0000160: At 92cm the Ampls of BY*Y(MFFE-13) are low in band0-6
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ID Category Severity Reproducibility Date Submitted Last Update
0000160 [RT] 0.unknown/unspecified major always 11-08-09 11:49 04-01-11 14:45
Reporter Yuan Tang View Status public  
Assigned To Hans van der Marel
Priority normal Resolution fixed  
Status resolved  
Summary 0000160: At 92cm the Ampls of BY*Y(MFFE-13) are low in band0-6
Description At 92cm the Ampls of BY*Y(MFFE-13) are low in band0-6.
Additional Information
RT B
Attached Files

- Relationships

- Notes
(0000178)
Jurjen Sluman
24-08-09 07:11

 MFFE is replaced by another one is now in the building
 
(0000179)
Jurjen Sluman
24-08-09 07:15

 But this new MFFE still has the problem as written on top
 
(0000195)
Yuan Tang
06-11-09 10:47

 20091106
I have checked that there was no MFFE changed during 22-25/08,2009.
It is still MFFE-13 on RTB. So the problem might be MFFE dependent.
And the problem is always there till now.
 
(0000214)
Hans van der Marel
17-12-09 10:56

 Msdecom always gives an amplitude 5-10% lower than expected. This also appears with other MFFE's.
 
(0000326)
Hans van der Marel
04-01-11 14:45

 The issue does not appear anymore. It is not clear what has happened to resolve it.
 

- Issue History
Date Modified Username Field Change
11-08-09 11:49 Yuan Tang New Issue
11-08-09 11:49 Yuan Tang MFFE  => 13
11-08-09 11:49 Yuan Tang RT  => B
11-08-09 11:49 Yuan Tang MFFE-band  => 92cm
11-08-09 11:49 Yuan Tang polarisation  => Y
11-08-09 11:50 Yuan Tang Assigned To  => Hans van der Marel
11-08-09 11:50 Yuan Tang Status new => assigned
24-08-09 07:11 Jurjen Sluman Note Added: 0000178
24-08-09 07:15 Jurjen Sluman Note Added: 0000179
06-11-09 10:47 Yuan Tang Note Added: 0000195
17-12-09 10:56 Hans van der Marel Note Added: 0000214
17-12-09 10:56 Hans van der Marel Status assigned => progressing
01-03-10 09:42 Harm Munk Project MFFE => RT
04-01-11 14:45 Hans van der Marel Status progressing => resolved
04-01-11 14:45 Hans van der Marel Resolution open => fixed
04-01-11 14:45 Hans van der Marel Note Added: 0000326