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TROUBLESHOOTING
The problems described in this table are commonly encountered operational malfunctions. These types of difficulties are usually caused by improper
Note: When 2 frequencies are received in the same band and these frequencies have relationships per the equation below or other similar relationships, an internal heterodyne may be heard. This is not a defect.
VHF/UHF mode: (UHF receive frequency – 45.05 MHz) x 2 – (VHF receive frequency + 38.85 MHz) x 4 = 38.85 MHz or 45.05 MHz (UHF receive frequency – 45.05 MHz) – (VHF receive frequency + 38.85 MHz) x 2 = 38.85 MHz
VHF/VHF mode: (VHF receive frequency on the UHF band + 45.05 MHz) x 5 – (VHF receive frequency on the VHF band + 38.85 MHz) x 5 = 38.85 MHz or 45.05 MHz (VHF receive frequency on the UHF band + 45.05 MHz) x 4 – (VHF receive frequency on the VHF band + 38.85 MHz) x 4 = 38.85 MHz
(VHF receive frequency on the VHF band + 38.85 MHz) – (VHF receive frequency on the UHF band + 45.05 MHz) x 0.75 = 38.85 MHz
UHF/UHF mode: (UHF receive frequency on the VHF band – 38.85 MHz) x 3 – (UHF receive frequency on the UHF band – 45.05 MHz) x 3 = 38.85 MHz or 45.05 MHz (UHF receive frequency on the VHF band – 38.85 MHz) x 4 – (UHF receive frequency on the UHF band – 45.05 MHz) x 4 = 38.85 MHz or 45.05 MHz
Problem | Probable Cause |
| Corrective Action | Page | |
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The transceiver will not | 1 The power cable was connected | 1 | Connect the supplied DC power cable | 3, 4 | |
power up after connecting | backwards. |
| correctly: |
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a 13.8 V DC power supply |
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| Red ➞ ( + ); Black ➞ ( – ). |
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and pressing the PWR | 2 One or more of the power cable | 2 | Look for the cause of the blown fuse(s). | 5 | |
switch. Nothing appears | |||||
fuses are open. |
| After inspecting and correcting any |
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on the display. |
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| problems, install a new fuse(s) with the |
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| same ratings. |
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| 3 The front panel was not connected | 3 | Separate the front panel from the main | 84 | |
| securely to the main unit of the |
| unit by using the release switch on the |
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| transceiver. |
| rear of the front panel, then lock the front |
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| panel securely to the main unit by using |
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| the same switch. |
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| 4 The connectorized cable was not | 4 | Connect the connectorized cable correctly. | 3, 4 | |
| correctly connected. |
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| Continued |
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