An adapter board is now available which allows installation of an 8 pole
International Radio filter in place of the 6 pole OEM filter. Two filters
are available with the adapter installed, a 2.1 kHz #709.1 and a 1.8 kHz
#711.1. Instructions are provided for removal of the OEM unit and
replacement with the IR unit. The 709.1 is 2.1 kHz wide at -6 dB and 3.15
kHz wide at -60 dB. The OEM is 2.45 kHz wide at -6 dB and 4.3 kHz wide at
-60 dB.
George
w2vjn@rosenet.net
www.qth.com/inrad
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