Date   

Re: Question about power output #v5 #ubitx

Anthony F4HUY
 

Hi Jerry,

thx you, it's a good start to check.
my ubitx run with v5.1 firmware (that i can see on the screen at startup)
my oscilloscope can up to 50mhz,
yesterday, i have cheked the rf connector, i use SO239 instead BNC because my antenna and TOS meter is already PL/SO239

i 'll check this weekend, relay, coils, and test point, and back to you.

73'


Re: Rugged Case Options? #ubitx

Rob French (KC4UPR)
 

Jerry, what do you think about this case as far as portable use?  I was a little concerned with the vents, I figure they'd make it a lot easier for foreign matter to get in there.

Rob KC4UPR


Re: display upside down

David Alexander
 

i fixed the problem by turning over the display.  works
dave
k7da

On 1/15/2020 7:03 PM, Jack, W8TEE via Groups.Io wrote:
I haven't look at Farhan's code in detail, but the Adafruit library has a setRotation() call that allows you to rotate the orientation of the display. I don't know if Farhan is using it, however.

Jack, W8TEE

On Wednesday, January 15, 2020, 5:22:53 PM EST, Evan Hand <elhandjr@...> wrote:


You will need to provide the details on the uBitx: version, any extra addons, etc. 

Best choice is to just remove and reinstall the display.

73
Evan
AC9TU

--
Jack, W8TEE


#ubitx-help #ubitx-help

Tony
 

Hi my name is Tony ei3it, A friend of mine left me in a uBitx he built which has a problem the raduino nano witch seams dead no reaction from it the display lights up but nothing happens, so put my raduino nano into his unit and away she went worked perfectly.
Now I was trying to get a complete board but no success so fair, I wonder how could I get help.
I have heard that chaps have built a version I wonder could I get 1 or 2 of them depending on availability HI Hears hoping some one can help, thanks   


Re: display upside down

Jack, W8TEE
 

I haven't look at Farhan's code in detail, but the Adafruit library has a setRotation() call that allows you to rotate the orientation of the display. I don't know if Farhan is using it, however.

Jack, W8TEE

On Wednesday, January 15, 2020, 5:22:53 PM EST, Evan Hand <elhandjr@...> wrote:


You will need to provide the details on the uBitx: version, any extra addons, etc. 

Best choice is to just remove and reinstall the display.

73
Evan
AC9TU

--
Jack, W8TEE


Re: display upside down

 

Just what I had in mind, maybe a VK/ZL version was sent to US ?

Raj


At 16-01-20, you wrote:
QTH is in north or south hemisphere?

_._


On Wed, Jan 15, 2020 at 3:07 PM David Alexander <oldbeeman@...> wrote:
thinking about this the picture was rightside up when i first connected to as i had it in the panel and was working.
what might have happened?
dave


On 1/15/2020 1:23 PM, David Alexander wrote:
is there a way to turn the picture over on the display.

apparently  i mounted the display upside down.
you would have thought that the  labels would be right side up when mounted but i guess not cause the picture is wrong now.

dave k7da


Re: #ubitx #ubitx-help #v5 Where to buy power socket #ubitx #ubitx-help #v5

Wayne Leake
 

 Some hams I knew in Californicated were using 120 V AC plugs on their radios. However, that is a piss poor Idea, considering what that voltage can quickly do to an item made for 12VDC, should someone happen to plug it into an AC outlet.
 The Powerpoles are nice, but a bit costly.
 I bought some sockets similar to the ones that came with the BITX 40 and the ubitx, as far as I know, on EBay pretty cheap. They are still pretty much ideal for the BITX and UNITS radios, and low cost to boot if you shop a bit.

Wayne WA2YNE


Re: #ubitx #ubitx-help #v5 Where to buy power socket #ubitx #ubitx-help #v5

Alex Netherton
 

If I were putting in another power socket, I would use Anderson Power Poles. They give a positive connection, and are unlikely to be cross polarized.
I use them on everything!
73 de W5ALX


On Wed, Jan 15, 2020 at 8:56 AM Przemek <przemek.naganski@...> wrote:
My power socket does not provide a good connection. Where can I buy new ones (preferably on aliexpress). What is the socket model


--
Alex Netherton, W5ALX
Buncombe County NC, EM85ro


Re: bitx 40 pcb

Wayne Leake
 

For anyone interested in bare boards for BITX40 and 20, amateurradioits.in still has some different ones available.
 The one I purchased uses certain social SBL something mixers. One they sell uses ADE something mixers, and some use easy to make mixers.
 Just a thought.
 I might buy an older version board later on for future use.

Wayne WA2YNE

On Wed, Jan 15, 2020, 1:01 PM Dave Dixon <wylyeguy2@...> wrote:
Dave
         i have a fully populated version 3 board minus raduino email me off site daveg0ayd@...

On Wed, 15 Jan 2020 at 15:48, dave <dgclifford@...> wrote:
anyone got a bix40 pcb bare or (partially) populated they want to part with  dave c  gw0nvf


Re: sotabeams filter installation

Mike WA0YCN
 

Wouldn’t it work to insert it between audio connector for volume control high side and the control?


Re: display upside down

Arv Evans <arvid.evans@...>
 

QTH is in north or south hemisphere?

_._


On Wed, Jan 15, 2020 at 3:07 PM David Alexander <oldbeeman@...> wrote:
thinking about this the picture was rightside up when i first connected to as i had it in the panel and was working.
what might have happened?
dave


On 1/15/2020 1:23 PM, David Alexander wrote:
is there a way to turn the picture over on the display.

apparently  i mounted the display upside down.
you would have thought that the  labels would be right side up when mounted but i guess not cause the picture is wrong now.

dave k7da




Re: display upside down

Evan Hand
 

You will need to provide the details on the uBitx: version, any extra addons, etc. 

Best choice is to just remove and reinstall the display.

73
Evan
AC9TU


Re: display upside down

David Alexander
 

thinking about this the picture was rightside up when i first connected to as i had it in the panel and was working.
what might have happened?
dave


On 1/15/2020 1:23 PM, David Alexander wrote:
is there a way to turn the picture over on the display.

apparently  i mounted the display upside down.
you would have thought that the  labels would be right side up when mounted but i guess not cause the picture is wrong now.

dave k7da




display upside down

David Alexander
 

is there a way to turn the picture over on the display.

apparently  i mounted the display upside down.
you would have thought that the  labels would be right side up when mounted but i guess not cause the picture is wrong now.

dave k7da



Re: sotabeams filter installation

howard winwood G4GPF
 

Hi,
The onboard LM386 is still used but I have taken the output to the input of the sotabeams filter, the sotabeams filter has two outputs so used the circuit provided by sotabeams (it is on their website) this new LM386 pzrovides the speaker output. The only problem is that you now have two volume pots, one sets the input of the filter so that the red led just starts flickering, the other sets the main volume.
Problem 2 was, no room in my case for a second 10k pot.
Problem 2 solved by AliExpress in the form of a dual 10k pot with separate coaxial shafts. made up a couple of knobs to fit, back one sets filter input, front one sets main volume. You can buy the pair of knobs but I had the facilities so made my own.
the track that needs to be broken is the audio out pin of the analogue connector on the front panel stereo socket board, this is the brown wire, the track goes to the phone socket.
take the audio output from the brown wire (now isolated) to the input of the sotabeams filter. the new speaker out from the second LM386 goes to the other side of the break i.e the phone socket.
mMy second lm386 was built on a piece of perf board 4.5cm by 2.5cm or 10 holes by 16 holes. The sotabeams filter sits in the bottom of a small plastic box 6cm * 5cm * 2.5cm, the amp board sits on top of the filter
with a piece of credit card plastic between the two. Just make sure the pushbutton on the filter board is not pressed.( i made a small cut out in the plastic!)
i used a spare 8 way wired connector that came with the enclosure box to plug onto the filter board, the other two pins 9 and 10 , 9 is not used 10 is another earth so not really needed, i used this pin to connect the two led's to ground. Sounds a lot worse than it is, I mounted the box as near the front panel, left side looking from front, as possible to keep the wiring short .
Howard G4GPF


Re: Question about power output #v5 #ubitx

Jerry Gaffke
 

Here's a corrected version of that chart showing how TXA,TXB,TXC get mapped to specific bands.
Corrections are:  30m should read 10m for 30mhz,   and  "else c=0 for 40m, else 80m".

Note that the 10m LPF also handles 12m and 15m, the 20m LPF also handles 17m,
the 40m LPF also handles 30m,  and the 80m LPF also handles 60m, true for all versions.
I've added a third line to show Allison's hacked v3,v4 board, which fixes the LPF harmonics.
The symbols a, b, and c refer to signals TXA, TXB, and TXC from the Nano out to the three LPF relays.


##########################
Here's what the routine setTXFilters() does in the firmware for v3,v4,  and  v5,v6.  Also v3,v4 with Allison's hack:
                        10m   20m   40m   80m
ver 3,4:   abc = 000    100    110    111        # a=0 for 30m, else b=0 for 20m,  else c=0 for 40m, else 80m
ver 5,6:   abc = 000    100    010    001       # 1 to engage each filter for 20m,40m,80m,  but 30m is always inline
allison:    abc = 000    010    001    100       # hack to v3,v4,  now similar to v5,v6 boards except filters ordered differently
##########################


Allison, KB1GMX, gets major kudos for this fix addressing the LPF harmonics, which Farhan then used on v5 and v6:
    https://groups.io/g/BITX20/wiki/uBITX-spur-and-harmonics
Allison kept the physical placement of the v3,v4 filters the same as much as possible to avoid excessive rework, 
Farhan ordered them logically on the new v5,v6 builds. 
Allison's hack can be made firmware compatible with v5,v6 boards by either swapping around the TXA,TXB,TXC
signals via cutting traces and adding wire jumpers, or by stuffing all the LPF L's and C's differently.
Unfortunately, it's a lot of work to do all the mods required for Allison's hack, and difficult to verify without a spectrum analyzer.
Replacing the relays with Axiom parts on v3,v4 boards is easier, adding an outboard LPF filter assembly is easy and thorough.

It is possible to operate the uBitx on 160m.  But for all versions, you must add a low pass filter appropriate for 160m 
in line between the uBitx and your antenna to cut down the harmonics.  Otherwise the 3'rd harmonic will be 
almost as strong as your 160m fundamental.

Jerry, KE7ER



On Wed, Jan 15, 2020 at 08:25 AM, Jerry Gaffke wrote:
Here's what the routine setTXFilters() does in the firmware for v3,v4 and v5,v6 boards:
                        30m   20m   40m   80m
ver 3,4:   abc = 000    100    110    111        (a=0 for 30m, else b=0 for 20m,  else c selects 80m not 40m)
ver 5,6:   abc = 000    100    010    001       (1 to engage each filter for 20m,40m,80m,  but 30m is always inline)
 


Re: bitx 40 pcb

Dave Dixon
 

Dave
         i have a fully populated version 3 board minus raduino email me off site daveg0ayd@...


On Wed, 15 Jan 2020 at 15:48, dave <dgclifford@...> wrote:
anyone got a bix40 pcb bare or (partially) populated they want to part with  dave c  gw0nvf


V6 on the air #ubitx #v6

Jim Sheldon
 

I've been having fun with my V6 uBITX on the air while I'm waiting on some revised prototype boards to arrive from China.  I'm mainly a CW op and and that usually works best QRP anyway.

Worked K9CT on 40 a couple days ago (got him first call), W3R on 20 yesterday (again, first call) and just a few minutes ago worked W1VE on 20 meters.

My antenna is an end fed Zepp QRP antenna (PAR EndFedZ) and it's only 15 feet off the ground plus it's only about 3 feet above the roof of my house.  I use it mainly for testing when I'm working on things like the uBITX.

I was also using our TSW Teensy 4.0 to NANO plug in adapter on the Factory supplied V6 Raduino.  For the CW ops out there having problems with the keyer timing in the stock firmware, you might consider changing over to the Teensy 4.0 and our latest firmware (available from TSW) as the keyer operates like it should with decent timing.  TX starts immediately on the first character element and if you set CW Delay to 200-250 milliseconds, it comes back to RX fast enough that you don't lose the other guys first character.

All the details are on the TSW website - www.w0eb.com .  Using the adapter, you might have to bend the 7805 regulator slightly toward the bottom of the factory V6 Raduino in order for the bottom edge to clear the heat sink on the 7805 (Factory has it a bit too close to the NANO socket).

I've been running the rig on the air configured like this for quite some time now and have run into no issues at all regarding the Teensy 4 replacing the NANO as the CPU.  Nice thing is the Teensy 4.0's available program space is only 2 percent full whereas the NANO with current software is around 90 percent full.  Add much more to the NANO's program and there won't be enough room for the program to operate properly. 

Some people are balking at the $19.95 price of the Teensy 4.0 but yet they are willing to spend quite a bit more than that for the NEXTION display which won't fit the mounting holes of the factory case (so they have to modify it anyway) and also the NEXTION's connections are not really "plug and play" either. 

Using the Teensy 4.0 to NANO adapter is about as close to plug and play as you can get except for the need to use a separate key jack for the paddles.  If you don't use the keyer, and just use a hand key or plug in an external keyer you can use the PTT contacts on the microphone connector and you don't have to modify your pretty case. 

No matter what you do there are going to be compromises that will have to be made if you want to really speed up the display and allow for the ILI9341's available font libraries to be used. 

We've kept the screen close to what was original with a few useful additions and ours doesn't take 3-4 seconds to paint the display.  Also ours doesn't repaint the entire display every time you change something and doesn't "blink" when tuning or touching an on-screen button.  This is one of the real advantages of a 600 MHz processor vs the MUCH slower NANO.

Just food for thought ----

Jim, W0EB
TSW Project Coordinator


Re: No XMIT, No Recv #v6

Jerry Gaffke
 


That EEPROM thing is inside the ATMega328P processor chip used on the Nano.
    http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7810-Automotive-Microcontrollers-ATmega328P_Datasheet.pdf
It's 512 bytes a of a special kind of memory that that is easy to write to,
but sticks around when power is off.

Jerry


On Wed, Jan 15, 2020 at 07:28 AM, <k7ome@...> wrote:
The problem was the calibration value that was stored in the EEPROM (where ever that thing may be).


Re: No XMIT, No Recv #v6

Jerry Gaffke
 

Glad you found it.

Ideally, all firmware would have sanity checks on critical values stored in firmware,
ignore them if they are out of bounds.
And there should be an easy and obvious menu entry to revert to reasonable default values from flash.

Jerry, KE7ER
 


On Wed, Jan 15, 2020 at 07:28 AM, <k7ome@...> wrote:
Thanks for the reply Jerry and I think you're basically correct.  It's working again.  The problem was the calibration value that was stored in the EEPROM (where ever that thing may be).  I was implementing a change to the Setup code that would show the stored value when you went back to Setup.  Somehow - and I still don't see how it happened - the calibration value that got stored at some point included the entire frequency plus the calibration value! That made the calibration way out of range and shut everything down.  Even after reloading the original code the problem persisted because the EEPROM values stayed the same.  Once I had that figured out I forced the EEPROM value back to 875 and the radio started working again.  Now I can re-calibrate and see the stored values when I do. 

Well, I guess you have to expect that kind of stuff to happen when you go messing around with the code....