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Kydera CDM-550H DMR UHF 40W 25KM Digital Car Radio [DISCONTINUED]

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SKU: 28-120-156
  • Regular price $349.99
  • Regular price SAVE $-349.99

DUAL WORKING MODE: Kydera CDM-550H can operate in either analog or digital mode. It is compatible with the prevalent analog system, ensuring a smooth analog-to-digital transition. DMR features a clearer vocie and SMS function, also with private/group/generall call, remote detection, digital ID code, call log, etc. As a analog radio, it is with CTCSS/DCS, narrow/wide band.

UHF & 512 CHANNELS: Kydera CDM-550H supprts UHF frequency (400-480MHZ), it's the best option when you intend to use it inside city limits where you are surrounded by a lot of tall buildings and your signals are expected to pass through multiple walls. Besides, you can store 512 personal channel ( 256 for analog & digital respectively) by programming. With scrambler function, other machine can receive your signals, but can not hear clearly what you say (with anti-frequency monitor).

40W & TDMA TECHNOLOGY: With 40W high power, you will ebjoy a further distance of talking with your ham friends, up to 25km. On a permiteed frequency, this DMR car radio can obtain double calling capacities by means of TDMA technology.

LARGE COLORFUL LCD DISPLAY: Kydera CDM-550H is equipped with a big colorful TFT high definition display screen, providing vivid color display, visual icons, and user-friendly menu operation, making operation easier and agiler.

RELIABLE QUALITY: Kydera CDM-550H is strictly compliant with MIL-STD-810 C/D/E/F and IP54 standards, ensuring outstanding performance even under harsh environments. Besides, it's upgradable, you can enjoy further features vis software without buying a new machine.

RF power output: 40W/25W high low power
Frequency range: UHF: 400-480MHz
Channel: 512
Battery voltage: 7.4V (Li-ion battery)
Antenna impedance: 50Ω
Dimensions: 140 x 175 x 46mm
Weight: 1500g

Other Features:
Main features for digital ham radio
Privacy/group/generall call
Digital ID code
Call alert
Call log
Remote Kill/Stun/Receive
Remote monitor/detection
Voice encription

Main features for analog mode:

Main features for both digital and analog mode:
System setting
TFT 2.4 inches display
Individual calling
General calling
Group callings
Analog/digital mode switch
FM radio
Emergency alarm

Package Content:
1 x Kydera CDM-550H Car Transceiver
1 x DC Power Cable
1 x Programming Cable
1 x Mounting Bracket
1 x Microphone
1 x Screw
1 x Fuse
1 x Software CD

1 Year and 6 months
Manufacturer's Warranty.
• Radioddity's limited warranty applies to all BRAND NEW items sold by and other authorized dealers.
• This warranty is non-transferable and proof of purchase from us or an authorized dealer is required for warranty service.

What Does This Limited Warranty Cover?

We warrant that the Products are free from defects in materials and workmanship under normal use and use in accordance with the respective Product user manual, during the Warranty Period. Please refer to the Instructions inside each package for a description of proper use and care of the unit.

What Does This Limited Warranty Not Cover?

This limited warranty does not cover damages directly or indirectly arising or resulting from or during:

(1) accident, misuse, abuse, vandalism or acts of God (including lightning and other weather conditions)

(2) use with another product or other damage or loss suffered by the use or combination of any other item

(3) improper or inadequate maintenance

(4) repairs by an unauthorized service technician

(5) normal wear and tear

If you are satisfied with our products and service, please kindly leave us a positive product review. Any problem, be free to contact us
We strive to answer all emails as quickly as possible, but due to high email volume, it may take time for us to reply. Thanks in advance for your patience!

Order Processing

All orders will be processed within 2 business days after full payment is received. Tracking number will be updated as soon as it's available and be sent to our Radioddity Members. So We strongly suggest you register as a Radioddity Member. If the item you ordered is temporarily out-of-stock, you will be contacted by our customer service representatives. You can choose to wait for restocking or cancel the order.


Flat Shipping Rates




Express (free)

Flat fee


$4.99 for US, CA, DE, AU, IT, JP, NZ
$9.99 for other

Free when order amount ≥ $99.99

Ship from

➤ China warehouse

➤ China warehouse (DHL Express Shipping)
➤ United States warehouse (Las Vegas, New Jersey)
➤ Germany warehouse (Berlin)
US/DE/IT/FR/ES Amazon warehouse

➤ China warehouse (DHL Express Shipping)
➤ United States warehouse (Las Vegas, New Jersey)
➤ Germany warehouse (Berlin)
US/DE/IT/FR/ES Amazon warehouse

Delivery time

15-25 days

3-5 days

3-5 days


Customs fee not included. Please be noted that Express shipping from China to some countries might result in customs fee.
For Canada, items will be shipped from China.


How Do I Change The Shipping Address Or Cancel My Order
Contact immediately if you need to change the shipping address or cancel your order. Please be advised that some orders are shipped very soon after placement and it will not always be possible to make changes to the shipping address and/or cancel the order.