Weather Fax


Weather Fax, Weatherfax, Radiofax, Fax and
Marine Electronics
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Radiofax
or Weather Fax is transmitted in single sideband and uses frequency modulation. The signal shifts up or down a given amount to designate white or black pixels. A deviation less than that for a white or black pixel is taken to be a shade of grey. With correct tuning (1.9kHz below the carrier frequency for USB, above for LSB), the signal shares some characteristics with SSTV, with black at 1500Hz and peak white at 2300Hz.

Usually, 120 lines per minute (LPM) are sent (though some stations use 60 LPM or other values). A value known as the index of cooperation (IOC) must also be known to decode a radio fax transmission - this governs the image resolution, and derives from early radio fax machines which used drum readers, and is the product of the total line length and the number of lines per unit length. Weather Fax now is available on LCD display products, and no longer requires "stinky" aluminum anodized paper to be produced and displayed.




* More Data and Information on Weather Fax

* More Data and Information on Satellite Weather

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Image for 000 All Products Index for Furuno Marine Electronics  Furuno  000 All Products Index for Furuno Marine Electronics     Call For Price 
Image for Furuno FAX30 Weatherfax and Navtex Receiver for Navnet and PC  Furuno  Furuno FAX30 Weatherfax and Navtex Receiver for Navnet and PC Buy Now   $1,022.00 
Image for Furuno FAX408 8" Thermal Paper Weather Fax Receiver  Furuno  Furuno FAX408 8" Thermal Paper Weather Fax Receiver     Call For Price 
Image for Furuno FAX410/AC 10" Thermal Paper Weather Fax Receiver, 110v  Furuno  Furuno FAX410/AC 10" Thermal Paper Weather Fax Receiver, 110v Buy Now   $7,859.00 
Image for Furuno FAX410/DC 10" Thermal Paper Weather Fax Receiver, DC  Furuno  Furuno FAX410/DC 10" Thermal Paper Weather Fax Receiver, DC Buy Now   $7,859.00 
Image for JRC JAX-91 15" Weather Fax  JRC  JRC JAX-91 15" Weather Fax Buy Now   $10,465.00 
Image for JRC JAX-9B 10" Weather Fax  JRC  JRC JAX-9B 10" Weather Fax Buy Now   $2,459.00 
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Image for Furuno CH37 Sector Scanning SONAR, 162 kHz -DISCONTINUED  Furuno  Furuno CH37 Sector Scanning SONAR, 162 kHz -DISCONTINUED     Call For Price 
Image for Furuno FAX30 Weather Fax for Navnet Video Overview  Furuno  VIDEO: Furuno FAX30 Weather Fax for Navnet Video Overview     Call For Price 
 
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