[time-nuts] common mode loran comparisons

[tom jones]

I'm getting great results monitoring daily phase changes of the fallon loran master station.
  I don't have any computer logging from my austron 2100's but manual readings taken several times a day show 10 to 30 nanosec of phase change throughout the day and about 0 to 10 ns day to day and about 0 to 30ns week to week.
   
  I have an hp-5061 providing reference for two seperate 2100's one f model the other is the timing type.both austrons readings agree with each other.
  I also have sirf type 1pps gps receiver that agrees with the long term phase changes of all the above.
   
  The reading are good enough to participate in common mode measurements with fellow time-nuts that have cesium and austron 2100 loran monitors.
   
  I'm using a funaro 80 marine loran as an antenna pre-amp for the 2100's coupled by capacitors.to the austron.  Any old loran that has two wire antenna coupler could be used as a preamp for the austron 2100.
    The austron 2100 does not provide power for said coupler so you should use matching receiver thats belongs with antenna coupler.
   
  My antenna is indoor and works fairly well without preamp but works better with furano loran preamp.  I've never owned the orignal antenna designed for the austorn 2100 but assume it works well.
   
  My recent data;
  Time  loran1  loran2 gps  date      doy
  12:24 -013     -025   772  5-27-07 147
15:00 -011     -024   784  5-27-07 147       
06:13 -014     -026   759  5-28-07 148
09:43 -014     -026   771  5-28-07 148
14;07 -010     -023   799  5-28-07 148
  20:11 -009     -022   807  
  05:28 -013     -025   775  5-29-07 149             
10:25 -014     -028   743 
18:06 -016     -029   739 
21:40 -013     -026   760 
  05:27 -015     -028   745  5-30-07 150
  06:14 -016     -028   754  5-31-07 151
  07:25 -018     -031   722  6-01-07 152
  07:13 -014     -027   777  6-02-07 153
       
I would enjoy comparing this measured loran data with someone elses.
   
  Nist & unso aren't monitoring chain 9940 so I need help from fellow time-nuts.
   
   

 
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