Just to wrap up this question for the benefit of anyone else who is interested 
or may search for this later…

Jack’s response prompted me to go back and take a second look at the schematics 
for the couplers. Somehow I missed this the first time through, but it would 
appear that the coupler will provide a short to ground for a DC bias voltage by 
way of the secondary winding in T1.

So I’m going to take “no” for an answer here. ;-)  I don’t think the HF 
couplers will pass a DC bias voltage on through like I had hoped.

73,
David - N5DCH



>> 
>> 
>>> On Jun 8, 2021, at 6:25 PM, Jack Brindle <jackbrin...@me.com> wrote:
>>> 
>>> I believe the answer is yes. The schematics for the W2 and couplers are in 
>>> the manual.
>>> 
>>> 73,
>>> Jack, W6FB
>>> 
>>> 
>>>> On Jun 8, 2021, at 5:00 PM, David Herring <david.n5...@gmail.com> wrote:
>>>> 
>>>> Can anyone say if the directional couplers for the W2 will pass a DC bias 
>>>> voltage along the coax? 
>>>> 
>>>> 73,
>>>> David - N5DCH
>>>> 
>>>> 
>>>> 
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> 

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