Date   
Awaiting for µBITX #ubitx-help

Przemek
 

Hi Everyone!
I'm radioamateur from Poland and now waiting for µBITX (is already in Poland at the customs office). 
I read the article on ubitx.net and I wonder if there are any topics here that I should read. 
And I would forget if there are any users from Poland here? 
Greetings from Poland
Przemek SQ6PNO
73!

Veron's Day of the Amateur in the Netherlands

Cor Beijersbergen
 

Yesterday at the Day of the Amateur I spotted two beautifully executed samples of the Ubitx.

 

Cor – PA4Q

 

One by PA0MBE:

 

 

Afbeelding met elektronica, circuit

Automatisch gegenereerde beschrijving

 

 

 

And one by PH2LB:

 

 

Re: Downloading firmware

Stig oz8pz-oz8wsp-oz8wsr
 

Hi Mike, i would also be happy for a step by step help to Update.
My mail adr. is   scp.leerbeck@...
Thank you.
Stig, oz8pz, oz8wsp for tx wspr and oz8wsr for rx wspr

Sendt fra min iPad

Den 3. nov. 2019 kl. 00.46 skrev Mike Kilpatrick <mike.kilpatrick@...>:



To the original person who asked the question:

 

The simple answer is “No”.  You need to have some form of software on your computer to enable communication with the Arduino Nano in your uBitx.

If you email me at mike.kilpatrick@... I can send you step by step instructions that will make it very easy.

 

I tried to send them to your email address as shown at the header on your question but it bounces back.

Mike

VK2DJP

 

From: yrralguthri@...
Sent: Saturday, November 2, 2019 09:42
To: BITX20@groups.io
Subject: [BITX20] Downloading firmware

 

Are there files I can simply copy to a thumb drive and connect this thumb drive to the ubitx and allow it to update?

I'm not understanding the procedures I see on the ubitx sites on how to update the firmware.  I've just bought and wired a ubitx, it works, but I would like to update it to the KD8CEC firmware that works with the standard two-line display.  

 

<CD6F33A6F98E46B49B05802F60FD9A2A.png>
<A1311CB6E7B24E90AD25D4E54EE2C8B6.png>

MVS Sarma
 

Somehow the new version is not intslling on my 64 bit win 7 laptop .

Incidentally one could hombrew vk3bhr lc meter 2 using pic16f628a.

It works well, i have been using it for a decade now.

Sarma vu3zmv


On Sun, 3 Nov 2019, 2:18 am , <DF1EA@...> wrote:
Hello,

this tool can help http://www.dl0hst.de/dateien/software/minirk13_install.zip

73 de Chris, DF1EA

circular.simetry@...
 

hello, i am using nextion display on my ubitx and i have the spare pins free from my other display, i want to use them for iambic keyer insted of A6 with resistors. can anyone help me with the changes in the code to use separately pins for dot and dash? Thanks in advance

Re: ubitx v5 receive problem

pd0zz@...
 

Then there is the AGC, as built by VK3YE... https://www.youtube.com/watch?v=GdpOkjETtw8
Three enhancements, easy built, easy incorporated, and your uBITx V5 works like a far more expensive rig...

Happy ubitxinging

Op 2-11-2019 om 16:39 schreef howard winwood G4GPF:
Thanks for that Curt, sounds logical, why did I not think of that!!!!
I would have thought that bfo would be something they set at factory, but obviously not. Frequency set up was spot on so didn't think to check bfo settings. Will have a play when I get a minute.
Thanks once again
G4GPF

On Sat, 2 Nov 2019, 15:30 Curt via Groups.Io, <wb8yyy=yahoo.com@groups.io> wrote:
Howard

I don't have any v5 experience but sounds like your BFO calibration may be off. Note the positioning of this oscillator relative to the crystal filter determine what is heard, I imagine it is the issue. Instructions on bfo calibration are around, but use something provided for v5. It should sound nice when properly adjusted.

Your makeshift antenna should receive fine on lower bands, but may be insensitive on some higher bands.

Curt

Virusvrij. www.avast.com

Re: Downloading firmware

Mike Kilpatrick
 

To the original person who asked the question:

 

The simple answer is “No”.  You need to have some form of software on your computer to enable communication with the Arduino Nano in your uBitx.

If you email me at mike.kilpatrick@... I can send you step by step instructions that will make it very easy.

 

I tried to send them to your email address as shown at the header on your question but it bounces back.

Mike

VK2DJP

 

From: yrralguthri@...
Sent: Saturday, November 2, 2019 09:42
To: BITX20@groups.io
Subject: [BITX20] Downloading firmware

 

Are there files I can simply copy to a thumb drive and connect this thumb drive to the ubitx and allow it to update?

I'm not understanding the procedures I see on the ubitx sites on how to update the firmware.  I've just bought and wired a ubitx, it works, but I would like to update it to the KD8CEC firmware that works with the standard two-line display.  

 

DF1EA@...
 

Hello,

this tool can help http://www.dl0hst.de/dateien/software/minirk13_install.zip

73 de Chris, DF1EA

Ian Reeve
 

The spacing between turns,the number of turns,the wire diameter and the type of torrid all have an effect on the inductance. I use one of the "cheap" inductance meter and the readings are very close to a instrument costing nearly £100 so for me the inexpensive   one is good.


From: BITX20@groups.io <BITX20@groups.io> on behalf of hickmodawg@... <hickmodawg@...>
Sent: Saturday, November 2, 2019 8:05:28 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] ubitx LPF #bitx20 #bitx20help #bitx40 #bitx40help #ubitx #ubitx-help
 

Why not use the online calculators to get an estimate of the number of turns we need, and then use an inexpensive meter to fine-tune the number and arrangement of windings before installing the toroid on the board?  I got a cheap LC100-A meter on EBay that measures inductance and I was a little shocked to see how the inductance values of my toroids changed just from moving the windings closer or farther apart, not just from adding or subtracting winds.  It seems to me, that the size and composition of the toroid, and the spacing of the windings may have an effect on the resulting inductance, not just the number of windings.  I’m really still quite new to this, but, I’m wondering, why not use a meter before installing our toroids onto the board?  Is it because these cheap meters are very inaccurate?
Martin, AJ6CL

Re: uBitx V3 low power continues

Ted
 

On Fri, Nov 1, 2019 at 10:18 PM, ajparent1/KB1GMX wrote:
However there are two IF amps that can be all sorts of wrong
and the alignment of the oscillators as well.
I'd be happy to take a look, if in had an idea what one should be measuring at which points.   

Ted

Re: uBitx V3 low power continues

Ted
 

I do have an oscilloscope handy. What would you like me to look at?  


- Ted
  K3RTA

hickmodawg@...
 

Why not use the online calculators to get an estimate of the number of turns we need, and then use an inexpensive meter to fine-tune the number and arrangement of windings before installing the toroid on the board?  I got a cheap LC100-A meter on EBay that measures inductance and I was a little shocked to see how the inductance values of my toroids changed just from moving the windings closer or farther apart, not just from adding or subtracting winds.  It seems to me, that the size and composition of the toroid, and the spacing of the windings may have an effect on the resulting inductance, not just the number of windings.  I’m really still quite new to this, but, I’m wondering, why not use a meter before installing our toroids onto the board?  Is it because these cheap meters are very inaccurate?
Martin, AJ6CL

Re: ubitx v5 receive problem

pd0zz@...
 

My 2 cents... Do you have a real strong MW radiostation near you? In that case it would be advisable to install a special filter onto the motherboard. Look at this small BCI-filter...
https://www.youtube.com/watch?v=fgQenFJOjr4

Furthermore a BFO tune-up as described by VK3YE is very advisable...
https://www.youtube.com/watch?v=sXJmAhpAjeI

Happy ubitx-ing!

Op 2-11-2019 om 15:40 schreef howard winwood:
just completed my ubitx v5 built into a ready made case, everything went together as expected, on switch on, nothing from speaker but headphones ok. found a short across the speaker terminals on the front panel circuit board (my fault!).
receive sounds very noisy, when a long wire is connected (not a proper antenna yet....) I get a massive increase in noise, very hard to distinguish stations even with volume control turned down. Also find it difficult to tune into a ssb contact.
I have an old home made tx/rx (about 40 years old) that picks up signals much better with almost no noise on same piece of wire than ubitx and tunes into ssb signal very easily on its analogue vfo, compared to ubitx.
is this normal for ubitx or do I have a problem?
Ubitx is supposed to have a sensitive receiver but due to the high noise level does not seem as sensitive as my old rig who's arial input goes straight into a diode ring mixer.
anyone have any ideas please?

Virusvrij. www.avast.com

Re: ubitx v5 receive problem

howard winwood G4GPF
 

Thanks for that Curt, sounds logical, why did I not think of that!!!!
I would have thought that bfo would be something they set at factory, but obviously not. Frequency set up was spot on so didn't think to check bfo settings. Will have a play when I get a minute.
Thanks once again
G4GPF

On Sat, 2 Nov 2019, 15:30 Curt via Groups.Io, <wb8yyy=yahoo.com@groups.io> wrote:
Howard

I don't have any v5 experience but sounds like your BFO calibration may be off. Note the positioning of this oscillator relative to the crystal filter determine what is heard, I imagine it is the issue. Instructions on bfo calibration are around, but use something provided for v5. It should sound nice when properly adjusted.

Your makeshift antenna should receive fine on lower bands, but may be insensitive on some higher bands.

Curt

Re: uBitx V3 low power continues

Ashhar Farhan
 

Ted,
The CW is generated independent of the IF and audio system. On the other hand the receiver is working, this rules out any problem in the RF mixer or the low pass filter. 
You must concentrate on the transmitter drivers and PA. The trouble is with those stages. Do you have access to an oscilloscope?

- f

On Sat 2 Nov, 2019, 6:44 PM Ted via Groups.Io, <k3rta=yahoo.com@groups.io> wrote:
Ashhar,

Yes, the receive is spectacular, with an added RFpreamp installed.  I can pick up whatever my Kenwood TS130S can hear. 

Please note the very low SSB modulation in comparison with a tune/CW note. I'd expect a fully-modulated "FIIIIIVVVE" to be aroud the same 'scope width as a CW note, give or take; my SSB is no more than about 25-30% of that with a compressor in line that had worked perfectly until I let the magic out somewhere along the way.

I was thinking "balanced mixer out of whack" or some such, though my theory isn't up to date.  Now, I asked about circuits prior to Q90 because this wide disparity between SSB peak envelope and CW occurs before that, hence my thought that the
problem could preceed this stage.

Thank you, sir, for any further thoughts on the subject.

Ted
K3RTA

Re: ubitx v5 receive problem

Curt
 

Howard

I don't have any v5 experience but sounds like your BFO calibration may be off. Note the positioning of this oscillator relative to the crystal filter determine what is heard, I imagine it is the issue. Instructions on bfo calibration are around, but use something provided for v5. It should sound nice when properly adjusted.

Your makeshift antenna should receive fine on lower bands, but may be insensitive on some higher bands.

Curt

ubitx v5 receive problem

howard winwood G4GPF
 

just completed my ubitx v5 built into a ready made case, everything went together as expected, on switch on, nothing from speaker but headphones ok. found a short across the speaker terminals on the front panel circuit board (my fault!).
receive sounds very noisy, when a long wire is connected (not a proper antenna yet....) I get a massive increase in noise, very hard to distinguish stations even with volume control turned down. Also find it difficult to tune into a ssb contact.
I have an old home made tx/rx (about 40 years old) that picks up signals much better with almost no noise on same piece of wire than ubitx and tunes into ssb signal very easily on its analogue vfo, compared to ubitx.
is this normal for ubitx or do I have a problem?
Ubitx is supposed to have a sensitive receiver but due to the high noise level does not seem as sensitive as my old rig who's arial input goes straight into a diode ring mixer.
anyone have any ideas please?

Re: uBitx V3 low power continues

Ted
 

Ashhar,

Yes, the receive is spectacular, with an added RFpreamp installed.  I can pick up whatever my Kenwood TS130S can hear. 

Please note the very low SSB modulation in comparison with a tune/CW note. I'd expect a fully-modulated "FIIIIIVVVE" to be aroud the same 'scope width as a CW note, give or take; my SSB is no more than about 25-30% of that with a compressor in line that had worked perfectly until I let the magic out somewhere along the way.

I was thinking "balanced mixer out of whack" or some such, though my theory isn't up to date.  Now, I asked about circuits prior to Q90 because this wide disparity between SSB peak envelope and CW occurs before that, hence my thought that the
problem could preceed this stage.

Thank you, sir, for any further thoughts on the subject.

Ted
K3RTA

Dave Dixon
 

hi curt,
            G3PCJ Walford electronics here in the uk has  produced a linear,mine and a friends use a 5 watt qcx to drive it up to 45 watts on 40 using a pair of irf 510s.but can be made for any band..regards Dave.


On Sat, 2 Nov 2019 at 03:15, Curt via Groups.Io <wb8yyy=yahoo.com@groups.io> wrote:
Thanks Allison for clariying. Based upon the message title, I am thinking the application here is a homebrew project. As for the exact number of watts, well enough is involved that I imagine merely a good irf510 amplifier is being sought. I think I recommended the best one around that uses a printed board.

73 curt

Re: Downloading firmware

Mike Kilpatrick
 

Give me a few hours to put something together as well as deal with family matters and I’ll get back to you.

 

Mike

VK2DJP

 

M & J Kilpatrick
8 Chablis Drive
Cessnock
NSW 2325

Phone: +61 411 153 548

 

From: mgassman@...
Sent: Saturday, November 2, 2019 12:21
To: BITX20@groups.io
Subject: Re: [BITX20] Downloading firmware

 

Mike,

I’m just about to start my build.  If you send an email with the instructions, would you mind copying me too please?

Thanks,

Mike
WA0YCN