[P25nx] Connect to astrotac

Bryan Fields Bryan at bryanfields.net
Sat Dec 19 07:18:01 UTC 2020


On 12/18/20 7:09 PM, LARRY DANNA wrote:
> Well I thought all was working ok till I started testing further. When I
> key up and change talk groups I hear digital hash but no voice return
> acknowledging the new talk group Ive tried to conduct a qso but the return
> audio is choppy and seems to lose sync . I hear a few words then silence
> then a few more words. sometimes I hear the voice prompts other times not.
> Wondering if the DIU config for the P25nx is correct .  It is connected to
> the astro tac as a diu as previously advised. the astrotac port is
> configured for external clock . is that correct?  Or is there  anything
> else I am missing??

Do you have the clocks on RX and TX tied together?  The cisco should generate
clock on rx to the atac, but the atac will not generate tx clock to the cisco.

Check it with a scope if you're in doubt.

73's
-- 
Bryan Fields

727-409-1194 - Voice
http://bryanfields.net


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