225Appendix E: Additional InformationSpecificationsSize: 0.8" x 5.2" x 5.2" (21 mm x 133 mm x 133 mm)Weight: 11 oz (0.32 kg)Power Requirements:6 V dc to 25 V dc, less than 30 mA (LEDS on, unit active)6 V dc to 25 V dc, less than 15 mA (LEDS off, unit inactive)Power Plug Polarity: Center pin positiveWatch Dog Timer: Approximately 2-1/2 minutesExternal Carrier Detect (XCD): Pulldown to groundExternal Reset: Pulldown to groundPTT Output: Open drain, +50 V dc max, 200 mA maxAudio Output:Continuously adjustable: 1 mV p-p to 4 V p-pOutput Impedance (ac coupled): 600 ΩModulation:1200 bps FSK, full duplexCCITT V.23 (1300 Hz / 2100 Hz)Audio Input:Input Sensitivity: 5 mV p-pDynamic Range: 70 dBInput Impedance (unbalanced): 10 kΩ (600 Ω with Jumper J3 installed)Max Input Voltage: 12 V dc; 35 V p-p sinusoidalModes of Operation Packet, WeFax, KISS, XKISS, Host, GPSOther Features: PBBS, KA-NODE, Remote Access, and, as an option, K-Net
