Topband: W7IUV preamp - operating parameters for DCP68

[Tomas vk2ccc]

Hi all

Just wondering if anyone could please advise what would be recommended
operating parameters for DCP68 device based revised W7IUV preamp circuit
for optimal IMD performance (as per http://www.mtmscientific.com/preamp.pdf
).

The intended use with Flags and other small RX antennas in a typical urban
environment for 160m, and potentially for 630m.

Built it, appears to be working OK, initially had too high collector
current to start with, ended up with R3=4.3K for circa 20db gain that does
not appear to drop off too fast, and keeping collector current just above
60ma as otherwise it looks like DCP68 is likely to evaporate from the heat..

Tnx, Tomas VK2CCC