Coordinators report

CP-1 and CP-6, 13 July-14 July 1995.

M. T. Rietveld was coordinator. Jussi and Kent-Ove were on duty at the remotes.

The CP started on time (0800) on 13 July with all sites operational.
The VHF was run with two klystrons. PMSE was seen much of the time on VHF, as 
well as sporadic E often. Geomagnetic conditions were quiet.
The radars functioned well with no problems appearing. The test programme for the 
alternating code, performed before the CP, did not work with the 46.6 MHz crystal but 
did with 45 MHz. We ran the CP with 45 MHz. Arild thinks that only the test does not 
work with the 46.6 MHz crystal and that the decoding does. It does make the test a 
weak one if true. This should probably be followed up, and least documented.

The monitor for unusual echoes was run on the CP-1 long pulse echoes. As expected, 
nothing interesting was found. The standard realtime analysis of CP-1 long pulse 
showed a gate (213 km) which frequently failed to fit. GUISDAP showed a similar 
effect in that the ion temp was returned as being very high. Peter Collis subsequently 
re-analysed this data and I quote: " I re-analysed the CP-1 data with a strategy that 
made only one fit above 200 km. This got rid of the fit failures at 213 km - they were 
due to the program not being able to find solutions (despite dozens of iterations) using 
the start values of Te=Ti from the first fit of the two-fit strategy. I don't recall this 
happening before - perhaps the Te/Ti ratio was just over some threshold that we don't 
usually see."



M. T. Rietveld  5/8/95