[App_rpt-users] Help on using CTCSS with usbradio.conf
Neil H. Gray
neil at ohiogray.org
Sun Oct 22 21:41:44 EDT 2017
To Whom It May Concern,
I am trying to get a DMK URIx working with a BridgeCOM repeater using
the usbradio.conf to provide CTCSS decode/encode and am having no success.
I can confirm that a received FM signals get repeated, and the allstar
configuration also appears to be working. However any configuration
related to CTCSS does not work at all.
I can confirm that the CTCSS tone is present with the input audio being
fed to the URIx, but none of the relevant settings in usbradio.conf(e.g.
rxctcssfreqs, ctcssfrom = dsp) seem to have any effect.
Adjusting the carrierfrom parameter in usbradio.conf has the expected
results. The COR signal comes to the URIx from the repeater and
functions correctly with carrierfrom set to usbinvert. At least with
this I can confirm that apt_rpt is using usbradio.conf rather than
While I have tested the hardware, I have not tried looking at the
software beyond glancing through the source code to get a rough idea of
the layout of apt_rpt.
Could anyone offer a working configuration example on CTCSS, or perhaps
give debugging hints?
I can handle a debugger but am not sure of a good way to debug a program
that operates on signals in real time.
Thanks in advance,
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