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What model number is it?

How much time transmitting versus how much time NOT transmitting into it. Most dry dummy loads are rated for full power only for a very short time period. My MFJ-264 load is rated at 1.5 Kw. yeah for about 5 or 10 seconds maybe if you let it cool off long enough between keydowns. It only has a 50 watt resistor in it. It will handle 100 watts for many minutes however as long as it has several minutes to cool off. My 600 watt Bird Termaline 8401 is about 25 times heavier and will take 600 watts continuously 24/7. Beware of dummy load ratings.

[QUOTE="Captain Kilowatt, post: 594749, member: 39"] What model number is it? How much time transmitting versus how much time NOT transmitting into it. Most dry dummy loads are rated for full power only for a very short time period. My MFJ-264 load is rated at 1.5 Kw. :ROFLMAO: yeah for about 5 or 10 seconds maybe if you let it cool off long enough between keydowns. It only has a 50 watt resistor in it. It will handle 100 watts for many minutes however as long as it has several minutes to cool off. My 600 watt Bird Termaline 8401 is about 25 times heavier and will take 600 watts continuously 24/7. Beware of dummy load ratings. [/QUOTE]

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