Re: Output Impedance?

Nick Kennedy
 

I get a little confused as to which designation refers to which schematic.  Does the version you are looking at have a transistor amplifier or a MMIC?  Or does it use a DDS-60?  

Following the amplifier, what does the attenuator look like?

I think they were all designed to be close to 50 ohms.

73,

Nick, WA5BDU

On Fri, Aug 26, 2016 at 11:26 PM, mirasad314@... [PHSNA] <PHSNA@...> wrote:
 

Looking at the schematic of PHSNA II it seems that the output impedance is close to 73 ohms rather than 50 Ohms.

Am I right and why so?


73


Azzy


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