Hmmm, I just realized that the UDP audio device trick that I described below
is probably not working. I'll have to get back to you about that if you think
it's a way forward for you.
73's de SM0SVX / Tobias
On Wednesday 07 May 2014 07:43:44 SM0SVX wrote:
> On Tuesday 06 May 2014 17:03:29 Gustavo Conrad wrote:
> > Hi,
> > I'm testing a setup that includes one RepeaterLogic (with 2 remotetrx
> > nodes) and a SimplexLogic to interface to external equipment. I need to
> > pass the DTMF tones generated on the RF side to the SimplexLogic
> > connected equipment. I've noticed that the ModuleDtmfRepeater only
> > regenetares the digits in the incoming logic, the linked logic does not
> > transmit them.
> > Is there a way to make all the linked logics transmit the "repeated"
> > digits?
> No, the only interaction between logics is the audio. I have thought of
> implementing some means of communication between logics but so far have not
> come up with a good solution.
> Maybe if you provide some more details about your setup maybe I can come up
> with another solution. Do you need to connect/disconnect the simplex logic
> or is it always connected? Is the connected equipment full duplex or is
> there a simplex transceiver connected? Do you use both RX and TX audio?
> If it's full duplex it should be simple: just add another RX/TX pair to the
> repeater which interface to the equipment.
> If it's simplex things become a little bit harder since you probably now
> only want to transmit when there is incoming traffic on the repeater. This
> is an outline of a rather contrived solution that may work:
> * Set up an extra transmitter which is a LocalTx
> * Set up the LocalTx with a UDP "audio device".
> * If you need to receive audio as well, set up a LocalRx with a similar
> * Set up the repeater to tranmit CTCSS for the audio you want to pass
> through. This is done using the TX_CTCSS configuration variable in the
> repeater logic configuration.
> * Set up a RemoteTrx with an RF uplink
> * Set up a receiver (RX=) with an UDP audio device which listen on the same
> UDP port as specified for the LocalTx above.
> * Use CTCSS squelch on that receiver
> * Enable DTMF_MUTING
> * Set up an uplink transmitter (UPLINK_TX=) with a normal LocalTx that you
> connect to your equipment.
> * If you also need receiver audio, set up an UPLINK_RX and a TX in a similar
> way. If not, just set them to NONE.
> I have never tested a setup like that but it could work. I think DTMF digits
> received by the RemoteTrx will be retransmitted by the uplink TX. If not,
> disable DTMF muting and let the DTMF audio pass through the RemoteTrx.
> > Another question, is there a (undocumented) config variable to
> > set the generated DTMF digits amplitude?
> There is no such undocumented setting but there is a documented one ;-)
> Have a look at DTMF_TONE_AMP. This is what you can configure for the DTMF
> generation (from the manual page):
> The length, in milliseconds, of DTMF digits transmitted on this
> transmitter. 100ms is the default.
> The spacing, in milliseconds, between DTMF digits transmitted on this
> transmitter. 50ms is the default.
> The amplitude, in dB, of DTMF digits transmitted on this transmitter.
> Zero dB is the maximum amplitude. -18dB is the default.
> The settings are in the LocalTx section since that's where the tones are
> generated. I guess this is not very obvious at first sight so it should
> probably be pointed out in the manual page for the DTMF repeater module.
> 73's de SM0SVX / Tobias
> > Thanks in advance!
> > Gustavo - LU8WFY
> > Patagonia
> > Argentina