From observe@banshee.VLA.NRAO.EDU Thu Dec 7 17:55:25 1995 X-Sender: observe@banshee.vla.nrao.edu (Unverified) Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="============_-1393738384==_============" Date: Fri, 8 Dec 1995 00:55:40 +0000 To: vlbiobs@nrao.edu From: observe@banshee.VLA.NRAO.EDU (VLA Operators) Subject: Observe log for AP296 (Galileo) Content-Length: 4689 --============_-1393738384==_============ Content-Type: text/plain; charset="us-ascii" --============_-1393738384==_============ Content-Type: text/plain; name="AP296_95Dec07_987.Text"; charset="us-ascii" Content-Disposition: attachment; filename="AP296_95Dec07_987.Text" ************************************************************************ Program: AP296 Observer: B. Folkner Date: Thursday, Dec 7 1995 User Number: 1989 Source File: 767P296 Subarray: #1 Observe Mode: Phased Array Operator: K. Malolepszy & T. Perreault ** Weather Information ** Time Dew Point Temp. Wind Bar. Pressure Remarks: 95Dec07 19:11:26 -1.5C 12.3C NW 5.3 m/s 786mbars Sky Cover is 100%. Cumuloform type. 95Dec07 22:42:37 0.1C 8C WSW @ 3.0 m/s 785mbars Sky Cover is 100%. Cumuloform type. ** Visibility Tape Information ** Tape # File # Time of Final Record: N6806 1 ** Monitor Tape Information ** Tape # File # Time of Final Record: N6790 7 95Dec08 at 0:00:00 N6810 1 Antenna(s) Used: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 27 28 ** Operator Comments ** Start Time End Time Form # Ant # Downtime 95Dec07 19:06:44 (in Minutes) Starting program: AP296, observe file: 767P296. Start Time End Time Form # Ant # Downtime 95Dec07 19:10:40 On source 1751-253 with all available antennas. The band(s) used is(are) L X band(s). Start Time End Time Form # Ant # Downtime 95Dec07 19:06:44 The Area Frequency Coordinator at White Sands Missile Range (New Mexico, USA) reports airborne electronic jamming which may be occurring now. It is not clear to us how long this activity will last. Cannon, New Mexico (USA) Air Force Base is supposed to let VLA Operations know before activities start. Here are frequencies affected: 1225 - 1270 MHz 1340 - 1400 MHz 2200 - 2290 MHz 2300 - 2400 MHz 2690 - 2704 MHz 2714 - 2720 MHz 2730 - 2735 MHz 2758 - 2880 MHz 2855 - 2880 MHz 4800 - 4990 MHz 4990 - 5000 MHz 7895 - 8030 MHz 8030 - 8100 MHz 8400 - 8500 MHz 8500 - 8900 MHz 8900 - 9000 MHz 13400 - 13900 MHz 14500 - 15300 MHz 15400 - 15500 MHz The jamming is authorized at the frequencies listed until Oct 31, 96. If a complaint does occur, we can shut them down, since the authorization specifically says that the jamming can proceed at those frequencies as long as the exercise does not interfere with the VLA. Contact Clint Janes for further information and to make complaints. Clint Janes, VLA Frequency Coordinator/Phillip Hicks, VLA Operations Start Time End Time Form # Ant # Downtime 95Dec07 19:20:00 Array phasing up at 3 - 4 degrees RMS. Start Time End Time Form # Ant # Downtime 95Dec07 19:35:00 Observe log for AB628 sent to Sky Survey recepients. Start Time End Time Form # Ant # Downtime 95Dec07 19:35:30 0 0.00 Antenna(s) 22 - VLA CORREL (VLA Correlator) Problem(s); The integrator card for DCS 16, Quad/IF 2 was exchanged and unexchanged at this time. One record of data lost when this occurs. Observing Data: Lost Start Time End Time Form # Ant # Downtime 95Dec07 21:02:00 Array phasing at 2- 3 degrees RMS. Start Time End Time Form # Ant # Downtime 95Dec07 20:51:30 95Dec07 20:54:00 Interference27.00 67.50 RADIO FREQUENCY INTERFERENCE Problem(s); There are intermittent interference spikes of small to intermidiate intensities at this time on both pairs of IFs: IF settings are 3560 Mhz. Observing Data: Corrupted Start Time End Time Form # Ant # Downtime 95Dec07 21:46:00 Skipped into modified observer file 767P296B at this time. Start Time End Time Form # Ant # Downtime 95Dec07 22:42:38 **** Dave Thomas is your operator. **** Start Time End Time Form # Ant # Downtime 95Dec07 22:54:00 Source change to first scan of probe. Start Time End Time Form # Ant # Downtime 95Dec08 00:05:49 End of program AP296. Total Downtime = 67.5 minutes (0.8% of total time). AsciiFileOut Version: 1.02 -- Version Date: July 10, 1995 --============_-1393738384==_============--