****MAXIM INTEGRATED*** 
***SC1894 HW package version 2.0***

SC1894-DB500A (470 - 928 MHz)

Coupler(CP2) connections were modified in schematic as per part datasheet. 
BAL 50 – 200(T1) unbalanced out port was connected to pin 6 of CP2. This is removed and connected to pin1 of CP2.
Layout was correct and unchanged.

SC1894-DB200A (225 - 470 MHz)
SC1894-DB500A (470 - 928 MHz)

Pins Naming Conventions for BALUNS (T1,T2,T3) modified in all Schematics as per the part data sheet
T1,T2,T3 - pin5 Name changed from GND to  GND/DC
Layout was correct and unchanged.

DL246A Delay Line is not recommended for new designs. 
Anaren XDL15-2-020S (2ns) or XDL15-3-030S (3ns) delay line solutions are recommended: smaller, easier to manufacturer and provide better performances.
SC1905 Evuation board designs with the Anaren XDL15-2-020S (2ns) can be used as a reference as the SC1894 and SC1905 are PCB compatible.
