[Amps] AL-1200 pi input network. is manual right for correct LC values

[knormoyle at surfnetusa.com]

thanks everyone for all that. 
I notice in the user manual, it does show extended freq ranges to include all the WARC bands except 24.5 
Mhz.

160M:  1.8-2.0Mhz
80M: 3.3-4.4Mhz
40M: 6.3-8.3Mhz
20M: 9.5-15.5Mhz
15M: 15.5-21.5Mhz
10M: 24 - 29Mhz

So yeah, 10M was "centered" at 26Mhz before my change. So maybe that was what they were attempting to do.


elsewhere they claim for the input network:

Circuit type: Pi-network, slug tuned coils
maximum VSWR at resonance: 1.2:1 
minimum 2:1 VSWR bandwidth: 20%

I assume that's 20% of the center frequency. So that would be plus or minus 10% for 2:1 SWR
so 10M high would have been 26+2.6 = 28.6Mhz

So the WARC issue is making it make more sense. I guess the manual is just not correct about the components.

The efficiency seemed low at 15 and 10. I was hoping tuning up the input networks would help that.
(haven't fully checked result until I put it all back together)

-kevin
ad6z