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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 15-72 E     18:29 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 2017-07-23 16:25 PDT
NOAA 19 2017-07-23 14:46 PDT

NOAA 18 2017-07-23 09:53 PDT

NOAA 15 2017-07-23 08:49 PDT

NOAA 18 2017-07-23 08:10 PDT

NOAA 15 2017-07-23 07:07 PDT

NOAA 19 2017-07-23 04:55 PDT

NOAA 18 2017-07-22 19:53 PDT

NOAA 15 2017-07-22 18:56 PDT

NOAA 19 2017-07-22 16:36 PDT


Updated Satellite Predictions for Port Williams, Washington, USA

Start of Pass Image Available Maximum Elevation Frequency
Satellite UTC local time UTC local time (east or west) MHz
NOAA 15 24 Jul 01:29 23 Jul 18:29 24 Jul 01:44 23 Jul 18:44 72° E 137.62
NOAA 18 24 Jul 02:39 23 Jul 19:39 24 Jul 02:54 23 Jul 19:54 77° W 137.9125
NOAA 19 24 Jul 11:41 24 Jul 04:41 24 Jul 11:56 24 Jul 04:56 56° E 137.10
NOAA 18 24 Jul 14:57  24 Jul 07:57 24 Jul 15:12 24 Jul 08:12 34° E 137.9125
NOAA 15 24 Jul 15:21 24 Jul 08:21 24 Jul 15:35 24 Jul 08:35 64° W 137.62
NOAA 18 24 Jul 16:38 24 Jul 09:38 24 Jul 16:53 24 Jul 09:53 41° W 137.9125
NOAA 19 24 Jul 23:11 24 Jul 16:11 24 Jul 23:26 24 Jul 16:26 58° W 137.10
NOAA 15 25 Jul 01:05 24 Jul 18:05 25 Jul 01:19 24 Jul 18:19 45° E 137.62

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.