This filter is a great upgrade for 900, 1.2/1.3 GHz receiver.
The D480A is a17.6 MHz bandpass filter, which is narrower than the one tha comes in most wireless receivers.
This filter will not only reduce noise but also increase receiver sensitivity thus increasing the range.
Note: Soldering equipment minimum 40W, soldering skills and knowledge is required to install this filter. Opening your receiver to install this filter will void the warranty.