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The 150 mA IC only controls the carrier level. The mike gain controls the peak modulated power level, along with the random amount it gets you at this carrier level. A radio with a high ratio of peak to carrier built into it could get you 150 Watt peaks from a radio that only lets you have 130 on SSB. At the other extreme, a radio may only show 70 or 80 Watts PEP on AM with 150 mA cathode current on the finals. And if the resistor that goes from the driver tube's screen grid pin to ground has burned open, you could see more. But only until something gives from the excess stresses.

There is more than one way to make the FT101 show more power than is safe for it in AM mode, since the only "limiter" is your willingness to hold it down to a safe level.

73

[QUOTE="nomadradio, post: 778199, member: 22"] The 150 mA IC only controls the carrier level. The mike gain controls the peak modulated power level, along with the random amount it gets you at this carrier level. A radio with a high ratio of peak to carrier built into it could get you 150 Watt peaks from a radio that only lets you have 130 on SSB. At the other extreme, a radio may only show 70 or 80 Watts PEP on AM with 150 mA cathode current on the finals. And if the resistor that goes from the driver tube's screen grid pin to ground has burned open, you could see more. But only until something gives from the excess stresses. There is more than one way to make the FT101 show more power than is safe for it in AM mode, since the only "limiter" is your willingness to hold it down to a safe level. 73 [/QUOTE]

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