Date   
Re: display upside down

Arv 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....

Two BitX40's For Sale

Christopher Miller
 

I sent you an email.

On Tue, Jan 14, 2020 at 9:46 PM Jim WB2LHP in MI <jmarco1955@...> wrote:
Assembled BitX40 is sold. Unbuilt BitX40 v3 with Universal Maroon Case II still available. $100 shipped. CONUS only. PayPal preferred. Thanks for looking...Jim WB2LHP

Re: Question about power output #v5 #ubitx

Jerry Gaffke
 

Firmware for a v3 or v4 board mistakenly installed on a v5 or v6
would seriously attenuate 80 and 40 meters, but 10 and 20 meters should be unaffected.
Operation on 80 and 40 would be as if the antenna was disconnected, might damage the IRF510's.

Firmware for v5 or v6 on a v3 or v4 board would allow harmonics out on 80 and 40 meters
since only the 30m filter would be getting used, but again 20 and 10 meters are unaffected

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)
 
To get the symptoms reported (particularly an attenuated 20m) would require two different problems
out in the LPF's.   Possible, but seems more likely to be trouble further back in the power amp somewhere.

He reports that CW transmissions are also affected, so not an issue of anything prior to the first mixer at D1,D2.

Jerry, KE7ER


On Wed, Jan 15, 2020 at 06:38 AM, Gary Anderson wrote:
Simple question:
Are you using the factory V5 firmware?  Confirmed that your board is a V5?

With board changes from V3/4 to V5 the BFO and filter circuits changed.
I haven't gone through the logic mapping of what exactly would happen on the LPF circuits if the wrong version of firmware is used, but it will be problematic.

Re: extra nano board

Evan Hand
 

If you are referring to the KD8CEC stand alone s meter and spectrum analyzer, it is on the Hams Key Blog. the latest is here:

http://www.hamskey.com/2018/08/standalone-signal-analyzer-i2c-type.html

Otherwise you can search Hamyskey blog, the messages section in this group, or ubitx.net for other sources.

73
Evan
AC9TU

sotabeams filter installation

dave
 

going to fit a sotabeams  cw filter to my ubitx v5 ,where can i insert this on the board (before lm386 amp) if any one has done this what tracks will i need to break into as i would ike to fit inside the case   many thanks dave c

bitx 40 pcb

dave
 

anyone got a bix40 pcb bare or (partially) populated they want to part with  dave c  gw0nvf

Re: #uBitx #v4 and #sdr panadapter #ubitx #v4 #sdr

Mike McGuigan
 

I have the same question did you ever get a answer?

Mike

Re: No XMIT, No Recv #v6

k7ome@...
 

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....

Re: Question about power output #v5 #ubitx

Gary Anderson
 

Simple question:
Are you using the factory V5 firmware?  Confirmed that your board is a V5?

With board changes from V3/4 to V5 the BFO and filter circuits changed.
I haven't gone through the logic mapping of what exactly would happen on the LPF circuits if the wrong version of firmware is used, but it will be problematic.

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

Przemek
 

My power socket does not provide a good connection. Where can I buy new ones (preferably on aliexpress). What is the socket model

extra nano board

David Alexander
 

where can i find the lashup for the extra board.  i had not been following that thread and now i would like to add these features to the radio.

dave k7da