Technical development of the Cobra Brass F System,
exploration of Cobra Brass E data and development of a
UV Spectral imager are supported.

The Cobra Brass sensor launched in late 1997 will provide
a complementary data set


It appears that Cobra Brass E was the sensor on the NRO
CAPRICORN/USA 137 satellite launched on 29 January 1998
(http://www.astronautix.com/craft/capicorn.htm)

Note that the inferred existence of CB A,B,C and D is
consistent with the speculation that they are carried
on the NOSS-2 A/TLD/SLDCOM hosts (three in orbit, one lost
in a launch accident).


http://www.cambr.uidaho.edu/news/spacecraft.asp

Spacecraft With CAMBR Chips
Center for Advanced Microelectronics and Biomolecular Research
University of Idaho
Updated January 2001

[snip]

Cobra Brass - E / DOE
CCSDS Lossless Data Compressor (USES)
Rad Hard 1.2um Gate Array (UTMC)
Reed Solomon CCSDS Telemetry Channel Coder (RS16e)
Rad Hard 1.2um Gate Array (UTMC)
Launched: Sometime 1997/early 1998