r8144 for reference
First of all WONDERFUL.
Makes all that writing I did superflous.
An important reminder (I think):
If you are going to do repeated runs using different frequencies (for
example, eliminating 20 MHz wwv for a night run, or eliminating 2.5 MHz wwv
for a day run), be sure to ZERO OUT your Slope and Intercept values and
delete your fmt.all before you begin a new run
I forgot to do the 1st part (ZERO OUT)...and wasted 2 hours of data
collection, because I was calibrating the calibration...very bad idea).
B4 someone asks, why in the world would you collect data for 2
hours...well, I was making a trip, the radio wasn't doing anything else, so
...
I am doing different runs at different times of the day with different
frequency references, to see how the results differ with the internal
solution provided.
I'm going to do the following:
Use only WWV from 5-20 MHz
Use only WWV from 2.5 to 15 MHz
Use Broadcast Band (BB) 0.640 thru 10 MHz night
Use BB, CHU, WWV at night thru 10 MHz night
Use BB and everything I can find thru 20 MHz day.
I have a baseline to compare to these new runs that has shown itself to be
VERY accurate on 6m MSK144 (Kenwood TS-590sg)
A:-0.78 Hz B: 0.4400 ppm StdDev: 0.257 err: A (0.03) B (0.0021)
These values on my TS-590sg agree with my SDR, and 3 different GPSDO
stations on MSK144...within 1 or 2 Hz at 50.260 (excluding doppler and any
measurement error.)
This is for my own entertainment. I doubt it has any real value for
software development. But, just in case it does... I'll try to put together
a table showing the variables and the results those variables produced. It
may help users decide what the most efficient method of data collection is.
73, N0AN
Hasan
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