On Sat, 4 May 2013 08:26:09 -0400, "Tom" wrote:

I have the Realistic Programmable scanner with 200 programable channels. A
lot of range there like 6 m, 2 m, 70 cm, marine, etc etc etc, wide range.

Realistic scanners have model numbers. Could I trouble you to
disclose the exact model number? Do you have a tower?

I want to put up an external antenna that I can hook it up to its own BNC
connection for external antenna. I believe the higher the better.

Forget about using long wire antennas as a scanner antenna. At
VHF/UHF, long wires look more like big RF chokes. It's unlikely to
hear much connected to an HF antenna.

There are numerous scanner antennas on the market. If you have a
tower for your HF antenna, you also should have room for a discone,
"spider", trapped vertical, or something similar. I don't know
exactly what to recommend as broadband antennas are always a
compromise between gain, bandwidth, vertical radiation takeoff angle,
size, etc. Something on this list should work (except for the
handheld and mobile scanner antennas).
http://www.universal-radio.com/catalog/scanants.html
RG-58a/u or RG-58c/u to between the scanner and antenna will probably
need to purchases seperately. Attach your own BNC or UFH connectors.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558