Hỗ trợ trực tuyến

Cách chăm sóc ống nhòm

Cách chăm sóc ống nhòm

Ống nhòm là công cụ linh hoạt cung cấp hình ảnh phóng to của các vật thể ở xa, được sử dụng trong nhiều môi trường khác nhau, chẳng hạn như đi bộ đường dài, ngắm động vật hoang dã, ngắm chim, săn bắn, ngắm sao, chơi gôn, sự kiện thể thao và sân khấu. Việc chăm sóc một thiết bị cũng là điều cần thiết để đảm bảo sử dụng lâu dài. Việc bảo trì, vệ sinh và bảo quản ống nhòm phù hợp chỉ có thể kéo dài tuổi thọ của ống nhòm: do đó, túi xách, dây đeo cổ, khăn lau nhà trở thành những phụ kiện không thể thiếu.

TẤT TẦN TẬT CÁC HƯỚNG DẪN CÁCH CHỌN MUA ỐNG NHÒM PHÙ HỢP NHẤT

TẤT TẦN TẬT CÁC HƯỚNG DẪN CÁCH CHỌN MUA ỐNG NHÒM PHÙ HỢP NHẤT

Có thể nói ống nhòm là thiết bị vô cùng cần thiết cho những chuyến tham quan, du lịch nên không khó để lý giải vì sao nó lại được ưa chuộng. Nếu bạn đang có ý định mua nhưng vẫn chưa biết cách chọn ống nhòm sao cho phù hợp thì tham khảo bài viết sau nhé!

Thiết bị bộ đàm TK-2168 / TK-3168

Miêu tả:

TK-2168 / 3168

Compact VHF/UHF FM Portable Radios

TK-2168 / 3168

Compact VHF/UHF FM Portable Radios

General Features
COMPACT DESIGN

OPERATING EASE

INTERNAL VOX/HANDS FREE READY

PRIORITY SCAN & TALK BACK

BUILT-IN VOICE SCRAMBLER

QT/DQT/DTMF

PROGRAMMABLE CALL ALERT TONES

PROGRAMMABLE FUNCTION KEYS

HIGH-QUALITY AUDIO

8- TO 12-HOUR BATTERY PACKS

TOUGH & WATER RESISTANT

OPTION BOARD
Compact enough to carry anywhere with ease, this smart new radio has a distinctively ergonomic form thats handy to hold and operate.
OPERATING EASE
The rotary and key controls on the TK-2168/3168 have been designed to provide the user with positive detent feedback even if carried and operated under-cover or in a pocket.
Enjoy the convenience of hands-free operation using any audio accessory. By simply talking, the internal VOX (voice-operated transmission) with 10-level sensitivity adjustment provides PTT action. VOX is also ideal for specialized job tasks and events where hands-free, constant and/or repetitive communications is necessary.
PRIORITY SCAN & TALK BACK
Scanning is a simple way to monitor multiple channels (16-channel capacity) and the TK-2168/3168 offers both standard and priority scan modes. Talk Back allows immediate response to a received call without having to manually search or change channels.
BUILT-IN VOICE SCRAMBLER
The TK-2168/3168 includes a voice inversionscrambling feature that provides basic communications security against casual eavesdropping.
QT/DQT/DTMF
The industry standard tone/code squelching formats QT (CTCSS) and DQT (digital) provide system access and group segregation on shared frequencies. DTMF PTT ID is included for dispatch operations or for a simple remote control application. The DTMF decode capabilities include a selective call ID, transpond with ID, gwild cardhgroup calling and radio stun. Also, selective calling has call alert tones and LED indications.
PROGRAMMABLE CALL ALERT TONES
The programmable call alert pattern, duration, tone and volume provide personalized and distinctive selective calling alerts.
PROGRAMMABLE FUNCTION KEYS
The three side PF Keys are programmable to any of the many functions available on the TK-2168/3168, permitting a customized fit for specific users.
HIGH-QUALITY AUDIO
Clear audio means confident communications. The TK-2168/3168 large speaker, full half-watt of audio output and tailored response characteristics provide optimum audio in even noisy environments.
8- TO 12-HOUR BATTERY PACKS
The KNB-25A Ni-Cd 8-hour* pack is the economical standard for the TK-2168/3168 portables. The optional KNB-24L Lithium Ion 9-hour* pack offers the ultimate in compact, lightweight carrying comfort. For super high-capacity talk and standby time, the KNB-26N Ni-MH 12-hour pack is the powerhouse of choice.
*Battery life is based on 5% transmit-5% receive-90% standby duty cycles.
TOUGH & WATER RESISTANT
Built tough to take rough treatment in stride, these portables have passed the advanced IP54/55 and MIL-STD 810 gblowing rainh water resistance tests and meet/exceed eleven other stringent MIL-STD 810 C/D/E/F environmental standards. This proves that whatever conditions may be, the TK-2168/3168 is ready to answer the call.
OPTION BOARD
Despite its compact design, the TK-2168/3168 can be fitted with option boards for advanced operating of trunking service or security
TK-2168TK-3168
GENERAL
Frequency Range
Type 1
Type 3

136 ~ 174 MHz

440 ~ 480 MHz
400 ~ 430 MHz
Number of ChannelsMax. 16
Channel spacing
Wide/Narrow

25, 30 kHz/12.5,15 kHz

25 kHz/12.5 kHz
Operating Voltage7.5 V DC ± 20 %
Battery life
(5-5-90 duty cycle with battery saver off)
with KNB-24L (1400mAh)
with KNB-25A (1200mAh)
with KNB-26N (2000mAh)



Approx. 9 hours
Approx. 8 hours
Approx. 12 hours
Operating Temperature Range-30º C ~ +60º C -10ºC ~ +60ºC when KNB-24L/26N in use
Frequency Stability±2.5ppm (-30ºC ~ +60ºC)
Antenna impedance50 Ω
Channel frequency spread
Type 1
Type 3

38 MHz

40 MHz
30 MHz
Dimensions (W x H x D)
Projections not Included
Radio Only
with KNB-24L
with KNB-25A
with KNB-26N


56 x 109.3 x 18.4mm
56 x 109.3 x 34.5mm
56 x 109.3 x 40.7mm
56 x 109.3 x 40.7mm
Weight (net)
Radio Only
with KNB-24L
with KNB-25A
with KNB-26N

165g
290g (without antenna)
355g (without antenna)
400g (without antenna)
RECEIVER (Measurements made per TIA/EIA-603)
Sensitivity (12 dB SINAD)
Wide/Narrow

0.25 μV/0.28 μV
Selectivity
Wide/Narrow

70 dB/62 dB
Intermodulation distortion
Wide/Narrow

65 dB/60 dB
Spurious Response65 dB
Audio Output500mW with less than 10% distortion
TRANSMITTER (Measurements made per TIA/EIA-603)
RF Power Output
High/Low

5 W/1 W

4 W/1 W
Spurious Response70 dB
Modulation
Wide/Narrow

16KØ F3E/11KØ F3E
FM Noise
Wide/Narrow

45 dB/43 dB

45 dB/40 dB
Audio DistortionLess than 5%
Kenwood reserves the right to change specifications and features without prior notice.

Applicable MIL-STD
Military StandardsMIL-STD 810C
Methods/Procedures
MIL-STD 810D
Methods/Procedures
MIL-STD 810E
Methods/Procedures
MIL-STD 810F
Methods/Procedures
Low Pressure500.1/Procedure I500.2/Procedure I, II500.3/Procedure I, II500.4/Procedure I, II
High Temperature501.1/Procedure I, II501.2/Procedure I, II501.3/Procedure I, II501.4/Procedure I, II
Low Temperature502.1/Procedure I502.2/Procedure I, II502.3/Procedure I, II502.4/Procedure I, II
Temperature Shock503.1/Procedure I503.2/Procedure I503.3/Procedure I503.4/Procedure I, II
Solar Radiation505.1/Procedure I505.2/Procedure I505.3/Procedure I505.4/Procedure I
Rain506.1/Procedure I, II506.2/Procedure I, II506.3/Procedure I, II506.4/Procedure I, III
Humidity507.1/Procedure I, II507.2/Procedure II, III507.3/Procedure II, III507.4
Salt Fog509.1/Procedure I509.2/Procedure I509.3/Procedure I509.4
Dust510.1/Procedure I510.2/Procedure I510.3/Procedure I510.4/Procedure I, III
Vibration514.2/Procedure VIII, X514.3/Procedure I514.4/Procedure I514.5/Procedure I
Shock516.2/Procedure I, II, V516.3/Procedure I, IV516.4/Procedure I, IV516.5/Procedure I, IV

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