User visible changes in the firmware version 3.4.6 since version 3.4.5.

                             Highlights.

1. TRE_G3TH rev.6: parameters /par/frq/in/amp and /par/frq/in/status
   were fixed to have correct values.

2. NTRIP client: output first NMEA GGA (when requested) after
   negotiation is already finished.

3. Bug in the saving of average ARP position in NVRAM has been fixed.

4. Bug in the computation of GLONASS satellite data (slot number,elevation,azimuth)
   in "unlimited" dynamic mode has been fixed.

5. Compass (Bedou-2) satellites tracking is turned on by default
   (if COMP option is activated).

6. [rc],[r1],[r2],[r3],[r5],[rl] messages: offset for COMPASS
   (Bedou-2) was changed to 0.105.

7. COMPASS (Bedou-2) raw nav data message is simplified: now for all
   satellites it's length is the same.

8. Two new spectrum parameters were implemented: /par/spectr/name and
   /par/spectr/frq0.

9. DUO_G2 from rev.4: parameter /par/dev/ser/d/cts was fixed to have correct value.

10. TCP server: connections were not correctly expired when there was
    enough activity on other connection(s): now fixed.

11. New parameter for raw inphases/quadratures smoothing has been implemented:
    /par/raw/iqsmi

12. Fixed a bug in [YA] [YB] messages: time offset value was 1e6 times less
    and imprecise.

13. Bug in computation of tropo delay for high altitudes has been fixed.

14. BINEX: F_FIXPER flag removed from default scheduling parameters of
    0x00-00 BINEX message to allow user to specify different period by
    'em' command.

15. Fixed problem with SVs tracking when receiver has 1 Hz update rate
    and /par/osc/mode parameter is set to either "locked" or "tied".

16. Bug in the computation of elevation, azimuth and real satellite number
    for different update rates of measurements and position has been fixed.

17. AGC/Spectrum calibration parameters have been added.

18. /par/rover/base/stid/got: fix junk value when there is no reference position.

19. ALPHA: support for revision 5.1 of the power board.


                      More Detailed Description
                (refer to GREIS for even more details)


                             1. Messages.

No changes.

                            2. Parameters.

2.1 New spectrum parameters

Names of Spectrum Bands.

Name:     /par/spectr/name
Access:   r
Type:     array[0...N] of enumerated
Values:   {[gps1,gps2,gps5,glo1,glo2,glo3],...}

Array of names of spectrum bands for each RF band.

Spectrum First Points.

Name:     /par/spectr/frq0
Access:   r
Type:     array[0...N] of float
Values:   {[-1600...1600],...}

Frequency of the first (left) point of spectrum data for each RF band.

If number is negative, frequency of the first (left) point of
corresponding spectrum is equal to its absolute (positive)
value, but frequency has descending order.

2.2 New raw Inphases/Quadratures smoothing parameter

Name:     /par/raw/iqsmi
Access:   rw
Type:     integer
Values:   [1 ... 200]
Default:  1

Specifies raw Inphases/Quadratures smoothing interval in
5 millisecond units.
Note: if (/par/raw/iqsmi)*5 greater than (/par/raw/curmsint),
then Inphases/Quadratures are smoothed over (/par/raw/curmsint)
time interval.

2.3 AGC/Spectrum calibration parameters.

These parameters are not used in firmware; software may
write/read them and use on it's purpose. They are sticky and are not
erased by clear NVRAM procedure.

AGC calibration parameters for internal antenna.

Array of numbers for each RF band.

Name:     /par/spectr/calib
Access:   rw
Type:     array of integers
Values:   [-1000000000 ... +1000000000] for each
Default:  0 for each


AGC calibration parameters for external antenna.
Array of numbers for each RF band.

Name:     /par/spectr/calibext
Access:   rw
Type:     array of integers
Values:   [-1000000000 ... +1000000000] for each
Default:  0 for each

                             3. Options.

No changes.

                             4. Commands.

No changes.

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