Luis,
A cheaper diplexer would suffice. That looks like it has very strong out of band rejection, but for a simple desense problem. you don't need anything too fancy.
You would put the diplexer between the 70cm antenna and preamp, so there is no need to pass DC through the diplexer.
See here:
http://ww2.amsat.org/?page_id=2136
73,
Paul, N8HM
On Tue, Jan 5, 2016 at 2:53 PM, EC4TR Luis ec4tr.luis@gmail.com wrote:
Hi all One guy, is selling this filter, http://www.dci.ca/?Section=Products&SubSection=Amateur I am thinking in the possibility of using it for desensing problem with FO-29. I`m pretty sure it would work fine, but the question is, would it pass dc power for feeding the preamp? Somebody knows it? I asked them via email, but not answer. 73 Luis EC4TR _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb