First, a complete disclosure. I have installed a dozen or more SSB radios as a service technician over the years. But my first two installations were on our own boat and I started with no previous knowledge and only the manufacturers manual. To make matters worse, we had no internet to do any research on and most installers would have us believe that there was some kind of magic and mystery to installing an HF radio. We quickly found out that was not the case, and installing one of these radios was no more difficult than installing any other piece of equipment. Eighteen years later, we are installing the most current Icom offering, the 802, on Beach House in preparation for future cruising. And once again, it was not all that difficult.
First, we needed to decide where the rig would be mounted. This does take some consideration since the ease of access when using the radio, the wire runs, where to mount the main unit, the automatic tuner and the ground or counterpoise connections are all factors. We chose the forward cabin as our "radio shack" because it would have the radio out of the way of all other equipment, give the operator some separation from all the other noise in the boat and give us easy access to running the necessary cables. We also chose to use the mounting brackets for the remote control head and speaker rather than flush mount them. Flush mounting would mean cutting some pretty big holes in a bulkhead and if we every decided to remove the radio or find we had to move it, we would be stuck with the holes.
RG 8U coaxial cable with PL259 connectors on both ends runs from the main unit to the automatic tuner. Another common problem is improper soldering of the PL259 connectors. Positive and negative wires from the main unit to a DC power source are also needed. I always run the power cables directly to the battery bank and fuse both the positive and negative wires at the battery. I have found that connecting an HF radio at the distribution panel almost always creates RF issues in other electrical equipment. The wire should be sized based on the overall run to the battery and back so that voltage drop is kept to a minimum. I don't connect the power cables until the very last, after everything is installed. All wires and cables should be well-secured so they can not chafe or accidentally disconnect. We have had the Pactor Modem cable come out on its own and it took a while to figure it out.
AT-140. Other cruisers we know have used other manufacturers tuners with great success. We tend to stay with what we know and we have had the AT-130 and AT-140 in the past. We also decided to try a different approach with the ground or counterpoise for this installation. This was my first install on a powerboat, so the antenna setup was a little different than past installations. The typical SSB installation will have a copper foil strap, about two to three inches wide, run from the ground lug on the tuner to a Dynaplate and/or thru-hulls that are in contact with the water. This is how I have done our own and others installations in the past. But in researching how we planned to do this on board Beach House, we found a radial-type counterpoise called KISS SSB. The reviews and feedback from others were very positive and the idea of not having to run copper straps all over the boat was very appealing. The copper straps will corrode over time and degrade the radio's signal strength. We are so pleased with the KISS SSB system that we have become suppliers and can offer them at a good discount.
OPC 1147n cable, and the Icom manual tells you to connect that ground wire to both the main unit and the tuner. There is even a special lug for this. DON'T DO IT. It will cause additional noise and interference on the radio. With the remote controller, speaker, main unit and tuner all connected, it was time to work on the antenna.
GTO 15. Only the inner core wire is used and a simple crimp on connector is attached at one end to the tuner via an insulated connection and a wing nut on the opposite end from the connections to the main unit. The important factor here is that the GTO cable MUST be kept away from all other electrical wiring, panels and electronic equipment, especially autopilots. The GTO connection cable is also part of the antenna itself and puts out significant RF. For our installation, we were able to run the GTO from the tuner, behind a space along our main salon settee, to an unused open space behind the medicine cabinet in the aft head. There was also access to this space to mount the base of the antenna. The base that we purchased from Morad allows us to lay the antenna down when transiting under bridges. This same area allowed us to mount the antenna almost at the deck level, so it only rises above the bimini about 7 feet. It looks better esthetically and functions as it should.
At 23 feet in length, an intermediate support is needed as high up as possible. Since our installation put the antenna behind the bimini frame, the next logical place was the rail at the aft end of the flybridge. The support supplied from Morad was very well made and they even made us a special attachment for the one-inch rail since the support was designed to fit a two-inch tube. This put the support at about 8 feet and made the antenna quite secure. There is a simple latch that allows the antenna to be released and lowered down to the deck if needed. We ordered the UPS version of the antenna, so named because it came in three pieces, the two longest being eight feet. This allowed us to ship it UPS without expensive extra charges. The two lower sections are powdered coated aluminum and the top section is stainless steel. The whole antenna is very well made and very robust. We don't envision any problems, even in high winds and heavy seas. With the tuner now connected to the antenna, it was time to connect the power to the radio. When the positive and negative wires are connected to the battery, you will get a spark. This is normal.
One additional piece of advise for the installation. We have found that no matter how well the install, there always seems to be interference to or from other electrical equipment. Our 12-volt fans were the only culprit this time, but in the past, other equipment has caused problems. Refrigeration, alternators and most electric motors will make a lot of noise on frequency. Keeping all of the cables and wires as far away as possible will help as will connecting the power cable directly to the batteries. If all else fails, we find the clip-on ferrites can help with the noise and leaking RF. These ferrites on both ends of any cables, as close to the attachment point as possible, makes a significant difference. Attached to the power cords for fans and motors near the motor itself will help, and sometimes several will be needed. Ferrites can be found at almost any electronics supplier and should be sized to fit the wire as snugly as possible. To find the source of any interference, turn on the radio and tune it to the noisiest frequency. Then, turn the power off one at a time to each electrical source on the boat. The noise will go away as soon as you find the culprit. Then, either move some wiring or add the ferrites. With everything in place, it was time to test the rig.
Here are some Cruisers Nets for the Caribbean from Noonsite....
Bahamas Cruiser Net
VHF Channel 68
08:15 local time for Marsh Harbour Abaco, Bahamas.
Bahamas Weather (BASRA)
4003 kHz at 1100 UTC
6215 kHz at 1000 UTC (Uncontrolled 1000-1200).
Caribbean Maritime Mobile Net
Run by Lou, call sign KV4JC, on 7241 kHz at 1100 UTC. At 1115 UTC weather forecast from St. John (USVI). Following this report on 7086 kHz FAX, Slow Scan TV and other weather info etc.
Caribbean SSB Weather Net
Controller Dave. 8104 kHz at 1230-1300 UTC and 12362 kHz at 1300-1330 UTC. Comprehensive Weather for Caribbean region.
Caribbean SW Net
8107 kHZ at 1330 UTC. Weather and information Caribbean coast of Panama and Colombia.
Caribbean Safety and Security Net http://www.safetyandsecuritynet.com, SVSecondM@aol.com
An interactive high frequency radio network of cruising yachts which meets each morning on SSB 8104.0 at 1215 UTC for the purpose of exchanging information with regard to safety and security concerns while cruising in the Eastern Caribbean. More info at their website.
Marine Weather Centre
Tel: 001 863-248-2702 www.mwxc.com, firstname.lastname@example.org
Opening Hours: Telephone Best times 10am-2pm EST (except Weds 10-1)
Custom weather reports for the Carribbean, Bahamas and Eastern Atlantic Ocean via SSB, phone or web. See website for more details.
Maritime Mobile Service Network http://www.mmsn.org/
The Maritime Mobile Service Net is operational every day from 12:00 p.m. until 9:00 p.m. Eastern Time, and from 12:00 p.m. until 10:00 p.m. Eastern Time during Daylight Savings, on a frequency of 14.300 MHz., in the 20-meter amateur band. The network also operates on the alternate frequency of 14.313 MHz. The Maritime Mobile Service Network immediately follows The Intercontinental Traffic Net. Coverage extends via relay stations to most of the Atlantic Ocean, Mediterranean Sea, the Caribbean Sea and the Eastern Pacific Ocean.
Salty Southeast Cruisers Net www.cruisersnet.net
Up-to-date information about cruising southeastern United States and the Bahamas.