Re: D4D Step 2 Failure

开云体育

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

#2918

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

#2917

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

image1.jpeg

Re: Sandwich for 40m KN-Q7A

#2916

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

Cell: 214-697-1729

sending messages

#2915

I would like to send messages.

--

Larry Lovell
73's N7RGW

Cell: 214-697-1729

Sandwich for 40m KN-Q7A

Bill Banner

#2914
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

#2913

Me too!

73 Steve

G1KQH

GQRP 11049

Re: GQRP member - 1st from China

#2912

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

#2911

开云体育

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

Show quoted text

From: [email protected] <[email protected]> on behalf of Adam Rong <rongxh@...>
Sent: 01 October 2019 13:23
To: [email protected] <[email protected]>
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

#2910

开云体育

I am also a GQRP member.

?

Gary W0ITT

?

Sent from for Windows 10

?

Show quoted text

From: [email protected] <[email protected]> on behalf of Adam Rong <rongxh@...>
Sent: Tuesday, October 1, 2019 7:23:32 AM
To: [email protected] <[email protected]>
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

#2909

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

#2908

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

#2907

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

My comments regarding QRPGuys DSB Digital Transceiver

#2906

开云体育

Guys,

I sent a post here. I appreciate the support of my original concept and wish good luck to QRPGuys on the commercial aspect.

Thanks,

Adam

Re: Rewind your Mini Wire Antenna

#2905

开云体育

Bret,

I mean the former. Actually there is a thicker sized toroid and you can purchase from mouser.

Thanks,

Adam

在 2019年9月17日，上午6:23，Charles Jessee <cbjesseeNH@...> 写道：

Show quoted text

Hi Adam - do you mean stack two FT-82-43 on top of one another to make a thicker “O” and winding around both? Or winding each individually and putting them in parallel?

Bret/N4SRN

Re: Rewind your Mini Wire Antenna

Charles Jessee

#2904

Hi Adam - do you mean stack two FT-82-43 on top of one another to make a thicker “O” and winding around both? Or winding each individually and putting them in parallel?

Bret/N4SRN

Re: D4D receive light only activates during transmit

Steve Goyette

#2903

Yes, turns out that was exactly what it was.? Thank you!

Steve

Re: Holiday project

#2902

开云体育

Guys,

As a post holiday project, I made a universal VXO.

Thanks,

Adam

在 2019年9月16日，上午8:24，Adam Rong via Groups.Io <rongxh@...> 写道：

Show quoted text

Guys,

I made another simple project, a regenerative receiver to cover 7-16 MHz. The specialty of this circuit is that a readily available shielded coil is used. The original is FCZ series, while my replacement is DIY7-14. It worked great. In the following article, I explained that I have changed the power supply to 4x AA sized Ni-MH batteries to make about 5V, so I can save a regulator 78L05, and 5V can power LM386 too. Also, I used varicap diodes instead of varicaps.

Thanks,
Adam

在 2019年9月14日，上午9:03，Adam Rong via Groups.Io <rongxh@...> 写道：

Guys,

It is a traditional holiday Mid Autumn Festival, or Moon Cake Festival. I made a small project based on the book of JF1RNR, whom I met in person in Japan Ham Fair.

This morning I tested the half watt transceiver in Century Park and successfully logged a QSO with BG5JNT.
<image1.jpeg>

Thanks,
Adam

Re: Holiday project

#2901

开云体育

Guys,

I made another simple project, a regenerative receiver to cover 7-16 MHz. The specialty of this circuit is that a readily available shielded coil is used. The original is FCZ series, while my replacement is DIY7-14. It worked great. In the following article, I explained that I have changed the power supply to 4x AA sized Ni-MH batteries to make about 5V, so I can save a regulator 78L05, and 5V can power LM386 too. Also, I used varicap diodes instead of varicaps.

Thanks,

Adam

Show quoted text

在 2019年9月14日，上午9:03，Adam Rong via Groups.Io <rongxh@...> 写道：

Guys,

It is a traditional holiday Mid Autumn Festival, or Moon Cake Festival. I made a small project based on the book of JF1RNR, whom I met in person in Japan Ham Fair.

This morning I tested the half watt transceiver in Century Park and successfully logged a QSO with BG5JNT.
<image1.jpeg>

Thanks,
Adam

Re: D4D receive light only activates during transmit

#2900

开云体育

Steve,

A local ham also encountered a similar problem. It does light on when the radio is powered on, although the LED is reversed. The explanation could be something like RF signal coupling.

Thanks,

Adam

Show quoted text

在 2019年9月10日，下午7:30，Steve Goyette <steve@...> 写道：

Well that doesn’t explain the green light coming on during transmit.

On Sep 9, 2019, at 10:56 PM, Adam Rong <rongxh@...> wrote:

Steve,

Apparently your green LED is polarity reversed.

Thanks,
Adam

在 2019年9月10日，上午11:52，qrpjl1kra <mx6s@...> 写道：

Steve,?

I saw your good soldering at a? glance.?
But usually this view deceived us. Check everything again.

>but once transmit is complete both lights go out.

Strange. I recommend check out voltages during this status. Then you will find out reason.
Relay or something around ?

Finding reason is part of hobby and fun !
Generally kit need effort to complete is worth more than soon completed.
You paid same price and you can play longer than the others.
Otherwise there are many completed product is the world.

Juncihi JL1KRA
?

----- Original Message -----
From:?Steve Goyette <steve@...>
To:?[email protected]?
Date:?2019/9/10, Tue 12:04
Subject:?Re: [crkits] D4D receive light only activates during transmit

Anyone have any ideas? Thinking I need to start by testing the transistors and work out from there.

On Sep 7, 2019, at 8:35 AM, steve via Groups.Io <steve@...> wrote:

Hi Adam,

Here you go:
<IMG_0898.jpeg><IMG_0897.jpeg><IMG_0896.jpeg><IMG_0895.jpeg>