ka3jjz
Wiki Admin Emeritus
From SWLing.com...
The only comment or two I would make here would be that you wouldn't want to connect a preselector directly to a whip antenna on a portable (It's mentioned in the Suggestions for MFJ section). There's usually some kind of small amp and / or matching at the base, and applying RF directly could, in some cases, swamp the receiver.
Otherwise it's a good read. Indoor active antennas must be used with some caution, as is noted here, because sometimes it can actually amplify more noise than signal. One experiment that might prove interesting is using this with a YouLoop, instead of using the whip antenna or a wire strung around a room. As you can build a YouLoop yourself, it makes for an interesting combination
Mike
Testing the MFJ-1020C Active Antenna/Preselector
By Jock Elliott, KB2GOM Truth be told, I’ve been curious about the MFJ 1020C for a long time. Back when I wrote for Passport to World Band Radio, over a decade ago, I wondered if the 1020C was a wo…
swling.com
The only comment or two I would make here would be that you wouldn't want to connect a preselector directly to a whip antenna on a portable (It's mentioned in the Suggestions for MFJ section). There's usually some kind of small amp and / or matching at the base, and applying RF directly could, in some cases, swamp the receiver.
Otherwise it's a good read. Indoor active antennas must be used with some caution, as is noted here, because sometimes it can actually amplify more noise than signal. One experiment that might prove interesting is using this with a YouLoop, instead of using the whip antenna or a wire strung around a room. As you can build a YouLoop yourself, it makes for an interesting combination
Mike
