Re: [Hamlib-developer] RX320 Modifications

[P.J. R. <pr...@ct...>]

Stephane

 On Wed 12/03/08 18:05 , Stephane Fillod f8...@fr... sent:
> Hi Josh,
> 
> Thank you for the patch, appreciate it.
> 
> Good for the calibration data. However, I don't understand why
> you removed the LEVEL_AGC/LEVEL_AF/LEVEL_CWPITCH/LEVEL_IF from 
> the get_level caps. I agree the radio has no protocol support
> to let them be retrieved, however the backend is able to
> "cache"(shadow) them. What was your rationale to remove them?

Prior to the change, no S-meter readings were
displayed in grig, and debug level 5 showed every query
to the receiver generating an error.  As soon as I made
the query for rawstr only, the S-meter started working
and no more errors were generated.

I have since refined the calibration data to:
#define RX320_STR_CAL { 17, { \
                {      0, -60 }, \
                {     10, -50 }, \
                {     20, -40 }, \
                {     30, -30 }, \
                {     40, -20 }, \
                {     50, -15 }, \
                {    100, -10 }, \
                {    200, -5 }, \
                {    225, -3 }, \
                {    256,  0 }, \
                {    512,  1 }, \
                {    768,  3}, \
                {   1024,  4 }, \
                {   1280,  5 }, \
                {   2560,  10 }, \
                {   5120,  20 }, \
                {  10000,  30 }, \
        } }

which provides better response at low S-levels.


> Since you've been doing tests, would you rate the RX320 backend
> as RIG_STATUS_STABLE?

Yes.

> 
> You're talking about the JRC NRD-525; have you been able to control it
> using Hamlib ? What backend ? What RS232 card ? I've found some
> protocoldocumentation at F4EZC'site.

Not yet.  My JRC NRD-525 works well in all respects except for
RS-232 at the moment -- I can't connect to the serial port at all.
Years ago (hard to believe the radio is 20 years old....) this wasn't
a problem, and I had written Amiga and OS/2 control software that
worked well.  I need to dig out my serial analyzer....

I have already cloned the nrd535.c file into a 525
version.   The 525 is similar, but doesn't support
reading signal strength.  

Will keep you posted,

> 
> Cheers
> -- 
> Stephane - F8CFE

P.J. "Josh" Rovero        Ham Radio:  KK1D
ABC:  9277                   1985 BMW R80RT
Web:     http://www.roveroresearch.org