Antenna Resonance Measurement using an Oscilloscope and signal generator, MVI_4378

[Neslakim]

The images to the site you have linked up does not work :(

Do you have another site? Or know when they will work again?

[uploadJ]

@Neslakim

I just clicked the link and it worked for me - one might try again later ... I don't think the archive dot org (the 'Wayback Machine' website) site (where the files are) has very robust servers, I have had errors and delays from them on occasion in the in the past ...

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[bearing01]

cool video. /John

[RussellTuan]

how those resisters were connected inside the magic box?

[uploadJ]

RussellTuan - I have added a link in Description above for that information.

Basically, the three 50 Ohm resistors form a 'bridge' circuit and the two 1K resistors provide isolation so the O-scope does not load the bridge.

Also note the coax cables to the O-scope must be terminated in 50 Ohms (or turn on 50 Term function in menu of scope) and the coax lines *should* be of equal length to CH 1 and CH 2 of O-scope (to make phase on O-scope read properly).

Regards, uploadJ

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[RussellTuan]

@uploadJ  great ,thanks a lot!!

Regards, Russell Tuan