[Hamlib-developer] Re: NRD-545 commands, cvs

[Stephane F. <f4...@fr...>]

Hey Bob!

> I have not used CVS before.

Okay, CVS is a powerful tool, a little bit cumbersome at the first glance,
but proves to be very helpful in the long run.
Anyway, I'll roll you a tar ball so it's easier for you to test.

> I'm hoping you can remove the red mark next
> to the JRC entry on your web page:
> 
>  http://hamlib.sourceforge.net/support.html

Sure, I'll ask Nate (N0NB) to do so.

> It's very good of JRC to document the protocol
> in the user manual.  

Well, I've been enable to find the protocol specs on the web.
On the other side, the user manual is not quite good.

> The protocol for
> other company equipment (e.g., Yaesu VR-500)
> is kept "secret," therefore owners are stuck using
> only vendor-approved software, which is
> mediocre quality and never runs on Linux :-(
> [C'est une domage (?)]

Yep, "c'est domage" (hey, do you mean I can continue this mail in
french? :)
It's too bad some protocol are kept closed. Maybe under "fair use",
it should be possible to reverse engineer the protocol. 
There's nothing easier to do with a serial link!

I have couple of questions about the JRC backend and esp. the NRD-545:

* What is the Attenuator level in dB?
* In the manual, there's a WFM mode. What is the selectivity at -6dB of
  WFM. Is it broadcast WFM (230kHz) ?
* How many number of VFO are there ? just one ?
* What are ECSS mode ? Is synchronous LSB/USB/AMS?
  Should it be considered as a different mode like AM/AMS or just a
  function?
* What is the S-meter conversion table: "M" 000-255 -> dB  (with S9 = 0dB)
* What is BWC?  some kind of Band Width Control?
* Is it possible to get mode and IF bandwidth "D"CR and "B"CR ?
	and "T" power supply mode?
* What is the "O" Turn timer relay ON/OFF?
* What is the "Y" command used for?


Okay, enough for today. Tomorrow, if time permits, I'll code the most
important function: the "AA" command to set dimmer. hi.


Cheers,
Stephane