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M A N U A L Simrad HT50/51/53 & Axis 50 GMDSS Handheld VHF Radios
HT50/HT51/HT53 & Axis 50 GMDSS © 2005 Simrad Ltd The technical data, information, and illustrations contained in this publication were to the best of our knowledge correct at the time of going to print. We reserve the right to change specifications, equipment, installation, and maintenance instructions without notice as part of our policy of continual development and improvement.
Instruction Manual 1 GENERAL 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 OPERATION 2.1 Controls ...................................... 8 2.2 Selecting secondary channel sets . . . . . . . . . . . . . . . . . 11 2.3 Disable/enable key beep . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.4 Keypad lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.5 Removing and attaching the battery . . . . . . . . . . . . . . .
Instruction Manual 1 GENERAL 1.1 Introduction The Simrad waterproof handheld VHF range comprises three models: • The HT50 VHF radio is designed for leisure and light commercial use, and meets or exceeds stringent International Regulations EN301-178. • The HT51 model has all the features of the HT50, but includes an accessory socket for use with fistmikes, headsets, and other third party accessories.
HT50/HT51/HT53 & Axis 50 GMDSS 2 OPERATION 2.1 Controls The location of the controls for the HT50 series are shown in Fig 2.1 below. Functions: 1 On / Off 2 High / Low power, Keypad lock 3 PTT (Push-To-Talk button) 4 Volume mode select 5 Squelch mode select 6 Up key 7 Down key 8 Scan mode 9 Dual Watch / Tri-Watch 10 Select Priority / Personal channel 11 Backlight On / Off & Light mode select 1 2 3 5 4 7 6 9 8 11 10 Fig 2.1 - HT50 controls 8 E03766 Issue 3.
Instruction Manual Pressing and holding certain keys will access additional functions. These are indicated by a double beep, or a triple beep if held for longer (Table 1).
HT50/HT51/HT53 & Axis 50 GMDSS a c b f g e d h i a b c d e f g h i Bar graph – Power up Battery level Standby Battery level Transmit Battery level Volume mode Volume level Squelch mode Squelch level pressed Backlight level Personal channel indicator Channel selected Receiving or transmitting indicator High or Low power indicator Function indicator Selected channel stored in memory Channel inhibited from scan Scan mode selected Fig 2.
Instruction Manual • The icon indicates that the selected channel is included in Memory Scan. • Press and hold until double beep sounds to scan all channels (display shows “SCAN”). • Press and hold until triple beep sounds to inhibit/enable selected channel from scan (display shows “INH” or “ENA” respectively). The icon indicates the channel is inhibited. D/W - Dual Watch & T/W – Tri-Watch (9) • Press to select Dual Watch of selected channel and Ch16 (the display shows “D/W”).
HT50/HT51/HT53 & Axis 50 GMDSS 2.3 Disable/enable key beep The HT50 beeps every time a key is pressed to confirm operation. To disable the key beep, press and hold SQ while turning the set on. Repeat this procedure to turn the key beep on again. Second level functions (such as All Channel Scan, Tri-Watch, etc.) will still be indicated by a beep, even if the key beep is disabled. 2.4 Keypad lock The HT50 keypad can be locked to prevent accidentally pressing keys while in a pocket, for example.
Instruction Manual 2.6 Charger options The HT50 is supplied with a TC50 trickle charger that will accept the whole radio or the battery only. The TC50 runs from a 12.6V–15.5V DC supply or from AC mains with an appropriate optional adaptor/power supply. Charging with the trickle charger takes approximately 12–16 hours. There is also a rapid charger available (RC50) which will charge the battery within 1 1/2 hours. 2.
HT50/HT51/HT53 & Axis 50 GMDSS When using a lithium battery pack, the low-level battery indicator may flash under transmit conditions. This does not necessarily reflect the charge level remaining in the battery, as it is due to the different voltage characteristics of a lithium battery pack under load. 2.9 The HT51/HT53 accessory socket The HT51/HT53 features an accessory socket (Fig 2.7) for use with fistmikes, headsets, and boom-mikes, etc.
Instruction Manual 3 APPENDIX 3.1 Licensing Prior to use please check the national licensing requirements for operators. Note In the UK license applications and queries should be made to the following authority: Ship Radio Licencing Radio Licencing Centre The Post Office P.O. Box 1495 Bristol BS99 3QS Website: www.radiolicencecentre.co.uk/rlc A set may only be operated by or under the supervision of the holder of a Marine Radio Operator’s Certificate of Competence and Authority to Operate.
HT50/HT51/HT53 & Axis 50 GMDSS 3.3 Antenna The antenna for the radio is fitted to the unit via a robust screw fitting to an M6 threaded socket on the top of the radio. This system is more rugged than a traditional BNC connector, so the radio’s drop-proof integrity is not compromised by the antenna fixing.
Instruction Manual 3.5 Channel frequencies Note Ch 0 will only be made available in the UK to Coastguard users with written authorization. Ch 70 is restricted for DSC (Digital Selective Calling) use only and is therefore not available on the HT50 and Axis 50 VHF radios. Axis 50 GMDSS models are fitted with simplex channels only. E03766 Issue 3.
HT50/HT51/HT53 & Axis 50 GMDSS 3.6 Battery life guidelines New batteries should be fully (trickle) charged and fully discharged several times to achieve full capacity. To a large extent, the battery life will depend on the usage, or Duty Cycle, of the radio (Tables 2 and 3), i.e. the battery will be drained much quicker if the radio is transmitting continually than if it is just receiving.
Instruction Manual 3.7 Troubleshooting Symptom Possible cause Remedy Unit will not switch on • Battery not charged • Battery not attached correctly to radio • Re-charge battery • Ensure battery is fully engaged (refer to section 2.
HT50/HT51/HT53 & Axis 50 GMDSS 3.8 Spares & accessories The following spares and accessories are available from authorized Simrad service agents. Please quote the relevant part number when ordering.
Instruction Manual 3.9 Technical specification Channel capability .............. .............. .............. .............. .............. . . . . . . .54 international channels 1–28, 60–69, 71–88 .Up to 10 private channels* .UK : includes M (previously 37) and M2 .USA : includes 0, 29, 89, 75, 76, Wx1–10 receive only .Scandinavia : leisure or fishing channels as appropriate .Canada : Canadian and USA channels GMDSS sets have simplex channels only: 06, 08–17, 67–69, 71–74, 77 Frequency range . . . . .
HT50/HT51/HT53 & Axis 50 GMDSS 3.10 Declaration of Conformity English Hereby, Simrad Limited (Margate) declares that this HT50/HT51/HT53 is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. Finnish Simrad Limited (Margate) vakuuttaa täten että HT50/HT51/HT53 tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen mukainen.
Instruction Manual 3.11 Service & warranty Your radio should seldom need servicing, although it will benefit from an application of silicone or Teflon grease to the battery contacts and antenna socket each season. For the HT51 and the HT53 only, please ensure the accessory connector is regularly greased. This unit is guaranteed for 2 years from date of retail sale.
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