Date   
Re: Handedness of winding doesn't matter?

Adam Rong
 

There is no right way. Either way is okay.

Thanks,
Adam

在 2019年10月15日,上午8:44,Bryan Brauer <bryan@...> 写道:

Why not just rewind the right way?

Bryan B. Brauer, PE
Consulting Engineer


On Mon, Oct 14, 2019 at 2:18 PM Adrian Boyko <adrianboyko@...> wrote:

Hi, 

I just wound this with the opposite handedness of the example in the build instructions. I just wanted to be doubly sure that it doesn't matter, for this particular component. It's fine this way, right? I'm just concerned that there might be some subtle board layout consideration that makes it better to wind it the other way.

     

Thanks,
Adrian, KR0DAK

Re: Handedness of winding doesn't matter?

Bryan Brauer
 

Why not just rewind the right way?

Bryan B. Brauer, PE
Consulting Engineer


On Mon, Oct 14, 2019 at 2:18 PM Adrian Boyko <adrianboyko@...> wrote:

Hi, 

I just wound this with the opposite handedness of the example in the build instructions. I just wanted to be doubly sure that it doesn't matter, for this particular component. It's fine this way, right? I'm just concerned that there might be some subtle board layout consideration that makes it better to wind it the other way.

     

Thanks,
Adrian, KR0DAK

Re: Handedness of winding doesn't matter?

Larry Lovell
 

Direction of winding does not matter.

--
Larry Lovell
73's N7RGW
http://QRVTronics.com
Cell: 214-697-1729

Re: Handedness of winding doesn't matter?

Leland L. Bahr
 

In your application it should make no difference.  It's when you are winding a two or more winding transformer that it becomes a problem as the wires won't come off the core in the proper arrangement.  Electrically it makes no difference.  In other words the physical layout for the board holes is what matters.  Electrically there would be no difference.

Lee, w0vt

On 10/14/2019 3:05 PM, Adrian Boyko wrote:

Hi, 

I just wound this with the opposite handedness of the example in the build instructions. I just wanted to be doubly sure that it doesn't matter, for this particular component. It's fine this way, right? I'm just concerned that there might be some subtle board layout consideration that makes it better to wind it the other way.

     

Thanks,
Adrian, KR0DAK

Handedness of winding doesn't matter?

Adrian Boyko
 


Hi, 

I just wound this with the opposite handedness of the example in the build instructions. I just wanted to be doubly sure that it doesn't matter, for this particular component. It's fine this way, right? I'm just concerned that there might be some subtle board layout consideration that makes it better to wind it the other way.

     

Thanks,
Adrian, KR0DAK

Re: D4D Step 2 Failure

Dr. Pedro E. Colla (LU7DID)
 

Hi Adam,

Thank you for your quick response. It turned out to be a cold soldering point on R16 GND side.

73 Pedro, LU7DID

File updated in crkits@groups.io

crkits@groups.io Notification <crkits+notification@...>
 

Hello,

This email message is a notification to let you know that the following files have been updated in the Files area of the crkits@groups.io group.

Uploaded By: Adam Rong <rongxh@...>

Description:
In this version, we have updated the modifications to include the latest information.

Cheers,
The Groups.io Team

Re: D4D Step 2 Failure

Adam Rong
 

Colla,

Sorry for replying late. Check if you have swapped Q5 and Q6. 2N3906 and 3904 are very similar looking.

Thanks,
Adam

在 2019年10月14日,上午7:48,Dr. Pedro E. Colla (LU7DID) <lu7did@...> 写道:

Hi,

Building the D4D at Step 2 WITH the MOD on pag 25 implemented when testing the step upon powering the circuit the relay clicks but the amber LED goes and stays on.

On previous STEP 1 testing the green LED went ON correctly.

Any hint?

73 de Pedro, LU7DID

D4D Step 2 Failure

Dr. Pedro E. Colla (LU7DID)
 

Hi,

Building the D4D at Step 2 WITH the MOD on pag 25 implemented when testing the step upon powering the circuit the relay clicks but the amber LED goes and stays on.

On previous STEP 1 testing the green LED went ON correctly.

Any hint?

73 de Pedro, LU7DID

SST on Choc perfboard

Adam Rong
 

Folks,

It is BG5JNT’s FB project. He built many projects based on my Choc perfboard and SST is his latest one. Nice design from NorCal in late 1990’s.


Thanks,
Adam

Re: Sandwich for 40m KN-Q7A

Larry Lovell
 

There are a few sandwich kits available from QRVTronics.com.  There is also an option for a frequency display for a few bucks more.  

--
Larry Lovell
73's N7RGW
http://QRVTronics.com
Cell: 214-697-1729

sending messages

Larry Lovell
 

I would like to send messages.

--
Larry Lovell
73's N7RGW
http://QRVTronics.com
Cell: 214-697-1729

Sandwich for 40m KN-Q7A

Bill Banner
 
Edited

I have a 40m KN-Q7A that has been shelved for a while. I see there was an excellent looking kit called Sandwich VFO that greatly enhances the radio but shows as sold out. Is there a plan to re-introduce either the kit or the assembled module in the future?

Thanks!

Bill K7WCB

Re: GQRP member - 1st from China

G1KQH
 

Me too!

73 Steve

G1KQH

GQRP 11049

Re: GQRP member - 1st from China

Adam Rong
 

Thanks for the feedback. GQRP is really an international club with a long history. I believe more Chinese QRPer will consider joining after my introduction.

Thanks,
Adam

Re: GQRP member - 1st from China

gm0sim@...
 

I'm a member too.... Ian gm0sim


From: crkits@groups.io <crkits@groups.io> on behalf of Adam Rong <rongxh@...>
Sent: 01 October 2019 13:23
To: crkits@groups.io <crkits@groups.io>
Subject: [crkits] GQRP member - 1st from China
 
Folks,

I just joined the GQRP club and it turned out that I am the first one from China. The SPRAT member quarterly journal is very nice. Let me know if you are also a member.

Thanks,
Adam

Re: GQRP member - 1st from China

Gary Freeman
 

I am also a GQRP member.

 

Gary W0ITT

 

Sent from Mail for Windows 10

 


From: crkits@groups.io <crkits@groups.io> on behalf of Adam Rong <rongxh@...>
Sent: Tuesday, October 1, 2019 7:23:32 AM
To: crkits@groups.io <crkits@groups.io>
Subject: [crkits] GQRP member - 1st from China
 
Folks,

I just joined the GQRP club and it turned out that I am the first one from China. The SPRAT member quarterly journal is very nice. Let me know if you are also a member.

Thanks,
Adam

GQRP member - 1st from China

Adam Rong
 

Folks,

I just joined the GQRP club and it turned out that I am the first one from China. The SPRAT member quarterly journal is very nice. Let me know if you are also a member.

Thanks,
Adam

Re: New Record: D4D QSO Distance

Adam Rong
 

Announcement:

I already sent a 40m D4D kit to BG7IKK as the Q3 contest 1st place award.

Thanks,
Adam

Re: New Record: D4D QSO Distance

Adam Rong
 

Guys,

The contest is still on. If you have better results than 13499km, please submit before September 30. The award is a D4D kit and you can define the band.

Thanks,
Adam