3SK164

[VK2XSO]

Does anybody know a source of 3SK164 FETs ?
These critters were commonly used in Yaesu radios and of course I'm looking for a replacement for such.

Part Number = 3SK164
Description = N-Channel Dual-Gate UHF-Microwave MESFET
Manufacturer = Sony Semiconductors
V(BR)DSS (V) = 12
I(D) Abs. Drain Current (A) = 55m
P(D) Max.(W) Power Dissipation = 150m
Noise Figure Max. (dB) = 2.5
@Freq. (Hz) (Test Condition) = 800M
Semiconductor Material = GaAs
Package = SOT-143var