Date   
Re: Complainers?

Hans Summers
 

 
Hi Evan 
 

We have not seen the final results of the QSX (I think that is the unit you mean) from Hans, G0UPL, only the material on the web pages.  You are also going to wait for the multi-band upgrade, as the first kits will be single band.


 

One point for me is the ability to add the Nextion type of display to the uBitx.  I have ordered the v5 board, am already planning to mod the current KD8CEC code to work with the v5 board, assuming someone else doesn't do it first.  I have 2 v4 boards, one with a Nextion display.   I have gotten spoiled with the features of the KD8CEC software/graphics screen.  Not sure how that is possible with the QSX. 


QSX has CAT control and also a rich command interface of its own. It will not be difficult for someone to design an external controller for it with more expensive deluxe display. 

73 Hans G0UPL

Re: Spurs/Harmonics fixes for v4 based on v5 board design?

 

Hi,

You can try playing a 2-tone audio file on your cell phone.  I made a 30s 700Hz + 1900Hz mp3 and will attach it here.

73,


Mark.

BitX-40 mobile #ssb #bitx40

Robert D. Bowers
 

I've finally gotten the noise problem with my BitX-40 down to where it's not too bad, and I think with some additional work, I can eliminate the little is left.

My setup:  BitX-40 with homemade bugcatcher antenna (total height about 7 ft, much more and I get clobbered by tree limbs), in a GMC Safari van (1996).  The audio runs into a JPS NIR-10 which provides DSP noise filtering, strong AGC, and greater audio.

When I first started, I was having a real fit with alternator whine AND very loud spark plug noise when the engine was running - making using my BitX-40 impossible except if I stopped and turned off the motor.

I found that I could eliminate most of the alternator whine with a big iron-core choke, but the ignition noise was horrendous.  It seemed to come in through the antenna, but I found out that wasn't the case - putting filtering on the coax did nothing.  The choke made some difference, suggesting that the noise was actually coming from elsewhere.

I couldn't find the source, so I decided to change from connecting to the harness for power, to going to the battery.  I set up and installed a power lead running from the battery connection on the external fusebox (which has a 3/8 copper cable running to the battery) - the lead had a strong noise filter built in, and I used some old RG58 coax to supply power (with a fuse and another choke at the battery).  While running this lead, however, I discovered that the cover for the motor was actually fiberglass, and for shielding they'd just put heavy aluminum foil on the inside.  I also found where they'd attached a grounding point, but they grounded the cover through the wiring harness - the actual ground was located (I think) at the internal fuse box, a couple of feet away or so.  I added a nice thick copper ground straight from the ground point to the frame of the van.

This eliminated the original problem, but a new one cropped up.  The alternator whine was back but only in the NIR-10 (although not very loud) - even with the radio turned off, the NIR-10 would pick up the alternator noise and a tiny bit of the spark plug noise whenever I connected it to the radio.  I added additional ground wires to the Bitx40, and so far have done just about everything I can think of.  I'm going to change the power wiring for the radio, so that both the filter and the BitX-40 run from the same connection, to see if I can completely eliminate the noise.

The points to take from this are:
(1) make sure ALL of the shielding is in place and properly bonded, with shortest possible paths to ground, if you want to eliminate ignition noise.  One crazy bad connection can really screw things up!  (Even if it was grounded, taking the ground from the wiring harness rather than from the nearest part of the frame was not a good idea!)
(2) You should tap the 12v at the battery, a nice very low impedance point - tapping in at the fuse box may introduce noise.
(3) Be aware of lead dress - it can be very important.
(4) Ground, ground, ground!!!  adding additional ground wires internally helped, but the biggest improvement came from adding the short (6 inch) piece of very thick copper wire from the frame (steel) to the grounding point on the engine cover.

I will add a final question.  The Raduino code is version 1.20, the tuning is via a 10 turn pot, and when you hit the endpoints of the pot, the Raduino starts counting up/down, changing the section of the spectrum covered by the pot.  I'd like to mod that so that I have to push a button to enable the band-section change.  I'd also like to have frequency lock.  I haven't found instructions for that Raduino and the code - how to manipulate it.  Where can I find instructions, and whose version might it be?

Thanks - and I hope these tips (and telling about my experiences) help someone!

Bob
N4FBZ

Re: Complainers?

Evan Hand
 

Hans,
Thanks for the information!

I do plan on buying a QSX, so will have first hand experiences with the uBitx v4, v5 AND the QSX when available.  Really looking forward to when you have the QSX finished and we are able to order the kit.  I am monitoring the QRPLabs Group.io reflector as well as this one.

Again, waiting anxiously for the QSX.  Seems like it will be a really fun kit.

73
Evan
AC9TU   

Re: No TX #ubitx

Evan Hand
 

In reading the thread from the beginning, I interpret the problem as one of getting a CW signal at normal power (10 watts).  What you are seeing is the equivalent of the PTT button pressed with no input to the audio.   If this is a correct interpretation of the problem, then I would look at the first mixer as a starting point.  Verify that you have the correct frequency at TP12 with the key down, and then that you have the 5 volt CW-Key signal at R104.  That is the start of the CW transmitter, outside of the LO on the Raduino (which is why I suggested testing for the Clock#2 signal at TP12).

Since you have reported that the signal can be heard on another radio, I doubt that the si5351 in the Raduino is the issue.  It could be that you zapped the I/O on the nano and are not getting the 5 volts needed to unbalance the mixer, or that there is an issue with the wiring between the CW-Key and the mixer stage (you stated that you have done the L5/7 replacements).

Above are my recommendations, based on my interpretation of the data that I have, yours may vary.

73
Evan
AC9TU  

Re: antennas vs antennae

Jakobus van der Merwe
 

In my home language here in South Africa we call it " lug draad " . Direct translation into english it  translate to " air wire ". I suppose it is were you live.

--
Jakobus van der Merwe
zs6chk@...

Virus-free. www.avast.com

Re: BitX-40 mobile #ssb #bitx40

Vic WA4THR
 

Well done on the BitX40 mobile. I was, perhaps, lucky that only the alternator whine had to be handled in my case.

There is a hack on line for replacing the "end of rotation" frequency jumping with pushbuttons. Basically it adds resistors with pushbuttons to short them out to simulate that the max or min pot resistance has been reached. If you haven't done so already, upgrade to Allard's sketch. I think the latest for an unmodified BitX40 is 1.28 and with a very few simple and well illustrated additions such as a single resistor and lead to the raduino to detect when in transmit it allows A & B VFO selection, frequency scanning, VFO lock, etc. It also pretty much eliminates tuning clicks and allows you to adjust the span covered by the tuning pot.

You can get it at https://github.com/amunters/bitx40

Take a look at his well-written and illustrated notes where he shows what simple mods are needed for the specific features you want, but it runs fine with no mods at all.

=Vic=

Re: No TX #ubitx

Ted
 


Always happy to take measurements :)   Actually, there was a 10-watt measurement until there wasn't.  It was not, if I'm feeding this back accurately, a case of keying the mike and getting 10 watts of carrier as if it was CW.  Please correct me if I read that wrong.

The IRG510's being subject to easy grounding failure, it was an obvious possibility though denial runs strong as the evening runs late and when this kind of transgression wasn't seen by eye.  I had jostled the poorly-stabilised mainboard, with Raduino and 2X20 display attached, all inverted. The quagmire that is my "bench" could have grabbed something [such as final heat-sinks] for all I know.


Ted
K3RTA

Re: antennas vs antennae

mrz80
 

On 2/11/19 5:38 AM, Jakobus van der Merwe wrote:
In my home language here in South Africa we call it " lug draad " . Direct translation into english it  translate to " air wire ". I suppose it is were you live.
You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat. -- Albert Einstein,explaining radio

--
------------------------------------------------------------------------
Bruce H. McIntosh @mrz80 www.afn.org/~scotsman WA4UF
------------------------------------------------------------------------
Network geek with a strong affinity for Telecasters

Upgrades and backward compatibility

BruceN
 

UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL

Re: antennas vs antennae

Jerry Gaffke
 

Not only do all you guys spell "aerial" wrong, you also propagate badly butchered misquotes
and give them seemingly random attributions.  Though there is precedent:
    https://quoteinvestigator.com/2012/02/24/telegraph-cat/

Jerry


On Mon, Feb 11, 2019 at 05:20 AM, mrz80 wrote:
On 2/11/19 5:38 AM, Jakobus van der Merwe wrote:
In my home language here in South Africa we call it " lug draad " . Direct translation into english it  translate to " air wire ". I suppose it is were you live.
You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat. -- Albert Einstein,explaining radio

--

Re: Upgrades and backward compatibility

Jerry Gaffke
 

I believe the only changes on v5 that impact compatibility are the move from
a 12mhz crystal filter to 11.059mhz, and how the LPF relays get switched.
Those changes could easily be accommodated by a #define at the top of the source code.

If there was some IO pin with an extra pullup on v5 that the Raduino could read,
we could have the same compiled code.  But I suspect that is not the case.

Jerry, KE7ER


On Mon, Feb 11, 2019 at 06:21 AM, BruceN wrote:
UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL

Re: BitX-40 mobile #ssb #bitx40

Jerry Gaffke
 

One thing  Allard's sketch does that the stock code does not do
is avoid random jumps in frequency of 50hz due to noise in the signal from the tuning pot.
Gets old quick.  So once the rig is working, update to Allard's sketch.

Jerry


On Mon, Feb 11, 2019 at 02:50 AM, Vic WA4THR wrote:
Well done on the BitX40 mobile. I was, perhaps, lucky that only the alternator whine had to be handled in my case.

There is a hack on line for replacing the "end of rotation" frequency jumping with pushbuttons. Basically it adds resistors with pushbuttons to short them out to simulate that the max or min pot resistance has been reached. If you haven't done so already, upgrade to Allard's sketch. I think the latest for an unmodified BitX40 is 1.28 and with a very few simple and well illustrated additions such as a single resistor and lead to the raduino to detect when in transmit it allows A & B VFO selection, frequency scanning, VFO lock, etc. It also pretty much eliminates tuning clicks and allows you to adjust the span covered by the tuning pot.

You can get it at https://github.com/amunters/bitx40

Take a look at his well-written and illustrated notes where he shows what simple mods are needed for the specific features you want, but it runs fine with no mods at all.

=Vic=

Re: Complainers?

MVS Sarma
 

Yes Donald, ver1.3 came up after one designer became SK
I use both.
regards
 sarma 
vu3zmv


On Mon, 11 Feb 2019, 1:48 am Donald <donwestpwl@... wrote:

I use Mini Ring Core Calculator. It calculates length of wire and maximum wire size in AWG or mm units (your choice), for most Amidon cores, both iron and ferrite. It also lets you enter the number of turns and shows you the inductance and reactance for a given number of turns on a given core at a given frequency, so you can see what happens if you add or remove a turn. It will also calculate air core coils. Also has a resonance calculator for LC values, and can tell you inductance of a straight piece of wire. I use version 1.2, but see there is a newer version, now.

Free, from here:

http://www.dl0hst.de/mini-ringkern-rechner.htm

Very handy for me. -- Donald, KB5PWL


On 2/10/2019 1:46 PM, Evan Hand wrote:
There is a web page that calculates inductance AND wire length needed with 1" leads.  It is here:
https://toroids.info/
or
http://coil32.net/online-calculators/ferrite-torroid-calculator.html

If that is not what you want, then a quick search on google or other search engine should get you what you want.

73
Evan
AC9TU

Re: Upgrades and backward compatibility

Jim Sheldon
 

As for The Skonk Worx, our plan is to support firmware for both the V3/V4 boards as we do now, and a separate of set of firmware to cover the new V5 as soon as we get a V5 board (on the way)  Sort of hard to test software to handle the new changes such as different switching sequence for the relays and the new IF frequency which is reported by Farhan at 11.059 MHz without the actual production board to work with.

Our Raduino Clone board is still electrically compatible with all versions if Farhan's V5 schematic is correct as it appears there are no wiring changes on the main board connectors for the Raduino.  That means our BITeensio board is also wiring compatible and only the software need be changed. 

As I said, the Raduino Clone board should work right off with a properly programmed Nano.  We will still supply it for the V3/V4 boards, but Farhan has published the firmware for V5 Raduino's and you can reprogram the Nano's yourselves.  Pin for pin, the main plug-in should be compatible but the Low Pass Filter selection relays switch in a different sequence on the V5 boards and the IF is 11.059 MHz (not 12.000 MHz) on the V5's.  Since both are controlled by the NANO's firmware (Teensy 3.6 in the case of the BITeensio) a program change SHOULD be all that is necessary for either board.

Jim Sheldon, W0EB
Triumvirate Skonk Worx
Project Coordinator

------ Original Message ------
From: "BruceN" <k4tql@...>
Sent: 2/11/2019 8:21:45 AM
Subject: [BITX20] Upgrades and backward compatibility

UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL

Re: No TX #ubitx

Jerry Gaffke
 

Ted,

All sounds good.

If there is no increase in received signal when the key is pressed while holding the rx antenna wire near C80
then it may well be your new pot.  I suggest you short across the pot to disable the mod.
I would expect signal levels going into the power amp to increase dramatically when the key is pressed.

Shorting the IRF510 heatsinks to ground can blow traces and fuses and L8,L9.
But should not blow the IRF510's.
If the power supply was down around 12v, the finals won't blow unless they get too hot for some reason.
Perhaps continuously transmitting in some digital mode, or loose heatsinks, or no air circulation or ...

You might verify that the BNC connector supplied in the kit is working for you.
Some were not properly machined, and the center pin from your coax may not be making contact.
Plug in a short piece of coax, measure from the center pin of the far end to pin 2 of P2 where the
antenna lead enters the main board, jiggle the coax a bit and make sure that connection remains near zero ohms.

And no, this is not a case of incompatible 75 ohm connectors being kitted up by hfsignals.
The ones supplied have the build of a 50 ohm BNC connector, and there would be no issue with using a 75 ohm
BNC socket with a 50 ohm BNC connector on your coax anyways.  (Unless operating at 100+ MHz)

Jerry, KE7ER



On Sun, Feb 10, 2019 at 08:57 PM, Ted wrote:
The finals were my first assumption, though I would have thought I'd get RF zooming around the room enough to be heard while holding a foot or so of wire to C80, et al.   I'll order spares for stock and try them of course.


Thanks.


----------------------
Jerry,

R104 is a 2.2k that, if increased in value, drops the CW power level. I added a trimmer in series with this and it allows a suitably stable CW power setting of my choice, independent of SSB power out.  Raj suggested that to me a while back and unless this is killing my finals, it seems like a plan to look at for those wanting to control current consumption on battery power or work true QRP. Mine was set to 4 watts.

Re: Upgrades and backward compatibility

Alan de G1FXB
 

Bruce,
Version 5 is the new kid on the block, like REALY new it was only launched last Monday(?)
ALL the upgrades offered by folks would have being developed and offered for uBiTX V3/4 so you are not in danger of having obsolete hardware.
It's the V5 owners who temporarily out of the development loop, but equally unlikely to be orphaned given the numbers that are likely to be sold in the future.
It would be short sighted not to provide for them in some way.


Farhan it seems deliberately did the minimum of changes so maintain backward compatibility physical and electrically as possible but these two areas were beyond compromise.
The future will reveal who are the ones who provides the revisions to the changed IF freq & Band switching, they not large changes that effect the firmware.
Ideally the original developers who can perhaps integrate a question at very first power up to ask the user which version hardware have they, and pre enter the correct factory default settings.
Equally someone more proficient at arduino stuff than me could probably look at the existing code and say Ahh Yes.......


(The V5 announcement was https://groups.io/g/BITX20/message/64771 if you have not seen the details.)

Alan

On 11/02/2019 14:21, BruceN wrote:
UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL

Re: Being, living and serving others; this is not blind faith!

Don - KM4UDX
 

I have a V4. Lots of little mods. Bigger heat sinks, dual power rails (12v board and 15v finals), cec software (which is wicked good), and a 3.5 nextion display (which, for ~$30 make the radio a totally different beast), separate 5v for the display. 

But it is interesting.  Without getting too philosophical, my interaction with the radio is 95% via CAT control with FLDIGI, Wsjtx, js8call in the laptop. So I don’t use big screen or the original 16x2 display. In fact, I burned up the first 3.5 display, and I had given away the 16x2, so I had NO display. It was a bit weird, but the laptop app didn’t care, and after a few minutes of displayless operations having fun with Olivia (a great digital mode), I didn’t care. I realized that the radio display was the laptop. The radio is really just a USB device  .   Push it into the back, get it out of the way, and just play radio. Which given the lack of esthetics of my “Frankenstein-uBITX” mash up, keeping it in the dark is not all a bad idea. Hahah. 

Re: Upgrades and backward compatibility

Scott McDonald
 

Jim, how much work would it be to just add the IF selection and filter switch points as an option in the program so a Biteensio could just be moved back and forth between boards?

I ask because both SDR kits and QRP Labs have some agility built into their software letting you adjust filter switch points and IF frequencies from the menu for single conversion stuff, and it really facilitates experimentation and swapping RF hardware and the display/Arduino/Si boards.

I realize it’s a ton of work to program lots of options in, but maybe v4 to v5 could be built in?  This would be a big help to relatively inexperienced guys as well as those of us that enjoy working with the rf side more than the Arduino side.

Thanks, Scott Ka9p

Make something good happen!

On Feb 11, 2019, at 6:50 AM, Jim Sheldon <w0eb@...> wrote:

As for The Skonk Worx, our plan is to support firmware for both the V3/V4 boards as we do now, and a separate of set of firmware to cover the new V5 as soon as we get a V5 board (on the way)  Sort of hard to test software to handle the new changes such as different switching sequence for the relays and the new IF frequency which is reported by Farhan at 11.059 MHz without the actual production board to work with.

Our Raduino Clone board is still electrically compatible with all versions if Farhan's V5 schematic is correct as it appears there are no wiring changes on the main board connectors for the Raduino.  That means our BITeensio board is also wiring compatible and only the software need be changed. 

As I said, the Raduino Clone board should work right off with a properly programmed Nano.  We will still supply it for the V3/V4 boards, but Farhan has published the firmware for V5 Raduino's and you can reprogram the Nano's yourselves.  Pin for pin, the main plug-in should be compatible but the Low Pass Filter selection relays switch in a different sequence on the V5 boards and the IF is 11.059 MHz (not 12.000 MHz) on the V5's.  Since both are controlled by the NANO's firmware (Teensy 3.6 in the case of the BITeensio) a program change SHOULD be all that is necessary for either board.

Jim Sheldon, W0EB
Triumvirate Skonk Worx
Project Coordinator

------ Original Message ------
From: "BruceN" <k4tql@...>
Sent: 2/11/2019 8:21:45 AM
Subject: [BITX20] Upgrades and backward compatibility

UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL

Re: Upgrades and backward compatibility

Jim Sheldon
 

Don't know yet-- My V5 board has been shipped but DHL tracking shows it has left Bangalore, India Sunday.  It's somewhere between Bangalore India and Kansas.  Until I get the board and am able to run experiments on it, I won't have a definitive answer to that and won't comment further on it until positive confirmation that the V5 board IS electrically compatible on a pin for pin basis with the BITeensio.  Speculation right now is just that, speculation.  

Rest assured I'll post additional information as I get it. 

We already have a version for the BITeensio that can switch the IF frequency to anything you want from back when we were trying to come up with a plug in CW filter for the V4 boards (never managed that) so the IF switch be any trouble and it's possible we'll leave the ability to change IF frequencies in the Calibration section of the software.  Hopefully the software for switching the relays can be set up with the ability to just comment out and uncomment the changes you want or possibly even a menu item that will allow selecting which board it's plugged into..  Not promising anything yet UNTIL we get the board to check.  It would NOT be prudent to release anything or say something can be done without first testing it.  Please understand that.

Jim - W0EB
TSW Project Coordinator

------ Original Message ------
From: "Scott McDonald via Groups.Io" <ka9p@...>
Sent: 2/11/2019 9:15:40 AM
Subject: Re: [BITX20] Upgrades and backward compatibility

Jim, how much work would it be to just add the IF selection and filter switch points as an option in the program so a Biteensio could just be moved back and forth between boards?

I ask because both SDR kits and QRP Labs have some agility built into their software letting you adjust filter switch points and IF frequencies from the menu for single conversion stuff, and it really facilitates experimentation and swapping RF hardware and the display/Arduino/Si boards.

I realize it’s a ton of work to program lots of options in, but maybe v4 to v5 could be built in?  This would be a big help to relatively inexperienced guys as well as those of us that enjoy working with the rf side more than the Arduino side.

Thanks, Scott Ka9p

Make something good happen!

On Feb 11, 2019, at 6:50 AM, Jim Sheldon <w0eb@...> wrote:

As for The Skonk Worx, our plan is to support firmware for both the V3/V4 boards as we do now, and a separate of set of firmware to cover the new V5 as soon as we get a V5 board (on the way)  Sort of hard to test software to handle the new changes such as different switching sequence for the relays and the new IF frequency which is reported by Farhan at 11.059 MHz without the actual production board to work with.

Our Raduino Clone board is still electrically compatible with all versions if Farhan's V5 schematic is correct as it appears there are no wiring changes on the main board connectors for the Raduino.  That means our BITeensio board is also wiring compatible and only the software need be changed. 

As I said, the Raduino Clone board should work right off with a properly programmed Nano.  We will still supply it for the V3/V4 boards, but Farhan has published the firmware for V5 Raduino's and you can reprogram the Nano's yourselves.  Pin for pin, the main plug-in should be compatible but the Low Pass Filter selection relays switch in a different sequence on the V5 boards and the IF is 11.059 MHz (not 12.000 MHz) on the V5's.  Since both are controlled by the NANO's firmware (Teensy 3.6 in the case of the BITeensio) a program change SHOULD be all that is necessary for either board.

Jim Sheldon, W0EB
Triumvirate Skonk Worx
Project Coordinator

------ Original Message ------
From: "BruceN" <k4tql@...>
Sent: 2/11/2019 8:21:45 AM
Subject: [BITX20] Upgrades and backward compatibility

UbitX is now up to Version 5.  As I understand it, this version, or the software for it at least, is not backward compatible.  A great many V3 and V4 boards are out there and there have been many upgrades to software and hardware.  These upgrades, I suspect from reading the group, can be applied equally to V3 and V4.  As time goes on, I'm sure that software and hardware will be changed to accommodate the V5.  I would guess that it would be problematic for these "new" versions to be applicable to V3 and V4.

So, the question is, will versions of these later upgrades (KD8CEC, The Skunk Works, JackAl, etc) be produced for V3/V4 or will these earlier boards become orphans in this respect.  I have a V3 and I intend to purchase a V5 or later edition (I have separate applications for these rigs).  I would like to know that I can use them interchangeably and keep both up to date.

Bruce Nebergall, K4TQL