well I thought this thing could be battery operated, at 300watt forget that..

here is the code I would like to use:
Also, one freqnecy the output looks good, but more then one the frequency varies from 11k to 31khz and very unstable.

@ DEVICE HS_OSC
TRISB = 0

loop: FREQOUT PORTB.1,10000,20000
' Pause 100 ' Delay for .5 seconds

FREQOUT PORTB.1,10000,26000 ' Turn on PORTB for 1- sec at 26Khz
Pause 100 ' Delay for .5 seconds

FREQOUT PORTB.1,10000,21000 ' Turn on PORTB for 1- sec at 21Khz
Pause 100 ' Delay for .5 seconds

FREQOUT PORTB.1,10000,27000
Pause 100

FREQOUT PORTB.1,10000,22000
Pause 100

FREQOUT PORTB.1,10000,28000
Pause 100

FREQOUT PORTB.1,10000,23000
Pause 100

FREQOUT PORTB.1,10000,29000
Pause 100

Goto loop ' Go back to loop