How to fix NASA MARINE SX 35 DSC that won't turn on?
If your NASA Transceiver won't turn on, rotate the VOL knob clockwise, check the buss voltage, and replace the fuse (6.3 Amp). Also, check the power cable and connections. The issue might be due to no DC voltage, a blown fuse, or faulty wiring.
What to do if there is no sound from NASA MARINE SX 35 DSC Transceiver speaker?
If you aren't getting any sound from the NASA Transceiver speaker, first ensure the squelch control (SQ) is set fully counter-clockwise and the volume control (VOL) is set clockwise. The squelch control might be set too high, or the volume control might be set too low. Also, select a different channel and check for the TX annunciator in the display, as the channel could be blocked by a stuck mic button. Finally, unplug the external speaker cable to rule out a faulty external speaker or cable.
Why latitude and longitude coordinates are not displayed on NASA MARINE SX 35 DSC Transceiver?
If the latitude and longitude coordinates are not displayed on your NASA Transceiver, use the Menu\DataSet\LLposition option to turn the display on. Also, check the GPS cable and connections to ensure they are not faulty or disconnected. Finally, make sure the GPS is functioning and the output format is NMEA0183 with RMC sentence selected. The issue might be that the Lat/Lon position display is not turned on, the GPS cable is faulty or disconnected, or the GPS is not operating or the position is invalid.
What to do if NASA MARINE SX 35 DSC transmit signals are weak?
If you're experiencing weak transmit signals on your NASA Transceiver, even with HI power settings, have a technician test the transmitter output power and antenna VSWR. Also, inspect the antenna cable carefully for nicks, as wet coax absorbs transmitter power. The antenna or a faulty coaxial cable may be the cause.
General| Brand | NASA |
|---|---|
| Model | MARINE SX 35 DSC |
| Category | Transceiver |
| Language | English |
Provides an overview of the SX 35 DSC VHF transceiver features.
Details potential interference and user responsibilities for safe operation.
Outlines requirements and contacts for radio licensing in the UK.
Information needed for station license application for DSC operation.
Lists essential equipment for two-way voice and DSC VHF communication.
Lists the items included in the SX 35 DSC package.
Lists optional accessories available for the transceiver.
Step-by-step guide for making a manual distress call on Channel 16.
Procedures for establishing initial contact and switching channels for communication.
How to use the transceiver to make phone calls via marine operators.
Lists communications that are forbidden by regulations.
Guidance on selecting a suitable mounting location for the transceiver.
Recommendations for quality antenna installation for optimal radio performance.
Instructions for correctly connecting the transceiver to the ship's power.
Details connecting a GPS receiver for position reporting via NMEA.
How to connect an external speaker for audio output.
Explains the purpose and pin assignments of rear panel connectors.
Introduces the operational capabilities of the SX 35 DSC.
Describes the front panel controls, keypad, and LCD display.
Step-by-step instructions for powering the transceiver on and off.
Explains how to adjust volume and squelch for optimal audio output.
Details the three methods available for changing operating channels.
Information on using international and local VHF marine channel frequencies.
Explains the function of each key on the transceiver's front panel.
Describes the functions of the microphone keypad for channel selection and data entry.
Explains the importance and use of Channel 16 for distress and calling.
Details the process for transmitting voice communications and DSC calls.
Feature for quickly switching between last working and primary channels.
How to toggle between 25W and 1W transmitter power settings.
Explains the three available channel scanning modes: Priority, All, and Memory.
Scans the Primary Calling Channel and the last selected working channel.
Scans all channels except channel 70, with options to remove noisy channels.
Steps for adding and managing preferred channels in the memory bank.
How to delete individual channels or the entire memory bank.
Procedure to initiate scanning of the programmed memory channels.
Instructions on how to access and navigate through the transceiver's menu system.
Lists the primary topics available within the transceiver's main menu.
Step-by-step guide to add names and MMSIDs to the DSC calling directory.
Explains the screen layout and cursor movement for directory entry.
Details on using the microphone keypad for entering alphanumeric characters and symbols.
Instructions for modifying existing names and MMSIDs in the DSC directory.
How to adjust the brightness of the LCD display and keypad backlighting.
How to adjust LCD display contrast for optimal readability.
Options for controlling the display of Lat/Lon, Date/Time, and Speed/Course.
Procedure for manually entering Lat/Lon coordinates and time for distress messages.
Detailed steps for entering latitude and longitude values and hemisphere.
Warning about limited entry attempts and potential blocking of MMSID entry.
Step-by-step guide to program the vessel's 9-digit MMSI into the transceiver.
How to select between SHIP ID or GROUP ID for MMSID entry.
Details the screen for entering and confirming the MMSID.
How to select between 12-hour or 24-hour time format.
How to set the local time offset from Universal Coordinated Time (UTC).
Explains the NMEA CHECKSUM menu and its function.
Warning screen reminding the user to manually enter Lat/Lon coordinates.
Emphasizes the necessity of obtaining and programming an MMSI for DSC use.
Displays the initial screen when the distress button is activated.
Step-by-step guide to initiate and transmit a distress call.
Lists the different categories of distress that can be selected.
Indicates that the distress message has been transmitted.
Procedure to manually cancel automatic retransmissions of a distress call.
Screen showing a distress call has been acknowledged by a coast station.
How to receive and respond to distress calls from other vessels.
Screen showing an acknowledgment sent to another vessel in distress.
Screen indicating a distress message relay from another vessel.
Explains the four types of DSC calls and their priorities.
Procedures for making and receiving individual DSC calls to/from vessels or stations.
How to make DSC calls by selecting names from the calling directory.
Step-by-step process to initiate a call using the DSC calling directory.
Procedure for making DSC calls to vessels/stations not in the directory.
Procedure for making DSC calls to vessels/stations not in the directory.
How to select a working channel and enter MMSID for manual DSC calls.
Guide on sending Urgent or Safety DSC calls to nearby vessels.
How to select the call type (Urgent or Safety) for an All Ship's call.
Screen for verifying the selected call type before sending.
Steps to arrange and contact other vessels using a group MMSID.
How the transceiver displays and handles incoming Individual DSC calls.
Screen for acknowledging a received Individual Routine DSC call.
How to handle incoming Individual Safety DSC calls.
How to handle incoming All Ship's Urgent DSC calls.
How to handle incoming All Ship's Safety DSC calls.
How the transceiver displays and handles incoming Group DSC calls.
Menu for accessing the call log and replying to entries.
Displays details of the most recent incoming call from the call log.
Precautions to prevent damage and ensure a long useful life for the transceiver.
Describes special functions like Simulator Mode, Clear Memory Channels, etc.
A chart listing common symptoms, probable causes, and corrective actions.
Lists compliance, channel count, input voltage, dimensions, and weight.
Details about the 4-line LCD display, character count, and backlighting.
Describes the special styled microphone with alphanumeric keys.
A chart detailing format specifiers, categories, and telecommand symbol numbers.
Description of the physical distress key, its cover, and hold function.
Information on the 32-entry call log and instant call back functionality.
Details on the 32-entry directory, scrolling, and editing capabilities.
Describes the three different tone sequences provided for alarms.
Details NMEA sentence decoding and checksum options.
Lists various built-in special functions like GPS Simulator and Auto Calendar.
Details power output, current, modulation, frequencies, and emissions.
Details receive frequencies, sensitivity, squelch, audio output, and selectivity.
Tables listing channel numbers, frequencies, and usage for VHF communication.
Explains Channel 16 as the Distress, Safety, and Calling channel.
Provides important notes and restrictions regarding the use of specific VHF channels.
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