TESTING is the Fun part of radio. With simple tools and gear I can run tests with no one helping me. Simple testing for connection to a repeater. Signal quality and what distance can a HT 4 to 5 watts go? What antenna get more distance. <\/p>\n\n\n\n
What are the effects of the human body near an antenna? Or a tree or building, a mountain or a hill? Very hard to guarantee a signal. I try and look for 95% Confidence. Not 100%.<\/strong> I am not expert and a really new ham. I hope to spark an interest. Thanks to many who help along the way or email back when i have a question about their work and to thank them. <\/p>\n\n\n\n <\/p>\n\n\n What you buy may not be real or be a defect or not be as good as advertised. I found this out the hard way. I purchased a NanoVNA-H. A legit one. <\/p>\n\n\n\n My test uses a NanoVNA. The spec is published by the MFG. A gain of dbi means what? a lot of theory. I like to look a it this way 3dbi reaches out less is less depends on the transceiver watts and losses on the way. With a very specific combination I can get 12 miles to a repeater, and do this constant around 695. The height of the repeater is 727 Feet Estimated. much of baltimore is lower then that. <\/p>\n\n\n\n Calibrate 146 MHz to 147 MHz<\/p>\n\n\n\n Connect to Soup can\/Ground simulated, sitting on plastic table. 181 to 189 SWR <\/p>\n\n\n\n <\/p>\n\n\n\nHT (handheld) Antenna Test My data<\/h2>
ANTENNA<\/strong><\/td> dbi<\/mark><\/strong><\/td> SWR<\/mark><\/strong><\/td> OHMS<\/mark><\/strong><\/td><\/tr> Stock Baofeng GT5 (Ref)<\/td> 0<\/td> 3.0<\/td> 95<\/td><\/tr> Hustler Mono 2M 5\/8 Mag Mount<\/mark><\/em><\/strong><\/td> 3.4<\/td> 1.18<\/td> <\/td><\/tr> RA 701<\/td> 2.15<\/td> 5.0<\/td> 13<\/td><\/tr> RA 771 GOOD<\/td> 2.15<\/td> 1.4<\/td> 48<\/td><\/tr> RA 771 BAD<\/td> 2.15<\/td> 128<\/td> 450<\/td><\/tr> 48 Inch Tactical Yinitoni<\/mark><\/em><\/strong><\/td> 3.0 +<\/td> 2.5<\/td> 29<\/td><\/tr><\/tbody><\/table> ANTENNA TESTS <\/h2>