Kenwood TM-D710A - Manual (Page 13)

7
ANTENNA cONNEcTION
Before operating, you must first install an efficient, well-tuned antenna. The
success of your installation will depend largely on the type of antenna and its
correct installation. The transceiver can give excellent results if the antenna
system and its installation are given careful attention.
Use a low-loss coaxial feed line that also has a characteristic impedance of
50 Ω, to match the transceiver input impedance. Coupling the antenna to the
transceiver via feed lines having an impedance other than 50 Ω reduces the
efficiency of the antenna system and can cause interference to nearby broadcast
television receivers, radio receivers, and other electronic equipment.
u Transmitting without first connecting an antenna or other matched load may damage the
transceiver. Always connect the antenna to the transceiver before transmitting.
u All fixed stations should be equipped with a lightning arrester to reduce the risk of fire, electric
shock, and/or transceiver damage.
SP  jack
External speakers (SP-50B)
SP 2 jack
To antenna
Antenna terminal
Feed line connector
AccESSORy cONNEcTIONS
n
External Speakers
If you plan to use external speakers, choose speakers with an impedance of
8 Ω. The external speaker jacks accept a 3.5 mm (1/8”) mono (2-conductor)
plug. We recommend using SP-50B speakers.
There are 2 speaker jacks on the rear of the transceiver: SP  and SP 2.