W2

[David Herring]

Can anyone say if the directional couplers for the W2 will pass a DC bias voltage along the coax?

73,
David - N5DCH



______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Elecraft mailing list]

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 <[hidden email]> wrote:
>
> Can anyone say if the directional couplers for the W2 will pass a DC bias voltage along the coax?
>
> 73,
> David - N5DCH
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[David Herring]

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 <[hidden email]> 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 <[hidden email]> wrote:
>>>>
>>>> Can anyone say if the directional couplers for the W2 will pass a DC bias voltage along the coax?
>>>>
>>>> 73,
>>>> David - N5DCH
>>>>
>>>>
>>>>
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:[hidden email]
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>> Message delivered to [hidden email]
>>>
>>
>

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]