The best place to put a pre-amplifier is with out a doubt as closest to the antenna as possible. If possible, directly mounted at the feeder (dipole) and using phantom-type powering of the amplifier. The RF/DC splitter comes inside the shack just before your receiver. Keep the connections as short as possible @ RF IN and RF OUT and keep them in 50 Ohms impedance starting at the leads from the IC. Mount it in a shielded casing.
Related Links
More circuit about RF
More circuit RF Amplifier
60W RF Linear amplifier
40 Watt Amplifier For FM Broadcast by MRF171A
RF Power Amplifier 1.3W to 6W by 2SC1970
25W RF amplifier by BLY88
RF Preamplifier by 2N2219a , 2N4427 , 2N3553
Read More Source:
http://users.belgacom.net/hamradio/schemas/
preamp_HF_VHF_UHF_SHF_wideband_MAR6.htm
Thank you.
This entry was posted on Thursday, February 14th, 2008 at 8:53 am and is filed under RF-Radio Frequency.
