UM400 v4.3

Added native support for blocks 470, 19 and 944, to be used whenever an existing UM400 receives a new RF board that places it on block that was not previously supported. This version is otherwise identical to version 4.2.


UM400 v3.5

Latest version for TI PLL. Backport of higher precision subsonic filter from v4.2.

UM400 v2.9

Latest version for Philips PLL. Backport of higher precision subsonic filter from v4.2.

UM400 v4.2

  • Latest version for National PLL.
  • Replaced subsonic filter with a quieter one, for a slight improvement in noise performance.

UM400 v4.1

Added mode 6 emulation and digital subsonic filter.