CADI Operation Notes in 2005:
- 8 Mar: receiver lost signal due to connector failure at antenna.
- 9 Mar: connected CADI receiver to HIDIVE antenna while connector was
being repaired. Initially had problems with high noise levels. HIDIVE
antenna has poor response below 3 MHz so E traces are not seen.
- 26 Mar: reconnected CADI to its antenna after repairs, restoring
- 6 May: receiver signal dropped during thunderstorm; damaged balun was
removed on 8 May and receiver connected to HIDIVE antenna. Significant
interference was noted.
- 15 May: replaced balun. Interference was due to loss of time
synchronization by other BLO equipment; adjusted CADI schedule to
avoid interference, but high noise level was noted on CADI antenna.
- 22 May: noise was determined to come from CADI power amplifier.
After correcting this problem, system seemed to resume normal operation
though time schedule is still being shifted to avoid interference from
other BLO equipment.
CADI Operation Changes in 2002:
- 8 January: experimental 5.5 MHz Doppler sounding mode added to schedule.
- 23 February: separate day/night sounder operating modes implemented.
- 26 March: CADI operation stopped due to chewed-up
coaxial cable. Receive operation restored near end of UT day.
- 28 March: receiver scan range increased to 1.04-19.99 MHz to include
full CADI range.
- 29 March: "high-resolution" receiver scan of 1-3 MHz added.
- 4 April: feedline repaired, sounding operations resumed.
- 14 April onward: low signal appears to be due to summer absorption
and higher atmospheric noise levels.
- 25 April: system restarted to clear excess noise visible since
- 13 May: Changed daytime sounding mode to 2-10 MHz, 16 sample integration
to improve SNR.
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