Date   

QP-7C 2nd test build in new space

Adam Rong
 

Folks,


The output is quite big and clean. Perhaps 12V is too hot.

Thanks,
Adam


Re: QP-7C: A new kit

marjannorm
 

Put me down for one.....!
Norm vk5gi
McLaren Vale
South Australia


Re: QP-7C: A new kit

Martin Peters
 

Yes, where are these choc boards available, please?
73 - Martin, G4EFE


Re: QP-7C: A new kit

Nigel Young ZL1NAY
 

This looks good Adam, well done and tiny, I will have to buy some of your choc boards.


On Wed, Apr 7, 2021 at 7:29 PM Adam Rong <rongxh@...> wrote:
https://mp.weixin.qq.com/s/Tc7Apxnqo3uoIbbaSID5oQ

Thanks,
Adam

在 2021年4月7日,上午10:53,Nigel Young <multilec@...> 写道:


Well, come on Adam, give us a sneak preview. Not everyone gets the sprat magazine. I don't think it gets much simpler than the MRX unless you go for a Regen receiver.

Kia Kaha

On Wed, Apr 7, 2021, 1:03 PM Adam Rong <rongxh@...> wrote:
Thanks BG2KAJ. The MRX-40 is definitely a classic. My solution will be something on one unit of my Choc board. Yes, the LCR designed by myself which is published on Sprat #184.


Thanks,
Adam

在 2021年4月6日,下午3:23,Jizhuang Ma <bg2kaj@...> 写道:

Hi
I'm not Adam but I thought MRX-40 would be a good choice.
Article about MRX-40 on ARRL website:http://www.arrl.org/files/file/Technology/pdf/99759.pdf

BG2KAJ
Ma

<image0.jpeg>



--
Best Regards,

Nigel Young


Re: QP-7C: A new kit

Adam Rong
 

在 2021年4月7日,上午10:53,Nigel Young <multilec@...> 写道:


Well, come on Adam, give us a sneak preview. Not everyone gets the sprat magazine. I don't think it gets much simpler than the MRX unless you go for a Regen receiver.

Kia Kaha

On Wed, Apr 7, 2021, 1:03 PM Adam Rong <rongxh@...> wrote:
Thanks BG2KAJ. The MRX-40 is definitely a classic. My solution will be something on one unit of my Choc board. Yes, the LCR designed by myself which is published on Sprat #184.


Thanks,
Adam

在 2021年4月6日,下午3:23,Jizhuang Ma <bg2kaj@...> 写道:

Hi
I'm not Adam but I thought MRX-40 would be a good choice.
Article about MRX-40 on ARRL website:http://www.arrl.org/files/file/Technology/pdf/99759.pdf

BG2KAJ
Ma

<image0.jpeg>


Re: QP-7C: A new kit

Nigel Young ZL1NAY
 

Well, come on Adam, give us a sneak preview. Not everyone gets the sprat magazine. I don't think it gets much simpler than the MRX unless you go for a Regen receiver.

Kia Kaha

On Wed, Apr 7, 2021, 1:03 PM Adam Rong <rongxh@...> wrote:
Thanks BG2KAJ. The MRX-40 is definitely a classic. My solution will be something on one unit of my Choc board. Yes, the LCR designed by myself which is published on Sprat #184.


Thanks,
Adam

在 2021年4月6日,下午3:23,Jizhuang Ma <bg2kaj@...> 写道:

Hi
I'm not Adam but I thought MRX-40 would be a good choice.
Article about MRX-40 on ARRL website:http://www.arrl.org/files/file/Technology/pdf/99759.pdf

BG2KAJ
Ma


Re: QP-7C: A new kit

Adam Rong
 

Thanks BG2KAJ. The MRX-40 is definitely a classic. My solution will be something on one unit of my Choc board. Yes, the LCR designed by myself which is published on Sprat #184.


Thanks,
Adam

在 2021年4月6日,下午3:23,Jizhuang Ma <bg2kaj@...> 写道:

Hi
I'm not Adam but I thought MRX-40 would be a good choice.
Article about MRX-40 on ARRL website:http://www.arrl.org/files/file/Technology/pdf/99759.pdf

BG2KAJ
Ma


Re: QP-7C: A new kit

Jizhuang Ma
 

Hi
I'm not Adam but I thought MRX-40 would be a good choice.
Article about MRX-40 on ARRL website:http://www.arrl.org/files/file/Technology/pdf/99759.pdf

BG2KAJ
Ma


Re: QP-7C: A new kit

Cierra
 

Thanks for the update Adam! What receiver kit would you recommend to go with this transmitter?


Re: QP-7C: A new kit

Adam Rong
 

Hi VU3MUG,

The price will be announced later on the formal release date. It is a small kit so the price is not high.

Thanks,
Adam, BD6CR

2021年4月4日 下午7:59,Ishwar Rao Sutrave <vu3mug@...> 写道:

Hi
what will be the cost
VU3MUG 
india

On Sun, 4 Apr 2021, 9:04 am Adam Rong, <rongxh@...> wrote:
You can refer to the manual in English to learn more about the classic ROSE kit. BTW, the original kit was released in the year that I was born.
http://www.mizuhoradio.org/manuals/QP-7/qp721a.pdf

Thanks,
Adam




Re: QP-7C: A new kit

Ishwar Rao Sutrave <vu3mug@...>
 

Hi
what will be the cost
VU3MUG 
india

On Sun, 4 Apr 2021, 9:04 am Adam Rong, <rongxh@...> wrote:
You can refer to the manual in English to learn more about the classic ROSE kit. BTW, the original kit was released in the year that I was born.
http://www.mizuhoradio.org/manuals/QP-7/qp721a.pdf

Thanks,
Adam


Re: QP-7C: A new kit

Adam Rong
 

You can refer to the manual in English to learn more about the classic ROSE kit. BTW, the original kit was released in the year that I was born.
http://www.mizuhoradio.org/manuals/QP-7/qp721a.pdf

Thanks,
Adam


QP-7C: A new kit

Adam Rong
 

Folks,

QP-7C is a CW transmitter kit of 3 transistors. It is a replica of the classic MIZUHO QP-7 on three units of my Choc Perfboard. Besides a few solder bridges on the bottom side, there is no need for additional jumpers. The output is more than 3 watt at 12V and the spectrum purity is -53 dBc or better. Even you use with 8.4V batteries, you still can expect 1 watt RF output which is ideal for outdoor operations with a small receiver. The heat sink is not too hot even I transmit for a long time. Please stay tuned for more information.



Thanks,
Adam


Re: Now back to normal

Adam Rong
 

Hi Graeme,

You can refer to the information on my web store at
http://crkits.com/

You can PayPal directly to rongxh@... and leave your ship-to-address. If you don't need express shipping, you can save a few dollars.

Thanks,
Adam


Re: Now back to normal

graemea58@...
 

Hi Adam,

Good news you are back.

I'm am in Australia trying to order a CV-40V complete kit.

How do I order and pay for this?

Best regards,
Graeme Anderson


On Wed, 31 Mar. 2021, 11:38 Adam Rong, <rongxh@...> wrote:
Folks,

I have just completed moving and am ready to get back to normal. Currently, I have the following kits in stock.

CS-40V SSB Transceiver Kit with Speaker Microphone
R3500D 3.5-3.6MHz ARDF Receiver Kit
CRK-10A CW Transceiver Kit

D4D and Mini Wire Antenna kits will be resumed shortly.

Thanks,
Adam


Now back to normal

Adam Rong
 

Folks,

I have just completed moving and am ready to get back to normal. Currently, I have the following kits in stock.

CS-40V SSB Transceiver Kit with Speaker Microphone
R3500D 3.5-3.6MHz ARDF Receiver Kit
CRK-10A CW Transceiver Kit

D4D and Mini Wire Antenna kits will be resumed shortly.

Thanks,
Adam


Re: Using D4D for Hellschreiber?

Carl Weiberg
 

I bought crystals to change the unit to WSPR but was told the frequency stability would be an issue to just install crystals. 

iPhone Aloha

On Mar 23, 2021, at 9:44 AM, Cierra <dubosec@...> wrote:



[Edited Message Follows]

Yeah. I was hoping for something along these lines, but I deleted my initial post because I figured with the crystal it would be difficult without additional hardware, like the keyer mentioned in the article.


--
CW


Re: Using D4D for Hellschreiber?

Cierra
 
Edited

Yeah. I was hoping for something along these lines, but I deleted my initial post because I figured with the crystal it would be difficult without additional hardware, like the keyer mentioned in the article.


Re: Using D4D for Hellschreiber?

Jizhuang Ma
 

HI

Sending everything that goes into the audio port is possible though you have to modify the xtal to another freq as F6GWE said.

Ma BG2KAJ


Re: Using D4D for Hellschreiber?

F6GWE
 

Hello

On FT8 fréquency???

73 
Patrick
F6GWE

De : crkits@groups.io <crkits@groups.io> de la part de Cierra <dubosec@...>
Envoyé : lundi 22 mars 2021 18:30
À : crkits@groups.io <crkits@groups.io>
Objet : [crkits] Using D4D for Hellschreiber?
 

Greetings,

I am on the verge of finishing my D4D 40m kit, and I am curious if connected to the correct software, could I use the D4D to transmit and receive Hellschreiber?

Thanks,

Cierra KN4LIA

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