Re: TNC PI 9k6 RX problem at 9600


César Regalado León <ea8cxn@...>
 

Hello !

I'm continnue testing my TNC-PI 9k6!

Today I made and experiment. I reset the TNC and then I get the following values:

pi@raspberrypi:~ $ sudo ./pitnc_setparams /dev/serial0 0 15 2
pitnc_setparams Version 0.0.0.5
pi@raspberrypi:~ $ sudo ./pitnc_getparams /dev/serial0 0
pitnc_getparams Version 0.0.0.5

Using Serial port /dev/serial0
retrying...

   TNC Software Version           8
01 TXDelay - Zero means use ADC  40
02 Persistance                   63
03 Slottime (in 10 mS)           20
04 TXTail                        30
05 Full Duplex - Not used         0
06 Our Channel (Hex)             ff
07 I2C Address (0 = async) Hex   ff
08 Mode Speed                  9600
09 RX Level (Config)              0
10 TX Level                      96
11 RX Level (Actual)              0
13 Centre Freq                 2550
8 8 28 3f 14 1e 0 ff ff 60 0 60 0 ff e2 c0 sum 0

Pay attention to the Item 11, wich is 0 because I just resset it!.

After that, I turn on Xastir and start listening. I transmit a beacon and the beacon is received perfectly in my FT1D HT, and then I transmit a beacon from the FT1D HT and check if there is any change. I get the following results:

pi@raspberrypi:~ $ sudo ./pitnc_getparams /dev/serial0 0
pitnc_getparams Version 0.0.0.5

Using Serial port /dev/serial0
retrying...

   TNC Software Version           8
01 TXDelay - Zero means use ADC  40
02 Persistance                   63
03 Slottime (in 10 mS)           20
04 TXTail                        30
05 Full Duplex - Not used         0
06 Our Channel (Hex)             ff
07 I2C Address (0 = async) Hex   ff
08 Mode Speed                  9600
09 RX Level (Config)              0
10 TX Level                      96
11 RX Level (Actual)             98
13 Centre Freq                 2550
8 8 28 3f 14 1e 0 ff ff 60 0 60 62 ff 80 c0 sum 0

So its mean that the TNC is received something and automatically adjusted the RX Level. 

Anybody knowns  any command or software under linux to continous listening the TNC? Like a sniffer?

 

Thank you !

 

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