K9AY feeder with BPF

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!Preamp GAIN set * Total gain of '''PREAMP is around 18 dB.''' * With the trimmer R6 you can set gain as you need. * There is '''variable ATT. ''' * Gain can be set from 0dB to about 18dB. [https://remoteqth.com/img/ZAW-WIKI/k9ay-bpf/feeder-pcb_4.png|noborder]
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