Date   
Re: Fan Noise from amateurradiokits case kit #bitx20help

Ian Reeve
 

I too have the case assembly with fan,audio amp and agc boards for the Nextion 3.5" screen.The  supplied fan is noisy mechanically and electrically inducing noise on receive audio.Fan ran too fast so running it at reduced voltage and bypassing the DC supply with a electrolytic and a polypropolend cap of 220uf and 0.01 uf respectively.Fan runs at reduced speed and is no longer intrusive.  Ian M0IDR


From: BITX20@groups.io <BITX20@groups.io> on behalf of engineering@... <engineering@...>
Sent: Thursday, October 17, 2019 5:46:55 PM
To: BITX20@groups.io <BITX20@groups.io>
Subject: Re: [BITX20] Fan Noise from amateurradiokits case kit #bitx20help
 
Hi Albert,
 
You are way ahead of me.
 
I too am trying to assemble the kit with the 3.5" Nextion display and the kit is full of mysteries.
 
I can't find the exact code for the 3.5" display. The published code doesn't fill the display.
 
Not sure yet about the right code for the Nano, still looking for the *.ino file for this.
 
Lots of different files, different generations, but the guide is fuzzy.
 
No clue how to install the audio amp or the AGC board.
 
I've got one uBitx working in the smaller case with a version 4 board. That was
 a trial too, but not so bad.
 
Seems like clear instructions are promised in the future, but for now we are on our own.
 
Wayne O.
W9NZB
 
 

Re: cw filters

Ashhar Farhan
 

Nothing beats the jackal board.


On Thu 17 Oct, 2019, 4:50 PM Jerry Gaffke via Groups.Io, <jgaffke=yahoo.com@groups.io> wrote:
Easiest is to add an audio filter of some sort between the phone jack on your uBitx and your headphones.
For most of us, easiest means best.

Strong adjacent signals will cause audio distortion, for this reason somebody looking for the ultimate in performance
will want a separate crystal filter for the uBitx.  This is moderately easy to do, but be prepared to learn about
building crystal filters and how to modify the firmware on your rig.

A discussion of CW filters can be found here:  https://groups.io/g/BITX20/topic/32840565

Jerry, KE7ER



On Thu, Oct 17, 2019 at 08:39 AM, <dgclifford@...> wrote:
I have my basic ubitx working nicely, i just wish the cw filtering was a bit (lot) better.  What is the best way to improve the cw filtering and narrow it down.   Dave c

Re: Fan Noise from amateurradiokits case kit #bitx20help

albert@...
 

I will try that. Thanks!

Re: Fan Noise from amateurradiokits case kit #bitx20help

Mark Hatch
 

I replaced mine with a 10mm Noctua fan, but I have the taller case. I don't recall hearing any noise. I also put it on a switch. But if you look at ubitx.net and search for fan, you will see where someone used a $3 temp sensing relay to turn the fans on and off. He used heat transferred epoxy to attach the sensor to one of the heat sinks. Have the parts, but just have not taken that step yet. BTW: Since I was running KD8CEC with the extra nano, I already had a S meter. So I got a cheap digital readout and glued the sensor to the heat sink. That way, I could manually know when to turn on the fan.

73
Mark
AJ6CU

Re: Fan Noise from amateurradiokits case kit #bitx20help

 

Hi Albert,

I put my fan in series with a 104 degree F thermal switch so it never comes on unless I talk for a real long time. There is no need to have it running all the time. BTW, I've only had the fan come on once.

Joel
N6ALT

Re: Fan Noise from amateurradiokits case kit #bitx20help

albert@...
 

I found the 3.5" TFT at the amateurradiokits website.
You have to go to "My Account" dropdown (Orange Button)
Depending on the login state you may have to login.
There you will find a "downloads" link. (7th down)
Download the "uBitx Nextion Case" (last one, takes a while) 
Decompress is and look for a folder called "ubitx nexton case"
In that folder you will see a file "ubitx_35_basic.tft", That is what you want.
I am still waiting on my 3.5" display to be delivered. I am currently using 2.4" display I had for another project.

When you get to building and calibrating the AGC board use the "AGC Details.pdf" file found in the AGC folder!
DON'T download the second folder down (AGC) from the downloads amateurradiokits website. It will not give you ALL the information you need to know.
I used the AGC folder from the "ubitx nexton case" folder. (Spent a couple of days figuring that out.)

As for the uBitx software I used "http://www.hamskey.com/2019/04/release-cec-firmware-v1200-for-ubitx.html"
Scroll down to "2. Download the file"

Hope this helps!
Albert
KE0PRX

Re: 5w on 40 meters

ajparent1/KB1GMX <kb1gmx@...>
 

I've seen a few that had the wrong parts (inductors were obvious) installed for
the 40M filter.

Allison

Re: Fan Noise from amateurradiokits case kit #bitx20help

engineering@...
 

Albert!
 
I took the 2.3 inch from another listing an rewrote it for the 3.5. Not quite right.
 
Found it and downloaded it and I'm about to try your suggestion, "ubitx_35_basic.tft."
 
Let you know.
 
Wayne, W9NZB
 
 
 

--------- Original Message ---------
Subject: Re: [BITX20] Fan Noise from amateurradiokits case kit #bitx20help
From: albert@...
Date: 10/17/19 12:04 pm
To: BITX20@groups.io

I found the 3.5" TFT at the amateurradiokits website.
You have to go to "My Account" dropdown (Orange Button)
Depending on the login state you may have to login.
There you will find a "downloads" link. (7th down)
Download the "uBitx Nextion Case" (last one, takes a while) 
Decompress is and look for a folder called "ubitx nexton case"
In that folder you will see a file "ubitx_35_basic.tft", That is what you want.
I am still waiting on my 3.5" display to be delivered. I am currently using 2.4" display I had for another project.

When you get to building and calibrating the AGC board use the "AGC Details.pdf" file found in the AGC folder!
DON'T download the second folder down (AGC) from the downloads amateurradiokits website. It will not give you ALL the information you need to know.
I used the AGC folder from the "ubitx nexton case" folder. (Spent a couple of days figuring that out.)

As for the uBitx software I used "http://www.hamskey.com/2019/04/release-cec-firmware-v1200-for-ubitx.html"
Scroll down to "2. Download the file"

Hope this helps!
Albert
KE0PRX

Re: 5w on 40 meters

MVS Sarma
 

Thanks Allison. I measured  40m band LPF inductors were almost measuring 0.9nH  and I haddepended on the accuracy of sch and reduced turns.

regards  vu3zmv


On Thu, Oct 17, 2019 at 10:50 PM ajparent1/KB1GMX <kb1gmx@...> wrote:
I've seen a few that had the wrong parts (inductors were obvious) installed for
the 40M filter.

Allison

Re: Fan Noise from amateurradiokits case kit #bitx20help

engineering@...
 

Albert!
 
OK, that works. I don't like it as much as the ones that are smaller, but it does work.
 
Looks like I have a lot to learn here. Thanks for helping me get started.
 
Wayne O.
W9NZB
www.engineering@...
 

--------- Original Message ---------
Subject: Re: [BITX20] Fan Noise from amateurradiokits case kit #bitx20help
From: albert@...
Date: 10/17/19 12:04 pm
To: BITX20@groups.io

I found the 3.5" TFT at the amateurradiokits website.
You have to go to "My Account" dropdown (Orange Button)
Depending on the login state you may have to login.
There you will find a "downloads" link. (7th down)
Download the "uBitx Nextion Case" (last one, takes a while) 
Decompress is and look for a folder called "ubitx nexton case"
In that folder you will see a file "ubitx_35_basic.tft", That is what you want.
I am still waiting on my 3.5" display to be delivered. I am currently using 2.4" display I had for another project.

When you get to building and calibrating the AGC board use the "AGC Details.pdf" file found in the AGC folder!
DON'T download the second folder down (AGC) from the downloads amateurradiokits website. It will not give you ALL the information you need to know.
I used the AGC folder from the "ubitx nexton case" folder. (Spent a couple of days figuring that out.)

As for the uBitx software I used "http://www.hamskey.com/2019/04/release-cec-firmware-v1200-for-ubitx.html"
Scroll down to "2. Download the file"

Hope this helps!
Albert
KE0PRX

Re: Fan Noise from amateurradiokits case kit #bitx20help

KD2QMZ
 

Mine do exactly the same. Filtering with ferrite beads etc, no luck.
It may be a great improvement on the case, but another problem on the kit.
Still love it, just set mine aside for a later time.


On Thu, Oct 17, 2019 at 11:31 AM <albert@...> wrote:
I purchased a Nextion 3.5" cabinet kit from amateurradiokits DOT in.
The case came quite complete with all the cables/connectors, etc. but a little lacking in assembly instructions. (I am a kit builder and figured it out, well pretty much.)

I build the kit in sections,
1st    Basic Radio Ver. 5 with 2-line LCD in the case. (worked well)
2nd   Installed/Upgraded to the Nextion Display (Very nice addition)
3rd   Audio amplifier board (Little problem here, the amplifier IC was bad. Corrected and audio quality is MUCH better than with the LM386.)
4th   AGC board with VU meter (Had problems here with calibration. I found an alternate cal procedure buried (VERY Buried) in the documentation and all went well)
5th   Fan and Heatsink kit (Still have problem here, see below...)

The Heatsinks were too tall and I was afraid they could touch the grounded top case.
They would clear the case top but, if any pressure was put on the top I felt it would possibly touch so I milled .125" off and all was good. 
BTW, my IRC-510s are in sockets which raises them about .25".

The fan is another issue.
The instructions do not indicate how/where to connect it.
It is a 12 volt brushless type. I decided to connect it to the power switch, Unit On-Fan On.
I get terrible audio interference from the fan.
I was going to try moving the fan to the outside of the metal case or possibly connect it to the Transmit side of the TR relay, Transmit-Fan On, Receive-Fan Off
Possibly try another brushless fan, maybe the one I got has a problem.

Has anyone else built this kit and had a similar issue? 
Albert
KE0PRX

uBITX Code Compilation Problem

Adrian Rees (MW1LCR) <mw1lcr@...>
 

Hi all

I am trying to compile the uBITX v5.1 code and i am getting compilation errors.

I managed to sort out all except one...

the error I get is:

exit status 1
'checkCAT' was not declared in this scope

I checked that the {} brackets where correct and they seem to be OK. I am using Arduino v 1.8.10

Can some body help ?

Thanks

Adrian M1LCR



uBITX v5.1 and uBITX_Manager_V1.11 problem

pd0zz@...
 

Hello, the arduino nano in my newly installed uBITX V5.1 is unreacheble from the program uBITX_Manager_V1.11.
I wanted to install uBITX_CEC_V1.200, but alas, as rookie I can't get it working.
The problem is that uBITX-Manager cannot contact the arduino, even after checking portsettings in win10.
Tell me what to do?
Thanks, Martin


Virusvrij. www.avast.com

Re: uBITX v5.1 and uBITX_Manager_V1.11 problem

Herman Scheper
 

First you have to use Xloader software to programm the Arduino nano with the CEC hex file you need. You can find it on the hamskey.com website. I am now on the wrong place to inform you better. It take me a week before i get it running on my ubitx v5. Before have Xloader working take a day for me as Arduino nano rookie.  I printed a lot of information all coming from the Hamskey site.  Veel succes van PA0BAB

Herman vanaf z'n IPad.

Op 17 okt. 2019 om 22:23 heeft pd0zz@... het volgende geschreven:

Hello, the arduino nano in my newly installed uBITX V5.1 is unreacheble from the program uBITX_Manager_V1.11.
I wanted to install uBITX_CEC_V1.200, but alas, as rookie I can't get it working.
The problem is that uBITX-Manager cannot contact the arduino, even after checking portsettings in win10.
Tell me what to do?
Thanks, Martin


Virusvrij. www.avast.com

Re: Antuino to calculate db loss

iz oos
 

Thanks Raj for the great hint! I feel lucky I haven't waited 40 years for Antuino. It's really cleverly designed!!!


Il 16/ott/2019 19:28, "iz oos via Groups.Io" <and2oosiz2=gmail.com@groups.io> ha scritto:

I see. I get - 17db rf out. So I added a non inductive -6db 2ghz attenuator and I get - 20db. Now I see insertion losses.


Il 16/ott/2019 15:34, "Raj vu2zap" <rajendrakumargg@...> ha scritto:
What you read with antuinos In-Out direct connected is base number.

If you base is -21 and you get a reading of -26dbm then your loss is
5db

I wish I has an antuino 30-40 years back!

Have fun
--
Raj

At 16/10/2019, you wrote:

Hi Raj, yesterday when I tried to join the Antuino group I got the answer that my email was already added. But apparently I am not receiving the emails.

The version I have was built in late August and It showed values if I remember right (I have not it here right now) - 19 or - 21db depending on frequency. It is clear to me how to plot and see the readings on different frequencies but I cannot see how to measure the insertion losses eg. Maybe I have just to study the whole messages I missed on the Antuino group!

Il 16/ott/2019 13:18, "Raj vu2zap" < rajendrakumargg@...> ha scritto:
Ooz,
Join us on the antuino group..

Set your center freq, select SNA mode.
Connect filter input to the top (antuino OUT) connecter and filter out to bottom (antuino IN) connector.
click Plot.

The plotted graph has a cursor at the center, you can move the cursor with the knob
and take readings at different spots.

Raj

At 16/10/2019, you wrote:

I mean the loss in db within the passband of the filter. Or a loss in a cable.

Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:
Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Martin KM6TCD
 

I don't mind a single post informing us of something of importance to us all.
 
What I mind the 15 - 20 posts arguing about who is more righteous than thou.
 
That, I consider spam.
 

Re: Fan Noise from amateurradiokits case kit #bitx20help

engineering@...
 

Albert!
 
All tested, that works perfectly! Thank you so much!
 
Wayne O.
 

--------- Original Message ---------
Subject: Re: [BITX20] Fan Noise from amateurradiokits case kit #bitx20help
From: albert@...
Date: 10/17/19 12:04 pm
To: BITX20@groups.io

I found the 3.5" TFT at the amateurradiokits website.
You have to go to "My Account" dropdown (Orange Button)
Depending on the login state you may have to login.
There you will find a "downloads" link. (7th down)
Download the "uBitx Nextion Case" (last one, takes a while) 
Decompress is and look for a folder called "ubitx nexton case"
In that folder you will see a file "ubitx_35_basic.tft", That is what you want.
I am still waiting on my 3.5" display to be delivered. I am currently using 2.4" display I had for another project.

When you get to building and calibrating the AGC board use the "AGC Details.pdf" file found in the AGC folder!
DON'T download the second folder down (AGC) from the downloads amateurradiokits website. It will not give you ALL the information you need to know.
I used the AGC folder from the "ubitx nexton case" folder. (Spent a couple of days figuring that out.)

As for the uBitx software I used "http://www.hamskey.com/2019/04/release-cec-firmware-v1200-for-ubitx.html"
Scroll down to "2. Download the file"

Hope this helps!
Albert
KE0PRX

locked Re: Cal Fire Moves to Dismantle Ham Radio System, Endangering Lives Amid Blackouts and Wildfires | Trending

Tom, wb6b
 

On Wed, Oct 16, 2019 at 08:14 PM, Jack, W8TEE wrote:
very close working relationship with police, fire, and other emergency agencies
Yes, perhaps I'm being a little hard on the official agencies. They do their official duties well, are dedicated and fortunately (hopefully) have modern communication systems that will let do their work efficiently and reliability. But, especially in a bigger state the people and the government become isolated from each other. So, people that recognize this and may be more political savvy (in a good way) may be reaching out and help put the advantages of volunteer groups and official agencies working together back in the awareness of the people that prepare for disaster. The Hams will have an important role in providing communication for the general population and the more coordinated with the official agencies the better. I think locally, here, the comment was made about responsibility if a volunteer got hurt and insurance (whether this reported reason was official, I'm not totally sure). In a disaster situation the people worrying about insurance will be overridden by the desire for the volunteer services to fill in these gaps. 

Tom, wb6b

Re: Antuino to calculate db loss

 

Welcome, I feel that there are lot more features to come in Antuino hardware V2. Specially
built in attenuators and more accurate db/swr readings.

Raj


At 18/10/2019, you wrote:

Thanks Raj for the great hint! I feel lucky I haven't waited 40 years for Antuino. It's really cleverly designed!!!

Il 16/ott/2019 19:28, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:

I see. I get - 17db rf out. So I added a non inductive -6db 2ghz attenuator and I get - 20db. Now I see insertion losses.

Il 16/ott/2019 15:34, "Raj vu2zap" < rajendrakumargg@...> ha scritto:
What you read with antuinos In-Out direct connected is base number.

If you base is -21 and you get a reading of -26dbm then your loss is
5db

I wish I has an antuino 30-40 years back!

Have fun
--
Raj

At 16/10/2019, you wrote:

Hi Raj, yesterday when I tried to join the Antuino group I got the answer that my email was already added. But apparently I am not receiving the emails.

The version I have was built in late August and It showed values if I remember right (I have not it here right now) - 19 or - 21db depending on frequency. It is clear to me how to plot and see the readings on different frequencies but I cannot see how to measure the insertion losses eg. Maybe I have just to study the whole messages I missed on the Antuino group!

Il 16/ott/2019 13:18, "Raj vu2zap" < rajendrakumargg@...> ha scritto:
Ooz,
Join us on the antuino group..
Set your center freq, select SNA mode.
Connect filter input to the top (antuino OUT) connecter and filter out to bottom (antuino IN) connector.
click Plot.
The plotted graph has a cursor at the center, you can move the cursor with the knob
and take readings at different spots.
Raj
At 16/10/2019, you wrote:

I mean the loss in db within the passband of the filter. Or a loss in a cable.
Il 16/ott/2019 12:17, "iz oos via Groups.Io" <and2oosiz2= gmail.com@groups.io> ha scritto:
Hello Folks, finally Antuino knocked to my door! I have played with it plotting bandpass and notch filters. Nice and practical, however how do I determine the loss of my filters in terms of db using Antuino? Can you provide a simple example so I can get the trick?

Re: Using FT8 with Bitx40 (and microphonic problem). #bitx40 #ft8

Vic WA4THR
 

A couple thoughts about your BitX40. Ashar Farhan suggested that there was possibly too much gain being applied in the LM386 in some applications and that removing the capacitor between pins 1 and 8 might help. Others have said adding a resistor from the volume pot was useful. See the references in https://groups.io/g/BITX20/topic/6827156#34982

Also, the upgrade to the Amunter sketch for the BitX40 does not require any modifications to the rig and still offers tuning benefits. However, with just a few well illustrated and explained additions, which are described in his documentation, you will have many new features like sideband selection, dual VFOs, scanning, and so forth. I highly recommend that software.

=Vic=