[Elecraft] K3 Low Pass Question

[Geoffrey Mackenzie-Kennedy]

David,

A Low Pass filter cutting off above 6m is useful here, because our not so 
local FM BC station operates just above 100 MHz.

I suggest that if you do convert a LPF, do not use small toroidal inductors 
(unless "air wound") if the filter is to be used between a receiver and an 
antenna feeder. Small cores can create IMD problems ftom BC stations etc, 
which is one reason why the solenoid type of inductor is used.

73,

Geoff
GM4ESD


David Cutter wrote on Friday, June 18, 2010 9:27 AM:

> I was idly wondering if I should convert them to something useful, perhaps
> to a band pass filter.  There's room to fit small toroid inductors instead
> of the solenoid types.  Then again, with the Elecraft line up I probably
> wouldn't benefit much, but it would be an interesting project.