Application Note PYRAMID MODEL #: SVR-200 / SVR-250 RADIO MODEL: ICOM F5061/6061 Series ENGINEER: M. Foley Connections: SVR Jumpers: JP1 J1 J2 J4 J5 J6 J7 J8 J9 SVR Black/Shield White Blue Green Red Yellow Violet Brown Grey [-] [Out] [Out] [Out] [Out] [Out] [Out] [+] [In] DATE:16-Dec-09 Page 1 of 1 APPROVAL INITIALS ENGINEER DEPT. HEAD Function Ground Tx Audio Out Remote enable/disable PTT Out Switched B+ Rx Audio In COR Local Mic In On Air Detect Remote Enable Tx audio level Tx audio impedance Local mic audio loop Local mic PTT loop Local Mic Sensitivity Rx Sensitivity Pull up resistor MCOR Pull up resistor AN #: 278A SVR Program: Radio DB25 connector Pin 7 Pin 8 External Switch To Ground Pin 19 Pin 1 * See Notes Pin 9 Pin 10 N/C N/C Mobile COR Polarity: Mobile Type: On-Air Polarity: Tx Audio Response: Rx Audio Response: Local Mic Repeat Low Conv. --Flat Flat Disabled Additional Modifications (SVR-200 / SVR-250): None Additional Modifications (Radio): 1. From the bottom side of the "Main Unit", solder a jumper wire from the input of IC20(TA7808F), to Pin 1 of the DB25 connector. This provides SWB+ to Pin 1 of the DB25 connector. 2. Ensure that solder bead F is removed and that solder bead D is installed on the Main Unit PCB of the radio. This enables the external audio input. 3. In the radio cloning software, to set Pin 10 as Carrier Operated Relay: Under "Common", then "Common" again: "EXT OUT", set RX EXO to "ON" and it's Delay Timer to "OFF".