[AK-VHF] Diplexer Circuit

[Brandon Clark]

Hello group,

Does anyone know of a good circuit for making a compact, low power diplexer (duplexer) for the 2 M and 70 cm bands?

I am designing a beam antenna composed of two yagis on the same boom. I want to utilize a diplexer so that I can have a single feed line back to the radio.

The trick is that this is a backpack-portable design, so I don't want to use an off-the-shelf model. All the commercial ones I've found use UHF or type N connectors and large housings. I want something much lighter and more compact which I can build into something like a small aluminum Hammond box.
73,

Brandon Clark, KL7BSC
https://brandonclarklabs.com/

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