[arm-allstar] How to generate PL

[Stephen - K1LNX]

>
> - I could generate PL with the transmitter, but this would add PL to
> the hang time, courtesy tone, and IDer. Not what I want. (Are the any
> programming tricks I can do in the CDM to toggle PL generation?)


Pin 6, 8, 12, or 14 looks like it can be enabled for "TX PL Inhibit", you
could tie an GPIO pin from the Pi to this pin, but unsure of how you could
defeat PL per your requirements, maybe the event management system applies
here? Just brainstorming.  I have a similar setup using a pair of 750's,
but it's on an SCOM 7330 controller with a RIM "lite" on port 2 for my
AllStar access. I would mainly be interested in having ID sent with no PL
so may need to look into this myself.

Interested as well to see what others have done.

73
Stephen
K1LNX

On Mon, Jun 12, 2017 at 12:42 PM, "Tom Hayward via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> I would like to generate PL any time the audio path (receiver or link)
> is active, but not during hang time, courtesy tone, or IDer. I am
> using a Raspberry Pi 2 (I have a spare RPi 3 and various PCs if
> needed), the transmitter and receiver are CDM750s, and the audio
> interface is a RIM-Maxtrac-RM. This seems to be a frequently asked
> question, but I'm still not sure what the best practice is. Here is
> what I understand:
>
> - simpleusb cannot generate PL
> - usbradio can generate PL, but distorts the link audio
> - I could generate PL with the transmitter, but this would add PL to
> the hang time, courtesy tone, and IDer. Not what I want. (Are the any
> programming tricks I can do in the CDM to toggle PL generation?)
> - I could generate PL with an external encoder, but it's still not
> clear to me how to give it an enable/disable signal when the audio
> path is active.
>
> What is the best practice here? What have others done?
>
> Tom KD7LXL
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