I just measured a 3 foot extension and it was less than 1ohm. I can't fathom a car radio working with 150,000 ohms so I did a little research. On the Electronics Point website it explains that with long car antenna cable lengths the capacitance increases, so they add a capacitor to bring it back to spec. I assume that is why it is there, not to block anything.
And the capacitor/resistor debate continues . . .
I tried testing the small Cyanide pill looking piece but it appears to be broken internally.
As you mentioned, I checked the full cable run less the ??? piece pictured, 3 ohms. What I don’t know is if the first run of cable from the rear mount has one of these installed or not.
I have a feeling I’ll be visiting the salvage yard in an attempt to find a suitable replacement, or at least one that can be tested to determine with certainty what it is. And of course the issue may be that this is unique to extension cables only????
