Last night I used the nanoVNA to check a newly constructed dummy load that consists of 20 x 2W parallel resistors (film) in a tin.
Need to sort out a calibration for the revised connection (termination on dummy load is not sma) and also once reference plots obtained (using nanovna-saver) idea is to then fill tin with oil and re analyse to compare useful operating range.
Currently the swr is ok (less than 1:1.5) up to about 200 Mhz or so then climbs to about 4 at 430 Mhz so ok for 2M but not 70 cm.
LOTS to learn and still debating which firmware will be best for my needs without limiting options...
Have made comparison using YouKits FG 01 analyser (see a post made week or so ago) of broad band aerial and there are many projects I have in mind that the nanovna will be used e.g. hand held sat aerial, filter(s) as well as 'experimenting'!
Fingers crossed than Ohan Smit continues his excellent posting on his blog re a nanonvna-saver 'cook book'.... (no pressure Ohan, honestly <smile>).
Thank you to all contributors to this forum, your efforts are sincerely appreciated.
73 Nigel ZS6RN ex G8DEV
