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Re: LF: Wilkinson combiners

To: <[email protected]>
Subject: Re: LF: Wilkinson combiners
From: "Graham" <[email protected]>
Date: Mon, 10 Apr 2017 18:58:57 +0100
Importance: Normal
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Chris , Push the  boat out ...

Make  qty x 1  [3 way]  , or  qty x  3   [2-way]

73-G,)

--------------------------------------------------
From: "Chris Wilson" <[email protected]>
Sent: Monday, April 10, 2017 11:47 AM
To: "Markus Vester" <[email protected]>
Subject: Re: LF: Wilkinson combiners

Hello Clemens, Markus, Alan, Graham and all who replied re my combiner questions,

Some  great  and  patiently  presented  info  here, thanks a bunch for
explaining  it  so  well  and in such detail. I now have a much better
grasp  of how the wide and narrow band ones work and why a narrow band
combiner  might work best with pre filtered outputs sent to its input.
I  will  build  the W1VD design as I already have ferrites to do this,
before  buying  hard  to get (in the UK) and costly big iron cores for
building  a second W1VD LPF bank. If the W1VD combiner is not suitable
I  may  well buy 3 more iron cores and build a second LPF. I will also
try  some low inductance resistors instead of the wire wounds, and look
at  the wire wounds with my AIM analyzer. Thanks agin everyone. Off to
mow the lawn or I won't get a lift to and from the pub tonight ;)


Hi Chris,

either method should work: two separate T-type lowpass filters
after each PA will reflect the harmonics before they reach the
narrowband combiner. Or build Jay's broadband combiner, which will
pass on the harmonics to the T-lowpass instead of shunting them to ground.

Best 73,
Markus (DF6NM)



--
Best regards,
Chris                            mailto:[email protected]



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