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Hi Kevin
Also remember that the big span you selected and with the 101 point for the NanoVNA there is 3.66MHz between you measurement points
Kind regards
Kurt

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Fra: [email protected] <[email protected]> P? vegne af Kevin B
Sendt: 30. december 2019 00:47
Til: [email protected]
Emne: [nanovna-users] I lost....

Ok I'm new to all this and I'm confused now. I am testing a vhf 1/4 wave base antenna. I get horrible range, like a mile on simplex, 25 watts about 30 feet up... so wanted to do some testing. I set the VNA to 110-480 MHz, line loss (think that's what it's called) and swr. See pictures. I was expecting a dip somewhere close to where I expect it to be tuned for and nothing. There isn't really any dips... Based on what I see the antenna is has good swr everywhere (not possible). How is it possible for the swr to be less than 1.5 from 110-480 MHz. Is this unit garbage or an I doing something wrong? I'm new to these and their technology but I think I know what I'm doing... Sorry I couldn't get clear pics...