[Elecraft] Proset K2 Replace IC with HC-4 ?

[Frank Lammel]

Hi all,

I am thinking about replacing the IC Mic in the Proset K2 with a HC-4. 
My questing: Can I do this without any aditional things? Just solder out 
the IC and solder in the HC-4? Or isn't it that simple? Of course with 
no bias then...

However if it is that simple, what do you guys think? Would you 
recommend this or is it better to leave the IC with the Proset K2 at the K3?

73!
Frank, DD7ZT