5
7.1 Continued
Any current popular aircraft microphone may be used; the only exception being
carbon microphones. They require more current than is available from the
HT870 and therefore would not perform adequately.
8.1
USE OF EXTERNAL HEADPHONES OR SPEAKER
The HT870's internal speaker is rendered inoperative when an external speaker
or headphones are connected to the HT870's top panel mic. jack. The
Internal/External switch must be in the "I/E" or "E" position. Headphone
impedance should be 600 ohms minimum, and speaker impedance should be 8 ohms.
9.1
HT870 LICENSE REQUIREMENTS
If the HT870 is to be used as an aircraft transceiver, the Federal
Communications Commission requires that FCC Form 404 titled "Application for
Aircraft Radio Station License" be submitted prior to operation.
If the HT870 is to be used as a ground station, the FCC Form 406 titled
"Application for Ground Station Authorization in the Aviation Services" must
be submitted prior to operation.
10.1 NICKEL CADMIUM (NiCad) BATTERY PACK SPECIFICATIONS
Nominal Operating Voltage: 9.6 Vdc
Nominal Capacity: 600 milliamp hour
"Fully Charged State" Output Voltage: 10.8 to 11.6 Vdc
"Discharged State" Output Voltage: 8 Vdc
Quick Charge: 150 mA max/5-6 hours for full charge
Standard Charge: 45 mA/16-17 hours for full charge
Advisable Temperature Ranges: Charging: 10 to 40 degrees C
Discharging: -30 to 60 degrees C
Storage (3 months): -30 to 50
degrees C
