Phil

Thank you! As always, your highly valuable contributions are very much appreciated.

Stu
AB2EZ

Brent You aren't missing anything. The XDC-1 is designed to operate as specified if both of its sample output ports are terminated with (i.e. looking into) 50 ohm loads. As you described, the XDC-1 forward sample output port is looking into a 50 ohm coaxial cable that is connected to the input of th...

Brent Make sure that the line attenuator that you are using is terminated in 50 ohms (i.e. the impedance looking into the feedback port of the 8000 or the 200D), and not 25 ohms (the impedance looking into the feedback port of the 8000 or the 200D ... in combination with an extraneous, parallel 50 o...

Hi

Please provide a reference to this announcement

Stu
AB2EZ

Scott The method you described for adjusting the output power... while beneficial in utilizing the full range of the D/A converter... will not have any effect on the issue of reduced RF amplifier efficiency at reduced RF output power levels. With a fixed RF load impedance, the amplifier's drain volt...

Solid state linear amplifiers (such as the amplifiers in the RF chain of an ANAN-X transceiver or a solid state external linear amplifier) have RF output circuits that provide a fixed (designed in) RF load impedance to the output transistors*. *In contrast to traditional tube amplifiers that incorpo...