The ID800 has 2 different lo IF crystal filters, FL1 and FL2 that connect to a switching network. The wide is used with 20khz FM and the narrow is used with 12.5 khz FM and DV. Measuring the emission mask of the DV signal in transmit, it is -26 dB @ 6.25 kHz and around -60 dB @ 12.5 kHz bandwidth.
The filters are: FI1 2020001460 CER CFWLA450KHFA-B0 FI2 2020001270 CER CFWLB450KE2A-B0 Steve let_cyber wrote: > Does anyone know what IF filter Icom is using for DV? Is it an off the > shelf crystal filter? Maybe 6 or 7 kilohertz wide. They would need a > 15 kilohertz filter to do standard FM. They would have to switch > between filters? hmm... > > -- "It is a poverty to decide that a child must die so that you may live as you wish." Mother Teresa [Non-text portions of this message have been removed]
