TOWER TALK ON TEN (10 GHz TV TOWER REFLECTIONS)

摘要

Ten GHz is normally thought of as one of those "line-of-site" bands except when operating from an elevated location, bouncing off the moon, rain scatter, or during enhanced propagation (ducting) conditions. However, it is possible to have extended range contacts at any time under normal conditions by reflecting signals from what is normally the highest structure in most locations. In many medium to large cities, and numerous smaller cities, the highest structure is usually the television transmitting towers. The TV station operators learned long ago that they can propagate the longest distance by locating their transmitting antennas on tall towers, more often than not, on top of some of the tallest hills or mountains around. Fortunately for hams, the TV stations have provided 10 GHz operators a terrific source for making those longer range contacts using relatively small antennas and low power. Contacts in the 70 to 100 mile range, or even twice that range in some circumstances, are well within reason.