Date   

Relay Board Mod for V3/V4 Harmonics

 

GE All,

 Kit-projects will be putting out Gordons outboard relay mod. I have put up a small pre-order to see the level of interest. Cost might seem high but we will be using quality parts.

I have boards on order already and will have more ready after the pre-orders ship.

https://shop.kit-projects.com/index.php?route=product/product&path=59&product_id=119

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!


Re: Project : Ubitx go box with batteries (topic will be updated upon works done)

Olivier Grand
 

et bien tant pis; c'est pourtant bien pratique
73 Olivier

Le mer. 28 août 2019 à 17:29, Adrien F4IJA <adrien.grelet@...> a écrit :
OK Thx Olivier, 

I don't think I'll want to use for now the spectrum nor the CW decode (I'm currently learning hard CW as I 'm a new ham and I hop to be ear ready in about a year!)

So I' ll continue on the standard 16x02 for now. 


Re: CAT control of uBITX

Mark Hatch
 

Sascha,

Thanks! When I get back to my ubitx (new 3d printer toy...), that will be the first thing!

Have both a 100ppr and a 24ppr.

73
Mark
AJ6CU


Re: ssm2167 board for compression #ubitx #ssm2167

John (vk2eta)
 

Hello Joe,

Some of us did have that issue and here the link to one solution:

https://groups.io/g/BITX20/message/57047

You can go back up to the  thread level from the post, but be aware I made a mistake in the initial post regarding the resistor value. The schematic is correct.

73, John


Re: ssm2167 board for compression #ubitx #ssm2167

Joe Puma
 

Are you getting feedback into your speaker when using this board? I seem to have that problem.

 

Joe

KD2NFC

 

Sent from Mail for Windows 10

 

From: n8yg via Groups.Io
Sent: Tuesday, August 27, 2019 7:51 PM
To: BITX20@groups.io
Subject: Re: [BITX20] ssm2167 board for compression #ubitx #ssm2167

 

Hi John, 
I understand completely. 
The value of pot I chose was 50k, and the adjustment point relative to ground is about 10K.. so 1/5 the voltage output of the microphone. Of course this adjustment is after the cap on the board so that I did not adjust the electret bias as well.. but I think you got that.  I found it difficult to solder to the pads without destroying them, but succeeded finally. I started laying out a board with these mods... but who knows if I'll ever get it done. :-) 

I will caution that I discovered that the noise gate and compression.. seem to have an interaction.. but the noise gate certainly works.. and as my good friend says about the compression now.. "Wow Brad that sounds as good if not better than your 100 W rig at 100 Watts"
BTW thanks for your inspiration for using this chip. It really makes the difference for sure. 
I read your notes.. but was frustrated with the compression making little difference between full compression and none.. Now.. there is a huge difference. 
I hope this helps... I have been hoping someone else would give it a try. 

73,
Brad N8YG

 


Re: ssm2167 board for compression #ubitx #ssm2167

n8yg
 

John..if you ate in the same adjustment range i was..i had the same results you are getting..but much better once i lowered the input level.  Anxious to hear about your results.  Thanks for giving it a shot OM.
73
Brad N8YG


Re: CAT control of uBITX

Don - KM4UDX
 

John -- I was in the same position. I had never updated an ardunio. But the benefits of KD8CEC's stuff was utterly compelling. So off the cliff I went. The "use case" for me was:
I was inept at the push button menu system in the stock firmware and yearned for a PC-type interface.
I wanted a bigger nextion screen (which is totally dreamy by the way)
Most of all I wanted to run wsjtx and fldigi, and CAT control was required for the digital mode operation.

To load the CEC firmware, you do not use memory manger. You use a little app that burns/updates/replaces/etc. the firmware into the aruduio.  For folks who work with aruduio's and the like, this is second nature. Totally natural like cream in the coffee.  For the rest of us. it is a total freak out.  You put the CEC firmware into the ubitx with a usb cable between the laptop and the min usb port on the arudio, and then use a tool like   XLoader.exe  to do the burn/update/replacement.  I was 100% sure I would destroy my beloved uBIX and create unfathomable and unrecoverable errors. But it worked fine after I solved the usual windows com port challenges. 

AFter XLoader has run and done the update, then tools like memory manager give you the pc like interface to the ubix.  Which is a revelation.  All the internal ubitx parameters are VERY easy to see and update. At last. 

Good luck and have fun.

Don
km4udx


Re: Project : Ubitx go box with batteries (topic will be updated upon works done)

Adrien F4IJA <adrien.grelet@...>
 

OK Thx Olivier, 

I don't think I'll want to use for now the spectrum nor the CW decode (I'm currently learning hard CW as I 'm a new ham and I hop to be ear ready in about a year!)

So I' ll continue on the standard 16x02 for now. 


Re: ND6T sort of mini AGC ?

Doug W
 

Adrien,
There is so much information on this list that sometimes it is like trying to drink water from a fire hose.  If you access the list from https://groups.io/g/BITX20/topics there is a search function that is helpful when looking for specific information.  There are many discussions of AGC circuits including ND6T's great designs.
--
www.bitxmap.com


Re: Project : Ubitx go box with batteries (topic will be updated upon works done)

Olivier Grand
 

Ici Londres ! les Francais parlent aux Francais.
Another advantage using the nextion display is the spectrum analyser and the morse code reader (using the second Arduino for the standalone analyser) but by the way using a 2.8" model you will need tooth picks, specially during SOTA in winter Hi !
the 2.8" model is à relatively low consumption device I dont' really mesured the difference with a 16X02 or 20X04 but I think it's quite the same.
I've built another uBitx V5 with a 3.2" nextion screen feeded by the Raduino and the 7805 with a small heatsink is OK.
Regards
Olivier


Le mer. 28 août 2019 à 10:35, Adrien F4IJA <adrien.grelet@...> a écrit :
Salut Olivier,

Thank you for those informations (frenchies talking to each other in english, is kinda fun !)

So, that's quite interesting the running time you have. With that information, I think I should go for example with 3S2P to have extended autonomy, but 3S4P seems to be really overkill, even if you plan to go for 1 week SOTA without recharging, which will ne be my case (just one day session most, maximum a WE with other activities than radio too).

Another question : what do you think about the Nextion LCD ? In fact I'm thinking beetween two things :

My point is what are the benefits of the Nextion LCD, beside the comfort of use and ergonomy of menus. Also it's fancy and cool with that display ! Does it have other things you can't do with the basic LCD ?


Re: i2c encoders in matrix with I/O #ubitx

Don, ND6T
 

Please let us know how this board works out. My biggest concern would be that it probably would need to be constantly queried. For example; If you wanted to put the tuning knob on it, then it would need to be polled constantly to avoid missing a movement. As it is, just a millisecond of delay can mean a missing action and is intolerable. That's why non-interrupt encoder schemes are often flaky.
The I2C bus is incredible. I feed two displays and the synthesizer with just a minimum of wiring and it frees a slew of pins. Love it! Great for temperature sensing and time, too. Fingers crossed for a good result, Don


Re: i2c encoders in matrix with I/O #ubitx

Gary Anderson
 

On the hardware side, the interrupt pin INT, is an open drain asserted low signal (maybe better described as INT_B).  This node can be wired OR'd. ( 'daisy-chained' as John described)
The software will need to scan/poll each device to determine which module(s) asserted an interrupt, and service it  or them appropriately.

Rgds,
Gary


Re: ND6T sort of mini AGC ?

Adrien F4IJA <adrien.grelet@...>
 

Hi Don,
Thank you for your answer, directly from the maker ;-)

OK well I understand what you're saying and the differences beetween.

Well noted the PopFix page I've found on ubitx.net too.

I think I'll take a lool to AGC kits sooner as lot of people do.

73,
Adrien F4IJA


Re: ND6T sort of mini AGC ?

Don, ND6T
 

Hello Adrien,
That is not an AGC circuit, but is just a limiter circuit. No "clack" elimination but it does limit how strong it appears in your ears. It is hearing protection. I have installed that in several of my shack speakers. Since I do not like the sound of the small speakers in any of my rigs then I always use a larger, more efficient speaker whenever I can. To keep things simple then I install headphone jacks within those speaker enclosures (just one wire from the receiver). It makes sense to put a headphone jack on that speaker cabinet and a switch. The added limiter is a welcome feature to my ears.
The AGC circuits that are found in the uBITX and BITX pages are to confine the SSB signals to conversation levels. Without it, the weak signals are very quiet and the strong signals can be too loud. The AGC circuit helps keep them within a comfortable range without distortion and without constant adjustment.
The "clacks" when changing from receive to transmit (and back) in BITX40 and earlier versions of the uBITX can be nearly eliminated by installing the circuit described in the "ClickFix" pages in both the BITX and uBITX pages.
Does this answer your questions? I can be best reached directly by email, either from my web site or from the address on QRZ.com.
73, Don


Re: CAT control of uBITX

Sascha Bohnet | DL5SMB
 

A minor change in the KD8CECs' source code helps a lot if you want to use the cheap 100ppr encoder.
I documented what I did here

Maybe I can make a video after work, then you can see the difference between before and after the mod.


Re: Reduced power on 40 meters. #ubitx #v5

Murray Wills (ZL2IQ)
 

Thank you that is most helpful – there are little tid bits all over the place 😊

73 Murray ZL2IQ

 

From: BITX20@groups.io <BITX20@groups.io> On Behalf Of Viktors Miske via Groups.Io
Sent: Wednesday, 28 August 2019 6:00 PM
To: BITX20@groups.io
Subject: Re: [BITX20] Reduced power on 40 meters. #ubitx #v5

 

Here ya go Murray...
http://ubitx.net/fix-fix-uneven-tx-output-across-bands/


Re: power supply for ubitx5

MVS Sarma
 

Using 78s12 i gave scope for higher load for tft disply too Today i am substtuting 7805 on raduino with 78T05 that bought from aliex.....


On Tue, 27 Aug 2019, 3:17 am Woody, <woody@...> wrote:
On 8/26/2019 15:17, MVS Sarma wrote:
hi woody,
 I use 19V laptop adopter . I give the final FETs from 19 direct.
Hi,
Sounds good!   I have read a lot about running higher Vds for more output, but mine is on 13.6, along with the rest of the circuitry.  If I decide to run higher voltage on the PA in the future will probably go with a switching boost convertor so primary feed will still be 13.6+-
If your method (direct feed to the PA) is used, a plain 7812 should handle the rest. 
Woody - KZ4AK


--


ND6T sort of mini AGC ?

Adrien F4IJA <adrien.grelet@...>
 

I've found this from ND6T : http://www.nd6t.com/qrp/speaker.htm

On his website, we can find lot of ther AGC schems for ubitx but I wonder what is the usage for this very simple circuit ?
By reading the article, it seems that it cuts off too strong signals, so the annoying "clacks" should be canceled.

Do you think, if you don't plan to add a real AGC that this mod is a good idea for securing ears ?

As I'm a newbie with AGC : what are the benefits of having an AGC in ubitx ? I've well understood than the too heavy sounds will be reduced, but what else ?

Thank you,


Re: i2c encoders in matrix with I/O #ubitx

John (vk2eta)
 

Interesting devices. The boards also have 2 or 3 general I/O pins (depending on the usage of the LED), and 128 (256?) Bytes of EEPROM.

From a quick read of the Arduino library (https://github.com/Fattoresaimon/I2CEncoderV2.1) they have mapped registers at the selected I2C bus address (one for each encoder module). The registers perform configuration and access to encoder, push-button and GPIO pins and EEPROM data.

The library supports interrupts and callbacks which is handy but requires one interrupt enabled digital input pin (but I am not sure if it's one per module or if the modules can be daisy-chained to the one input).

73, John (VK2ETA)


Re: Project : Ubitx go box with batteries (topic will be updated upon works done)

Adrien F4IJA <adrien.grelet@...>
 

Salut Olivier,

Thank you for those informations (frenchies talking to each other in english, is kinda fun !)

So, that's quite interesting the running time you have. With that information, I think I should go for example with 3S2P to have extended autonomy, but 3S4P seems to be really overkill, even if you plan to go for 1 week SOTA without recharging, which will ne be my case (just one day session most, maximum a WE with other activities than radio too).

Another question : what do you think about the Nextion LCD ? In fact I'm thinking beetween two things :

My point is what are the benefits of the Nextion LCD, beside the comfort of use and ergonomy of menus. Also it's fancy and cool with that display ! Does it have other things you can't do with the basic LCD ?