Date   
Re: ND6T AGC implementation for uBIT-X

Zbigniew L
 

Hi, Please add me to the list 1 of each boards (smt)
Thanks...

Zbigniew L

Re: ND6T AGC implementation for uBIT-X

Richard Spohn
 

Forgot to say, I would like the thru-hole kits, not the SMT kits -
Rich Spohn WB2GXM

On 5/1/18, Richard Spohn <wb2gxm@...> wrote:
Kees, I would like to order one each of the AGC kit and the Pop filter
kit. I was waiting to see if you will have a "formal" url/store at
which to order the kits. As you direct, will send my info and use
Paypal (and pay the fees of course) -- what are the prices again?. --
Rich Spohn WB2GXM

On 5/1/18, Kees T <windy10605@...> wrote:
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: ND6T AGC implementation for uBIT-X

Richard Spohn
 

Kees, I would like to order one each of the AGC kit and the Pop filter
kit. I was waiting to see if you will have a "formal" url/store at
which to order the kits. As you direct, will send my info and use
Paypal (and pay the fees of course) -- what are the prices again?. --
Rich Spohn WB2GXM

On 5/1/18, Kees T <windy10605@...> wrote:
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: Arduino Projects...

walt hodges
 

I finally purchased mine and am waiting for free time--

On Tue, May 1, 2018 at 1:53 PM, William Cullison <wa8vih@...> wrote:
I purchased mine and it was well worth it.

Bill WA8VIH

On Tue, May 1, 2018 at 2:47 PM, Paul Schumacher via Groups.Io <wnpauls@...> wrote:
I agree with Arvo.  Do not download, it just encourages the download
site to steal more

Paul


On Tuesday, May 1, 2018, 1:26:03 PM CDT, Arvo KD9HLC via Groups.Io <arvopl=yahoo.com@groups.io> wrote:


On Tue, May 1, 2018 at 10:41 am, Jack Purdum wrote:
If you download the book and find it useful, then buy the book.
Do not try this at a regular bookstore.  If you do, you will appreciate the ethical and moral humbrage taken when you steal something, even with the intent of paying for it if it suits your fancy.

Downloading Jack's, or anybody else's intellectual property, whether it be books, articles, music, movies, dating advice, SDR firmware, without the permission of the owner is illegal.  It's also tacky and slimy.

Don't do it.



Re: ND6T AGC implementation for uBIT-X

John KC9OJV
 

Please add my name to that list.

John Greusel
KC9OJV

Re: ND6T AGC implementation for uBIT-X

AA7GW
 

I will certainly purchase a ready made PCB for this design.  I did ND6T's small PCB as he described, and wasn't happy with the result.  My work not his.  I did purchase a small lot of 2N7002 SMDs; more than I can ever use, so I would be willing to make this my contribution for getting this PCB produced.

De Gary AA7GW "73"

Re: VK2AUJ's µBITX project

Jerry Gaffke
 

That math may look silly.
We found that the silicon was just a couple degrees C hotter than the tab.

But the math becomes important on something like the IRF510.
Many Bitx40's are getting around 20 Watts out by raising the PA-PWR voltage to 24 volts.
Assuming 50% efficiency, that's another 20 Watts going up as heat in the single IRF510.
The IRF510 has nearly the same numbers as the LM7805:  150 C max,  junction to case of 3.5 C per Watt.
With 20 Watts dissipation, the die (junction) is  20*3.5 = 70 C hotter than the tab o the TO220 case.
And the tab is hotter than the heatsink, perhaps by quite a bit if the tab is electrically insulated.
So figure the die might be up to 100 C hotter than the heatsink.
The IRF510 heatsink should never exceed 50 C to keep the die below 150 C.

Jerry


On Tue, May 1, 2018 at 04:21 pm, Jerry Gaffke wrote:

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.

Re: Nano Capability with 2.8" TFT Displays

Rag LB-Three-RE Stein-Roar
 

Hello

Have anyone tried with 5 inch touch display also???

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

2. mai 2018 kl. 02:37 skrev Kees T <windy10605@...>:

Yes, Mike, that's a very nice implementation and others have done even more, such as using the Teensy 3.6 and will be presenting the details at FDIM this year..... but I was wondering what could be done with the existing Nano or Protoneer.

73 Kees K5BCQ

Re: ND6T AGC implementation for uBIT-X

lsgroff@...
 

Please put me down for two of each.

Thanks, 

Loren KA5U

Re: Nano Capability with 2.8" TFT Displays

Kees T
 

Yes, Mike, that's a very nice implementation and others have done even more, such as using the Teensy 3.6 and will be presenting the details at FDIM this year..... but I was wondering what could be done with the existing Nano or Protoneer.

73 Kees K5BCQ

Re: ND6T AGC implementation for uBIT-X

Gene Nitschke <genenitschke@...>
 

Please put me down for 2 each.  Appreciate all the hard work and willingness to share with us all.

Thanks,

Gene N2IJF




From: BITX20@groups.io <BITX20@groups.io> on behalf of Kees T <windy10605@...>
Sent: Monday, April 30, 2018 9:53 PM
To: BITX20@groups.io
Subject: Re: [BITX20] ND6T AGC implementation for uBIT-X
 
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: Calibration - my approach #ubitx

David Beal
 

Oh - and I was tuning by ear for lowest audio level on unwanted sideband (LSB) whilst also receiving the wanted USB. 
--
Dave Beal
AE6RQ

Re: Calibration - my approach #ubitx

David Beal
 

Hi John - 

Under the uBITX menu, I selected "Setup On" 
Exit the menu
Re-enter the menu
Scroll past the "Exit menu" option until you get to "Set the BFO" 
Press tuning knob, tweak BFO setting, press PTT (not the Function switch) to confirm and store. 
Do one final "read from uBITX" in uBITX_Manager and you should see the new value.   Press uBITX_Manager "decode =>" and then save your configuration file for future tweaking. 

--
Dave Beal
AE6RQ

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?