That mod also fixes the problem that a lot of those generic Si5351A modules?are substantially off frequency. The branded Adafruit ones they are based on are generally closer. (Not illegal, by the way, the Adafruit design is open source hardware, you just have to remove the branding.)

On Sun, Mar 10, 2024 at 4:04?AM Adam Rong <rongxh@...> wrote:

Guys,

Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

• The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order
  
• The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order
  

Thanks,

Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

?

Guys,

Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

• The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order
  
• The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order
  

Thanks,

Adam

On 03/10/2024 11:02 AM EDT Adam Rong <rongxh@...> wrote:


Let’s do some math here by example:
One daughter board plus shipping 9.9 USD
One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)
One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping once)


Thanks,
Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

Guys,
Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

* The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order

* The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order


Thanks,
Adam

On 03/10/2024 11:27 AM EDT N2MS <mstangelo@...> wrote:


Adam,

I would like want one daughter board and one 5351 module. The price is 19.80 USD . How much is shipping to New jersey USA 07737?

73 Mike N2MS

On 03/10/2024 11:02 AM EDT Adam Rong <rongxh@...> wrote:


Let’s do some math here by example:
One daughter board plus shipping 9.9 USD
One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)
One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping once)


Thanks,
Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

Guys,
Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

* The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order

* The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order


Thanks,
Adam

在 2024年3月10日，23:30，N2MS <mstangelo@...> 写道：

?CORRECTION -

I would like
- 1 reworked 5351 module
- 2 daughter boards.

What is the total with shipping to New Jersey USA 07737?

73 Mike N2MS

On 03/10/2024 11:27 AM EDT N2MS <mstangelo@...> wrote:


Adam,

I would like want one daughter board and one 5351 module. The price is 19.80 USD . How much is shipping to New jersey USA 07737?

73 Mike N2MS

On 03/10/2024 11:02 AM EDT Adam Rong <rongxh@...> wrote:

Let’s do some math here by example:
One daughter board plus shipping 9.9 USD
One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)
One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping once)


Thanks,
Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

Guys,
Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

* The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order

* The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order


Thanks,
Adam

在 2024年3月11日，03:25，Doug Lung <dlung0@...> 写道：

?

I just ordered two of the complete modules.?

When I saw your first posting showing the mod I ordered some TCXO's from Aliexpress planning to do the modification myself. When they arrived I had to use a magnifying glass to see them!?

It will be much easier just to replace the whole?Si5351A module than working with the micro-sized TCXO or taking the risk of damaging the existing Si5351A module when removing the crystal.?

Many thanks for offering this!?

73, Doug AH6DL

Doug,

It makes perfect sense. However, you guys put work on my side, hi hi. The green daughter boards are readily available but I will find time to rework the 5351 modules, so you will need to wait for a few days.

Thanks,

Adam

在 2024年3月11日，03:25，Doug Lung <dlung0@...> 写道：

?

I just ordered two of the complete modules.?

When I saw your first posting showing the mod I ordered some TCXO's from Aliexpress planning to do the modification myself. When they arrived I had to use a magnifying glass to see them!?

It will be much easier just to replace the whole?Si5351A module than working with the micro-sized TCXO or taking the risk of damaging the existing Si5351A module when removing the crystal.?

Many thanks for offering this!?

73, Doug AH6DL

Let’s do some math here by example:

One daughter board plus shipping 9.9 USD?

One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)

One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping ?once)

Thanks,

Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

?

Guys,

Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

• The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order
  
• The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order
  

Thanks,

Adam

在 2024年3月11日，06:21，Bill Maxwell via groups.io <wrmaxwell@...> 写道：

?

Hi Adam

Just ordered 2 modules and 1 daughter board, $24.70USD total but the new Paypal system didn't offer a message to seller option, so I hope you will be able to link the payment to this post?

73

Bill VK7MX

On 11/03/2024 2:02 am, Adam Rong wrote:

Let’s do some math here by example:

One daughter board plus shipping 9.9 USD?

One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)

One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping ?once)

Thanks,

Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

?

Guys,

Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

• The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order
  
• The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order
  

Thanks,

Adam

在 2024年3月11日，06:26，Adam Rong via groups.io <rongxh@...> 写道：

?Thanks Bill. I can match your order.

Thanks,

Adam

在 2024年3月11日，06:21，Bill Maxwell via groups.io <wrmaxwell@...> 写道：

?

Hi Adam

Just ordered 2 modules and 1 daughter board, $24.70USD total but the new Paypal system didn't offer a message to seller option, so I hope you will be able to link the payment to this post?

73

Bill VK7MX

On 11/03/2024 2:02 am, Adam Rong wrote:

Let’s do some math here by example:

One daughter board plus shipping 9.9 USD?

One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)

One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping ?once)

Thanks,

Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

?

Guys,

Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

• The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order
  
• The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order
  

Thanks,

Adam

On 03/10/2024 5:15 PM EDT Adam Rong <rongxh@...> wrote:


The shipping is still 5 bucks, Mike.

Thanks,
Adam

在 2024年3月10日，23:30，N2MS <mstangelo@...> 写道：

?CORRECTION -

I would like
- 1 reworked 5351 module
- 2 daughter boards.

What is the total with shipping to New Jersey USA 07737?

73 Mike N2MS

On 03/10/2024 11:27 AM EDT N2MS <mstangelo@...> wrote:


Adam,

I would like want one daughter board and one 5351 module. The price is 19.80 USD . How much is shipping to New jersey USA 07737?

73 Mike N2MS

On 03/10/2024 11:02 AM EDT Adam Rong <rongxh@...> wrote:

Let’s do some math here by example:
One daughter board plus shipping 9.9 USD
One reworked 5351 module plus shipping 14.9 USD (you don’t have to pay additional 4.9 USD for daughter board again)
One daughter board, one reworked 5351 module plus shipping 19.8 USD (you pay shipping once)


Thanks,
Adam

在 2024年3月10日，16:04，Adam Rong via groups.io <rongxh@...> 写道：

Guys,
Why you will need this TCXO Module? No more noticeable drift, even WSPR at full RF output! The TCXO is supplied by KDS of Japan. The spec says 0.5ppm.

I am offering two options. Please add 5 USD for shipping each order. PayPal to rongxh@... and leave your ship-to address. I have 30 pcs in stock at this moment.

* The green daughter board on the left, only available to this group, 4.9 USD each, 5 pcs max each order

* The reworked module on the right, will be made available to public, 9.9 USD each, 5 pcs max each order


Thanks,
Adam

Adam,

This tcxo mod is interesting! I ordered one reworked module to play with. Sent 15$ for module plus shipping via paypal to you.
--
73

Barb WB2CBA

在 2024年3月11日，21:33，wb2cba@... 写道：

?On Mon, Mar 11, 2024 at 05:13 AM, Adam Rong wrote:

Thanks, Barb! The calibration parameter should be very close to 0 instead of 10000.

Thanks,

Adam

On 2024/3/11 19:50, wb2cba@... wrote:

Adam,

This tcxo mod is interesting! I ordered one reworked module to play with. Sent 15$ for module plus shipping via paypal to you.
--
73

Barb WB2CBA

Adam,

That’s exactly what I am curious of,If I can eliminate calibration altogether from code.
?
--
73

Barb WB2CBA