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PIXIE2023: One of the cleanest output Pixie?

 

Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam
 

Hi Adam,
The link doesn't work for me.
Jim WB4ILP?

On Fri, Nov 10, 2023, 8:14 PM Adam Rong <rongxh@...> wrote:
Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam
 

开云体育

Jim,

In short, regular Chinese Pixie -20dBc, my Pixie2023 -46dBc per test result.

Thanks,

Adam

On 2023/11/13 16:14, Jim Burns wrote:

Hi Adam,
The link doesn't work for me.
Jim WB4ILP?

On Fri, Nov 10, 2023, 8:14 PM Adam Rong <rongxh@...> wrote:
Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam
 

Thanks Adam!

I understand that the modification consists in adding a capacitor.
What is the value and position?

73!
Costin, YO8RCD

?n lun., 13 nov. 2023 la 15:13, Adam Rong <rongxh@...> a scris:

Jim,

In short, regular Chinese Pixie -20dBc, my Pixie2023 -46dBc per test result.

Thanks,

Adam

On 2023/11/13 16:14, Jim Burns wrote:
Hi Adam,
The link doesn't work for me.
Jim WB4ILP?

On Fri, Nov 10, 2023, 8:14 PM Adam Rong <rongxh@...> wrote:
Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam
 

Hey Adam,
Congrats !? That's quite a bit better !
Great design but I haven't had time to build mine.??
Jim

On Mon, Nov 13, 2023, 8:13 AM Adam Rong <rongxh@...> wrote:

Jim,

In short, regular Chinese Pixie -20dBc, my Pixie2023 -46dBc per test result.

Thanks,

Adam

On 2023/11/13 16:14, Jim Burns wrote:
Hi Adam,
The link doesn't work for me.
Jim WB4ILP?

On Fri, Nov 10, 2023, 8:14 PM Adam Rong <rongxh@...> wrote:
Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam
 

开云体育

You can try adding 120pF or 100pF cap in parallel to 1uH inductor in the LPF. The performance is not promised as it also relates to the bias but it should improve.

Thanks,
Adam

在 2023年11月14日，07:18，Jim Burns <outbackerwb4ilp@...> 写道：

?
Hey Adam,
Congrats !? That's quite a bit better !
Great design but I haven't had time to build mine.??
Jim

On Mon, Nov 13, 2023, 8:13 AM Adam Rong <rongxh@...> wrote:

Jim,

In short, regular Chinese Pixie -20dBc, my Pixie2023 -46dBc per test result.

Thanks,

Adam

On 2023/11/13 16:14, Jim Burns wrote:
Hi Adam,
The link doesn't work for me.
Jim WB4ILP?

On Fri, Nov 10, 2023, 8:14 PM Adam Rong <rongxh@...> wrote:
Guys,

See my recent post about spurious test result about different Pixie designs.



Thanks,

Adam

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