Ignore S/V Illusion post #7 - they may be thinking about the coax from the actual radio
to the tuner not the GTO-15 which is run from the tuner output to the antenna/backstay. As stated above GTO-15 is a copper stranded conductor that is surrounded by a thick coating of flexible plastic insulation
. The insulation
is to prevent anybody getting shocked should they grab the cable while the radio
is in transmitting mode.
- - A simple ring-type terminal lug is used. The end of the GTO-15 insulation is stripped back to expose the bare copper wire. That is inserted into the terminal lug and then you use a crimper tool (like a pair of pliers) to squeeze the metal terminal to mechanically grasp/grab the GTO-15 copper wire. Then the terminal lug is attached to the large insulated "cone" output terminal of the tuner.
- - The other end of the GTO-15 cable is stripped back and the copper conductor is attached to the antenna/backstay using whatever works best. Normally then this connection is buried under self-vulcanizing electrical
tape to keep water
and oxidation to a minimum.
- - All of the GTO-15 cable is an active "antenna" from the place where it leaves the tuner to where it is attached to the external antenna/backstay. So it should be as short as possible and the portion underneath the boat's deck
should be kept to a minimum. Additionally it is recommended that when running the GTO-15 cable up any shrouds or stays that it be attached by 4" stand-offs. These "stand-offs" prevent the broadcasting RF signal from being absorbed by the grounded shroud
or stay and allow the maximum RF to be transmitted by the antenna/backstay.