In article . com,
wrote:

On Nov 3, 5:49 pm, Telamon
wrote:
In article .com,

wrote:
If you need to prototype or build a lumped element RF filter, check
out the RF Filter PCBs at RF Bites.

http://www.rfbites.com

Those are not very good coax to PCB connectors. You can do better. Must
be pretty low frequency stuff ( 1 GHz ) if you are using FR4.

--
Telamon
Ventura, California

Connectors are rated to 12GHz.

FR-4 is good up to 3.5GHz, then it starts to fall apart.

I would not use FR4 over 1GHz.

--
Telamon
Ventura, California