Yaesu FT-817 extended transmit mod
power output/sensitivity:

No transmit up to 1.8 MHz
1.8 - 32.0 MHz   2.5 watts
33                        .34 watts (another filter switches in here)
34    .51 watts
35     .75
35    1.0
37    1.4
38    1.9
39
...     2.3 watts
51
52    2.4
54    2.45
56    2.5
No transmit from 56 to 140 MHz
140    1.6 watts
141    2.0
142
...       2.4 watts
146
147    2.3
148    2.3
149    2.2
150    2.1
151    1.7
152    1.4
153    1.1
154    0.9
No transmit / receive from 154 to 420 MHz
420    1.6   (sensitivity .12 uV)
422    1.7
424
...       1.9
450            (sensitivity .16 uV)
452    1.8     / .18
454    1.7
456    1.4     / .20
458    1.0     / .22
460    0.7     / .28
462    0.3     / .42
464    0.14   / .50
466    0.03   / .55
467    0.015 / .75
468    0.010 /1.0
469    0.005 /1.3
470    0.002 /1.4

All measurements made with a Motorola R-2008D service monitor at 13.8 VDC to the radio.

Radio was set in medium power mode for all measurements, and had original finals (now replaced,
of course!)