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]
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
|
