Trbo duty time?

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efc
Posts: 156
Joined: Thu Mar 16, 2006 8:42 pm
What radios do you own?: cdm 1250

Trbo duty time?

Post by efc »

Hi,

Cant seem to get a straight answer from Motorola about this one.
It is my understanding that an XPR 8300 is not 100 per. duty cycle, just 80
True?

Thanks
John
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wavetar
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Re: Trbo duty time?

Post by wavetar »

The marketing literature states 100% duty cycle at full power. Real life experience says much less. Anyone outside of Motorola marketing is probably stating 80% to be on the safe side. If you lower it from 50-watts to about 35, then 100% duty is realistic.
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com501
Posts: 1088
Joined: Fri Nov 02, 2001 4:00 pm
What radios do you own?: Over 50 - All Motorola

Re: Trbo duty time?

Post by com501 »

Since portables and mobiles only have a 50% duty cycle even if keyed continuously, (in digital mode) then full rated power is reasonable for a 100% keydown. If running analog, I would assume standard duty cycles like a CDM or similar mobile, HT or similar portable.

Repeaters are rated full output at 100% duty cycle, althouth we always derate them a few watts. Haven't had any failures so far, except for a group of radios being used in a combined system that the original vendor never tuned correctly.
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