Hardware: Via inductance on beta3 may affect RF paths

softerhardware / Hermes-Lite2

A second generation low-cost amateur HF software defined radio transceiver.

http://www.hermeslite.com

231 stars 78 forks source link

Hardware: Via inductance on beta3 may affect RF paths #55

Closed softerhardware closed 6 years ago

softerhardware commented 7 years ago

Unmask and make vias near pins 2 and 6 of U9 larger. Consider the same for other vias in RF path.

softerhardware commented 6 years ago

The problem here was out of spec capacitors used in the TX filter. These have been changed to no substitutions in beta4. No changes will be made to these vias.