1, License-free Band KDR/SRBR444
2, Delivery time: About 7 business days.
Order Handling Time within 3 Working days(Pre-sale products excluded).
Description:
KDR444 (Norwegian "kortdistanseradio", Swedish "kortdistansradio", "short distance radio") or KDR, is a licence-free personal radio service in the UHF range used in Sweden and Norway. It is usually referred to as SRBR444 (Short Range Business Radio) in Sweden. Transmitters are limited to 2W ERP (previously 1W) in Sweden and 0.5W in Norway. FM with a bandwidth of 25 kilohertz is used. Norway require a radio with fixed antenna to be used with these frequencies.
Features:
- Indicator
- Channel Switch
- Power Switch
- Monitor
- Squelch level
- TOT
- Scan
- CTCSS
- Voice Annunciation
- Power Saving Function
- Battery Voltage Alert
- Busy Channel Lockout
- VOX
- QT/DQT
- Local alarm function
Norway has 6 channels, while Sweden has 8 channels. Note that channel 6 is different in Norway and Sweden.
|
|
Norway |
Sweden |
|
Channel |
Frequency (MHz) |
Frequency (MHz) |
|
1 |
444.6000 |
444.6000 |
|
2 |
444.6500 |
444.6500 |
|
3 |
444.8000 |
444.8000 |
|
4 |
444.8250 |
444.8250 |
|
5 |
444.8500 |
444.8500 |
|
6 |
444.9750 |
444.8750 |
|
7 |
|
444.9250 |
|
8 |
|
444.9750 |
KDR 444 is specific to parts of Scandinavia and is not cleared for use across the European Union.
Technical parameters:
|
General Specifications |
|
|
Frequency Range |
444.600-444.975 MHz |
|
Frequency range |
|
|
Channel Capacity |
6 or 8 |
|
Channel Spacing |
12.5KHz/25kHz |
|
Antenna Impedence |
50Ω |
|
MIC Impedence |
2.2kΩ |
|
Working Voltage |
3.7V DC |
|
Frequency Stability |
±2.5×10-6 |
|
Weight |
252g |
|
Dimensions (WxHxD) |
58x135x32mm |
|
Transmitter |
|
|
Output Power |
2W |
|
Modulation Sensitivity |
12±3mV |
|
Modulation Distortion |
≤5% |
|
Carrier Frequency Tolerance |
±2.5×10-6 |
|
Modulation Limit |
≤5kHz |
|
Occupied Bandwidth |
≤16 kHz |
|
Modulation Characteristic |
±3dB |
|
Spurious Radiation |
≤7.5 μW |
|
Adjacent Channel Selectivity |
≤-65 dB |
|
Transmitting SNR |
≥40 dB |
|
Receiver |
|
|
Reference Sensitivity |
-121dBm |
|
Squelch Sensitivity |
≤0.22 μV |
|
Audio Power |
1000mW |
|
Audio Distortion |
≤5% |
|
Modulation RX Bandwidth |
≥±7kHz |
|
Audio Response |
≥+2dB, ≤-10dB |
|
Co-channel Injection |
≥-8 dB |
|
Block |
≥85 dB |
|
Channel Selectivity |
≥65 dB |
|
Receiving SNR |
≥40 dB |