Introduction
Active
Frequency
This guide describes the operation of the Apollo SL40 VHF Communication Transceiver.
Transmit | Standby | Standby | Large, Outer | Small, Inner |
Annunciator | Symbol | Frequency | Knob | Knob |
COM | APOLLO SL40 |
119.80s121.50
| PULL SQUELCH | TX |
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Photocell | OFF |
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| EC MON | RCL MEM |
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Power/Volume/Squelch |
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| Store | |
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| Memory |
| Flip/Flop |
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| Emergency | Frequency | Recall |
| Frequency | Channel | Monitor | Memory | |||
Display | The | ||||||
| dot matrix alphanumeric high intensity LEDs. A | ||||||
| photocell is located in the top left corner of the front | ||||||
| panel display. The photocell automatically controls the | ||||||
| intensity of the display from low brightness at night to | ||||||
| high brightness during daylight operation. Brightness | ||||||
| levels may also be controlled manually. | ||||||
Annunciators Several annunciators are used to help indicate the operating modes of your Apollo SL40. The TX (Transmit) annunciator is lighted whenever you are transmitting. If the avionics bus drops below 9 VDC, the SL40 will not transmit. An LED will be lighted above the MON and RCL buttons when these functions are selected. An “s” will appear to the left of the Standby frequency. An “m” will appear to the left of the Standby frequency when you are using the Monitor function. An “I” indicates the Intercom function is being used.
TX - Transmit
s - Standby Frequency
m - Monitor Mode
I - Intercom
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