Date   
Re: Ordered ubitx6

Arv Evans
 

Re: Cat interface #v6

_Dave_ AD0B
 

In WSJTX for CAT control set the rig type to a  Yaesu 857 and use a USB connector between the raduino and computer to control the frequency and switching between Tx and Rx.  I mounted a USB multiple port inside the case and plugged a USB sound card in that. The transmit and receive levels are controlled via the volume pot. the transmit is controlled by the screen control. 

To set the power out put I turn down the transmit gain on the wsjt screen until the level on my power meter drops a bit and don't run higher than that. 

it seems that that a lot of operators on this mode run a power amp,  wsjt is weak signal joe taylor. 
--
73
Dave
AD0B
Raduino bracket and Ham_Made_Keys

Re: Cat interface #v6

Mick
 

Rene, Evan,
I also use the CEC software and cat control via USB on my ubitx. For signal connection I use the USB to audio adapter $15CAD below. This works extremely well with my audio out volume set at about 70%. I’ve made QSO’s to Europe several times now and I’m pushing about 20 W output with 14 Vic supply voltage. Just make sure the PTT wire from the adapter to the ubitx is disconnected otherwise it will try to TX when you don’t want it to. I got tired of switching plugs (mic and headset) when on FT8 so I mounted separate Jacks on the back panel and wired them to the correct pins on the audio 1 plug.

UGREEN USB Audio Adapter External Stereo Sound Card Universal USB Stereo with 3.5mm Headphone and Microphone Jack for Windows, Mac, Linux, PC, Laptop, Desktop, PS4, Raspberry Pi, Surface 3 Pro (Black) https://www.amazon.ca/dp/B01N905VOY/ref=cm_sw_r_cp_tai_ZoszEb00J4QFD

--
 

73
Mick VA3EPM 

Re: Ordered ubitx6

Curt
 

OM Singh

Welcome back to ham radio. OM Dave has good advice. If you can erect some kind of pole, use light weight wire, and if possible assemble a vertical (needs some kind of radials) or better an end fed halfwave. The latter can be homemade, but you need a suitable toroid and a fixed capacitor only.

We are in time of low solar flux so be patient. Others may have ideas on balcony antennas, be patient as you locate materials. Much knowledge of ham radio on the internet, and in this nice group. Glad a ubitx has landed with you.

Curt wb8yyy

Re: Portable antenna(s) #antennas #v6

Gordon Gibby
 

https://qsl.net/nf4rc/2019/InstructionsEFHW.pdf

Look way to the end of this article and you will find data on the losses of the simple original design we used locally.   They weren’t great, but they weren’t terrible either. 

Subsequently I discovered if you increase the turns to four and 28, you can substantially reduce the losses at the low end of the frequencies. 

Some back of the envelope calculations suggested that for an FT Dash 240 Dash 43, three turns and 21 turns might be optimal.  I have not yet done any efforts to improve Upper frequency response by adding capacitors, all the commercial devices have those

(Using lower permeability toroids was definitely a big mistake for other designs.  )




On Feb 19, 2020, at 07:57, Tom, wb6b <wb6b@...> wrote:

On Wed, Feb 19, 2020 at 02:20 AM, Gordon Gibby wrote:
but I did not see loss or efficiency data
Hi Gordon,

I think the efficiency is based on the ratio of shorter length vs a half wave. I've seen formulas and tables with antenna efficiency listed that way. As for transnformer loss, yes, it would be nice if they specified that. Palomar Engineers has been around for a long time and I'm basing the odds that they design their ununs correctly on their reputation. But an actual measurement by them or a qualified tester in a review would be nice. I don't know how a well designed 49:1 transformer vs a well designed 9:1 transformer stack up next to each other loss wise.

In my case I bough the 9:1 unun kit and installed it in a weathertight PVC conduit right angle junction box. My main driving factor was to be able to run a shorter antenna wire that would let me operate on 75 meters phone in the space I had available for the antenna run. 

Tom, wb6b

Re: Very cheap, 24 cent microprocessors. #firmware #i2c

Tom, wb6b
 

On Sun, Mar 8, 2020 at 07:32 AM, Bill Cromwell wrote:
Is your alter ego Rube Goldberg? <sly grin>
Oh, I just saw actual the quoted text. 

Yes referring to the spring, I gladly admit to Rube Goldberg as an alter ego. 

Although, I sometimes feel the same way when I'm spending so much time working with software issues. Sometime the software seems like it could have been by Rube Goldberg, himself. 

Tom, wb6b

Re: Cat interface #v6

Evan Hand
 

I am using Google translate to read your message, so please excuse any errors.  I got "Okay, thanks for the quick answer, but again, what makes the ptt switch ?? Is that via the usb ??
Groeten

For the Icom 7300, all of the controls, including PTT happen through the USB connection.

For my Hermes Light 2 it is via Ethernet and internal software connections.

For the uBitx, all of the rig control functions including band, frequency and push to talk are controlled by the Raduino Nano and can be controlled using the USB CAT controls.  The audio signals including volume control and mic level have to be connected and controlled in some other way.  This can be direct to a headphone/mic jack on the computer (volume and mic level), on an analog interface, or using a USB audio dongle.

My current state with the uBitx on FT8 is marginal.  I need to improve my audio interface and come up with a way to better control the audio into the mic input.  There is metering on the audio going into the WSJT X software, and I can easily adjust the volume control on the rig to the correct level.  There is not an easy way to measure the signal quality for the audio going into the mic jack of the uBitx.  There is a way to adjust the audio level, just not a way to measure the actual signal coming out of the uBitx for quality.

There are other issues that I still need to address.  I by no means am an expert on digital modes with the uBitx.

73
Evan
AC9TU

Re: Very cheap, 24 cent microprocessors. #firmware #i2c

Tom, wb6b
 

On Sun, Mar 8, 2020 at 07:32 AM, Bill Cromwell wrote:
Is your alter ego Rube Goldberg? <sly grin>
Maybe. But someone needs to be the one to get these things to work. 

If I'm lucky the programmer utility was written in a Microsoft DotNet language, that means I may be able to setup my Nuvoton 8051 development systems on a Raspberry Pi. Amazingly enough, many DotNet programs will run under Wine/Mono on the Pi, even though it is not an x86 processor, due to DotNet code being intermediate code compiled to target machine code on the fly. 

The CEC memory utility is an example of a Windows program that runs on the Raspberry Pi. 

I'm compiling the SDCC complier now on the PI. Takes an hour or so to complete. (Then it will likely throw an error just before the very end, I'll need to fix it, and start over again.) 

Although the Nano on the uBitx is inexpensive, I like the idea of using the 24 cent processors to do things independently of the main Nano processor, freeing it up to do more high level work, without adding a lot of cost and space for more Nano boards. And not feel bothered that somehow chips with only 10 or 50 lines of code are not fully utilizing the processor chip.

Tom, wb6b

Re: Portable antenna(s) #antennas #v6

KB9WOO
 

I ordered the mini no tune EFHW kit from QRPguys... almost 3 weeks ago. No shipping notification yet. 


-- 
Mark, kb9woo
Milwaukee, WI uBITX v6

Re: For Sale: UBITX V5 w/case, 2.8 Nextion, all KD6CEC upgrades, Sotabeams ssb/CW filter

Joel Trenalone
 

It has sold :)
Joel
KD6AGW

Re: Very cheap, 24 cent microprocessors. #firmware #i2c

Bill Cromwell
 

Hi Tom,

Is your alter ego Rube Goldberg? <sly grin>

73,

Bill KU8H

On 3/8/20 12:11 AM, Tom, wb6b wrote:
On Sat, Mar 7, 2020 at 05:01 AM, Bill Cromwell wrote:
The solder had melted and the transistors fell out - shutting the
train wreck down
That's funny. Normally the joke is the finals sacrificed themselves to protect the fuse. Maybe some thought could be given to this form of circuit protection. Maybe attach a spring to the transistors to it won't be dependent on gravity.
Tom, wb6b
--
bark less - wag more

Re: Ordered ubitx6

David Wilcox <Djwilcox01@...>
 

I am on the 3rd floor of a 4 story condo and find that the steel in the floor and ceiling of our deck plus the screen (stucco) in the sides of the building reduce my signal significantly. So hope you are using more than the 5 - 10 watts out of the ubitx6. I have tried half wave end feds over the deck sides and mag loops out on the deck with limited success even on FT8. I can hear signals and I show up on the pskreporter but contacts are few. I think 25 or more watts would help. A fiberglass pole stuck out at an angle from the building seems to work for some people.

Good luck.

Dave K8WPE

David J. Wilcox K8WPE’s iPad

On Mar 8, 2020, at 9:39 AM, Puneit Singh <puneit.singh@...> wrote:

CQ CQ
I am a dormant ham with callsign VU2TUM. I have ordered a ubitx6 as my first HF radio. What antenna should I get or DIY. I live on the 11 floor in an apartment and hence I need something that I can install in my balcony.
Are there any starting up guides for someone who passed their exam 10 years ago.
Any tips are welcome.
Thanks

73s
de VU2TUM
Puneit Singh
Gurgaon , India
Telegram handle @puneit


Ordered ubitx6

Puneit Singh
 

CQ CQ
I am a dormant ham with callsign VU2TUM. I have ordered a ubitx6 as my first HF radio. What antenna should I get or DIY. I live on the 11 floor in an apartment and hence I need something that I can install in my balcony.
Are there any starting up guides for someone who passed their exam 10 years ago.
Any tips are welcome.
Thanks

73s
de VU2TUM
Puneit Singh
Gurgaon , India
Telegram handle @puneit

i buy ubitx

ea5eq01@...
 

I buy ubitx version 3, which is located in Europe.
thanks
Send offers to my email, ea5eq01@...
 

ubitx v6 now help...

danilo datres
 

hello, tnx  for  help about  sound of my ubitx v6.  have a little answer about  v6 ... i must  make setup tune up,setting  bfo   as usual for other model ? are a newbie  and sorry for my  english..   thanks in advance  from italy   de in3izq danilo '73  

Re: automatic magnetic loop adjustment

Rene
 

Hello, i made a litle loop using 3 bicicle weels on a plate. I made it so that the middle wheel could move up and down so you can make pressure on the pipeevery round som tighter until you have a good circle.

Re: Cat interface #v6

Rene
 

Oké, bedankt voor het snelle antwoord, maar nogmaals, wat maakt de ptt omschakeling ??. Is dat via de usb ??
Groeten
Rene

Re: For Sale: UBITX V5 w/case, 2.8 Nextion, all KD6CEC upgrades, Sotabeams ssb/CW filter

Joel Trenalone
 

Hi David,

sorry, I’m not sure how the PM works on this board.  

just email me at jtrenalone@...,
thanks,
Joel
KD6AGW

Re: Very cheap, 24 cent microprocessors. #firmware #i2c

Tom, wb6b
 

On Sat, Mar 7, 2020 at 05:01 AM, Bill Cromwell wrote:
The solder had melted and the transistors fell out - shutting the train wreck down
That's funny. Normally the joke is the finals sacrificed themselves to protect the fuse. Maybe some thought could be given to this form of circuit protection. Maybe attach a spring to the transistors to it won't be dependent on gravity.

Tom, wb6b

Re: Very cheap, 24 cent microprocessors. #firmware #i2c

Tom, wb6b
 

Hi,

So far this is the best article I've found for developing with the 24 cent Nuvoton 8051 processor with open source tools. In this case using Linux. There is one tool that runs under Windows and the author has been able to run that tool under Linux using Wine.

http://www.mark-fink.de/2019-01-12-n76e003-firmware-nu-link/

I've installed SDCC on my Mac (using brew) and am currently working on getting the program upload utility to work with Wine on my Mac. The author used the older version of the chip and a different development board and programmer, hopefully that won't make any major difference.

My Nuvoton NuMicro "8051 NuTiny Board" (NT-MS51FB) came and will be testing it out when I get the programing utility working.

Working with this processor and tools (SDCC also compiles code for the Z80 and other old time eight bit processors) brings be back in a nice nostalgic way to the days of writing code working with my old IMSAI CP/M machine. Kind of a full circle completion feeling between the early Microcomputer days and the present.

Thanks to all the coronavirus concerns, I sprayed the board with a mist of the alcohol I use for cleaning boards after soldering. The  package arrived fairly quickly (normally a good thing). I'm sure I'm being over cautious, but what the heck, I have the spray bottle of alcohol. 

Tom, wb6b