Hi Aaron and others..

Whilst playing with svxlink and openrepeater I found some really essential things that *must* be added to the “General Repeater Settings” menu.

Case 1

The following 2 paramaters must be definitly be configurable via the web gui.
These are:
DEEMPHASIS=
1 if connected RX audio to a discriminator output, like 9k6 output
0 if connected RX audio to a line of LS ouput

PREEMPHASIS
1 if connected RX audio to a discriminator input, like 9k6 input
0 if connected RX audio to a mic or line input

If these 2 are not set correctly CTCSS and DTMF decoding wont work well!

Default now is DEEMPHASIS=1, and should be to 0 in my opinion.

Case 2

The CTCCS settings has to be revised..
That is for example, if we want to open the receiver with a CTCSS tone of 88.5hz

Now the Gui only adds the following to the svxlink.conf file

REPORT_CTCSS=88.5
This parameter is for status announcement only “*”
The repeater tells you what tone is used.
It does not affect the way the repeater should behave on RX.

CTCSS RX only works if the following parameters are set in the following way in svxlink.conf:

Add the following line (tone:time), Tone = the tone selected in the GUI, and the time is the minimal time it needs to detect before processing) 100 = 1 sec.
So in this case the Repeater listens for a 88.5hz tone, if so it holds for 1 second, if tone is received longer than 1 sec, the repeater goes in TX.

OPEN_ON_CTCSS=88.5:100

Also importand is to disable the manual SQL input..
We now use CTCSS as a kind of Squelch input, therefore we need to disable the manual Squelch input.
Just Comment the following line. (setting it to 0 is not enough)

#OPEN_ON_SQL=1

Hope my findings are helpfull 🙂

• This topic was modified 8 years, 9 months ago by Björn, PD5DJ.