[Scan-DC] VHF/UHF Lo Pass Filter

[Jack Smith]

Coilcraft makes a line of 7-pole low pass filters, with cut off
frequencies ranging from 300 KHz to 500 MHz.

http://www.coilcraft.com/lcfilt.cfm

The 300 MHz version meets your requirements.

If you ask for a sample, they will send you one free. Hard to beat free
for a price. You have to provide the enclosure and connectors, of course.

I've used the 60 MHz version in a kit I designed and sold as well as a
few of their other frequency filters and found these to be first class
products.

As with any filter at 300 MHz, of course, how you mount it, shield it
and connect it to the outside world will make a major difference in how
it performs.

If you want an already built filter, Minicircuits makes several. For
example http://www.minicircuits.com/pdfs/VLFX-225.pdf

These run around $50 each and are high quality filters with decent
shielding and parts that provide filtering well up into the multiple
GHz  range.

Jack K8ZOA


W4NNG wrote:
> Anyone know of a low cost, or a simple to fabricate low pass RF 
> filter.   Cut-off freq can be between ~200 to 500 Mhz 
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