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On 432MHz I use two pallets with each 2 pcs. LDMOS type SD56120M from ST.
Each pallet provides app. 240W and has a gain on 13 - 16 db, feeding with 20 - 25W I have 450 - 500W out.

Building this PA was a challenge to me, as I didn’t have knowledge about how to connect 4 port Wilkinson combiners right. The result was two burns LDMOS, expensive knowledge but now I know more about this.