开云体育

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What’s CPK-4?

 

开云体育

I think it will be a 200mW CW transmitter and it will work with any SSB receiver you have on hand, including those Tecsun PL330, 365, 880, 990 and etc. I will ask for permission from the designer in Japan first.

See the prototype on my Choc board.



Thanks,
Adam
 

Hi Adam,
I can't open the link.? Am I doing something wrong?
Thanks !
Jim WB4ILP?

On Wed, Jan 10, 2024, 9:20 PM Adam Rong <rongxh@...> wrote:
I think it will be a 200mW CW transmitter and it will work with any SSB receiver you have on hand, including those Tecsun PL330, 365, 880, 990 and etc. I will ask for permission from the designer in Japan first.

See the prototype on my Choc board.



Thanks,
Adam
 

开云体育

Jim,

It is not your fault. Your Internet Service Provider is liable.

Thanks,
Adam

在 2024年1月11日，11:12，Jim Burns <outbackerwb4ilp@...> 写道：

?
Hi Adam,
I can't open the link.? Am I doing something wrong?
Thanks !
Jim WB4ILP?

On Wed, Jan 10, 2024, 9:20 PM Adam Rong <rongxh@...> wrote:
I think it will be a 200mW CW transmitter and it will work with any SSB receiver you have on hand, including those Tecsun PL330, 365, 880, 990 and etc. I will ask for permission from the designer in Japan first.

See the prototype on my Choc board.



Thanks,
Adam
 

One possibility could be an option where the oscillator is permanently on and only the PA is keyed.?

That could allow use with a CPK-3 receiver or others that don't have their own BFO.?

You will however need to provide some form of frequency offset, eg by switching in extra capacitance in the crystal oscillator circuit. The CAL switch could even be used for that if rewired.?

This is an example of me doing similar.?

https://www.youtube.com/watch?v=GGBvJZx69uI

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