At 07:11 PM 03/14/07, Bob, WA9FBO wrote:
You make my point. You say "Our system" You are a controller guy.
Your controller is your perspective. But that is actually a device
perspective.
Sure, I'm a controller guy, and since S-COM is going headlong into
the multiport controller biz, I have a vested interest in this topic.
For instance, how does a customer tie a bunch of radios, some
running flat and some running pre-emphasized, into one big
controller? It only works for receivers and transmitters that have
similar audio schemes. It won't work if, say, RX1 (flat output) is
supposed to mix with RX2 (discriminator output) and the resulting
audio feed both TX1 (flat input) and TX3 (modulator input).
The solution seems to be to run flat audio within the controller,
but that may not square with everyone.
I'd like to see a controller that has enough in it that all you need
to interface
to is discriminator audio and modulator audio. On the receive side it could
have a Micor-type squelch and a de-emphasis network built with 1% parts.
On the transmit side it has pre-emphasis and feeds the modulator directly.
You wouldn't need to implement a PL decoder or encoder as that's
already in the radio.
Mike WA6ILQ
