[chirp_users] Trying to use chirp via ser2net and socat

Nigel Johnson, MIEEE nw.johnson at ieee.org
Wed Nov 5 13:54:13 PST 2014


Thanks for that.  At least if I know to start at 9600 I can try other things without worrying that one problem is masking another.

73, Nigel ve3id

On 11/05/2014 04:50 PM, Tom Hayward wrote:
> On Wed, Nov 5, 2014 at 1:23 PM, Nigel Johnson, MIEEE
> <nw.johnson at ieee.org> wrote:
>> Hi, I wonder if anybody has tried this and can offer advice: I have chirp running on a laptop in my apt, but an FT8900 is in a boiler room one the roof.  The remote control head for the radio is down in the apartment.
>>
>> I can connect to the FT8900 by running a ser2net service up there and socat down here.  With this setup and permissions all set OK using /dev/pts/5, I can see the FT8900 send a character when I put it into clone mode.  But chirp will not recognise anything and gives me "Failed to communicate with radio: Failed to read header (0)"
>>
>> I am using SuSE linux here and CentOS upstairs.  I have tried setting the serial port up there to 1200, 4800, 9600 and 19200.  I assume that chirp uses autobauding to communicate with the radio but that is obviously not available over a tcp connection.
>>
>> Any help would be appreciated!
>>
>> 73 de Nigel ve3id
>
> The FT-8900 uses 9600 serial, but it can't actually receive data that
> fast. It's picky about timing. Chirp sends it 64 bytes of data, waits
> for an ACK, then waits another 50 ms for the radio to finish before
> sending the next block. Your network link may be messing up this
> timing.
>
> First step is to try again at 9600.
>
> Tom KD7LXL
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>

  

-- 
Nigel Johnson
MSc., MIEEE
VE3ID/G4AJQ/VA3MCU

Amateur Radio, the origin of the open-source concept!

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