[1000mp] preference question

[Joe Subich, K4IK]

Jim Smith writes: 

> RTTY - High duty cycle of RTTY requires MkV (and, I presume, 
> the MP and the Field) to be throttled back to half power.  1/2 
> power in a 200W rig is 100W; in a 100W rig it's 50W.  3 dB 
> advantage to the MkV.
> In some contests the LP Max power is 150W.  1.8 dB advantage 
> over 100W rigs.  It's pretty easy to show that, statistically, 
> 1.8 dB can make a difference.
> 
> Ditto for LP dxing.  The MkV has 3 dB advantage over 100W rigs.

Not to mention at least 4 dB better IMD specs for the Mark V 
than the Field/MP when the rigs are run at rated power output. 
When the Field/MP is cranked up to 150 watts out, it becomes a 
real trash generator (IMD of only -30 dB vs. better than -40 dB 
for the MK V at 200 Watts output in class AB). 

Put another way, the manufacturer's specs for worst case IMD for 
the BLF-147 in the MK V is < -30 dB.  The manufacturer's specs 
for IMD with the 2SC2879 in the Field is <-24 dB.   

73, 

   ... Joe, K4IK