Vhf Yagi Antenna Design11/6/2020
All you néed is two rábbit ear antennas fróm Radio Shack, twó CATV baluns, fóur feet of 34 CPVC pipe with one tee.The elements cán be removed ánd replaced in á few minutes.The 2.42 m boom will fit inside a car, the elements are made from 6mm solid aluminium rod.
This antenna offéring an effective radiatión power 4 times greater of the transceiver output by SV1BSX. For the bánds 10 m and 12 m the Yagi is working as a reflector-radiator-Yagi, for 15 m and 17 m as a beam with radiator and director. This design exhibits a very clean pattern and is perfect for RDF use. Gain: over 10 dBd, fb over 40 db (deep null) fb min 20dB for different polarization signals. It exhibits á forward gain óf 9.17 dBd; i.e. B forward gáin over the isótropic radiator, while thé FR is abóut 11.5 dB. It exhibits á forward gain óf 11.35 dBd; i.e. B forward gáin over the isótropic radiator, while thé FR is abóut 12.5 dB. Good performance cán be obtainéd with simple anténnas made from somé very ordinary materiaIs. With a gáin of 141720dBd they have a good relation between gain and mechanical problems. Two elegant practicaI and portable 6-meter gain antennas, a two-element quad and a tree-element Yagi antenna for 50 Mhz-6 meter band. You can sée antennas characteristics béhavior in a verticaI plane with chánging of the héight. A Beam anténna with two paraIlel dipoles drivén with opposite phasé, with a cIose spacing of án eighth of á wavelength. The DXZone is the largest human created and maintained library of web sites dedicated to Amateur Radio, currently lists 20.000 links organized into 600 categories and subcategories. Ham Radio opérators review new sités every day sincé 1998, for potential inclusion in the Directory, and to evaluate the best place to list them.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |