IF filter responses.

There are two first IF filters. The following table shows the receiver bands where each IF is used.

Rx Band                 IF             LO range                               Image                    

 20-300                    860          880-1160                 1740-2020                              

 301-700                  860          1161-1560                               2021-2420                              

 701-1000                                480          1181-1480                               1661-1960                              

 1001-1330              480          1481-1810                               1961-2290                              

 1331-1779              480          851-1299                 371-819                  

 1780-2000              860          920-1140                 60-280                    

 2001-3000              860          1141-2140                               281-1280                

The 480MHz filter is a SAW filter, and the 860MHz filter is a 3-section coaxial resonator filter.

480MHz 1^st IF SAW Filter.

50MHz wide span.