Mike,
I'd go ahead and have a great time.  Lived through the tube 
transmitter era and I think you are so well within spec. that you 
should be just fine.
Enjoy.
Pat, K9JAUAt 09:06 AM 9/2/2014, you wrote:
>Hi all:=20
>
>I'm mostly an SSB op, currently running an Ameritron 811H amp, driving =
>it with a typical 45/50W of drive.=20
>Should I really be concerned about hurting the 102's tubes with an =
>extended period of operating? I'm thinking of the CQWW SSB contest in =
>October.=20
>I played in the ARRL's International DX Phone contest back in march with =
>no ill affects to my 102 but some of my friends have been recommending =
>that I shouldn't do that again and I dodged a bullet.=20
>Considering that a good set of 6146s can dissipate a combined 100W, I =
>don't think I'm coming even remotely close to that at 45/50W in tune/CW =
>mode, with an SWR of 1.0/1 and 0 reflected power based on my TW-1's =
>announcements. .=20
>After getting that 45/50W in tune mode, I switch to SSB and control the =
>amp's output with the mic gain and ALC control. In SSB, I'm just peaking =
>over 600W. The amp is rated at 600W CW and 800W SSB.=20
>I'm also thinking of when this transceiver was brand new in the early =
>80s. Wouldn't owners spend hours operating in all capable modes at the =
>time? Running various amps, not exactly resonant antennas and the like?=20=
>
>I do have a backup rig but how my 102 performed in the last contest, =
>makes me want to use her again. The filtering was absolutely fantastic =
>and I got outstanding audio complements, opping with a Heil Pro Micro =
>Duel with the HC-6 element and 500/600W amp.=20
>With a solid state rig, they employ a roll back for SWR protection but =
>when operating for long hours can they handle the beating that tubes =
>can? Let's say if the rollback and cooling fails, how much beating would =
>they take?=20
>
>
>73:=20
>Mike VO1AX=20