Communication Concepts FM-1KW Broadcast Application Note - Manual (Page 9)

MRFE6VP61K25H MRFE6VP61K25HS FM Broadcast
9
RF Reference Design Data
Freescale Semiconductor
APPENDIX A
Tuning Tips
• Increasing C4 increases efficiency at the low end of the
band (87.5 MHz), but there is a trade--off in power at the
high end of the band.
• Increasing the length of Coax3 increases efficiency at the
low end of the band (87.5 MHz), but there is a trade off in
efficiency and power at the high end of the band.
• Make sure all the coax are measured tip to tip.
• Increasing C5 increases the power, but lowers efficiency.