[ Transmit Receive Organiser using a PIC ]
it's all in the timing ...
As reviewed in August 2012 Radcom
How to order : [click here]
Download manual first : [click here]
Stop giving your relays a hard time - switch 'em first! ..... Worried about blowing your receiver up? - isolate it first! ....Worried about valve damage if bias fails? - interlock it!
TROPIC circuit diagram
Five buffered sequenced output lines
Two buffered interlock inputs
Two modes: Alarm and fallback, or hold for interlock
Interlocks constantly scanned - useful for SWR fault, bias failure etc.
Dual PTT - PTT and enable (or use as third interlock input)
AC output for alarm sounder and separate steady level on fail.
4 selectable sequence rates: 25ms, 50ms, 100ms, 200ms