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You can Play with the Value of Cap untill you get the tone that you like, I think I wound up with 120 pf in mine...but I like to tinker.
Right now I an running a Cherokee CMP-400-PRB Mic into a Astatic MobileMax and I get plenty of good Audio reports on both AM and SSB ( I just have to remember to roll off the slapback on SSB :tongue: or get called several colorful names) This radio is being used as a base set-up right now....There are a few mics that will sound good on this radio, the RK 56 works well in a noisy mobile environment, and I have even used a Silver Eagle D-104 on the base.
Just monitor your audio and adjust the gain so it sounds good without picking up background noise.
My 2600 has a Chipswitch in it, and I also did Rogerbird`s AMC Mod as outlined below, that allows a little more headroom, but still lets the AMC to do its job ( click here>) micgain2
I Do NOT recommend cutting the AMC out when the above mod will allow plenty of audio with a power mic.
I like to try different mics and monitor my audio on another receiver to adjust the levels and then get on the air....they are great little radios.

73
Jeff

<blockquote data-quote="AudioShockwav" data-source="post: 201059" data-attributes="member: 6">You can Play with the Value of Cap untill you get the tone that you like, I think I wound up with 120 pf in mine...but I like to tinker.Right now I an running a Cherokee CMP-400-PRB Mic into a Astatic MobileMax and I get plenty of good Audio reports on both AM and SSB ( I just have to remember to roll off the slapback on SSB :tongue: or get called several colorful names) This radio is being used as a base set-up right now....There are a few mics that will sound good on this radio, the RK 56 works well in a noisy mobile environment, and I have even used a Silver Eagle D-104 on the base.Just monitor your audio and adjust the gain so it sounds good without picking up background noise.My 2600 has a Chipswitch in it, and I also did Rogerbird`s AMC Mod as outlined below, that allows a little more headroom, but still lets the AMC to do its job ( click here&gt;) <a href="http://www.cbtricks.com/rogerbird/2510/micgain2.htm" target="_blank">micgain2</a>I Do NOT recommend cutting the AMC out when the above mod will allow plenty of audio with a power mic.I like to try different mics and monitor my audio on another receiver to adjust the levels and then get on the air....they are great little radios.&nbsp;73Jeff</blockquote>

[QUOTE="AudioShockwav, post: 201059, member: 6"] You can Play with the Value of Cap untill you get the tone that you like, I think I wound up with 120 pf in mine...but I like to tinker. Right now I an running a Cherokee CMP-400-PRB Mic into a Astatic MobileMax and I get plenty of good Audio reports on both AM and SSB ( I just have to remember to roll off the slapback on SSB :tongue: or get called several colorful names) This radio is being used as a base set-up right now....There are a few mics that will sound good on this radio, the RK 56 works well in a noisy mobile environment, and I have even used a Silver Eagle D-104 on the base. Just monitor your audio and adjust the gain so it sounds good without picking up background noise. My 2600 has a Chipswitch in it, and I also did Rogerbird`s AMC Mod as outlined below, that allows a little more headroom, but still lets the AMC to do its job ( click here>) [URL="http://www.cbtricks.com/rogerbird/2510/micgain2.htm"]micgain2[/URL] I Do NOT recommend cutting the AMC out when the above mod will allow plenty of audio with a power mic. I like to try different mics and monitor my audio on another receiver to adjust the levels and then get on the air....they are great little radios. 73 Jeff [/QUOTE]

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