"Edward Feustel" wrote in message news: Pete,
The Ten Tec Transciever filters are at 9 MHz except in the "general
coverage up convert" receivers. in which case they are not narrow at
all.

Note that INRAD offers roofing filters 4-5 KHz wide at VHF frequencies
from 40 to 73 MHz ( see page 13 of their catalog ) with i/o impedances
of 50 ohms : http://www.inrad.net/inrad.php?mode=catalog

Ed, N5EI

Thanks Ed, I haven't kept with this at all. The INRAD 4 to 5 kHz BW
roofing filters sound very interesting though. A lot better than the
18-kHz BW 40.455-MHz monolythics I've played with in the past.

Pete