Spend enough time around serious Amateur Radio operators and one pattern becomes obvious. The conversations eventually move away from radios themselves and toward everything connected to them.

I’ll never forget the weekend I spent tearing my station apart, thinking my new HF transceiver was the culprit behind a mysterious noise problem. I had installed it a few weeks earlier, and everything seemed fine at first. Then, during a late-evening net on 40 metres, there it was—a faint, buzzing hum creeping into my receive audio. It was subtle but maddening. I swapped coax, retightened connectors, even fiddled with grounding schemes, but nothing worked. Then I remembered a conversation with a fellow club member about Diplexer use in multi-band setups. Honestly, I almost dismissed it as overkill—but that lesson cost me an entire weekend.

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Diplexer VHF/UHF/SAT Nanosat ESP22A1

O Diplexer VHF/UHF/SAT Nanosat, modelo ESP22A1, pode ser utilizado de duas formas:

Para misturar o sinal de VHF/UHF ao de satélite em um mesmo cabo coaxial.

Para separar o sinal de VHF/UHF e o de satélite que vem em um mesmo cabo coaxial.

O sinal de TV terrestre em VHF e UHF utiliza as frequências de 54 MHz a 806 MHz (canal 2 do VHF ao canal 69 do UHF). TVs por satélite utilizam frequências de…