[AMRadio] My Current EF Johnson Messenger 2 Audio


Bow kd5kzn at sbcglobal.net
Thu May 31 03:35:46 EDT 2007


 
Thanks to Ed Sieb's outstanding suggestions, my Blackface Johnson Messenger
2 now sounds damn good.

Mark was interested in the mods, so I did a little recording and Analysis..
The Before and After, if you will..
The Audio:

Bone Stock:
http://www.riley-music.com/BowsStuff/BlackFace/StkBlackfaceAudio.mp3

Modded:
http://www.riley-music.com/BowsStuff/BlackFace/VUDUMSNGR2.mp3

The Audio Analysis:
http://www.riley-music.com/BowsStuff/BlackFace/ModdedBF.gif

Red line is the bone stock Radio
Blue line is 2 caps swapped (C24, C35)
Green line is 3 caps swapped (C24, C31, C35)

The Mods:

C24, C31, C35
Stock Values: .005 uF
Modification Values: 0.22 uF

Jumper R48 to increase power output to 8-10 watts carrier

Can you dig it? 


Bow

W5EFR


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