Richard Sharp, KQ4KX wrote: > which will reduce and/or eliminate any IMD issues from those sources. > DCI is one manufacturer of window filters for HAM bands (www.dci.ca > <http://www.dci.ca>).
Careful. I've looked over their product line and their stock filters have published SWR numbers that don't look good for high 147 and low 145 repeaters... they tend to be made for the center of the band for the end-users, not for repeaters. The skirts on even their 4 MHz wide filters start to roll off if your machines are at either end of the spectrum. Check carefully if you choose to use their filters, or call them and ask them if they'd tune them lower/higher (probably for a charge). Better yet, buy big, real, high-Q bandpass cavities and don't mess around with these little things made for hams at home. Nate WY0X
