[ICOM] 60M on the 706MKIIg

K8CM k8cm at arrl.net
Sun Mar 25 13:29:03 EST 2007


I don't wish to take away from Bruce's note of 
caution  ...  but  ...  I'm wondering, does anyone know for sure?  At 
what point does the '706 switch one filter to the other and what are 
the upper and lower half-power points for each filter?

73  <>  Carl

At 09:08 AM 3/24/2007, you wrote:
>Be very careful with this 60 meter mod. The problem is in the PA 
>filter section. Most
>Icom radios switch the PA filter to the 7MHz band at 5 MHz. Trying 
>to run 100 watts
>thru that filter section could overheat one or more of the inductors 
>and burn them plus
>the PCB. Power should be limited to 50 watts.
>This was the case for the 756 series radios. I had to replace a 
>filter coil in the 7MHz
>PA filter section, it was totally burned up and a test latter proved 
>that. The coil temp
>was so hot I could have burned my finger on it. So use 60 meters at 
>reduced power
>and you should be ok.
>73's
>Bruce W7BCW





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