[Elecraft] Unterminated PR6, was RE: PR6 Clarification

[Jim Brown]

On 4/16/2013 11:01 AM, Cady, Fred wrote:
> This leaves the PR6 input and output floating

We have a problem of symantics. All uses I've seen of "floating" with 
respect to electronic circuits mean that the circuit has no "ground 
reference."

> (unlike when DIGOUT1 is high when the input and output of the PR6 are terminated in 50 ohms).

The word most commonly used to describe a circuit with no connected load 
is "unterminated."

> So my question: Is that a problem for the PR6?

I see no reason why it should be a problem unless it's badly designed, 
which is unlikely -- it's essentially a fairly low gain preamp with low 
input and output impedances.  Preamps of this sort are usually designed 
for use at the top of a tower, where they are relay-switched between TX 
and RX.

73, Jim K9YC