Tom,
Probably the simplest circuit would be to find an old Amperite time
delay N.O. relay and put it in series with the PTT line. Also, any
industrial electrician could find you a plug-in time-delay relay. Check
Grainger or Mouser for time delay relays.
The simplest would be to find one with 120VAC coil and just hook it to
the mains. Then put the normally open contacts in series with the PTT line
somewhere.
Al, K9SI
> --- In [email protected], "Thomas Oliver"
> <[EMAIL PROTECTED]> wrote:
>
>> I am using a .375K Micor PURC and when power is interrupted and
> comes back on the exciter drives cold tubes. Motorola didn't think
> that was too much of a problem I guess.
>>
>> thanks
>>
>> tom
>>
