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From: Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>
Newsgroups: sci.electronics.design
Subject: Re: Quarter-wave whip earth plane
Date: Tue, 11 Mar 2025 08:55:42 -0000 (UTC)
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Joerg <news@analogconsultants.com> wrote:
> On 3/10/25 7:11 PM, Dave Platt wrote:
> 
> [...]
> 
>> Once again, I'd suggest investing in a NanoVNA if you don't
>> already have one.  They're very handy and will let you
>> tweak and test your setup without putting your radio at any
>> risk.
>> 
> 
> +1
> 
> Initially you could just borrow one from another ham. Ultimately I'd get 
> one (I did). They are particularly useful for the occasional camping 
> trip. Some day you might want to play with HF antennas and every new 
> location will be different. With a NanoVNA the tuning procedure will be 
> much faster, leaving more time for chats on the ham bands. Or to get the 
> steak started :-)
> 
> Just an example: When I built a 2m yagi from scrap metal it took me 
> around 10 trips up and down the ladder to adjust the gamma match, always 
> with a run back into the house to check the SWR meter. When I built my 
> 220MHz yagi I had a NanoVNA -> one trip up and down the ladder, done. 
> Ok, so a NanoVNA might cause weight gain ...
> 

I have one too. Get the real one (NanoVNA2 v4) and not one of the many
knockoffs. 

The real ones are sold on Tindie. 

Cheers 

Phil Hobbs 
-- 
Dr Philip C D Hobbs  Principal Consultant  ElectroOptical Innovations LLC /
Hobbs ElectroOptics  Optics, Electro-optics, Photonics, Analog Electronics