Date   
Re: Flrig and uBitX not connecting

Dean Souleles
 

Hi Vic,

Flrig is 1.3.45

Settings below...similar to yours but not exactly the same.  

73, 
Dean
KK4DAS

Re: Future Ubitx, SWR layout lines on PCB.

Peter LB0K
 

This could be an interesting idea, of putting these lines on the mother PCB but this would form a reflectometer,  a set of two matched pick-up lines with a primary line, and would be very short compared to the wavelengths involved at HF. This is generally used for single band use at VHF or UHF.

I suggest that a Bruerne or a Stockton/tandem match bridge would be a better choice for the HF bands and be more versatile.

The Stockton match can also be arranged with switching and a dummy load to provide quiet matching, of the antenna.

As pointed out by other people, all these facilities do add to the costs involved.

`FRESH START #bitx20help cw locks uo #bitx20help

dave
 

there is a lot to be said for perseverance, at last i finally got it back to stock but when sending cw unless you send very slow /large gaps it locks up and sends a burst of steady  cw,  could this be a relay problem or is it software related. tx/rx led switches as well , learnt an awful lot, but there is a real need for a step by step guide that does not expect knowledge of arduino ide et al . 71 and still learning .  many thanks to those who offered advice along the way  dave c   GW0NVF.

Re: Flrig and uBitX not connecting

Vic WA4THR
 

What version of Flrig and what are your port settings, Dean? I was also trying with a Win10 machine at the time and only had issues trying to run Flrig with my v.4 uBitX running CEC software.

=Vic=

Re: uBITX V6 Headphone Jack not Working Correctly

Reed N
 

I haven't finished my radio yet, but I just buzzed out the speaker header, and the connection from Audio pin 7 loses continuity when I plug headphones into the headphone jack. Sorry I can't be more helpful...


Reed

ubitx #v6 Screen Speed Mod #v6

Reed N
 

I don't have my full radio built yet, but I have spent some time speeding up the screen refresh. The screen speed increases are due to the fabulous work done by Xark: https://github.com/XarkLabs/PDQ_GFX_Libs , so my contribution on that front are purely the integration into this project.

I intentionally kept the UI fairly similar to Ashhar's original release, however it's now much faster and easier to change colors, layout, etc.

NOTE: While I've tested the UI a fair amount, I have NOT actually run a radio with this. I'd definitely appreciate feedback if anybody is willing to give it a go on a fully built rig!

https://github.com/reedbn/ubitxv6/tree/pdq_gfx_update

If the current state looks good and is working on a full-up rig, I'll create a PR before tackling other code updates.


Reed

Re: ubitxV6 Bricked? #v6

Reed N
 

Well I haven't managed to figure out why the display is always blank on boot. I've tried all of the USB power supplies in my house. Resetting the nano (via serial port's reset line) boots up just fine, so hopefully once I have the full radio built up and running off of 12V through the regulator, whatever startup sequencing is causing the current issues will be fixed.


Reed

Re: v6 cw wpm? #cw

Ashhar Farhan
 

On v6, pressing the tuning knob makes you jump from button to button. Rotate to select the button and then press again to select it.
The GUI is fully usable without touching. This was the first step towards making it accessible for the visually challenged. You will also notice that the screen is dark themed to avoid eye fatigue.
- f


On Thu 2 Jan, 2020, 2:01 AM timemeddler via Groups.Io, <timemeddler=yahoo.com@groups.io> wrote:
okay got it. the courtesy tone is off, but I can live with that.

Re: IRF510 insulation question #v5

RussB
 

Don,

It's not operator.  It's "creative maintenance "
Russ. WD9DD

On Wed, Jan 1, 2020, 1:16 PM Don - KM4UDX <dontAy155@...> wrote:
If Evan says it, recommend you take his advice to the bank. 

On the other hand, I didn't insulate the heat sinks under the misguided motivation to maximize heat transfer. Given I Chernobyl'ed my PAs due to "operator error", I got more sensitive to heat (mis) management.
Note the big ugly hacked up heat sinks, with no insulation.  Though big and ugly (like my teenage self...), they work like gangbusters. And they should not touch each other (yea, I learned that as well...). 

Now, they are just waiting for a probe at ground potential, or a errant wire, or a fat finger, or a stray random unplanned event. Like a time bomb with no expiration date. Then I will regret my choices.

I did order some alumina ceramic insulators that have a high heat transfer rates.  So when they come in, I will put them in and lower the risk of smoke and excitement. But for now...we live dangerously...and cool...



Note that with 24V+ to the finals, the big heat sinks, the 40mx40mx20 fan, the rig makes 20 to 30 watts without a fuss. And no spectral complaints. Beyond the kitchen speakers that buzz when the rig hits 80m TX for 2 full minutes doing WSPR duties...I learned how to turn off the kitchen speakers because my WSPR operations are much more important....hahah.

Don
km4udx

Re: Finished v5, gonna smoke test it this evening

Ted
 

Yes, that is correct: both of those wires are unused in the stock (unmodified) build.  

Hope the magic smoke doesn't leak out!


-Ted
 K3RTA

Integrating NESCAF audio filter

Curt
 

finally got around to building and connecting a Nescaf board to go into the rig.  its dangling outside, but working nicely.  I plan to only add only one knob, the bandwidth control, and keep it on - so it becomes a variable bandwidth control on the front panel that is useful for all modes.   

the center frequency control is eliminated - I installed a 5k resistor in its place, and adjusted the on-board pot to the sidetone pitch.  When I widen the bandwidth control SSB sounds just fine - meaning one control is enough. the bandwidth adjustment even helps on SSB, and of course a huge help in CW.  (someone might argue that the 700 Hz center filter isn't ideal for SSB - but it sounds fine as integrated with the v4 xtal filter shape). 

the filter adds a LM386 amplifier, so its quite welcome on the v4 to boost the output a bit - its not wired yet to the speaker but it should do better.  the nescaf board has an audio gain adjust, as for outboard use it is intended to allow user to set the board for unity net gain. 

I notice the US based seller New England QRP Club does not have them in stock at present, but worth asking in case there is enough demand to create another batch.  Perhaps other SCAF filters are around - I strongly suggest one that implements bandpass filtering. 

wow this all-analog signal chain uBITX is sounding nice. 

73 Curt

Re: IRF510 insulation question #v5

Ted
 

Don,  

I thought I was alone in salvaging heat sinks from other equipment by means of a chain saw or an axe.....

:) 

But seriously, I run about 20V on my finals and see little increase from, say, 19v thru 24V. At least, not statistically-significant enough to warrant the extra amp draw; maybe another watt or two for that volt increase. I'd like to hear of your experience with it & at what point, if you experimented, you saw diminishing returns.  

Better heat sink transfer would help. Aluma-ceramic, you say?  Must do research. Thanks.


73,

Ted
K3RTA

Re: Version 5 ubitx microphone wiring

Mark Hansen <iowasailor726@...>
 

Thanks!

On Wed, Jan 1, 2020, at 3:21 PM, Mark Hansen wrote:
Thanks, Curt!


On Wed, Jan 1, 2020, at 3:14 PM, Curt via Groups.Io wrote:
Mark

as Dean suggests, there is no standard in how commercial microphones are arranged - nor a clear standard in how this 4 pin connector is set up on the uBITX (even in our large local group build LOL).  

no audio may mean the audio from your microphone doesn't match how you have this 4 pin connector arranged.  since your PTT is working - your PTT and ground connections are correct.  that leaves only 2 pins - so try moving the third wire.  first use your DVM or other continuity checker to ID the PTT and ground wires - then just switch the 3rd wire to the unused pin to see if that works. 

take care on these last steps toward a nice rig

73 Curt

Re: Version 5 ubitx microphone wiring

iowasailor726@...
 

Thanks, Curt!


On Wed, Jan 1, 2020, at 3:14 PM, Curt via Groups.Io wrote:
Mark

as Dean suggests, there is no standard in how commercial microphones are arranged - nor a clear standard in how this 4 pin connector is set up on the uBITX (even in our large local group build LOL).  

no audio may mean the audio from your microphone doesn't match how you have this 4 pin connector arranged.  since your PTT is working - your PTT and ground connections are correct.  that leaves only 2 pins - so try moving the third wire.  first use your DVM or other continuity checker to ID the PTT and ground wires - then just switch the 3rd wire to the unused pin to see if that works. 

take care on these last steps toward a nice rig

73 Curt

Re: IRF510 insulation question #v5

Don - KM4UDX
 

If Evan says it, recommend you take his advice to the bank. 

On the other hand, I didn't insulate the heat sinks under the misguided motivation to maximize heat transfer. Given I Chernobyl'ed my PAs due to "operator error", I got more sensitive to heat (mis) management.
Note the big ugly hacked up heat sinks, with no insulation.  Though big and ugly (like my teenage self...), they work like gangbusters. And they should not touch each other (yea, I learned that as well...). 

Now, they are just waiting for a probe at ground potential, or a errant wire, or a fat finger, or a stray random unplanned event. Like a time bomb with no expiration date. Then I will regret my choices.

I did order some alumina ceramic insulators that have a high heat transfer rates.  So when they come in, I will put them in and lower the risk of smoke and excitement. But for now...we live dangerously...and cool...



Note that with 24V+ to the finals, the big heat sinks, the 40mx40mx20 fan, the rig makes 20 to 30 watts without a fuss. And no spectral complaints. Beyond the kitchen speakers that buzz when the rig hits 80m TX for 2 full minutes doing WSPR duties...I learned how to turn off the kitchen speakers because my WSPR operations are much more important....hahah.

Don
km4udx

Re: Version 5 ubitx microphone wiring

Curt
 

Mark

as Dean suggests, there is no standard in how commercial microphones are arranged - nor a clear standard in how this 4 pin connector is set up on the uBITX (even in our large local group build LOL).  

no audio may mean the audio from your microphone doesn't match how you have this 4 pin connector arranged.  since your PTT is working - your PTT and ground connections are correct.  that leaves only 2 pins - so try moving the third wire.  first use your DVM or other continuity checker to ID the PTT and ground wires - then just switch the 3rd wire to the unused pin to see if that works. 

take care on these last steps toward a nice rig

73 Curt

Re: Considerations for CAT Control of a V6

Don - KM4UDX
 

Yes, Dean has it exactly right.

Disconnect nothing. Don't. Touch. It. 

Said another way...walk away from the 12v...and walk away from the 5V...

Plug in the CAT when you want it, and unplug when you don't. No need to worry about the 5V into rig from the USB port. Most of us leave the CAT usb plugged in anytime the supporting computer is in the ham shack...or little table in my case.

Simple simple simple....let the uBITX manage all the internal complexities...you plug and play....hahah.  Mind you I did the exact opposite of this, but then I've got too much time on my hands. hahaha. 

Don
km4udx



Re: Version 5 ubitx microphone wiring

Dean Souleles
 

Mark,

The wiring on the jack and the wiring on the mic must match.  It differs based on what mic you are using and whether you are wiring it yourself.  Here is how I wired to connect to my Cobra/Uniden mic.  

MIC Wiring  -

(Cobra / Uniden)

Pin 1     Shield (ubitx mic ground)

Pin 2     Mic audio

Pin 3     Transmit control (PTT)

Pin 4     Receive control (not connected

Here is a link to some other mic wiring diagrams that might help:

https://myradiolab.com/cb-microphone-wiring/

Good luck,

73,
Dean
KK4DAS

Re: v6 cw wpm? #cw

timemeddler@...
 

okay got it. the courtesy tone is off, but I can live with that.

Version 5 ubitx microphone wiring

Mark Hansen
 

I have a V5 board in a Nextion case from Sunil. I have good cw output, but nothing on SSB. I noticed that the picture of the mic jack wiring I followed actually has the pins numbered differently than the supplied jack. 
The picture has pins 2 and 3 interchanged from the actual jack. So my brown and black wires are reversed. My PTT works fine, there is some hum and no audio. Should I go ahead and change my wiring to match the photo, or is there an error there? Thanks!