Hi,
First - I am new to the nanoVNA and working a little every day to climb the curve. Antique antenna myths and an SWR bridge have defied me for several years since I moved to this location - even with a Johnson Matchbox and an L-network. I could rarely be heard farther than across the street with less than 50 watts.
Matching the radios I have with present propagation I started looking at my two antennas with the new instrument and Identified a "sweet spot" for each band with one of them and the Matchbox. I followed up with 4 watts from a PFR-3 and finally I could be heard hundreds of miles away on 40, 30, and 20 meters:)
More to come. I am going to play with some matching circuits at the base of that recalcitrant vertical. Whenever the Michigan winter ends:)
73,
Bill KU8H
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On 5/12/20 8:28 AM, Eric Furness via groups.io wrote:
I have a Nano F.? I used it on my Butternut HF9V antenna, a 9 band HF vertical.? It has been up for about 20 years.? Watching the swr and return loss during a spell of high winds showed a lot of changes going on.? Time to refurb antenna.? Took it all apart, put it back together with zinc paste for aluminum to aluminum connections.? I found a bad doorknob cap, had loose terminal.? I replaced all the doorknob caps. Now antenna shows all the swr and return loss dips where they should be.? I could never have done this with my MFJ analyzer.? Really a fine instrument for the price.
Eric WA3UYI
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bark less - wag more
