Kenwood R-5000 Instruction Manual

Also see for R-5000: Service manual Instruction manual Service manual Instruction manual Service manual

Contents

• Yagi AntennaThe Yagi antenna is best suited for reception in a specificband. This antenna features excellent directivity; it pro-vides high gain and minimizes interference when properlyinstalled. Yagi antennas commercially available are de-signed only for HAM band reception. For SW reception, itwill be necessary for you to construct such antennas your-• Wideband AntennasDiscone and log-periodic antennas can cover a wide fre-quency range. The discone antenna is omnidirectional andhas a widerange from VHF to UHF. (See Fig.7-7)Note:Antennas designed for HAM BAND will generally providesatisfactory reception for SW stations near the HAMBANDS. For antenna construction details, see the ARRLANTENNA HANDBOOK, or similar publications.7-2-2. GroundingNormally, the receiver will operate without being ground-ed. However, a good earth ground improves the efficiencyof antennas such as a long-wire. It also eliminates induc-tive noise and protects the operator from electric shocksthrough the AC lines.To ground the receiver, use a copper or brass plate (or netor rod) connected to a copper wire, and bury it in theground about 1 , 7 feet (0.3 ~ 2 m) deep. A copperwater pipe (not plastic) may also be used. Never use a gaspipe for grounding.If the receiver cannot be grounded well, the conterpoise(antenna radial) would be acceptable.33

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