Date   
2020 new year announcement

Adam Rong
 

Folks,

Happy new year!

2020 is the 9th year of CRKits.COM and I am glad I am still active with this side business, although I travel 95% for my professional work.

In 2020, my US distributor Larry will close his web site and only support local customers via his facebook page. I have decided to revisit my pricing strategy and would cut about 10% for all my offerings. Please visit my web store to take a look.
http://crkits.com

As a gift to my customers, I would offer free main PCB of KN-Q7A or CS-series if you still remember. Please follow this thread if you need one or two piece. Please PayPal 5 USD for the postage. You can also request key parts to ship along if I still have them.

73 de BD6CR
Owner of CRKits.COM

Re: Replacing BD139 with 2SC1969 or equivalent RF Transistor

Nigel Young
 

Hi Nick,

The biasing would need a little alteration but it should work fine as is. It also depends of course on what tcvr you are altering.
What will get the most gain is isolating the finals from their original supply voltage and increasing that from say 12v to 24v.
Since you are on this forum I expect you are using CRkit products. The spectral output is not great on these products, but they're built to a price point and simplicity.

If you really want to do a good job, dump the original finals and build a daughter board using your silicons.

It's really a chore of diminishing returns, those transistors are expensive compared to the BD139 and although you can push your output a little higher, 12w as I remember, there are cheaper easier options.

Try look for a design you can build outboard, maybe with a push pull circuit or doubled up finals.

Good luck, Nigel de ZL1NAY

On Mon., 30 Dec. 2019, 9:15 am Nicholas Triantafyllou, <nicholas.triantafyllou@...> wrote:
Hi

Has anyone experimented with replacing the BD139 output transistor with a 2SC1969 or other transistor to increase the power output? It seems technically possible...

Thanks

Nicholas 2E0GKG

Re: Replacing BD139 with 2SC1969 or equivalent RF Transistor

Steven Weber
 

You would need a lot more drive to get any significant power out of the 2SC1969, which means adding at least one more stage. It would be easier to drive the 2SC1969 with the existing BD139. All in all, not work the effort.

 

Steve KD1JV

 

Hi

Has anyone experimented with replacing the BD139 output transistor with a 2SC1969 or other transistor to increase the power output? It seems technically possible...

Thanks

Nicholas 2E0GKG

 

Replacing BD139 with 2SC1969 or equivalent RF Transistor

Nicholas Triantafyllou
 

Hi

Has anyone experimented with replacing the BD139 output transistor with a 2SC1969 or other transistor to increase the power output? It seems technically possible...

Thanks

Nicholas 2E0GKG

Re: New Enhanced Pixie Kit

AOLMemberServiceBOBAF2DX
 

OK,
Thanks Adam.
BOB AF2DX


-----Original Message-----
From: Adam Rong <rongxh@...>
To: crkits <crkits@groups.io>
Sent: Sat, Dec 14, 2019 6:50 am
Subject: Re: [crkits] New Enhanced Pixie Kit

Bob,

Sorry but the seller will only sell in China.

Thanks,
Adam

在 2019年12月12日,下午8:31,AOLMemberServiceBOBAF2DX via Groups.Io <beargyrils@...> 写道:


Hi Adam,
Where can this kit be purchased?
THANK YOU
BOB AF2DX
Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.




-----Original Message-----
From: Adam Rong <rongxh@...>
To: crkits <crkits@groups.io>
Sent: Thu, Dec 12, 2019 12:06 am
Subject: [crkits] New Enhanced Pixie Kit

Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

Re: New Enhanced Pixie Kit

Adam Rong
 

Bob,

Sorry but the seller will only sell in China.

Thanks,
Adam

在 2019年12月12日,下午8:31,AOLMemberServiceBOBAF2DX via Groups.Io <beargyrils@...> 写道:


Hi Adam,
Where can this kit be purchased?
THANK YOU
BOB AF2DX
Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.




-----Original Message-----
From: Adam Rong <rongxh@...>
To: crkits <crkits@groups.io>
Sent: Thu, Dec 12, 2019 12:06 am
Subject: [crkits] New Enhanced Pixie Kit

Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

Re: Initial configuration of D4D

Adam Rong
 

It is Mac version WSJT-x.

Thanks,
Adam

在 2019年12月14日,上午7:16,skinne13 via Groups.Io <skinne13@...> 写道:

In D4D Kit Assembly Manual, Rev.D, pages 21-22, there is text: "In setting windows Radio tab, choose Rig to none and PTT to VOX".
What is the application where this configuration is to be performed, and where is download website? It does not appear to be part of WSJT-X.

Re: Initial configuration of D4D

Bryan Brauer
 

Danel,

WSJT-X>File>Settings>Radio.


Bryan B. Brauer AI6B

Re: Initial configuration of D4D

Daniel Tickell
 

Thats part of WSJT-X.....


On Fri, Dec 13, 2019 at 3:16 PM skinne13 via Groups.Io <skinne13=aol.com@groups.io> wrote:
In D4D Kit Assembly Manual, Rev.D, pages 21-22, there is text: "In setting windows Radio tab, choose Rig to none and PTT to VOX".
What is the application where this configuration is to be performed, and where is download website? It does not appear to be part of WSJT-X.

Initial configuration of D4D

skinne13@...
 

In D4D Kit Assembly Manual, Rev.D, pages 21-22, there is text: "In setting windows Radio tab, choose Rig to none and PTT to VOX".
What is the application where this configuration is to be performed, and where is download website? It does not appear to be part of WSJT-X.

Re: New Enhanced Pixie Kit

Donald Purnhagen <dpurnhagen@...>
 

I was intrigued by that bug as well. A little searching opened up a whole world of Keys made from binder clips. Start with this YouTube video.

Re: New Enhanced Pixie Kit

AOLMemberServiceBOBAF2DX
 

Hi Adam,
Where can this kit be purchased?
THANK YOU
BOB AF2DX
Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.




-----Original Message-----
From: Adam Rong <rongxh@...>
To: crkits <crkits@groups.io>
Sent: Thu, Dec 12, 2019 12:06 am
Subject: [crkits] New Enhanced Pixie Kit

Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

Re: New Enhanced Pixie Kit

Juha Lindfors
 

What is the paddle on the box in the last picture?

73 !

Juha oh8cw

to 12. joulukuuta 2019 klo 7.06 Adam Rong <rongxh@...> kirjoitti:

Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

Re: New Enhanced Pixie Kit

gm0sim@...
 

that is one cute little rig.

my only trivial suggestion would be to use a phono socket as a cheap/cheerful/robust antenna connector to avoid the cost/fragility of the sma socket (and sma/bnc adaptor we need too... the leverage on them makes it all to easy to wrench the main socket out of the board whereas a sharp pull on the coax simply disconnects a phono without damage)

regards - Ian   gm0sim


From: crkits@groups.io <crkits@groups.io> on behalf of Adam Rong <rongxh@...>
Sent: 12 December 2019 05:06
To: crkits@groups.io <crkits@groups.io>
Subject: [crkits] New Enhanced Pixie Kit
 
Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

New Enhanced Pixie Kit

Adam Rong
 

Folks,

Designed by BG1REN and kitted by BD4KG, the new enhanced pixie board kit features keyer, side tone and TX/RX frequency offset. 40m and 20m versions are now available.

Re: D4D mods

Bryan Brauer
 

I made the changes suggested by WB2LDH.  The most power out, with both WSJT-W and soundcard at max, is 600mW as measured by my Elecraft W1 power meter.

Can you suggest a value at for capacitor parallel to C11 other than 56pf that might boost this a bit.

Bryan B. Brauer, PE
Consulting Engineer

Re: HT-1, Using both AF/RF controls

John
 

Hi Frank and thank you for your reply. The only rig I have ever had is my SG-2020 and rarely use it. However I thought since I have the parts I might as well install it. Next I want to install the battery option but will add a switch to cut the B+ on the battery so I can use an external battery if needed. Again thank you very much.

John K2JHU...

On Mon, Dec 9, 2019 at 10:59 AM Frank <prpntfmr@...> wrote:
Hi John,
  Yes I added the RF control to the back panel above the power jack.
Just position it so that it will fit in the corner with just enough room to
clear the top and the side and the power jack.
  So far I have found that I have rarely had to use it.
73's  Frank KB4VU

Re: HT-1, Using both AF/RF controls

Frank
 

Hi John,
  Yes I added the RF control to the back panel above the power jack.
Just position it so that it will fit in the corner with just enough room to
clear the top and the side and the power jack.
  So far I have found that I have rarely had to use it.
73's  Frank KB4VU

HT-1, Using both AF/RF controls

John
 

I was wondering if any of the HT-1 user had added the RF control while leaving the AF control connected. If so where on the back panel did you drill the hole for the control. Thank you.

John K2JHU...

Re: Mini FT8 Station

Thomas Mize KJ4GK
 

Thanks Jim, your reply did help.

I have already purchased the Sunfounder open box(it says something about a plastic corner being chipped). I am going to use your setup as a reference for this.

One thing I am eager to find out is if I can find out a way to remotely control the screen of this from another windows desktop. As this is what I am doing right now with a windows tablet with my regular station. The tablet is beside my radio and I use Google Remote Desktop to control the tablet just as if i was sitting in front of it.

It would be really new to be able to store this setup in my storage room closer to an antenna away from my regular one so that it can be ran like you will be doing with solar. I can use a photo switch relay combo to switch either to another battery bank that was charged during the day for night time use or to mains power. I'll have to wait and see.

Well anyway buddy, if you get a chance to make a video of this in operation, and maybe showing a few software shots and maybe some hints on how you got the software all setup would be great. At very least maybe just some footage of the software in action would be really cool.

If not that is fine I am very happy with the info you have already shared. Have fun buddy.

Thomas,

KJ4GK