[1000mp] RTTY operation question

[Phil Duff & Ann Duff]

Tod -MN wrote:
>> Last evening at the MWA Autumn meeting there were presentations 
>> outlining
>> how to get on the air for RTTY contesting. One of the caveats 
>> mentioned was
>> that RTTY has a nearly 100% duty cycle during contest operation. I am 
>> not
>> near my FT1000MP operator's manual and even if I could look up what is
>> written, I would like to know if anyone has used the out-of-the-box 
>> FT1000MP
>> at full output [nominally 100w] for at least an hour in heavy RTTY 
>> contest
>> operation without thermal overload. 
>
My 1000MP manual has a "CAUTION!!" notice on page 54 which states:

"The FT-1000MP cooling system is designed to handle continuous duty 
transmission at 100 watts output.  However, for RTTY, we recommend 
limiting your transmissions to 3 minutes or less, with at least 3 
minutes receive in between transmissions (or use an external linear 
amplifier). Place your hand on the transceiver occasionally to ensure 
that it's not getting too hot and try to keep power output at 50 watts 
or less.

You can limit the maximum RF power output to 50 watts via programming, 
by recalling menu selection 4-0 and choosing either full or reduced 
power output".

73 Phil NA4M



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Phil Duff NA4M & Ann Duff
Georgetown, Texas
http://priceless.apduff.com