Baycom ser12, DCD, duplex(?) problem

Baycom ser12, DCD, duplex(?) problem

[SM3SGP]

Hej,

I am trying to get my Baycom serial 1200bd modem to work properly on my 
2.4-18 machine. (Redhat 7.2 (I think) 500Mhz)

I have configured an tested both the baycom_ser_hdx and fdx drivers, but same 
result.

The modem does not care if the channel is busy and transmit over other 
stations. Except from that, all seams to be OK. I have tesed with a lot of 
differnet setting, but so far the PTT goes on and the modem starts to 
transmit without waiting for a clear channel.

How I start the modem:

setserial /dev/ttyS0 uart none
modeprobe baycom_ser_fdx
sethdlc -p -i bcsf0 mode "ser12*" io 0x3f8 irq 4
sethdlc -i bcsf0 -a txd 300 txt 50 slot 100 ppersist 40 half

ifconfig bcsf0 hw ax25 sm3sgp up

Are there any more tests I can do? Anyone out there still running Baycom 
serial 1200bd modems and Linux?

73 de Gus, SM3SGP

sk3w.shacknet.nu 8000 Spider

Someone in Paris, France ?

[ravioli]

Maybe someone doing Ham on Linux in Paris, France ?

Re: Baycom ser12, DCD, duplex(?) problem (soundmodem too)

[ariel mastracchio]

Hi!

   I have the same problem but with soundmodem. I have
put the led in the DCD parallel port, during a
transmision in the channel the led blink, dont keep on
during all the transmition, then the ptt go on and
transmit over the othe ham.... the packet and decoded
good.

This is a sound blaster+slakware 7.2+pentiun 100Mhz.

thanks to all...

-ari


--- SM3SGP <sm3sgp@kkn.net> wrote:
> Hej,
> 
> I am trying to get my Baycom serial 1200bd modem to
> work properly on my 
> 2.4-18 machine. (Redhat 7.2 (I think) 500Mhz)
> 
> I have configured an tested both the baycom_ser_hdx
> and fdx drivers, but same 
> result.
> 
> The modem does not care if the channel is busy and
> transmit over other 
> stations. Except from that, all seams to be OK. I
> have tesed with a lot of 
> differnet setting, but so far the PTT goes on and
> the modem starts to 
> transmit without waiting for a clear channel.
> 
> How I start the modem:
> 
> setserial /dev/ttyS0 uart none
> modeprobe baycom_ser_fdx
> sethdlc -p -i bcsf0 mode "ser12*" io 0x3f8 irq 4
> sethdlc -i bcsf0 -a txd 300 txt 50 slot 100 ppersist
> 40 half
> 
> ifconfig bcsf0 hw ax25 sm3sgp up
> 
> Are there any more tests I can do? Anyone out there
> still running Baycom 
> serial 1200bd modems and Linux?
> 
> 73 de Gus, SM3SGP
> 
> sk3w.shacknet.nu 8000 Spider
> 
> 
> -
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=====
amastr@mail.palermo.edu.ar
lu9aum@amsat.org
lu9aum@lu9aum.ampr.org

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