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Can anybody point me towards any info on how to make a rf gain circuit and a ANL/NB circuit for the 505?
One thing else I've discovered today about my 505. I can switch it to PA with an external speaker plugged into the PA jack and still hear the receive on the channel I'm on. If I key down,the 505 goes into PA mode and I hear myself over the PA speaker. With that I can opt out of wiring a resistor across the PA and EXT Spkr terminals especially if I'm testing mic's and want to hear the difference between them but for talkback with cb operations I'll want the talkback mod.
That brings me to this question. If I run two external speakers,one to each jack,them I can have talkback for testing purposes only.

[QUOTE="Lil'Yeshua, post: 455582, member: 28438"] Can anybody point me towards any info on how to make a rf gain circuit and a ANL/NB circuit for the 505? One thing else I've discovered today about my 505. I can switch it to PA with an external speaker plugged into the PA jack and still hear the receive on the channel I'm on. If I key down,the 505 goes into PA mode and I hear myself over the PA speaker. With that I can opt out of wiring a resistor across the PA and EXT Spkr terminals especially if I'm testing mic's and want to hear the difference between them but for talkback with cb operations I'll want the talkback mod. That brings me to this question. If I run two external speakers,one to each jack,them I can have talkback for testing purposes only. [/QUOTE]

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