Batboard

I have several gm300, maxtrac and radius radios..... they all sound very tinney....no base in the xmit audio Is there any mod or special type of mike I can use to get some fidelity in the xmit audio??? I prefer a DTMF mike. Thank you in advaqnce for the reply.

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The modification mentioned on Batlabs might do the trick for you:

http://www.batlabs.com/maxaudio.html