Glenn,
   What I would do is place the bottom board with the relay coils on it and
lock the parts in location.
   Then use one of the mechanical layer to place circles around the
locations for the contacts on the top board the same size as the pads.
Copy the mech layer and mirror if needed.  You may also want to have the 4
pin header located also.

   Then mirror if needed and place all the top parts.   You will have all
the locations for the contacts and be able to place the rest of the RF parts
accordingly.   It will then nest together beautifully.   Enjoy!

Carl Schattke
[EMAIL PROTECTED]

----- Original Message -----
From: Glennster <[EMAIL PROTECTED]>
To: Multiple recipients of list proteledausers
<[EMAIL PROTECTED]>
Sent: Monday, February 05, 2001 7:46 PM
Subject: [PROTEL EDA USERS]: Help with a daughter board


> Hello everyone,
>
> I am working on an RF design which has 2 boards, essentially a "sandwich".
>
> The bottom board has the digital stuff and 18 relays.  The relays have
> physical connections on the top and bottom of the case (Coil on the bottom
> and contacts on the top). The top board has all the nasty RF.
>
> There is also a 4 pin header connecting the 2 boards together.
>
> I have footprinted the relays in 2 parts, coil and contacts.
>
> What is the best way to ensure that the 2 boards mate exactly.  When
> assembled, the top board goes down on top of the relays with the contacts
> sticking through the PCB and is soldered on the top along with the header.
>
> Any input is greatly appreciated!
>
> Thanks,
> Glenn
> KE3MF
> www.ldgelectronics.com
>
>
>
>
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