Page 1 of 1
dual band antenna
Posted: Wed Aug 03, 2005 12:39 am
by medicnurse
need to know if it is possible to run a duad band uhf/ vhf on a single uhf 1/4 wave antenna with a diplexer.
Posted: Wed Aug 03, 2005 3:57 am
by k2hz
It would work fairly well with a VHF 1/4 wave since that would be 3/4 wave on UHF. A UHF 1/4 wave is too short to work effectively on VHF.
Dualband antenna...
Posted: Wed Aug 03, 2005 4:08 am
by Tom in D.C.
There are single, dualband antennas available that are the same size almost as a 1/4 wave VHF antenna. These are made by Comet, Diamond, and I run one that came from Antenna World in Florida and has an NMO mount. There's no need to compromise and risk an impedance mismatch on UHF by running a plain 19-inch whip because the dualband antennas can get pretty inexpensive.
Posted: Wed Aug 03, 2005 5:05 am
by Sam
I've been very happy with both the Maxrad MAX150/450 and also the Comtelco A1131, which has been mentioned on this board quite a bit. Both are VHF/UHF dual-band, and both are the same height as a 1/4 wave VHF with a little coil in the center.
--
http://www.maxrad.com/cgi/maxrad_produc ... alog=10003
http://www.comtelcoantennas.com/PDF%20D ... /A1131.pdf