I remember that with the Drake C-Line, some ops would short the T4XC
ALC line, which would increase the power output to 175W. Most vacuum
tube transmitters I am familiar with did not have a power adjustment.
Even the mighty solid state Collins KWM-380 lacks a power adjustment.
73,
Jim w8zr
Sent from my iPhone
> USING ALC to control drive level for a power amplifier is a CAUSE of splatter
> and clicks. ALC should NEVER be used to set drive level. The ONLY good reason
> for using ALC between rig and power amp is to protect solid state output
> stages from damage due to a fault in the antenna system.
>
>> Radios with slow-acting ALC are also famous for causing IMD blasts and key
>> clicks without even needing an amp, and there are many. But the most usual
>> way of producing lousy signals is by intentionally defeating the ALC of the
>> transceivers. In my environment they call it "liberating" the radio, because
>> the poor radio was tied down to just 100W by the evil manufacturer, and by
>> defeating that "brake" it can produce 150W or so, when turning the mic gain
>> to full and then screaming into the mike, right?
>
> I can't imagine what you are talking about. Since the days of separate TX and
> RX, I don't remember ever seeing a rig that didn't allow adjustment of output
> power.
>>
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