[Elecraft] AT1 question

[Harlan]

Ok all...... The 50 ohm load must be it. I was using a Fluke 5520A calibrator and a Fluke 8508A Reference Multimeter to read the output WITHOUT a load.... 

Been a long day.
Thanks to all....
Harlan
NC3C

Sent from my Verizon Wireless 4G LTE DROID

Ralf Wilhelm <ralf at super-deutschland.net> wrote:

>Harlan,
>
>You should get 0.1 volts when you terminate your attentuator with 50 Ohms - are you probably using a high z voltmeter? The output of the attentuator can be seen as a 0.2 V voltage source with 50 ohms internal resistance - if you terminate it with a 50 ohms load, the 0.2 volts are divided between the internal resistance and the load, but if you use a high z termination instead, the voltage drop on across the high z is 0.2 volts...
>
>Greetings
>
>Ralf, DL6OAP