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Weather Satellite Images
 With color precipitation enhancement, map color and 10° grid. 
Produced by Thomas Williams, K9AC at Port Williams, Washington, USA 48° N 123° W 

Next up:  NOAA 15-53 E     07:50 PDT   Forecast  NWS  Discussion Satellite Receiver: Hamtronics R139
Add 7 hours for UTC
00Z (~7PM)    NWS 500 MB    12Z  (~7AM) Software: Puppy Linux and WXtoImg

NOAA 19 2018-04-19 05:02 PDT
NOAA 15 2018-04-18 19:39 PDT

NOAA 18 2018-04-18 19:27 PDT

NOAA 19 2018-04-18 16:43 PDT

NOAA 18 2018-04-18 09:35 PDT

NOAA 15 2018-04-18 08:16 PDT

NOAA 19 2018-04-18 05:14 PDT

NOAA 18 2018-04-17 19:37 PDT

NOAA 15 2018-04-17 18:26 PDT

NOAA 19 2018-04-17 16:55 PDT


Updated Satellite Predictions for Port Williams, Washington, U. S. A.

Start of Pass Image Available Maximum Elevation Frequency
Satellite UTC local time UTC local time (east or west) MHz
NOAA 15 19 Apr 14:50 19 Apr 07:50 19 Apr 15:05 19 Apr 08:05 53° E 137.62
NOAA 18 19 Apr 16:23 19 Apr 09:23 19 Apr 16:39 19 Apr 09:39 79° E 137.9125
NOAA 19 19 Apr 23:31 19 Apr 16:31 19 Apr 23:46 19 Apr 16:46 75° W 137.10
NOAA 15 20 Apr 02:13  19 Apr 19:13 20 Apr 02:28 19 Apr 19:28 70° W 137.62
NOAA 18 20 Apr 03:53 19 Apr 20:53 20 Apr 04:09 19 Apr 21:09 41° W 137.9125
NOAA 19 20 Apr 13:30 20 Apr 06:30 20 Apr 13:45 20 Apr 06:45 39° W 137.10
NOAA 15 20 Apr 16:05 20 Apr 09:05 20 Apr 16:27 20 Apr 09:27 39° W 137.62
NOAA 18 20 Apr 16:11 20 Apr 09:11 20 Apr 16:29 20 Apr 09:29 65° E 137.9125

QFH Self Phasing Receiving Antenna


Self-Phasing Quadrifilar Helix

Satellite image data is received with this antenna.
The support structure is made of plastic pipe. 
Helical elements are loops of LMR-400 coaxial cable. 
RG-8 Mini-Foam coax is used for the balun and feedline.
Dimensions are from John Coppens' Antenna Calculator.
Height is 4 meters above ground at the top.