3 ms·

Hi, I apologize for being the RF pedantic, but did you mean "2.5 dB"? dB is a ratio; "dBm" is just one way to declare a given power, in this case because it is

Hi, I apologize for being the RF pedantic, but did you mean "2.5 dB"? dB is a ratio; "dBm" is just one way to declare a given power, in this case because it is referenced to 1 millwatt (the 'm' in dBm). Ergo, 0 dBm = 1 milliwatt; 30 dBm = 1 Watt, etc. I hope you were very careful with your fixturing going up to 20 GHz; poor fixturing can be masking the cable's true performance.

tverbeure 3y ago
Yeah, I meant dB. And, no, I wasn't very careful at all. This was done with an uncalibrated 30+ year old sweep generator with questionable attenuator, a 40 year old power meter that's only rated up to 10GHz, AliExpress connector adapters, and an assortment of coax cables that I took from my stack. At 20GHz, it shows a trend at best. (I wrote as much at the bottom of the blog post, but I forgive you for not reading that far!)