I have some spare PCB's

 

These PCB's are not for sale but you do have to reimburse the postage costs.

​Payment for those postage costs will be to a PayPal account.

I can post ordinary mail or registered mail - you choose and take the risk.

It may be cheaper to follow the links to EASYEDA and jlcpcb.com and get five boards with similar postage costs than pay postage for these ones.

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Typical postage costs are:

• Ireland ordinary mail = € 2.60

• Ireland registered = € 8.20

• UK ordinary mail = £ 5.00

• UK registered mail = £ 12.00

• EU ordinary mail = € 5.00

• EU registered mail = € 12.00

 

40M VCO

 

In the March 2022 edition of PW I showed the schematic for a 40m VCO (figure 9) and the built PCB (figure 10).  Actually it is a 28 - 30 MHz oscillator that s divided by 4 to get the I and Q that is needed to drive the QPD. 

 

 

 

 

 

 

 

 

 

 

You need to make a modification as the PCB was set up with a MAX913 in mind as a buffer and the final design used a 2N3904.  The modifications are shown in this document.

 

I have two of these PCB's to go to good homes.

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QPD PCB

 

In the January 2022 edition of PW I showed the schematic for the QPD (figure 2 and 3) and the built PCB (figure 4).  

 

 

 

 

 

 

 

 

 

 

 

 

There are no modifications required to this V2 PCB. While some of the component hole spacing’s are not perfect, everything can be easily made to fit, all components are orientated as per the silkscreen and all/most of the component designators are in the right positions.

 

I have two of these PCB's to go to good homes.

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MCU and DDS PCB

 

In the July 2022 edition of PW I indicated that I had made a PCB for the MCU and the DDS.  The schematic is in this document and the built PCB is shown in figure 3 of the article.

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You need to make two modifications by cutting two tracks as shown in this document. If you are concerned then I can cut those for you before posting.

 

I have two of these PCB's to go to good homes.

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I do intend to add some more bits and pieces and even some of the modules I built on my journey.  They may help peope with their playing around.  But I need time to get that done.

 

​​Updated - 2 July 2022