[Elecraft] C9 on KIO3

[Adi Andrei]

Hi,

I knocked out C9, a big capacitor (compared to the other SMDs) while reistalling the subRX.
It got hooked by the coax from the Aux antenna.

My question is, what does C9 do, and what would happen without it ?

Also any suggestions ? I never did SMD soldering, and also this one seems tricky. It still hangs in its [upper] side connection, but it seems as the second connection is underneath it ?

Thank you.

Adi, 2E0TTX