Mode is totally separate, their is an antenna relay in the transmitter. 
sharing a vfo, and antenna is far different from being a true tranceiver. 
The thing about the drakes is that every turn of a frequency dial, is 
exactly 25 KHZ.  You can plug in a crystal and operate on anything from 1.8 
to 30 mhz.  The only exclusion is 5 to 5.5 mhz.
Does the r4c have the CW filters?
----- Original Message ----- 
From: "Michael Ryan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, December 09, 2011 8:35 AM
Subject: Re-Drake twins


> Hi Curt and all:
>
> When changing modes on twins, did you change on both the transmitter and 
> the receiver or did it depend on if either if the transmitter had control 
> or if the receiver had control? Would I have to use two separate antennas?
>
> 73:
> Michael
>
> Sent from my iPhone