Date   
Re: Done!

David Adams
 

Tell me more about this mag loop controller... also congratulations on the new book.  I look forward to purchasing it!


dAve

On 12/11/2019 11:03 AM, Jack, W8TEE via Groups.Io wrote:
All:

I've been rattling on about the "new Projects" book off-and-on for about a year. Al (AC8GY) and I are sending the book to the publisher (ARRL) on Friday, completely finished and ready to go! The projects in the book can be seen in this photo:




There are four other chapters, too, but don't result in an actual project (e.g., setting up the IDE, Intro to C, Libraries and OOP, etc.). Alas, the ARRL has stuck the new license manual in front of our book, so it appears we will miss the Dayton show. That really sucks since Al and I will be at FDIM anyway. Oh well...


Jack, W8TEE

--
Jack, W8TEE

Re: Active antenna into uBITx V5 gives some smoke on the coax #ubitx #v5 #antennas

Skip Davis
 

Yes that 100nf capacitor will work fine. 

Skip Davis, NC9O

On Dec 11, 2019, at 11:52, Erwin Serlé via Groups.Io <waterwin2@...> wrote:

Thank you Skip, I will add a DC-blocking capacitor. Would 100nF be good?


--
PE3ES - F4VTQ - Erwin
73

Re: enhancement #ubitx #v5

Erwin - PE3ES - F4VTQ
 

1. Decide what you need most, find the articles and authors associated with these, etc.

2. Use google, find Alex Buurlage PA1FOX and mail him.
He might even answer when asked friendly.

3. Offer support for the group to make a nice index to everything and the rest.


--
PE3ES - F4VTQ - Erwin
73

Re: Installing BCI and Kit-Projects AGC

 

Joel,

 I am build more today and hope to have yours in the mail today or tomorrow. Sorry for the delay.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: STM32F769-FT8-Transceiver

Charles Hill
 

Erwin,

Thanks for the interest.

It will not be feasible to port the application to other boards than the F769.

Regards,

charley

Re: Active antenna into uBITx V5 gives some smoke on the coax #ubitx #v5 #antennas

Erwin - PE3ES - F4VTQ
 

Thank you Skip, I will add a DC-blocking capacitor. Would 100nF be good?


--
PE3ES - F4VTQ - Erwin
73

Re: Done!

dwhacks
 

This is going to be awesome! One thing, I was looking for the Dummy Load code again last night and I was getting all sort of errors on your site. Any idea why that's happening?

Re: Done!

Mark Hatch
 

Can't wait! Congratulations!!!!

Mark

Done!

Jack, W8TEE
 

All:

I've been rattling on about the "new Projects" book off-and-on for about a year. Al (AC8GY) and I are sending the book to the publisher (ARRL) on Friday, completely finished and ready to go! The projects in the book can be seen in this photo:

Inline image


There are four other chapters, too, but don't result in an actual project (e.g., setting up the IDE, Intro to C, Libraries and OOP, etc.). Alas, the ARRL has stuck the new license manual in front of our book, so it appears we will miss the Dayton show. That really sucks since Al and I will be at FDIM anyway. Oh well...


Jack, W8TEE

--
Jack, W8TEE

Re: Active antenna into uBITx V5 gives some smoke on the coax #ubitx #v5 #antennas

Gordon Gibby
 

That was great of you to explain that!   Once you explain it it makes good sense!


On Dec 11, 2019, at 09:07, Skip Davis via Groups.Io <skipnc9o@...> wrote:

Erwin there is a good reason for what you experienced with the active antenna the uBITX antenna input looks like a short for DC. This is because the antenna input is connected via a low pass filter to T2 of the mixer. If you measured the uBITX antenna input with a ohmmeter you will see zero ohms. 
If you install a capacitor in series with the input to isolate DC on the active antenna on the uBITX side you should be fine. 

Skip Davis, NC9O

On Dec 11, 2019, at 07:29, Erwin Serlé via Groups.Io <waterwin2@...> wrote:

I have a loosely soldered uBITx on my work area connected to a 12V power supply and a headphone. Nothing properly mounted , shielded etc.
Just to hear some RF coming in as the kit arrived just some hours ago.

I works, with hum, other sounds etc. As expected. Power supply shows 166 mA current at 12V.

Then I changed the coax coming from one of my normal antenna's into a coax coming from my active antenna. A design by PE0RDT also known as mini-whip.
The electronics receive their power via the coax going out and connected to another 12V power supply.

This is a BAD idea.
I saw strange flickering on the uBITx display, going on and off, and also the same on the first 12V power supply powering the uBITx board. And I noticed smoke coming from the coax, at both sides, into the uBITx and at the power/connector box to the active antenna.
I pulled the 12V from the active antenna, pulled the (warm and melted) coax from both sides, switched of the 12V powering the uBITx board.

After connecting a normal antenna all is well again.

Possibly there is (quite) some difference between the 2 ground potentials of the 2 different supplies. I will need to measure this ;-)
Later...
When I have grounded all things great and small, and have a good metal enclosure etc.

--
PE3ES - F4VTQ - Erwin
73

Re: Active antenna into uBITx V5 gives some smoke on the coax #ubitx #v5 #antennas

Skip Davis
 

Erwin there is a good reason for what you experienced with the active antenna the uBITX antenna input looks like a short for DC. This is because the antenna input is connected via a low pass filter to T2 of the mixer. If you measured the uBITX antenna input with a ohmmeter you will see zero ohms. 
If you install a capacitor in series with the input to isolate DC on the active antenna on the uBITX side you should be fine. 

Skip Davis, NC9O

On Dec 11, 2019, at 07:29, Erwin Serlé via Groups.Io <waterwin2@...> wrote:

I have a loosely soldered uBITx on my work area connected to a 12V power supply and a headphone. Nothing properly mounted , shielded etc.
Just to hear some RF coming in as the kit arrived just some hours ago.

I works, with hum, other sounds etc. As expected. Power supply shows 166 mA current at 12V.

Then I changed the coax coming from one of my normal antenna's into a coax coming from my active antenna. A design by PE0RDT also known as mini-whip.
The electronics receive their power via the coax going out and connected to another 12V power supply.

This is a BAD idea.
I saw strange flickering on the uBITx display, going on and off, and also the same on the first 12V power supply powering the uBITx board. And I noticed smoke coming from the coax, at both sides, into the uBITx and at the power/connector box to the active antenna.
I pulled the 12V from the active antenna, pulled the (warm and melted) coax from both sides, switched of the 12V powering the uBITx board.

After connecting a normal antenna all is well again.

Possibly there is (quite) some difference between the 2 ground potentials of the 2 different supplies. I will need to measure this ;-)
Later...
When I have grounded all things great and small, and have a good metal enclosure etc.

--
PE3ES - F4VTQ - Erwin
73

enhancement #ubitx #v5

Anthony F4HUY
 

Hello,

Just got my ubitx v5, files section of groups.io is a big mess,
1- where i can find document or list of enhancement and modification for this kit (agc, mic compressor ...) ?
2- where can i find firmware with smeter fnc like this one ?
https://www.youtube.com/watch?v=pP1kXFidNTw&t=8s

thx you
73' !

Re: Rig Control

Ted
 

While on this topic:   I hooked up my V5 with CEC firmware to the PC, running WSJT-X and it seems that whenever the program picks a frequency on 40 meters (the only band I tried, admittedly, as I was there at the time) the software wants to choose LSB.   As we seemingly all run data on USB, is this a function of WSJTX?   My question is - does anyone else experience this with that software?   Does anyone else run that software into these radios?


Tnx,


Ted
K3RTA

Re: STM32F769-FT8-Transceiver

 

I'm putting one together from Charley's instructions.  I should have results soon..
Your mileage may vary,
Jim

Active antenna into uBITx V5 gives some smoke on the coax #ubitx #v5 #antennas

Erwin - PE3ES - F4VTQ
 

I have a loosely soldered uBITx on my work area connected to a 12V power supply and a headphone. Nothing properly mounted , shielded etc.
Just to hear some RF coming in as the kit arrived just some hours ago.

I works, with hum, other sounds etc. As expected. Power supply shows 166 mA current at 12V.

Then I changed the coax coming from one of my normal antenna's into a coax coming from my active antenna. A design by PE0RDT also known as mini-whip.
The electronics receive their power via the coax going out and connected to another 12V power supply.

This is a BAD idea.
I saw strange flickering on the uBITx display, going on and off, and also the same on the first 12V power supply powering the uBITx board. And I noticed smoke coming from the coax, at both sides, into the uBITx and at the power/connector box to the active antenna.
I pulled the 12V from the active antenna, pulled the (warm and melted) coax from both sides, switched of the 12V powering the uBITx board.

After connecting a normal antenna all is well again.

Possibly there is (quite) some difference between the 2 ground potentials of the 2 different supplies. I will need to measure this ;-)
Later...
When I have grounded all things great and small, and have a good metal enclosure etc.

--
PE3ES - F4VTQ - Erwin
73

Re: 0dBm and -60dBm calibration

Erwin - PE3ES - F4VTQ
 

Smart as always!

--
PE3ES - F4VTQ - Erwin
73

Re: STM32F769-FT8-Transceiver

Erwin - PE3ES - F4VTQ
 

Hi Charley, thanks for posting this.

I just wrote an article on the STM32F429 Development board as used by Alberto I2PHD for an ARM Radio for LW/MW. It is in the FUNKAMATEUR December 2019 issue. I had to use older versions of the Keil development setup as the original software is from 2015.

Do you expect a lot of issues (library changes etc) to be able to use your development on the board I have?
--
PE3ES - F4VTQ - Erwin
73

Re: ubitx v4 distortion/ vibration in audio out

Vic WA4THR
 

Have you tried adjusting the BFO frequency? Often that is the problem with poor or distorted audio.

=Vic=

Re: Rig Control

the.chaotician@...
 

Hi Arv,

I've just got my Ubitx to to talk to GRIG, here is command that worked for me

grig --model=120 --rig-file=/dev/ttyUSB0 --speed=38400

also this page appears at the top of my Google search when looking for UBITX and GRIG  so this may be useful for someone else/future me when I have forgotten the options I need to use to make GRIG work...

Cheers,

Matt H

Re: problem loading nextion firmware model mismatch

Jack, W8TEE
 

The 2.8 size is likely not the problem. You need to have the display driver (e.g., ILI9341) on the display match the library used to process the code. Check to see if the display you ordered matches the library being used by the software.

Jack, W8TEE

On Tuesday, December 10, 2019, 4:41:34 PM EST, Morris Ford <morrishford@...> wrote:


Trying to load nextion firmware on a 2.8 lcd. The load is saying that the model in the firmware and the model of the lcd don't match. Is that a known problem? I have double checked that I have the right firmware and the device is truly a 2.8. The difference between the two is that the firmware model number has R at the end and the device does not. 
Any ideas.
Thanks
Morris
K7LSV

--
Jack, W8TEE