Austron 2100F

Start procedure:

• Connect a Loran-C 100 kHz loop or whip antenna to the rear ANTENNA input. Or if you're within hundreds of miles from the transmitter a few feet of unshielded wire might do the trick.
• Connect a frequency standard to the rear EXT REF input (the 2100F has no internal reference). The standard doesn't have to be atomic; anything accurate to 1E-9 or better will work.
• Fold open the front cover using the two thumbscrews and set the tiny on-off-on toggle switch near the left side of the lowest PCB for 1, 10, 5 MHz, respectively, to match your external standard frequency.
• Power up the unit with the rear on-off switch.
• The display will show E1002048 followed by E-20 followed by a clock display counting seconds from 00:00:00.
• If you press BACKLIGHT a blue-green LCD backlight should glow for a minute.
• On the West coast press 99400 and press GRI or in the Midwest press 89700 and press GRI. The usec LED should illuminate.
• Press 1 and press ACQ. The acquire LED should go on.
• In a few minutes the settle LED should go on.
• Press STATUS and press 3. The dB LED will go on and the LCD shows signal strength.
• In 10 to 30 minutes the tracking LED will turn green.
• STATUS 0 - front panel switches enable
• STATUS 1 - front panel lockout
• STATUS 2 - noise number (e.g., 42)
• STATUS 3 - receiver gain (e.g., 85 dB)
• STATUS 4 - time constant (e.g., 2)
• STATUS 5 - clock display
• STATUS 6 - receiver status bits (e.g., -----E)
• STATUS 7 - net phase delay (0.12 usec)
• STATUS 8 - elapsed time (e.g., 3601 seconds)
• STATUS 9 - not implemented
• If the LCD shows --HELP-- press CLEAR.
• The status bits, left to right, are: Acquisition in progress, Loss of reference, Low SNR, Station blinking, Tracking locked, Not yet in tracking mode.
• Type 0 STATUS 6 to reset the status register.
• Type HHMMSS STATUS 5 to set the clock.
• Press the FREQ OFFSET key to see the current measured frequency difference between the external reference and the Loran-C station. You'll see something like E12 -9.8 meaning the external reference frequency is low by 9.8E-12 relative to the Loran-C standard.
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