>
>Just installed a new AL-1200 yesterday.
>
>The blower is kinda loud, like sitting in the back row of a DC-9 with full
>reverse thrusters.
>
>I notice the blower has wiring options for 4 speeds (it comes wired for
>3rd gear).
>
>Has anyone rewired for lower speeds and used the amp for contesting?
>
>I'm thinking about finding a 4-pos rotary switch and mounting it (drill a
>hole in my new amp - GULP!) on the rear panel so I can switch blower
>speeds depending on usage. Anyone done that?
>...
As I understand it, the AL-1200 needs:
an addional cooling fan directed at the bandswitch.
additional HV bypass (1000pF @ 1.8MHz is not enough)
a glitch R.
remove the "neutralization" circuit. Over 35 years ago, Heathkit and
Gonset unsuccessfully tried "neutralization" of a g-g amplifier.
cheers, Hans
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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