Date   
Re: Antuino

 

Hi Farhan,

When will the Antuiono be released through HFSigs.com?

Joel
N6ALT

Re: FS: QRP Gear

Terry Morris
 

Now get your car repaired! lol

Terry - KB8AMZ
Brimfield Twp, OH USA EN91hd
Linux User# 412308, Ubuntu User# 34905, PCARS#78, NAQCC#6668, QRP-ARCI#8855, SKCC#14195


On Wed, Jun 5, 2019 at 11:54 AM N8DAH <Dherron@...> wrote:

Everything Has been sold

Thanks for the interest.

73
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Wanted

Martin KM6TCD
 

Our club is looking for a built, tested, and working transceiver.
 
Anyone got one they might sell?
 
km6tcd

Re: Wanted

Doug W
 

did you have a particular model in mind?  this list covers the entire BITX family.
--
www.bitxmap.com

Re: FS: QRP Gear

 

I did 600$ brake job....
--
David

 N8DAH
Kit-Projects.com

Shop is open!

Re: Wanted

Adrian Chadd
 

Yeah, hit me up. I'm local to you (east oakland) and can help you get
a HF transceiver.



-adrian

On Wed, 5 Jun 2019 at 10:38, Martin KM6TCD <peaceofandalus@...> wrote:

Our club is looking for a built, tested, and working transceiver.

Anyone got one they might sell?

km6tcd

KD8CEC: Changing the calibration data from within the Nextion GUI

Mark Hatch
 

Hi,

Is there some special startup code to get to the "pmem" setup page from within the KD8CEC UX on a Nextion?

From within the Nextion editor, I can see the page "pmem" and it seems to allow you to update Calibration, BFO, etc.  However, it *does* not look like the page is actually accessible (or at least I have not found it yet.)

Anybody sorted this out? I am thinking that this page may have been for debugging by ian or was deleted because he recommends using the uBitx Database manager to do the updates?

73
Mark
AJ6CU

Re: Nextion 5/Enhanced for KD8CEC 1.2?

Mark Hatch
 

Joe,

Do you have the photoshop version of picture 1? The white box in lower left corner (where the spectrum is displayed) appears to be wide by 5-10 pixels. The OCDC in me wants to make the box the same width as the spectrum.

If not, I can photoshop it. BTW: Getting close to another update. a couple more screens that need a light touch (mem<->vfo, Control Menu, frequency), and then a sweep to put the home button in a consistent place.

73
Mark

uBITX v3 Low Output

Hugh Debo
 

Hello all,
I have been reading this group for a while, but have just joined. Thanks for the add.
I've been a ham for only a couple of years, so this has been a lesson learned:

A couple of weeks ago I was experimenting on JS8 with a new antenna and produced enough 
common mode current to fry my Raspberry Pi and uBITX.  The RPI was replaced as were the finals
in the uBITX, but I had only about 1W output. I replaced the finals a second time, but the low output continues.

I downloaded the Diagnostic Guide and have measured all the TX Testpoints (Thanks Farhan!).
Using a battery at 12.3 VDC to power the uBITX, most Testpoints' measurements showed voltages slightly higher 
(+ 0.1-0.4 VDC) than the values listed in the Guide.

Others showed these differences:
Q911-3, Q912-3, Q92-3, Q93-3, & Q96-3 measured 11.9 VDC instead of 10.9 VDC.
Q94-2 & Q95-2 measured 12.3 VDC instead of 11.3 VDC.
Q94-1 measured 12.3 VDC instead of 3.1 VDC.
Q95-1 measured 3.2 VDC instead of 3.3 VDC.
U2-1 measured 5.0 VDC instead of 4.2 VDC.
U2-3 measured 12.2 VDC instead of 10.9 VDC.

I've examined the components leading up to Q94-1 and they all seem externally okay to me. My ohm meter says they are
connected from one to the next.

My only electronics education is from reading and small experiments (I was a registered nurse before retirement), so I don't really know what to do next.
Can you all please help me figure this out?
I welcome your suggestions!

Thx, 
Hugh WM5J

P.S. I've constructed a toroid choke balun!!
H

Re: uBITX v3 Low Output

iz oos
 

I would check the values of the resistors around Q94


Il 06/giu/2019 04:20, "Hugh Debo via Groups.Io" <hughdebo=rocketmail.com@groups.io> ha scritto:
Hello all,
I have been reading this group for a while, but have just joined. Thanks for the add.
I've been a ham for only a couple of years, so this has been a lesson learned:

A couple of weeks ago I was experimenting on JS8 with a new antenna and produced enough 
common mode current to fry my Raspberry Pi and uBITX.  The RPI was replaced as were the finals
in the uBITX, but I had only about 1W output. I replaced the finals a second time, but the low output continues.

I downloaded the Diagnostic Guide and have measured all the TX Testpoints (Thanks Farhan!).
Using a battery at 12.3 VDC to power the uBITX, most Testpoints' measurements showed voltages slightly higher 
(+ 0.1-0.4 VDC) than the values listed in the Guide.

Others showed these differences:
Q911-3, Q912-3, Q92-3, Q93-3, & Q96-3 measured 11.9 VDC instead of 10.9 VDC.
Q94-2 & Q95-2 measured 12.3 VDC instead of 11.3 VDC.
Q94-1 measured 12.3 VDC instead of 3.1 VDC.
Q95-1 measured 3.2 VDC instead of 3.3 VDC.
U2-1 measured 5.0 VDC instead of 4.2 VDC.
U2-3 measured 12.2 VDC instead of 10.9 VDC.

I've examined the components leading up to Q94-1 and they all seem externally okay to me. My ohm meter says they are
connected from one to the next.

My only electronics education is from reading and small experiments (I was a registered nurse before retirement), so I don't really know what to do next.
Can you all please help me figure this out?
I welcome your suggestions!

Thx, 
Hugh WM5J

P.S. I've constructed a toroid choke balun!!
H

Re: Wanted

Balasubramanyan Cp
 

Dear CLUB MEMBERS/OM/YL,
Why not to get uBITX VERSION 5 LSB & CW MULTIBAND 10W QRP from OM Farhan, INDIA ?  It is very very very good IN ALL RESPECT !!!!!!
73s.  Email bsnvu2yc73s@....


On Wed, Jun 5, 2019 at 8:55 PM Adrian Chadd <adrian@...> wrote:
Yeah, hit me up. I'm local to you (east oakland) and can help you get
a HF transceiver.



-adrian

On Wed, 5 Jun 2019 at 10:38, Martin KM6TCD <peaceofandalus@...> wrote:
>
> Our club is looking for a built, tested, and working transceiver.
>
> Anyone got one they might sell?
>
> km6tcd
>



Re: uBITX v3 Low Output

Evan Hand
 

I would check C261.  It may have shorted.  That is the only way I can see to get 12v on pin 1 of Q94.

note: you can replace the SMT with through hole devices if you bend the leads right, and are careful when soldering.

FWIW, good luck and good hunting:)
73
Evan
AC9TU

Re: Wanted

Curt
 

Here I am thinking what does finding a XYZ transceiver in California (I presume for Field Day !) have to do with 'the price of tea in India' -- wait we have many folk here who live in India ! 

Everyone needs to remember this is a global list, for a fine global rig experience.  We bridge cultures - so let's not impose our 'western perspective' on everyone.  Those of us in the USA and Europe etc. are blessed to be 'invited' to participate in having (and modifying) one of these fine rigs. 

73

Curt

24 volt

Vaughn
 

Hi, got my BITX40 working and all looking good. Looking at doing some improving and read the final stage can be driven from 24 volt to give more transmission  power. It also looked at changing the heat-sink, as more power will produce more heat. I do not have much room for another heat-sink, so I thought I'd add a fan. 

Now the problem I have is the size of the fan. I found a nice PC cooling fan, only some 30mm square, trouble is on fitting it was very noisy., possibly as its a brush less one.

Still like the idea of a fan, so can anyone offer tips on how to remove the rf noise it makes, or where i can get a better fan of a similar size?

Many thanks Vaughn

Re: 24 volt

Jonas Sanamon
 

Hi Vaughn,

The rule of thumb is: The smaller the fan, the noisier it is.   If You're short on room for bigger heat sink, is it not possible to lead the heat to the box?

Best Regards,
Jonas - SM4VEY

Den tors 6 juni 2019 kl 16:57 skrev Vaughn <vlkteach@...>:

Hi, got my BITX40 working and all looking good. Looking at doing some improving and read the final stage can be driven from 24 volt to give more transmission  power. It also looked at changing the heat-sink, as more power will produce more heat. I do not have much room for another heat-sink, so I thought I'd add a fan. 

Now the problem I have is the size of the fan. I found a nice PC cooling fan, only some 30mm square, trouble is on fitting it was very noisy., possibly as its a brush less one.

Still like the idea of a fan, so can anyone offer tips on how to remove the rf noise it makes, or where i can get a better fan of a similar size?

Many thanks Vaughn

Re: KD8CEC: Changing the calibration data from within the Nextion GUI

Joe Puma
 

Mark, 

Can you use the Config menu, make a hot button somewhere that calls that page?

I think there is an empty icon on the config page we can use for that. 

Joe



On Jun 6, 2019, at 12:11 PM, Sam Tedesco <stedesco619@...> wrote:

is this what you're looking for? What size screen? <Capture4.PNG>

Re: 24 volt

Mark Hatch
 

Vaughn,

You might want to do some investigation on small linear amps that can be built for under <$100. uBitx.net has some references and there are several choices. There is one designed by a ham that won some price from the ARRL a while back that gets good reviews. (Wish I could remember his call letters - any help here?) Several ham kit suppliers, including the folks that make the cases for the ubitx sell a two board set (amp + filter). You can also get some on ebay for under $20, but you have to put them together. As designed, they are not that great. However, there are several blogs/websites that will help you fix them so they are respectable and on 12v give you between 40-60w (depending on band). 

Because I like a challenge, I bought the inexpensive one on ebay. Search for 

DIY Kits 70w SSB Linear HF Power Amplifier for Yaesu Ft-817 Kx3
There is a blog that also identifies a heat sink and box. Again you will want a filter system, and in my case, that cost several times more than the amp kit...

73
Mark





73
Mark
AJ6CU

Re: KD8CEC: Changing the calibration data from within the Nextion GUI

Mark Hatch
 

Joe,

I was thinking of doing that. And put a big disclaimer - "Don't play here"....

73
Mark

Re: KD8CEC: Changing the calibration data from within the Nextion GUI

Joe Puma
 

Its a good idea, I didn’t realize that page is not accessable from the Nextion. I resized it but thought nothing of it after that, lol oh boy. 

On Jun 6, 2019, at 12:27 PM, Mark Hatch <mark2382@...> wrote:

Joe,

I was thinking of doing that. And put a big disclaimer - "Don't play here"....

73
Mark

Re: 24 volt

Doug W
 

I've been very happy with this fan https://groups.io/g/BITX20/message/53168
I've been using it for close to a year and still no noticeable noise in my ears or antenna.
--
www.bitxmap.com