n6ca has a webpage with simple VHF preamps using U310.

On Wed, 30 Mar 2005 02:10:35 GMT, "Dan/W4NTI"
wrote:

Anyone have any links to a simple, such as a JFET, or MOSFET six meter
pre-amp circuit? I have a TS-600 that needs some rx help. I know back
about 25 years I had a real simple JFET for a pre-amp on a Yaesu FT-620B.

Dan/W4NTI