7ANT Controller

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!! Preamplifier BIAS * With this trimmer you can set right bias for the transistor. * Bias vs IP3 and gain parameters are there: [OK2ZAW's blog spot|https://ok2zaw.blogspot.com/2015/09/rx-ant-switching-b-ox-part-2-preamp-ip3.html] * recomended bias is 60 to 85 mA for 13 V+ * [bigger picture|https://remoteqth.com/img/ZAW-WIKI/k9-bidir-controller/internal-pcb/deska_red_2.png] [https://remoteqth.com/img/ZAW-WIKI/k9-bidir-controller/internal-pcb/deska_red_2-850.png|noborder]
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