Newbie: the easiest way to connect two PCs via HF radio

Newbie: the easiest way to connect two PCs via HF radio

[liva]

I have to connect two PCs in this way:
PC - HF modem - HF radio - cable with load - HF radio - HF modem - PC

The PCs work with Ubuntu 4.10, the HF modems are Halcomm DSP4100, the radios ICOM IC-707. Which is the easiest-to-use opensource free software to make the link works? I want only to be able to exchange files, I tried with minicom, SSH, and something else, but nothing works... Thank you for your help,
Marco Liva

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Re: Newbie: the easiest way to connect two PCs via HF radio

[chuck gelm]

liva@katamail.com wrote:
> I have to connect two PCs in this way:
> PC - HF modem - HF radio - cable with load - HF radio - HF modem - PC
> 
> The PCs work with Ubuntu 4.10, the HF modems are Halcomm DSP4100, the radios ICOM IC-707. Which is the easiest-to-use opensource free software to make the link works? I want only to be able to exchange files, I tried with minicom, SSH, and something else, but nothing works... Thank you for your help,
> Marco Liva
> 
> ________________________________________________________________________
> Cerchi un laboratorio fotografico aperto 24 ore su 24?
> Stampa le tue foto digitali su Kataweb e le ricevi a domicilio in 48 ore.
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Dear Marco Liva:

IMHO, 'ftp[d]',
  if you configure networking in the two PCs and
  the 'HF Modems' can be configured as network devices
else
  'xastir'
  but this may not be 'easy'. ;-)

Does your scheme work if you bypass the radio portion?

PC - HF modem - <> - HF modem - PC

HTH, Chuck

Re: Newbie: the easiest way to connect two PCs via HF radio

[Curt, WE7U]

On Mon, 8 Aug 2005, chuck gelm wrote:

> Dear Marco Liva:
>
> IMHO, 'ftp[d]',
>   if you configure networking in the two PCs and
>   the 'HF Modems' can be configured as network devices
> else
>   'xastir'
>   but this may not be 'easy'. ;-)

I don't understand the reference to Xastir, that's likely to confuse
the issue.  Xastir would be of interest only if Marco was intending
to do APRS.  For file transfers it doesn't apply.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"

Re: Newbie: the easiest way to connect two PCs via HF radio

[chuck gelm]

Hi, Curt:

  Thanks. My bad. I was thinking of suggesting a packet BBS application.
I guess I could have mentioned 'f6fbb'.  Although I've not seen it
mentioned in a year or more.  :-|

Sorry, Chuck

Curt, WE7U wrote:
> On Mon, 8 Aug 2005, chuck gelm wrote:
> 
> 
>>Dear Marco Liva:
>>
>>IMHO, 'ftp[d]',
>>  if you configure networking in the two PCs and
>>  the 'HF Modems' can be configured as network devices
>>else
>>  'xastir'
>>  but this may not be 'easy'. ;-)
> 
> 
> I don't understand the reference to Xastir, that's likely to confuse
> the issue.  Xastir would be of interest only if Marco was intending
> to do APRS.  For file transfers it doesn't apply.
> 
> --
> Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer

Re: Newbie: the easiest way to connect two PCs via HF radio

[liva]

> Does your scheme work if you bypass the radio portion?
> 
> PC - HF modem - <> - HF modem - PC
> 
No, it doesn't, it's exactly the same. Using minicom, I'm only able to exchange files with ascii, but not with zmodem, xmodem, ymodem or kermit. I tried with ssh over slip, but it's too slow (the ping works in 10-17 seconds).

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Re: Newbie: the easiest way to connect two PCs via HF radio

[Marco Liva]

James Washer ha scritto:

>Tell us a bit about the modems (and the radios). What frequency, what mode, T/R delays, etc... as much as you can.
>
> - jim
>
>On Tue, 09 Aug 2005 08:49:20 +0000
>"liva@katamail.com" <liva@katamail.com> wrote:
>
>  
>
>>>Does your scheme work if you bypass the radio portion?
>>>
>>>PC - HF modem - <> - HF modem - PC
>>>
>>>      
>>>
>

I usually use just the link PC - HF modem - HF modem - PC, for easiness (in any case, the frequency of the radios is 15.000.0). The modems work in clover mode.

Re: Newbie: the easiest way to connect two PCs via HF radio

[chuck gelm]

liva@katamail.com wrote:
 >>Does your scheme work if you bypass the radio portion?
 >>
 >>PC - HF modem - <> - HF modem - PC
 >>
 >
 > No, it doesn't, it's exactly the same. Using minicom, I'm only able to exchange files with 
ascii, but not with zmodem, xmodem, ymodem or kermit. I tried with ssh over slip, but it's too slow 
(the ping works in 10-17 seconds).

Is each PC/minicom/modem 8 bits?
Is each PC/modem matching in flow control
  (it should be hardware flow control for binary transfers) ?
Is 'clover' an 8 bit character set?

HTH, Chuck

Re: Newbie: the easiest way to connect two PCs via HF radio

[liva]

> Is each PC/minicom/modem 8 bits?
> Is each PC/modem matching in flow control
>   (it should be hardware flow control for binary transfers) ?
> Is 'clover' an 8 bit character set?
> 
> HTH, Chuck
> 
The serial port setup in minicom in both the PCs is:
│ A -    Serial Device      : /dev/ttyS0  
│ B - Lockfile Location     : /var/lock                                
│ C -   Callin Program      :                                           
│ D -  Callout Program      :
│ E -    Bps/Par/Bits       : 9600 8N1                                 
│ F - Hardware Flow Control : No      
│ G - Software Flow Control : No  		

I tried with "Hardware Flow Control: Yes", too, and changing setting E and G.
CLOVER transmissions are "transparent", sending all 8 data bits.
Thanks again for your help,
Marco

________________________________________________________________________
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Re: Newbie: the easiest way to connect two PCs via HF radio

[chuck gelm]

liva@katamail.com wrote:
>>Is each PC/minicom/modem 8 bits?
>>Is each PC/modem matching in flow control
>>  (it should be hardware flow control for binary transfers) ?
>>Is 'clover' an 8 bit character set?
>>
>>HTH, Chuck
>>
> 
> The serial port setup in minicom in both the PCs is:
> │ A -    Serial Device      : /dev/ttyS0  
> │ B - Lockfile Location     : /var/lock                                
> │ C -   Callin Program      :                                           
> │ D -  Callout Program      :
> │ E -    Bps/Par/Bits       : 9600 8N1                                 
> │ F - Hardware Flow Control : No      
> │ G - Software Flow Control : No  		
> 
> I tried with "Hardware Flow Control: Yes", too, and changing setting E and G.
> CLOVER transmissions are "transparent", sending all 8 data bits.
> Thanks again for your help,
> Marco

Dear Marco:

  IMHO, you must have hardware flow control for binary file transfers.
Although, if you can transfer ASCII files without overflow errors,
  binary file transfers would not have overflow errors either :-|

Both the PC (minicom) and the clover modem parameters must match.
Both must be using hardware flow control.
You did not mention the parameters of the modem(s).
Do the clover modems use hardware flow control?

Does the clover modem(s) come with software capable of binary file transfers?

http://64.233.167.104/search?q=cache:Zp8M4oTOy3sJ:www.halcomm.com/docs/e2004.pdf+clover+file+transfer&hl=en

HTH, Chuck

Re: Newbie: the easiest way to connect two PCs via HF radio

[liva]

> Both the PC (minicom) and the clover modem parameters must match.
> Both must be using hardware flow control.
> You did not mention the parameters of the modem(s).
> Do the clover modems use hardware flow control?
> 
> Does the clover modem(s) come with software capable of binary file transfers?

From the manual of my modems I read:
"The character format is 8 bits, no parity, one stop bit at 9600 bps. Hardware flow control is always active on the serial port"

Minicom does not work with Hardware flow control activated, too, as I said, but probably you're right, it has to be activated, the problem is elsewhere.

The only software provided is for windows, it works, but I have to use free software for Linux (it's the aim of a project).
Marco

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