[3830] RTTY WPX 7L4IOU SOAB QRP

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                    CQ WW RTTY WPX Contest

Call: 7L4IOU
Operator(s): 7L4IOU
Station: 7L4IOU

Class: SOAB QRP
QTH: Tokyo
Operating Time (hrs): 15:30
Radios: SO2R

Summary:
 Band  QSOs
------------
   80:    2
   40:   39
   20:   91
   15:   77
   10:    8
------------
Total:  217  Prefixes = 128  Total Score = 74,368

Club: JARTS

Comments:

I was planning SO2R by two filters as 
 80,40M:TS-930S --> LPF LPF --> Dipole 
 20,15,10M:IC-756PRO --> HPF --> 3ELE YAGI 
but there are some troubles. 
Too much 2nd harmonics from 40m to 20m. 
  Is harmonics generated outside of TX? 
A weak filter. The reason of QRP. 
Anyway, the contest started. 
W and VEs were open together on 20m and 15m Saturday morning. 
No Answer on 40m, low band condition was tough to QRP. 
so I changed strategy and begun to make DIPLEXER for 20m and 15m/10m. 
It completed at the early morning on Sunday 
and it was enough for opening on NA. 
Operation time was 16 hours, but more spare time was consumed 
for DIPLEXER and filters. for design, soldering, adjusting... Hi 
Special thanks to the stations who accepted my weak signal.
73, Hisami


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