Date   
Re: Video on ND6T's Shuttle DDS Tuning

 

Oh, By the way, I did watch the video of yours in action, it looks very nice. I would be interested in looking at your sketch if you're going to make it public.

Joel KB6QVI

On Jan 14, 2017, at 6:58 AM, Don Cantrell via Groups.Io <nd6t_6@...> wrote:

I haven't received my new BITX with Raduino but from what I gather it uses the tuning knob to switch through frequency steps within a range that is selected from a larger series of steps at the far reaches of the knob's range.

I used a simple formula to change frequency at a rate determined by how far you twist the dial. An exponential differential. It makes for smooth tuning (at slow rates, just 3 Hz/second, adjustable) but it takes just 15 seconds to tune one end of the band to the other. A meld of analog and digital. Like having a variable speed motor on your dial and you with the throttle. Very quiet. Stable as your DDS chip. So much so that you can zero-beat an AM broadcast and listen to music as long as you like (wish those broadcasters would get off 40!). The voltage and S meter are separate.

Check out the BITXhacks web site. More there.

72,

-Don, ND6T

Re: Video on ND6T's Shuttle DDS Tuning

 

Hi Don,

I haven't received my Raduino that I ordered back in late Dec yet, so I breadboarded one on the bench to play around with and loaded the Raduino sketch onto a Arduino Nano to talk to the I2C buss on a si5351 breakout board. It appears to work very good using a high quality Linear pot and functions very much like yours does with the AD9850. At the extreme edges of the pot rotation the frequency changes rather fast either up or down depending on what end of the pot you are at, but as you near your frequency of choice you just rotate the pot to the middle position where it will go in very small increments until it stops by hitting dead center. I was able to tune any frequency I wanted right on. Are you using a pot also?

Joel KB6QVI

On Jan 14, 2017, at 6:35 AM, Joel Caulkins <caulktel@...> wrote:

What's the difference between this method of tuning and that of the Raduino? It appears to be the same only with a voltage readout.

Joel 
KB6QVI

On Jan 14, 2017, at 6:15 AM, Bill Meara via Groups.Io <n2cqr@...> wrote:

Folks have been having trouble Finding Don's Video.   So I put it on YouTube to make it more accessible:

Click on this link:





On Saturday, January 14, 2017 8:33 AM, Art Olson via Groups.Io <olsonaj6927@...> wrote:


Don

Has the shuttle sketch been posted?  If not I would like a copy

Art. N2AJO

Sent from my iPhone

On Jan 14, 2017, at 8:12 AM, ron van doremalen <ronvandoremalen@...> wrote:

Yes there is a link, and if you scroll down you will see the video referenced.
Typical for a blogspot is that there will be new articles posted.
 
 
Van: BITX20@groups.io [mailto:BITX20@groups.io] Namens Roy Appleton
Verzonden: 14 January, 2017 13:48
Aan: BITX20@groups.io
Onderwerp: Re: [BITX20] Video on ND6T's Shuttle DDS Tuning
 
Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!
 
Roy
WA0YMH
 
On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com
73  Bill
 
 
On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:
 
Great, only problem is that the web site doesn't have a link to any video!
 
Roy
WA0YMH
 
On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:
 

BITX Hacks

Modifications, Hacks and Fun with the BITX40 boards
 
 


Re: ending raduino upgrades

Glenn Laster
 

I would like to purchase the raduino upgrade. Let me know how to send payment with Paypal.

Thanks,
Glenn Laster
KJ4DQQ



On January 13, 2017, at 11:07 PM, Ashhar Farhan <farhanbox@...> wrote:

hfsigs team says they are ending the upgrades to olde boards that shipped without the raduino on 22nd jan.
if any on the group need the raduino drop a mail quickly to hfsignals@... to get the raduino board at 14 usd.
- f

Re: Video on ND6T's Shuttle DDS Tuning

Don, ND6T
 

I haven't received my new BITX with Raduino but from what I gather it uses the tuning knob to switch through frequency steps within a range that is selected from a larger series of steps at the far reaches of the knob's range.

I used a simple formula to change frequency at a rate determined by how far you twist the dial. An exponential differential. It makes for smooth tuning (at slow rates, just 3 Hz/second, adjustable) but it takes just 15 seconds to tune one end of the band to the other. A meld of analog and digital. Like having a variable speed motor on your dial and you with the throttle. Very quiet. Stable as your DDS chip. So much so that you can zero-beat an AM broadcast and listen to music as long as you like (wish those broadcasters would get off 40!). The voltage and S meter are separate.

Check out the BITXhacks web site. More there.

72,

-Don, ND6T

Re: Groups.io Set Up FAQ

Hans Summers
 

All agreed, Thanks Mark!

A couple of other things -

1) Unsubscribing from either the YahooGroup or the groups.io does not Unsubscribe you from the other! They are completely separate!

2) you cannot use your YahooGroup password for groups.io! Hopefully YOU are the only one that knows your Yahoo password! Not groups.io or anyone else!

3) Initially you have email list membership of the new group. You don't need to go to groups.io webpage at all ever, if all you want is the email discussion. You only need to go to the webpage and register a password for an account if you want to post messages via the website rather than email. Maybe it is needed to access files and messages archive search etc., because that needs login on the groups.io page - but I'm not sure about that.

73 Hans G0UPL 

Re: Video on ND6T's Shuttle DDS Tuning

 

What's the difference between this method of tuning and that of the Raduino? It appears to be the same only with a voltage readout.

Joel 
KB6QVI

On Jan 14, 2017, at 6:15 AM, Bill Meara via Groups.Io <n2cqr@...> wrote:

Folks have been having trouble Finding Don's Video.   So I put it on YouTube to make it more accessible:

Click on this link:





On Saturday, January 14, 2017 8:33 AM, Art Olson via Groups.Io <olsonaj6927@...> wrote:


Don

Has the shuttle sketch been posted?  If not I would like a copy

Art. N2AJO

Sent from my iPhone

On Jan 14, 2017, at 8:12 AM, ron van doremalen <ronvandoremalen@...> wrote:

Yes there is a link, and if you scroll down you will see the video referenced.
Typical for a blogspot is that there will be new articles posted.
 
 
Van: BITX20@groups.io [mailto:BITX20@groups.io] Namens Roy Appleton
Verzonden: 14 January, 2017 13:48
Aan: BITX20@groups.io
Onderwerp: Re: [BITX20] Video on ND6T's Shuttle DDS Tuning
 
Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!
 
Roy
WA0YMH
 
On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com
73  Bill
 
 
On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:
 
Great, only problem is that the web site doesn't have a link to any video!
 
Roy
WA0YMH
 
On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:
 

BITX Hacks

Modifications, Hacks and Fun with the BITX40 boards
 
 


Re: Video on ND6T's Shuttle DDS Tuning

Bill Meara
 

Folks have been having trouble Finding Don's Video.   So I put it on YouTube to make it more accessible:

Click on this link:





On Saturday, January 14, 2017 8:33 AM, Art Olson via Groups.Io <olsonaj6927@...> wrote:


Don

Has the shuttle sketch been posted?  If not I would like a copy

Art. N2AJO

Sent from my iPhone

On Jan 14, 2017, at 8:12 AM, ron van doremalen <ronvandoremalen@...> wrote:

Yes there is a link, and if you scroll down you will see the video referenced.
Typical for a blogspot is that there will be new articles posted.
 
 
Van: BITX20@groups.io [mailto:BITX20@groups.io] Namens Roy Appleton
Verzonden: 14 January, 2017 13:48
Aan: BITX20@groups.io
Onderwerp: Re: [BITX20] Video on ND6T's Shuttle DDS Tuning
 
Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!
 
Roy
WA0YMH
 
On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com
73  Bill
 
 
On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:
 
Great, only problem is that the web site doesn't have a link to any video!
 
Roy
WA0YMH
 
On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:
 

BITX Hacks

Modifications, Hacks and Fun with the BITX40 boards
 
 


Re: ending raduino upgrades

Ross Bell
 

Hi OM

Where can I purchase the Radiono board. Will they be available on the Hfsigs site?

Thanks Ross Bell K7RSB

Re: Video on ND6T's Shuttle DDS Tuning

Art Olson
 

Don

Has the shuttle sketch been posted?  If not I would like a copy

Art. N2AJO

Sent from my iPhone

On Jan 14, 2017, at 8:12 AM, ron van doremalen <ronvandoremalen@...> wrote:

Yes there is a link, and if you scroll down you will see the video referenced.

Typical for a blogspot is that there will be new articles posted.

 

http://bitxhacks.blogspot.com

 

Van: BITX20@groups.io [mailto:BITX20@groups.io] Namens Roy Appleton
Verzonden: 14 January, 2017 13:48
Aan: BITX20@groups.io
Onderwerp: Re: [BITX20] Video on ND6T's Shuttle DDS Tuning

 

Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!

 

Roy

WA0YMH

 

On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:

Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com

73  Bill

 

 

On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:

 

Great, only problem is that the web site doesn't have a link to any video!

 

Roy

WA0YMH

 

On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:

Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:

 

BITX Hacks

Modifications, Hacks and Fun with the BITX40 boards

 

 

Re: Idea for future versions of BITX

Klaus, DJ7OO
 

Ok, there also are good arguments for separating the VFO from main board. For me this also wasn't the mayor point. Compared to this, later use of easy pluggable BPF and LPF filters would be of higher interest.

Klaus, DJ7OO    

Re: Video on ND6T's Shuttle DDS Tuning

ron van doremalen (PA3FAT)
 

Yes there is a link, and if you scroll down you will see the video referenced.

Typical for a blogspot is that there will be new articles posted.

 

http://bitxhacks.blogspot.com

 

Van: BITX20@groups.io [mailto:BITX20@groups.io] Namens Roy Appleton
Verzonden: 14 January, 2017 13:48
Aan: BITX20@groups.io
Onderwerp: Re: [BITX20] Video on ND6T's Shuttle DDS Tuning

 

Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!

 

Roy

WA0YMH

 

On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:

Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com

73  Bill

 

 

On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:

 

Great, only problem is that the web site doesn't have a link to any video!

 

Roy

WA0YMH

 

On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:

Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:

 

BITX Hacks

Modifications, Hacks and Fun with the BITX40 boards

 

 

Re: Video on ND6T's Shuttle DDS Tuning

Roy Appleton
 

Bill, sorry but there is no link there for a video! I click on the photo in the blog post and it's just a photo, no video!

Roy
WA0YMH

On Jan 13, 2017 9:11 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Roy:  Click on the BITXHACKS link and the video Is there.   Or go to http://bitxhacks.blogspot.com
73  Bill



On Friday, January 13, 2017 8:18 PM, Roy Appleton <twelveoclockhigh@...> wrote:


Great, only problem is that the web site doesn't have a link to any video!

Roy
WA0YMH

On Jan 13, 2017 6:29 PM, "Bill Meara via Groups.Io" <n2cqr=yahoo.com@groups.io> wrote:
Don ND6T sent us a video on his intriguing method of tuning an AD9850 in his BITX 40 Module.  It works very well.  Take a look:




Re: Bitx40 to Bitx40 contact (video)

Peter Parker
 

Here's the other side of the contact - recorded by VK3SL from an incredibly quiet location 

https://www.youtube.com/watch?v=S5gYBwKvo5Q

The audio is squeaky but punchy which is what you want. 

Peter VK3YE

Template help

Michael Witham
 

Kit arrived but was not delivered, I have to pick it up! Postal deliveryman gets fruitcake for Christmas next year!

On that note, Does anyone have a template or dimensions required for mounting the hardware and panel? 

Thanks in advance!!

Mike/Kd4kld

Re: Idea for future versions of BITX

John VA7JBE
 

Changing the processor to something like a Teensy would allow for more digital modes to be added.  As it stands, CW is about all the Arduino is able to decode.  For something like PSK-31 more clock cycles and a better ADC are required.  I haven't checked the pin-out, but I would think that a few jumpers or even a PCB buffer would be enough to swap the Nano for some other development board.  This would also open up more options for digital filters and user interfaces.


Keeping the DDS and micro controller/processor separate from the main board allows for more flexibility in this regard, and I'd be happy to leave it that way.  On-board refinements for the BitX40 that stick with the original design goal of making a board for experimentation and customization might include adding even more places for people to plug into the signal, like in the IF, or refining what's already there (widening the bandwidth of the crystal filter comes to mind.)

Re: Idea for future versions of BITX

Jerry Gaffke
 

Putting an Si5351 down does not make it inflexible, it can always be disabled (like that analog VFO).  The SoftRock guys have an Si570 on some of their boards, but they took great pains to keep out any digital hash coming from the I2C host that drives it.  Could be that a small processor on the radio board would be better than an arduino, as the board designer could include series resistors to keep edge rates down and choose crystal frequencies that won't interfere.  And caps and ferrite beads and perhaps shielding.  Hard to say what will make the most sense for a $59 transceiver.

Jerry, KE7ER

ending raduino upgrades

Ashhar Farhan
 

hfsigs team says they are ending the upgrades to olde boards that shipped without the raduino on 22nd jan.
if any on the group need the raduino drop a mail quickly to hfsignals@... to get the raduino board at 14 usd.
- f

Re: Idea for future versions of BITX

John Backo
 

I am not so sure that this is a good idea.

If one reads the comments about the various DDS units, a common problem area is controlling the noise.
Putting the DDS on the same board as the rest of the rig would produce an inflexible layout which may
or may not be problematic. The chances are very good that it would be...

In a way, it is the inverse of the problems associate with something like the AD8307. That device is so sensitive
to such a wide range of signals that it is mandatory to shield it away from the rest of the circuits.
With a wide-ranging DDS/PLL unit, one might produce things like birdies which are very hard to trace
and isolate. It's hard enough to think about designing a single (or dual) IF rig covering all of HF
with a wide-ranging VFO and getting it right. Even the best of the HF receivers (like the Sangean)
have birdies. One can hear them just by tuning through the whole range...

Why invite trouble?

john
AD5YE

Re: High voltage and higher power output - what heat sink are you using?

Bill Meara
 

If you "remote" the 510 by adding even a small amount of wire you run the risk of turning that amplifier into a big ugly oscillator (been there, done that!). One of the reasons the BITX 40 amp is so trouble-free is that the layout is good and the leads are very short.  73  Bill N2CQR


On Friday, January 13, 2017 8:14 PM, don frasher via Groups.Io <donfrasher@...> wrote:


What I have done with other projects is to mount the output transistor remotely..  This allows for easy use of the case itself as a heat sink, as well as makes it easier to use "junk box" heat sinks that do not fit the printed circuit board.
  Surprised I have not seen this option all ready mentioned.. pretty simple matter of removing the 510 and running wire.

73
Don Frasher  AD7LL


Re: High voltage and higher power output - what heat sink are you using?

John Daly
 

Thanks, Bill. On another note, thanks for Soldersmoke and your QRP book, which I read 3-4 years old. Will take a look at your information. 73 - w4usf