Many rigs, like the FT 990 have a duty cycle rating. From the 990 manual:
"Duty cyde: 100%@100watts, 50%@100 watts (FM & RTfY,3-minute tx) "
I have not located such a spec in the FLEX literature. --73, Mike WV2ZOW
On Fri, Jun 3, 2016 at 3:25 PM, Jurgen Geldhof <list@on5mf.be> wrote:
> I have run my FT990 at full power in contests for the last 20 years.
>
> The probe I clipped to the heatsink shows a higher temp when leaving the
> rig in RX for a while than when I am running in a contest.
>
>
> Op 3/06/2016 om 19:16 schreef john@kk9a.com:
>
> For contest QSO's I have run a Yaesu FT1000MP and an Elecraft K3S at full
>> power for many hours straight with no noticeable heating or other issues.
>>
>> John KK9A-W4AAA
>>
>> To: Ktfrog007@aol.com
>> Subject: Re: [RTTY] Flex 6300 in low power RTTY contests; Maestro
>> From: Stanley Zawrotny <k4sbz.stan@gmail.com>
>> Date: Thu, 2 Jun 2016 15:46:36 -0400
>> List-post: <rtty@contesting.com">mailto:rtty@contesting.com>
>> No xcvr should be run at more than 50% power for RTTY.
>>
>> Stan, K4SBZ
>>
>> "Real radio bounces off the sky."
>>
>> _______________________________________________
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>> RTTY@contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty
>>
>>
>>
> --
>
> 73
>
>
> Jurgen Geldhof
> ON5MF / OQ6A
>
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>
> www.on5mf.be <http://www.on5mf.be> www.geldhofhout.be <
> http://www.geldhofhout.be>
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