new type of HOD system

[Hydro-Cell]

hi guys
im new to the forum, i am working on a new HOD unit and have come up against a little snag. the project requires an amplifier capable of amplifying 42.8khz as cleanly as possible, the snag is that it needs to have 50ohm output i may be able to work with 8 ohm though. the input stage being a signal generator producing 42.854 khz or close to it. the output power needs to be about 100 -150 watts. the supply power needs to be either 12 or 24v dc
not fussed if the signal has harmonics passed through as there will be a bandpass filter after the amp, this filter has a 20khz bandwidth with centre frequency of 43khz

i have asked this question on a few electronics forums but as soon as i tell them what frequency i want to amplify they get on the defensive and say im wasting my time and refuse to help me.

if there is anyone out there that can design or already has a similar circuit then please reply

[pese]

use an 8 to 16 ohm resistor from ampli output to ground. (10-20 watts )

(an 24volt bulb 10 watt is an cheaper way to replace the- harder to find- resitstor).
now take an 50 ohm resistor (1-2 watts) and connect the output from ampli to 50 ohm input from your device.

Pese

[pese]

use an 8 to 16 ohm resistor from ampli output to ground. (10-20 watts )

(an 24volt bulb 10 watt is an cheaper way to replace the- harder to find- resistor).
now take an 50 ohm resistor (1-2 watts) and connect the output from ampli to 50 ohm input from your device.

Pese