Astro Spectra COR/COS output....

[Josh]

I've done some searching here on the batboard to locate where I can tap a COR output on the Astro Spectra.

The configuration I think I'm looking for is "active low" or more realistically, voltage drop to 0 when carrier is present.

So far, I've tried the Pin 12, which I think was setup as 'vrs tx', PIN 10, which did nothing, and even tried the 10k resistor to NPN transistor circuit, but that did nothing at all.

I don't know why I can't get the desired operation I need, but perhaps someone can point me in the right direction on how I can get it on the accessory jack, or jury-rig the speaker pins properly for the 'RUS' stuff...

-Josh

[spareparts]

I don't know why I can't get the desired operation I need, but perhaps someone can point me in the right direction on how I can get it on the accessory jack, or jury-rig the speaker pins properly for the 'RUS' stuff...

I used a "stick-on" module to operate a relay & strobe on an Astro Spectra using the speaker connection. There was too much audio clutter in the area & had an urgent need to alert the staff that there was traffic on this particular radio.

http://www.rdlnet.com/product.php?page=130 is what I used with a transformer & DC blocking capacitor

Martin

[Josh]

It'd be easier to be able to make the active high, and active low... I've seen the circuit to do the opposite, and have built that successfully, Now, I have to figure out how to do the opposite.

-Josh

------Edit----

Oh yeah, just use an PNP transistor...


anyhow, it's done!

-Josh