Intro

• ModeA
• chan 3: 1233,1248
• chan 4: 1242, 1256

Punta salinas did not go to modeA during jul14

    The schedules sent to punta salinas for jul14 are:

• 2 Pages  are made for each month
• the top frame of each page is a dynamic spectrum for the month
• horizontal scale is frequency, vertical axis is day of month
• darker is less power, whiter is more power
• the bottom frame is the average over the month for the 1325 MHz band
• Page 1: with all radars:
• the vertical colored lines flag
• punta salinas (chan 2,3,4,5,7,10,11,18) 
• FAA radar
• punta Borinquen radar
• Aerostat Radar
• Page 2: flag the different freq channels of punts salinas
• channels 2,3,4,5,7,10,11,and 18 are flagged using different colors

•  that chan 4,5,17,10,11,18 was used sparingly
• channel 2,3 are on most of the time

• all channels were used about the same (except for 06-09jul) when only chan2,3 were used

• 01jul14  thru j16jul14 (.png)
• 16jul14 thru 31jul14 (.png)
• channels 2,10,11, and 18 are plotted
• the two frequencies for each channel were added
• and offset was added to the last 3 channels for plotting
• the vertical scale is a log (dbm from the spectrum analyzer).
• the white lines at the bottom of each channel is the zero baseline.
  
• This is the value we should have measured if radar was broadcasting.
  
• The vertical lines show when modeA was requested by AO:
• green : start of modeA request
• yellow: end of modeA request
  

 Summary

• Mode A was channel 3 and 4
• in may2014 punta salinas started using channel 2 and 3 for modeA
• this is probably to get away from the aerostat that broadcasts near 1256 MHz
• During jul14 it does not appear that punta salinas went to modeA when we requested them to.
• Looking at some data in aug14 it seems they are still not going to modeA
• I checked 07,08aug14.