User manual

Mailing: PO Box 3526, Bellevue, WA. 98009
Shipping: 13737 SE 26
th
St. Bellevue, WA. 98005
Toll Free: 800-259-7331 * Phone: [phone] * Fax: [phone]
www.sgcworld.com * Email: [e-mail]
25
3.3.5.3 Dipoles with Matching Lines
Some antennas, such as
the G5RV, use a section
of ladder line as a
matching device. These
transform the impedance
of feed point to
something near 50
ohms. Usually, the
ladder line terminates in
a 1:1 balun. The Coaxial
line from the transceiver connects to the balun. The MAC-200 can
feed this connection directly from one of the coax ports or you can
remove the balun run the ladder line directly to the MAC-200
balanced feed line port.
Mailing: PO Box 3526, Bellevue, WA. 98009
Shipping: 13737 SE 26
th
St. Bellevue, WA. 98005
Toll Free: 800-259-7331 * Phone: [phone] * Fax: [phone]
www.sgcworld.com * Email: [e-mail]
26
3.3.5.4 Long Wires & Inverted Ls
Long wire and
inverted L antennas
are unbalanced
antennas. They are
fed from the upper
LONGWIRE
connection directly
with a single wire.
CAUTION: Unbalanced antennas are radiating from the line as
soon as they leave the MAC-200. Minimize the amount of wire
inside the radio room to prevent interference with electronic
equipment. Minimizing power will also minimize interference
caused by this kind of antenna.