Date   
Re: Nano Capability with 2.8" TFT Displays

Mike Woods
 

Already done with software for an Arduino Mega.   See:

73 Mike ZL1AXG ubitx.net


On Wed, 2 May 2018 at 8:44 AM, Kees T <windy10605@...> wrote:
DuWayne,

That is EXACTLY the type of thing I was talking about. Good for you !

73 Kees K5BCQ 

Re: ND6T AGC implementation for uBIT-X

Rag LB-Three-RE Stein-Roar
 

Hello

If someone in EU\Scandinavia needs PCB contact  me, as I also  have on hand some here.

Best Regards,
Stein-Roar Brobakken
LB3RE K3RAG 
Skype: lb3re.rag

2. mai 2018 kl. 01:38 skrev Bill Robbins <wa8cdu@...>:

Same for me.  One of each.

Bill

On 5/1/2018 10:46 AM, Paula Bailey-Stine wrote:
Likewise, one of each board for me.  Thanks again for doing this!

-KI4QGJ

Re: ND6T AGC implementation for uBIT-X

Gerry Hull
 

Put me down for two boards!

73 Gerry W1VE


On Tue, May 1, 2018 at 6:20 AM Ken <chase8043@...> wrote:
Hi Kees

If you're maintaining a list of people wanting kits, then I'll have 4 of each please.

73

Ken VA3ABN

On Mon, Apr 30, 2018 at 9:53 PM, Kees T <windy10605@...> wrote:
Ken,

As many as required.

We need to build and test a few when the boards arrive (plenty of volunteers) and then we'll let er' rip. Status will be posted here.
Assuming I can get 100% yield on the shear that's 160 AGC and 320 Click boards initially, more as needed after that. With the DHL shipping I'll have to figure out what the board cost is to me and go from there. You will be surprised, it will be quite low. What drives overall kit prices up is US/DX postage, PayPal fees, and packaging. Quantity is what makes it cheap.

73 Kees K5BCQ 


Re: ND6T AGC implementation for uBIT-X

Bill Robbins
 

Same for me.  One of each.

Bill

On 5/1/2018 10:46 AM, Paula Bailey-Stine wrote:
Likewise, one of each board for me.  Thanks again for doing this!

-KI4QGJ

Re: Sotabeams laserbeam digital audio filter with Ubitx

Charlie Morrison
 

Thanks Stein-Roar

73 de Charlie GI4FUE

-----Original Message-----
From: BITX20@groups.io [mailto:BITX20@groups.io] On Behalf Of Rag
LB-Three-RE Stein-Roar
Sent: 01 May 2018 23:04
To: BITX20@groups.io
Cc: Charlie Morrison <@gi4fue>
Subject: Re: [BITX20] Sotabeams laserbeam digital audio filter with Ubitx

Hello

there is an instruction here

https://www.sotabeams.co.uk/content/LASERBEAM-VARI.pdf

---
Best Regards Stein-Roar Brobakken
73s LB3RE

Den 2018-05-01 23:56, skrev Charlie Morrison:
Hi All

I have just purchased one of the Sota beams Digital filters for CW
audio, but am unsure of where to connect it in the audio chain.
Has anyone implemented one of these in their ubitx and can give some
pointers

Thanks in advance

Charlie GI4FUE


Links:
------
[1] https://groups.io/g/BITX20/message/47855
[2] https://groups.io/mt/18134673/735135
[3] https://groups.io/g/BITX20/post
[4] https://groups.io/g/BITX20/editsub/735135
[5] https://groups.io/g/BITX20
[6] https://groups.io/static/tos
[7] https://groups.io/g/BITX20/leave/defanged



---
This email has been checked for viruses by AVG.
http://www.avg.com

Re: VK2AUJ's µBITX project

Jerry Gaffke
 

Here's the LM7805 datasheet:
    http://www.ti.com/lit/ds/symlink/lm7800.pdf

On page 4, says the absolute maximum allowable junction temp when operating is 150 C.
At the very bottom of page 4, says the junction-to-case-(bottom)-thermal-resistance
for the TO220 package is 1.7 degrees C per Watt.
Halfway down the page under note 3 it states "For the TO-220 package (NDE), θJA is 54°C/W and θJC is 4°C/W"
The  θJC  and the junction-to-case-(bottom)-thermal-resistance to be different terms for the same thing.
Oh well, let's assume it's 4 degrees C per Watt, the larger of the two.

I measure the current from my 12v supply into the LM7805 on the Raduino at 60 ma.
So the LM7805 is dissipating (12v - 5v) * 0.060amps = 0.420 Watts
And we can calculate the junction temperature to be 4 * 0.420 = 1.68  degrees C higher than the TO220 tab.
The junction temperature is just a couple degrees C above that of the metal tab you see on the outside of the package.

Conclusion:  That LM7805 should be quite comfortable well past 100 degrees C,
the temperature at which a wet finger will sizzle when you touch the tab. 

Also under note 3 on page four is this:  "If the die temperature rises above 150°C,
the device goes into thermal shutdown"
So if the LM7805 ever does get dangerously hot, the Raduino will lose power till things cool off.

The 110 degrees F that Skip reported translates to (110-32)*5/9 = 43.33 degrees C.
He's got over one hundred degrees C to go before there's trouble.
On the other hand, electronics failures become far more frequent as temperatures go up.
Nothing wrong with keeping things cool.

Many semiconductor devices spec an absolute max junction temp of 70 or 85 degrees C.
This regulator is designed to dissipate power, the 150 degree max junction temp is rather unusual.

Jerry, KE7ER




On Tue, May 1, 2018 at 02:55 pm, Skip Davis wrote:
Oh yes I remember now I added one here because I wasn’t happy how hot that regulator was getting. I think I measured the temp at over 110 degrees F. Nice set up you have.
 

CW Button #ubitx

Lee
 

First, I am running 1.061.  I do not use CW so I skipped the key jack but put a button with resistor on the front panel .   My plans were when I wanted to tune my antenna with a LDG Z-11 Pro I would switch to CW mode, and push the button to send a nice signal to the tuner.  When the tuner was done I would change back to SSB mode.  What a nice surprise that I did not have to change modes.  Push the button and it would switch to CW and transmit and go back to where I was when letting go of the button.  Was this documented somewhere and I missed it?

Re: Amateur Radio Kit - Metal Cases - Traffic for those wondering..

Skip Davis
 

Yes I had a BC348Q on my nightstand as a teenager it sure pulled in a lot of stations  with a short wire antenna. I spent a lot of late nights with the headphones on listening to the hams an SWLing too. 

Skip Davis, NC9O

On May 1, 2018, at 12:33, Roy Appleton <twelveoclockhigh@...> wrote:

Lawrence, thanks for the heads up and the flash from the past, I had a BC348 as one of my first radios. I got my novice licence (WN0YMH) around 1972 while in Salina Ks!

Roy
WA0YMH

On Tue, May 1, 2018, 9:13 AM Lawrence Macionski via Groups.Io <am_fm_radio=yahoo.com@groups.io> wrote:
Received an email this morning  from   Sunil Kumar Lakhani at  http://amateurradiokits.in 
I added DHL shipping to the Semiens Gray uBITX case I ordered a while back.
I wanted to make sure he connected my DHL payment to the CASE payment. (Order #1554)
All is fine with my order and HE mentioned He  WILL BE shipping 50 cases by the weekend !!! (WOO! HOO!)

I know someone is going to ask- when did your order the case? . Let me check PAYPAL history -  MARCH 16th, 2018

So I hope this posting reduces email inquiries, so they can focus on shipping at hand.

This is as much fun as a Novice in 1965 with a homebrew  6V6 transmitter and a BC-348Q surplus receiver.

Larry W8LM
ARRL Life Member -Licensed 52 years.
Past President, 2 terms, VFW post 3115 Amateur Radio Club, WØVFW- Wichita, KANSAS


Re: Sotabeams laserbeam digital audio filter with Ubitx

Rag LB-Three-RE Stein-Roar
 

Hello

there is an instruction here

https://www.sotabeams.co.uk/content/LASERBEAM-VARI.pdf

---
Best Regards Stein-Roar Brobakken
73s LB3RE

Den 2018-05-01 23:56, skrev Charlie Morrison:

Hi All
I have just purchased one of the Sota beams Digital filters for CW
audio, but am unsure of where to connect it in the audio chain.
Has anyone implemented one of these in their ubitx and can give some
pointers
Thanks in advance
Charlie GI4FUE
Links:
------
[1] https://groups.io/g/BITX20/message/47855
[2] https://groups.io/mt/18134673/735135
[3] https://groups.io/g/BITX20/post
[4] https://groups.io/g/BITX20/editsub/735135
[5] https://groups.io/g/BITX20
[6] https://groups.io/static/tos
[7] https://groups.io/g/BITX20/leave/defanged

Sotabeams laserbeam digital audio filter with Ubitx

Charlie Morrison
 

Hi All

I have just purchased one of the Sota beams Digital filters for CW audio, but am unsure of where to connect it in the audio chain.
Has anyone implemented one of these in their ubitx and can give some pointers

Thanks in advance

Charlie GI4FUE

Re: VK2AUJ's µBITX project

Skip Davis
 

Oh yes I remember now I added one here because I wasn’t happy how hot that regulator was getting. I think I measured the temp at over 110 degrees F. Nice set up you have.


Skip Davis, NC9O

On May 1, 2018, at 16:47, Yves vk2auj <yves.bernier@...> wrote:

SD:  "I noticed you removed the heat sink on the regulator on the Raduino"
... I didn't know it needed a heatsink, it didn't come with one, meaning I haven't removed it.  I haven't notice them on the pictures when looking around.  I'll monitor the heat and install a heatsink and/or install the resistor.  If I was doing serious QRP, I'd probably install a second battery pack closer to 5v to run the Raduino.

Yves vk2auj/ve2auj

Re: µBITX keyer pull up resistor without jack #ubitx

Marko Pavlicevic
 

Also, you can add SMD 1205 version of 4.7K on the Raduino board.

Re: ws1t implementation with wd8cec firmware.

Nigel G4ZAL
 

@Vince,
Yes, with KD8CEC firmware in the Raduino, you have full CAT control over the uBitx (it 'thinks' it is an FT-817).

@ Dave,
I mean, the USB cable from your PC to the uBitx (and therefore the Raduino)
Check in Windows what has been assigned to the USB in terms of COM port.
Use: Start >> Control Panel >> Device Manager you should see something like this...




Nigel.

Re: ND6T AGC implementation for uBIT-X

Kees T
 

As they said in JAWS, "I think we need a bigger boat".

Gary, KJ5VW, has volunteered to pull together a spreadsheet with all the requests to date and those that were sent to me directly. That way we'll have a better idea of what we're looking at and I can focus on the Gerbers, parts, testing, and figuring out the least expensive way to distribute these "Mini Kits". Don't worry about "being late", this will continue for some time.

Right now I'm looking at;
1) Up to 3 (maybe 2, maybe more) kits and the associated schematic(s) in one regular envelope with a $0.71 "Non Machinable Surcharge" stamp. This works for the USA.
2) The parts (including headers and double sided tape) will be attached to the appropriate schematic with a strip of tape. Highly recommended that you remove the parts over something flat and not the shag carpet. Please refer to Don's, ND6T, website for detailed instructions on wiring it up to the uBITX and how to connect up the RF Gain potentiometer if you are wanting to use one.  
3) Payment to me by check to my address (good in QRZ and ARRL website) or if you choose PayPal, a PayPal surcharge adder to cover whatever they charge.
4) Larger orders broken up into multiple mailings.
5) DX postage and PayPal fees as appropriate.  

My objective is only to have fun with electronics, promote some great designs, and not to loose money.

73 Kees K5BCQ

  

Re: VK2AUJ's µBITX project

Jerry Gaffke
 

The Raduino does not come with a heat sink on the LM7805, and generally does not need one.
Some users do feel it gets hot enough for concern, and add either a heat sink or a dropping resistor.
Unlike the IRF510's, the tab of the LM7805 is at ground potential.


On Tue, May 1, 2018 at 01:47 pm, Yves vk2auj wrote:
SD:  "I noticed you removed the heat sink on the regulator on the Raduino"
... I didn't know it needed a heatsink, it didn't come with one, meaning I haven't removed it.  I haven't notice them on the pictures when looking around.  I'll monitor the heat and install a heatsink and/or install the resistor.  If I was doing serious QRP, I'd probably install a second battery pack closer to 5v to run the Raduino.

Re: A better Raduino PCB

Richard E Neese
 

Mike I want to order the ubitx assembled version .

what was the site again ?

Re: Need link to program for rarduino #bitx20help #bitx40help #bitx20

Allard PE1NWL
 

The standard firmware only provides basic LSB functionality.

Improved Raduino firmware for BitX40 supporting LSB, USB, CWL, CWU, and
other useful functionality is available at https://github.com/amunters

73 Allard PE1NWL

Re: VK2AUJ's µBITX project

Yves vk2auj
 

SD:  "I noticed you removed the heat sink on the regulator on the Raduino"
... I didn't know it needed a heatsink, it didn't come with one, meaning I haven't removed it.  I haven't notice them on the pictures when looking around.  I'll monitor the heat and install a heatsink and/or install the resistor.  If I was doing serious QRP, I'd probably install a second battery pack closer to 5v to run the Raduino.

Yves vk2auj/ve2auj

Re: Nano Capability with 2.8" TFT Displays

Kees T
 

DuWayne,

That is EXACTLY the type of thing I was talking about. Good for you !

73 Kees K5BCQ 

Re: Sunils cases

Jerry Gaffke
 

Wallowa county is 75 miles across, well protected on all sides by the Blues to the west,
the Wallows to the south, the Grande Ronde Canyon to the north, and Hell's Canyon on the east.
Far from any interstate.  County population of around 7000.  Zero stop lights. 
We're off grid, 50 miles north of the bustle created by the most of that 7000.
Delivery services are spotty, not enough hours in a day for the driver to get here and back.
On the plus side, any RFI is my own.

Jerry, KE7ER


On Tue, May 1, 2018 at 12:06 pm, Chuck, N1KGY wrote:
Sounds like here in northeastern NC -  The "official" population of my town is 117 people.