Originally Posted by cburger
Thanks all for replies here. Vessels HF equipment
is 100 watts, antenna
tuner to end fed back stay, Kiss for ground. I am new to all this and am enjoying the learning
curve. My vessel is currently on hard for extensive repairs
and I mess around with trying to raise hams on different bands. The last attempt was trying to reach Cruisers Net control in Houston
, Tx. with the operator indicating he couldn't pull me out of the "Slop", considering he was over 1600 miles away from me in NY I thought that was pretty good and maybe a little more wattage would of made a difference. When I can find the time would like to install dedicated vertical antennas optimized for 20 and 40. Very often on 20 meters can here incoming signal crystal, and cant raise sender.
AhHa, now we know a bit more. I'm sorry to raise a big controversy which always happens when we talk about RF grounds on a boat
. As far as I know, the KISS ground is literally no more than a few wires strung along the inside of the hull
. If I am wrong, someone please correct me.
A few wires strung inside the hull
is not a good ground. You can't get enough straight length in all directions to make a 1/4 wave ground, which is required if you just use wires. On land we can use a number (usually at least 8) wires preferably buried in the ground in a 360 deg. radial pattern from the base of a vertical antenna
, loaded to look like 1/4 wavelength. The ground wires should be at least 1/4 wavelength at the lowest frequency in use.
For boats, we don't have the room for this, so methods other than just wires, are required. I think you'll get much better results if you connect a significant amount of copper sheathing epoxied to the hull inside the boat
, immediately below the antenna tuner. This creates a capacitive coupling to the seawater. Also connect the engine
, connect an outside grounding plate if you will, all with the shortest possible big wide copper straps to the tuner, and the tuner located just below the antenna feed.
You'll probably reduce RF interference
in the boat and get a bigger signal without stressing your pocketbook or the batteries