CommScope
On 9/26/2020 6:53 AM, Artek Manuals wrote:
I recently purchased a nice VNA ( Array Solutions AIM4300 ...good news /bad
news ..contact me off list) . Like a kid with a new chemistry set at Xmas I
set about measuring everything in site with my new "toy". Much to my naive
surprise I found that much of the "50 ohm" coax I had (DX engineering RG213
and RG8X), actually measured 51.8 ohms . Although I did have a 75 ft piece of
brand-X Hamfest special that measured 49.7 ohms!
Now I know that in practice there is not enough difference between 50 ohms and
52 ohms in actual use especially at 50MHz and below. Occasionally though it
matters ! Besides the truth in advertising thing ( 2x4 lumber has always
galled me) Does anyone know who makes legal limit 50 ohm coax that is
actually 50 ohms and not 52 ohms?
Dave
NR1DX
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