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the 1/4wave of 75ohm coax should transform 100ohm x=0 to 50ohm x=0,
sqroot of load impedance x 50ohm,
i can't find my scientific calculator, no roots on my phone

the 1/2wave coax would mirror the load impedance looking into the coax so 100ohm x=0 at the analyser,

im not sure what the analyzer would report for vswr with the 1/2wave of mismatched 75ohm coax, i think 2:1 with a 50ohm analyzer and no reactance in the load,

i don't doubt your measurements

<blockquote data-quote="bob85" data-source="post: 434404" data-attributes="member: 18">the 1/4wave of 75ohm coax should transform 100ohm x=0 to 50ohm x=0, sqroot of load impedance x 50ohm,i can&#039;t find my scientific calculator, no roots on my phone<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f914.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":unsure:" title="Unsure&nbsp; &nbsp; :unsure:"&nbsp; data-smilie="28"data-shortname=":unsure:" />the 1/2wave coax would mirror the load impedance looking into the coax so 100ohm x=0 at the analyser,im not sure what the analyzer would report for vswr with the 1/2wave of mismatched 75ohm coax, i think 2:1 with a 50ohm analyzer and no reactance in the load,i don&#039;t doubt your measurements<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f44d.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":thumbup1:" title="Thumbs Up&nbsp; &nbsp; :thumbup1:"&nbsp; data-smilie="27"data-shortname=":thumbup1:" /></blockquote>

[QUOTE="bob85, post: 434404, member: 18"] the 1/4wave of 75ohm coax should transform 100ohm x=0 to 50ohm x=0, sqroot of load impedance x 50ohm, i can't find my scientific calculator, no roots on my phone:unsure: the 1/2wave coax would mirror the load impedance looking into the coax so 100ohm x=0 at the analyser, im not sure what the analyzer would report for vswr with the 1/2wave of mismatched 75ohm coax, i think 2:1 with a 50ohm analyzer and no reactance in the load, i don't doubt your measurements:thumbup1: [/QUOTE]

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