Date   
rotary encoder

dave
 

hi guys anyone know where i can get a new rotary encoder  for my ubitx v5  or how to test the existing one

Re: Manual for v5 #v5

Curt
 

James

if it was purchased recently, and has a LCD on its raduino - its likely a V5.  the frequency on the xtals in the large IF filter are another clue. 

a key modern trend is to not ship manuals via paper or CD anymore - much more economical to download these. 

also - you might react a bit by the minimal nature of the manual.  some sweat equity in thought is required.  but enough clues are available for successful assembly (aka wiring up the board with connectors). 

a key decision point is what enclosure you will employ.  if you provide your own - there should be enough connectors available to build your ubitx.  key advantage of v5 is that its spurious should be low enough, not needing the substantial mods of v3/v4.  it should be a nice rig when you get it assembled - enjoy the assembly journey - and explore how you wish to shape this into the rig you prefer (display type, accessories integrated - or not).  its a very nice rig even in stock form or nearly so as in my case thus far. 

one final thought - a little frustration seems universal in building a uBitx.  hang in there and enjoy the ride.  if you are really wondering 'where the case will come from' - check out amateurradiokits.in or use your search engine to find other suppliers. 

welcome aboard!

73 Curt

Re: ubitx #v6 Screen Speed Mod #v6

Ashhar Farhan
 

Reed,
I am travelling, can't wait to try this out!

- f

On Thu 2 Jan, 2020, 10:33 AM Reed N, <greenkid336600+groupsio@...> wrote:
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: Manual for v5 #v5

Jim Willis
 

Hi James,

 

The docs are on-line. Try https://www.hfsignals.com/index.php/ubitx-wire-up/ first then surf around from there.

 

73,

 

KX4TD

Jim

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of James Giercyk
Sent: Thursday, January 2, 2020 10:26 AM
To: BITX20@groups.io
Subject: [BITX20] Manual for v5 #v5

 

I received a uBitx v5 (I think!) as a gift for Christmas.  There was no documentation of any kind with it.  Just a board and some parts in a plastic box.  I find that a little strange, and in reading some of the older messages posted here, it appears that there should be an assembly manual.  I believe it's v5 but I've got no way to identify it as the board does not have a version silk screened on it.  I do not see any way to contact the manufacturer, and a google search sent me here for support.

I've very disappointed, and I'm just about ready to throw the whole thing in the trash.  Should there be a manual, and if so how can I get it?

Manual for v5 #v5

James Giercyk <jim@...>
 

I received a uBitx v5 (I think!) as a gift for Christmas.  There was no documentation of any kind with it.  Just a board and some parts in a plastic box.  I find that a little strange, and in reading some of the older messages posted here, it appears that there should be an assembly manual.  I believe it's v5 but I've got no way to identify it as the board does not have a version silk screened on it.  I do not see any way to contact the manufacturer, and a google search sent me here for support.

I've very disappointed, and I'm just about ready to throw the whole thing in the trash.  Should there be a manual, and if so how can I get it?

Re: Future Ubitx, SWR layout lines on PCB.

Ashhar Farhan
 

I would imagine the best alternative is to have it outboard. The main challenge is that we don't have enough analog lines from arduino to measure and control.
Not much activity in 10 in india at all, 6m even less.

- f

On Thu 2 Jan, 2020, 8:00 PM MVS Sarma, <mvssarma@...> wrote:
Such thing, if orovided has to be shielded as otherwise internal radiation might pose problem.
I recall numan cb q40  rf multimeter where the use copper rods inside a shielded chamber. It has operational range from 150khz to hf and vhf even .

Sarma vu3zmv

On Thu, 2 Jan 2020, 7:42 pm ajparent1/kb1gmx, <kb1gmx@...> wrote:
Fred,

Seriously?   Adding a stripline SWR requires space on the board that does
not exist and it must have a ground plane under it.  However many vendors
sell modules that can be added externally for SWR measurement.  No matter
that it must be after the low pass filters on the board.

Right now a dual band rig for 6 and 10 is unreasonable as there is no
market for it.  Maybe as we near the peak of the sunspot cycle in 5 years.
Also to put a rig on VHF the standards for spurs and harmonics have to be
much better.  The finals are not as much an issue as everything leading
up to them.  It would require a RF amp for RX as while sensitive enough for
general HF 10M and 6M have lower background noise and need greater
sensitivity.

Generally the uBitx is a minimal radio with a minimal cost.  It seems a regular
and recurring theme that for your 150$ you want everything that your
1000++$ radio has, maybe more.

Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO

Re: ubitxV6 Bricked? #v6

Evan Hand
 

I have had similar issues with a Raspberry PI, That turned out to be a cable issue: The wire gauge was too small/ wire too long to supply the current without dropping the voltage below the required value.  You could try using the shortest and thickest usb cable to see if that helps.

FWIW
73
Evan
AC9TU

Re: Future Ubitx, SWR layout lines on PCB.

MVS Sarma
 

Such thing, if orovided has to be shielded as otherwise internal radiation might pose problem.
I recall numan cb q40  rf multimeter where the use copper rods inside a shielded chamber. It has operational range from 150khz to hf and vhf even .

Sarma vu3zmv

On Thu, 2 Jan 2020, 7:42 pm ajparent1/kb1gmx, <kb1gmx@...> wrote:
Fred,

Seriously?   Adding a stripline SWR requires space on the board that does
not exist and it must have a ground plane under it.  However many vendors
sell modules that can be added externally for SWR measurement.  No matter
that it must be after the low pass filters on the board.

Right now a dual band rig for 6 and 10 is unreasonable as there is no
market for it.  Maybe as we near the peak of the sunspot cycle in 5 years.
Also to put a rig on VHF the standards for spurs and harmonics have to be
much better.  The finals are not as much an issue as everything leading
up to them.  It would require a RF amp for RX as while sensitive enough for
general HF 10M and 6M have lower background noise and need greater
sensitivity.

Generally the uBitx is a minimal radio with a minimal cost.  It seems a regular
and recurring theme that for your 150$ you want everything that your
1000++$ radio has, maybe more.

Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO

Re: Future Ubitx, SWR layout lines on PCB.

ajparent1/kb1gmx <kb1gmx@...>
 

Fred,

Seriously?   Adding a stripline SWR requires space on the board that does
not exist and it must have a ground plane under it.  However many vendors
sell modules that can be added externally for SWR measurement.  No matter
that it must be after the low pass filters on the board.

Right now a dual band rig for 6 and 10 is unreasonable as there is no
market for it.  Maybe as we near the peak of the sunspot cycle in 5 years.
Also to put a rig on VHF the standards for spurs and harmonics have to be
much better.  The finals are not as much an issue as everything leading
up to them.  It would require a RF amp for RX as while sensitive enough for
general HF 10M and 6M have lower background noise and need greater
sensitivity.

Generally the uBitx is a minimal radio with a minimal cost.  It seems a regular
and recurring theme that for your 150$ you want everything that your
1000++$ radio has, maybe more.

Allison
---------------------------------
No direct email, it goes to bit bucket due address harvesting in groups.IO

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