Advanced Marine Electrics and Electronics Troubleshooting A Manual for Boatowners and Marine Technicians
range and requires only 0.5 amp of current, so even for masthead-mounted sensors, the weight of wiring aloft will be low. As wit ...
Additionally, it is imperative that the elec- tronics specialist involved with any installation carefully check the interface pr ...
CHAPTER 16 Coaxial Cable and Antennas U nlike most other signal and power wiring, coaxial cable (or coax) is not merely a condui ...
Impedance Each type of coaxial cable has an inherent impedance, or opposition to current (it’s the high-frequency equivalent of ...
the cable and that replacement is in order. Signs of a poor coaxial connection or degraded cabling will be poor radio reception ...
trademark held by Times Microwave Systems (www.timesmicrowave.com). This cable is generally considered superior to any of the R- ...
Other 75-ohm cable sizes sometimes used in marine applications are RG-6 and RG-11, but these are rather difficult to find in mos ...
170 marine electronics installation and troubleshooting Minimum Bend Cable Type Radius (inches) RG-58/U 2.0 RG-8X 2.4 RG-8/U 4.5 ...
171 As you can see in the table, the connector impedance must match the device’s operating frequency spectrum as well as the cab ...
172 marine electronics installation and troubleshooting 13/64" 5/16" 5/16" STEP 1: Cut cable end even and strip outer jacket bac ...
coaxial cable and antennas 173 #702050, Ancor Marine, http://www.ancorproducts.com Coax Stripmasters, Ideal Tool, http://www.ide ...
to accommodate the connector barrel length plus about^3 / 4 inch on each end), the tubing will shrink down onto the pre- viously ...
Antenna Gain Antenna gain is a measure of an antenna’s effectiveness. It has to do with the radiated power of the antenna, but i ...
Standing Wave Ratio The standing wave ratio (SWR), which is the ratio of the maximum RF current to the mini- mum RF current on t ...
When considering an SWR meter, pay attention to its frequency range. For VHF use, it must able to operate in the 162 MHz fre- qu ...
including ICOM, specify a minimum width of 3 inches.) Because copper foil is the most common method for creating a counterpoise, ...
coaxial cable and antennas 179 copper screen waterline bonded through-hull fitting (seacocks shown) antenna copper ribbon “tape” ...
180 marine electronics installation and troubleshooting Stainless 3 dBwhip (VHF) Stainless whip (VHF) Fiberglass 6 dB whip (VHF) ...
181 bonded fittings, securing them with a hose clamp or other suitable mechanical fastener, such as a stainless steel bolt and w ...
automatic antenna tuner (if one is installed), as shown in the top illustration on page 179. Antenna Installation As mentioned a ...
«
3
4
5
6
7
8
9
10
11
12
»
Free download pdf