|500 Hz 455 kHz CW 7-pole Collins filter **DISCONTINUED** **BOARDS ONLY AVAILABLE**
Note: bandwidth is measured by the manufacturer at -3 dB; we measured shape factor at -60/-6 dB.
Note: Collins mechanical filters are no longer in production. This 500 Hz filter is discontinued. The Collins part number for the 500 Hz filter is 526-8693-010. This filter can be used with our daughter boards for the Yaesu FT-817, FT-818, FT-857/D, FT-897/D, FT1000/D, FT1000MP, FRG-100. We have the board available at $20 while inventory lasts. If you have the Collins 526-8693-010 filter and need the board, select transceiver model and order below.
The INRAD model #712 300 Hz Collins filters are currently still available for many Yaesu and other transceivers while inventory lasts.