Hi Guy's
I purchased a 300Hz 455KHz 7-pole CW Collins filter for my FT-857D, but it
does not work and is not recognized by the transceiver (which keeps showing
Filter 1). I also own a FT-817ND fitted with 500Hz Yaesu filter.
I installed this 500Hz filter inside the FT-857D and it works perfectly, it
is recognized and the rig shows 500Hz.
On the other end, I installed the 300Hz Inrad filter inside the FT-817ND, it
works fine.
Could you please explain why the Inrad 300Hz filter is not recognized and
does not work with the FT-857D ?
Thank you in advance and best regards.
73 Laurent F8BBL
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