Exploration showed that there was only one place I could install a parabolic antenna on my roof in order to aim it at a cell tower 3/4 of a mile away. Unfortunately, the line segment so drawn will go right past a garden-variety step-down transformer mounted on a utility pole. The anntenna's "beam width" suggests that a substantial amount of the signal concentrated at the parabola's focus (about 10%) will be radio interference from the transformer. (That's my best SWAG.) The antenna itself is optimized for frequencies in the 1700 MHz to 2100 MHz range ("AWS band").
I'm planning to install some kind of lighting arrestor. The only equipment I'll be protecting is a 184.00 battery powered Sonic "hotspot" at the other end of the antenna feed. It works quite well--probably because it has its own frequency filtering capabilities.
1) How much do I need to worry about interference from the transformer?
2) Assuming the answer is that it will introduce significant noise, can I assume that a "polyphaser" (the "DSXL" model lighting arrestor popular among ham radio operators) will filter out that interference? -Or does this "RF-filter-coaxial-lightning-protector" begin filtering only when lightning is hitting nearby?
3) The device supposedly passes only signals between 700 MHz and 2700 MHz. A description is found here: http://www.protectiongroup.com/Mark...Type/RF/RF-filter-coaxial-lightning-protector. One attraction of the device is its short "clamp time."
4) I'm considering using the DSXL instead of the more common "gas discharge tube," which can handle larger currents but doesn't filter anything and clamps slowly. Would I do best to use both a gas discharge tube and a polyphaser on the same run of coax or would the fact that they'll share the same earthing network cause unpredictable behavior during a lightning event?
I'm planning to install some kind of lighting arrestor. The only equipment I'll be protecting is a 184.00 battery powered Sonic "hotspot" at the other end of the antenna feed. It works quite well--probably because it has its own frequency filtering capabilities.
1) How much do I need to worry about interference from the transformer?
2) Assuming the answer is that it will introduce significant noise, can I assume that a "polyphaser" (the "DSXL" model lighting arrestor popular among ham radio operators) will filter out that interference? -Or does this "RF-filter-coaxial-lightning-protector" begin filtering only when lightning is hitting nearby?
3) The device supposedly passes only signals between 700 MHz and 2700 MHz. A description is found here: http://www.protectiongroup.com/Mark...Type/RF/RF-filter-coaxial-lightning-protector. One attraction of the device is its short "clamp time."
4) I'm considering using the DSXL instead of the more common "gas discharge tube," which can handle larger currents but doesn't filter anything and clamps slowly. Would I do best to use both a gas discharge tube and a polyphaser on the same run of coax or would the fact that they'll share the same earthing network cause unpredictable behavior during a lightning event?