Posted by Wayne Parham on December 01, 2002 at 14:36:16

In Reply to: as measured my quasi-4 Pi hf z posted by Sam P. on December 01, 2002 at 12:18:28:

Some of 'em aren't quite as high as 20 ohms. The 8dB and 10dB versions, for example, present a slightly lower impedance than the 12dB and 14dB versions. And really, even the 14dB unit only presents about 15-17 ohms at its maximum, depending on the driver used. There's a smaller shunt value and higher series value in the 8dB and 10dB assemblies, so their load is even a little closer to the 8-10 ohm range. But I still like to point out that impedance is slightly higher than some might expect due to the compensation circuit.

I can't recall which cable assemblies you're running, or if yours are different. But the load impedance is pretty easy to find, it's a simple circuit.