You are correct... there is one delay for both modes. As the designer,
my feeling is that a switchable AM to SSB delay is not necessary. My
experience has been that a reasonable delay can be chosen that is
acceptable to both modes. Actually, a slight delay in all modes has a
distinct advantage when the amplifier is mounted in a remote location
such as the trunk of the vehicle. It allows the operator to confirm
that the amplifer was pulled in on the last transmission by numbing the
receive (during the delay) for a very short time after the mic button
is released. Without this effect, the operator has no real way of
confirming the amplifier is operating to some level, since the relay
can't be heard.

www.telstar-electronics.com


DrDeath wrote:
How is it automatic? I see no circuit that senses the difference between AM
and SSB and adjusts the delay time to compensate. You are just splitting the
difference in the time needed for the COR circuit to operate. It's either
going to chatter on SSB or lag on AM or possibly both. Amps have a reason
for selective delay and quite frankly it's not much money or trouble to add
this necessity.