohn <wb2gxm@...> wrote:
I am a bit late to the Nextion party....was kind of "ignoring" it
until yesterday when I went to the Nextion website.  I've spent the
past 2 days watching youtube vids about the Nextion and about it and
the uBitx.  Very excited...THANK YOU IAN AND JOE, hope I didn't miss
anyone!  Now the question:  I have a version-1 uBitx.  Not modified in
any way.  I get that you only need to plug 4 wires between the Nextion
and the Raduino, TX RX 5v and Gnd.  I get that you need to load the
.tft file for the nx and the required size onto a SD card, make it the
only thing, put into the Nextion, power up and let it percolate, power
down, remove the card, pwr up and done.  I kind of get that you have
to load the right .hex file into the raduino.  Now...do I also have to
load "uBitx Manager" onto my PC and then make changes to the Raduino
through that?  If there is a "step by step" guide going from the stock
uBitx to the Nextion 1.095, I have yet to find it, understandable
given all the work you guys are doing.  Thanks again -- Rich WB2GXM




Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Mike Woods
 

Richard

There's no need to make any changes in uBITx Manager.  The .hex file for v1.095 beta is pre-configured to work with the Nextion display.

The rest of your steps are correct.   There's more than one way to upload files to the Nextion display, but using the micro-SD card is by the easiest.

Not sure if you have seen this series of articles on ubitx.net: http://ubitx.net/category/nextion-display/

73

Mike ZL1AXG

On 7/07/18 11:15 AM, Richard Spohn wrote:
I am a bit late to the Nextion party....was kind of "ignoring" it
until yesterday when I went to the Nextion website. I've spent the
past 2 days watching youtube vids about the Nextion and about it and
the uBitx. Very excited...THANK YOU IAN AND JOE, hope I didn't miss
anyone! Now the question: I have a version-1 uBitx. Not modified in
any way. I get that you only need to plug 4 wires between the Nextion
and the Raduino, TX RX 5v and Gnd. I get that you need to load the
.tft file for the nx and the required size onto a SD card, make it the
only thing, put into the Nextion, power up and let it percolate, power
down, remove the card, pwr up and done. I kind of get that you have
to load the right .hex file into the raduino. Now...do I also have to
load "uBitx Manager" onto my PC and then make changes to the Raduino
through that? If there is a "step by step" guide going from the stock
uBitx to the Nextion 1.095, I have yet to find it, understandable
given all the work you guys are doing. Thanks again -- Rich WB2GXM

--
Mike Woods
mhwoods@...


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Richard Spohn
 

I am a bit late to the Nextion party....was kind of "ignoring" it
until yesterday when I went to the Nextion website. I've spent the
past 2 days watching youtube vids about the Nextion and about it and
the uBitx. Very excited...THANK YOU IAN AND JOE, hope I didn't miss
anyone! Now the question: I have a version-1 uBitx. Not modified in
any way. I get that you only need to plug 4 wires between the Nextion
and the Raduino, TX RX 5v and Gnd. I get that you need to load the
.tft file for the nx and the required size onto a SD card, make it the
only thing, put into the Nextion, power up and let it percolate, power
down, remove the card, pwr up and done. I kind of get that you have
to load the right .hex file into the raduino. Now...do I also have to
load "uBitx Manager" onto my PC and then make changes to the Raduino
through that? If there is a "step by step" guide going from the stock
uBitx to the Nextion 1.095, I have yet to find it, understandable
given all the work you guys are doing. Thanks again -- Rich WB2GXM


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Lowell Haney NE4EB
 

On Fri, Jul 6, 2018 at 02:47 pm, Joe wrote:
we all end up with a great evolving project..
Joe, you said a mouth full.  I've been around amateur radio since the mid '70's. I have not seen ONE locus of, and I do not say this lightly, stunning advancement of a particular radio in the hands of the community like this one.

Have you?

I've seen modifications of gear, even helped in small ways before with IF taps for a vacuum tube based spectrum display, upgrading a tube based power supply (once, even a vibrator based mobile B+ supply) to solid state components.

This is different.

I'm watching the development of SDR, and have bought in (SDRPlay II), seeing RX filtering with vertical walls of arbitrary width that DON'T RING. This was hoodoo in analog circuitry. There is a transformation afoot in our gear and you guys are driving it.

Lowell 


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Joe
 

Lowell,

Well, it takes a team.
You have those who are gifted with math and coding, others who enjoy testing and enhancing functions or appearance.  
The end user provides feedback and suggestions and we all end up with a great evolving project..
Most importantly we are all willing to share and learn from each other to help the project grow, each contributing in the own way.

Lots of fun !!!

Joe
VE1BWV


On Fri, Jul 6, 2018 at 6:34 PM Lowell Haney NE4EB <lowell.haney@...> wrote:
My hat is off to you both for the effort you have put into this and just handed off to the community. You are making a difference, you're elevating the art, and you are helping transform a simple HF board into a quite serious radio.

I would just hope that one day I can do something that helps a fraction of the hams you guys have.

Lowell


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Lowell Haney NE4EB
 

My hat is off to you both for the effort you have put into this and just handed off to the community. You are making a difference, you're elevating the art, and you are helping transform a simple HF board into a quite serious radio.

I would just hope that one day I can do something that helps a fraction of the hams you guys have.

Lowell


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Joe
 

Joel,
Only the .tft file is required for the sd card  (it should be the only file)

Joe

On Fri, Jul 6, 2018 at 6:29 PM Joe <joeman2116@...> wrote:
3.2 and 3.2E have the same size 3.2 display
The files with a 7 in them are for the 7 inch display.

The hmi file allows you to load the editor and modify it

The tft is the compiled version which allows you to put it in your sd card and boot load it on the the display.
Then once you remove the micro sd card and reboot -- you have your display programmed.

Joe
VE1BWV


On Fri, Jul 6, 2018 at 6:15 PM Joel Caulkins <caulktel@...> wrote:
Hey Joe,

Why are there two different files for each display? I thought I read somewhere that I only need the .tft file. Do I need both on the SD card? I have a 3.2 E on order so trying to get everything ready for it's arrival.

Joel
N6ALT


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Joe
 

3.2 and 3.2E have the same size 3.2 display
The files with a 7 in them are for the 7 inch display.

The hmi file allows you to load the editor and modify it

The tft is the compiled version which allows you to put it in your sd card and boot load it on the the display.
Then once you remove the micro sd card and reboot -- you have your display programmed.

Joe
VE1BWV


On Fri, Jul 6, 2018 at 6:15 PM Joel Caulkins <caulktel@...> wrote:
Hey Joe,

Why are there two different files for each display? I thought I read somewhere that I only need the .tft file. Do I need both on the SD card? I have a 3.2 E on order so trying to get everything ready for it's arrival.

Joel
N6ALT


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Joe
 

Mike,

Good point.. I must run the editor and make my 7 inch  a 5 inch , compile then load into my 7 inch to see the if the button size is still large enough.
If the buttons are still large enough then the 5 would be good to go.....

Moving down in physical size is much easier  if the res is the same.
Going up in physical size causes the clarity of the graphic to  begin to loose their crisp clean appearance.

Joe
VE1BWV

On Fri, Jul 6, 2018 at 6:14 PM Mike Woods <mhwoods@...> wrote:
Joe

The 5" has the same resolution as the 7" so it is a simple process of changing the screen type and everything should work without any other changes required (similar to the 2.4" and 2.8" same resolution screens).

You and Allen are doing a great job in resizing for the larger screen sizes!

Mike

On 7/07/18 7:35 AM, Joe wrote:
Not yet but we are in the process of doing a 5 inch.
Work is just being finished on 3.5 ver.
Kn4ud, Allen had some computer issues.

He is going to order a 5 inch and that is the next display size on the list


Joe
VE1BWV



On Fri, Jul 6, 2018, 2:53 PM Jim Sheldon <w0eb@...> wrote:
I really hate the Nextion editor though, The pix you have to work with runs everything together and either I'm missing something in the instructions, or this is one of the poorest designed GUI editors I've ever seen.

Jim , W0EB

------ Original Message ------
From: "Kees T" <windy10605@...>
Sent: 7/6/2018 12:31:55 PM
Subject: Re: [BITX20] NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

WOW ! You guys are amazing. I'm very impressed with the graphics.

73 Kees K5BCQ (a non programing type)


--
Mike Woods
mhwoods@...


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

 

Hey Joe,

Why are there two different files for each display? I thought I read somewhere that I only need the .tft file. Do I need both on the SD card? I have a 3.2 E on order so trying to get everything ready for it's arrival.

Joel
N6ALT


Re: NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

Mike Woods
 

Joe

The 5" has the same resolution as the 7" so it is a simple process of changing the screen type and everything should work without any other changes required (similar to the 2.4" and 2.8" same resolution screens).

You and Allen are doing a great job in resizing for the larger screen sizes!

Mike

On 7/07/18 7:35 AM, Joe wrote:
Not yet but we are in the process of doing a 5 inch.
Work is just being finished on 3.5 ver.
Kn4ud, Allen had some computer issues.

He is going to order a 5 inch and that is the next display size on the list


Joe
VE1BWV



On Fri, Jul 6, 2018, 2:53 PM Jim Sheldon <w0eb@...> wrote:
I really hate the Nextion editor though, The pix you have to work with runs everything together and either I'm missing something in the instructions, or this is one of the poorest designed GUI editors I've ever seen.

Jim , W0EB

------ Original Message ------
From: "Kees T" <windy10605@...>
Sent: 7/6/2018 12:31:55 PM
Subject: Re: [BITX20] NEXTION DISPLAY UPDATES For KD8CEC ver 1.094 up

WOW ! You guys are amazing. I'm very impressed with the graphics.

73 Kees K5BCQ (a non programing type)


--
Mike Woods
mhwoods@...


Re: TX frequency? of uBitx at CWL and CWU mode #ubitxcw

Don Meyerhoff
 

Michael,

We're you able to get a copy of 1.095 and if you did do you have a link for it? I'm running 1.094 but would like the CW shift feature in ubitx manager.

73

Don Meyerhoff
WA2SWX


On Tue, Jul 3, 2018, 8:53 AM Michael Babineau <mbabineau.ve3wmb@...> wrote:
Ian : 

Yes I am currently using V1.094 beta with the Nextion 2.8" Display.

 I will upgrade to V1.095 and try that.

Cheers

Michael VE3WMB 


Re: Running on a Jump Box

M Garza <mgarza896@...>
 

Gwen,
Here are the PA BIAS adjustment notes from HF Signals:

Marco - KG5PRT

On Fri, Jul 6, 2018 at 12:56 PM Gwen Patton <ardrhi@...> wrote:
Ok, I'll not limit the current.

Can anyone give me advice on how to PROPERLY adjust RV1? It and RV2 are the bias adjustments for the finals, right? Do I need to adjust them both, and is there something I should NOT do when diddling those adjustments? Would any diagnostic tools (besides a wattmeter on the output) help?

Gwen, NG3P


Re: Just built my ubitx, can't receive anything #ubitx-help #ubitx

Tue Iron
 

hi andrew, does your volume control increase the sounds. ?.
if not check the wiring to the volume control make sure the orange wire is in the middle. good luck .ken.

On 6 July 2018 at 20:09, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:
The junky SW receiver assumes you have a junky antenna to go with it,
and so has spent an extra $0.25 on more RF gain.

The uBitx assumes you have a resonant antenna system suitable for transmitting.
If it had as much RF gain as the junky SW receiver, it would badly overload on strong signals
when hooked up to a decent antenna.
Fairly typical of a communications receiver to expect a good antenna.

You could have both, add maybe 20dB more gain around Q10 and also add an RF gain control.
Be careful how you go about it though or you will compromise the noise floor when working with a good antenna.
The uBitx is meant to be a good minimalist rig, if you want to add extra stuff it's up to you.



On Fri, Jul 6, 2018 at 11:18 am, <andrew.pater.brown@...> wrote:
I can't imagine that I need 50 feet of antenna to pick up WWV when I used to be able to listen on a junky SW receiver with a 3 foot long antenna. And again, I'm able to pick up transmissions on my Drake TR4 with the same piece of random wire.