On Sun, Jan 20, 2013 at 3:53 PM, David <davidwhess@...> wrote:
It is 2N918 and not 2N198. The 2N918 was a very common early VHF
transistor. My 184 has 2N3605 transistors as well.
The 2N918 is:
900 MHz @ 4 mA
30 Vcbo 15 Vceo 50 mA
From the Tektronix parts book the 2N3605 is:
300 MHz @ 10mA
18 Vcbo 14 Vceo 200 mA
The ubiquitous and inexpensive 2N2222, 2N3904, and 2N4401 should all
work as replacements.
I think those general purpose parts are a bit too slow to be good
substitutions. I would try something faster like PN918, PN2369A,
PN4275, 2N5770, MPSH17, etc. Everyone should have at least one of
those types in the parts box.
