Retevis RT90 Mobile Dual Band DMR Mobile Radio Review

Description：

RT90 supports analog and digital mode, It provides dual band, dual standby, dual display, dual time slot, operating on both 400-480MHz UHF frequencies and 136-174MHz VHF at up to 50 watts VHF and 45 watts UHF.
Using Time-Division Multiple-Access (TDMA) digital technology,AMBE++vocoder, compatible with Mototrbo and DMR Tier I &II.
The RT90 supports 250 zones, 3000 channel, 10000 contacts, it has built-in CTCSS/DCS, channel scan, priority scan, short text message features, draft message edit, contacts check and edit, and encryption.
RT90 has other function, including Private Call, Group Call and All Call, it also includes Lone worker mode, power save mode, low power alarm, an emergency alarm and VOX capability.

Feature:

Specifications:

General
Frequency Range(MHz)	VHF: 136-174Mhz UHF:400-480Mhz
Channel	3000
PLL Channel Spacing	6.25/12.5/25KHz
Voltage Rating	DC 13.8V
Operating Temperature	-30℃~+60℃
Storage Temperature	-30℃ ~+85℃
Dimention	14350175 mm
Compatible With American Military Standard	(MIL-STD-810C/D/E)
Transmitter
RF Power Output	L:25W H:50W (VHF) L:25W H:45W (UHF)
FM Hum and Noise	-40dB @12.5KHz -45dB @25KHz
Modulation limited	+/- 2.5KHz @ 12.5 KHz +/-5.0KHz @ 25KHz
Conducted/radiated emission	-36 dBm ＜ 1GHz -30 dBm ＞ 1GHz ＜ 4GHz
Adjacent channel power	-60dB @12.5KHz -65dB @25KHz
Audio Response	+1dB ~ -3dB
Audio distortion	3%
FM Modulation	12.5KHz:11KOF3E 25KHz:16KOF3E
4FSK digital modulation	12.5KHz only date:7K60FXD 12.5KHz date and audio:7K60FXE
Digital protocol	ETSI TS 102361-1,-2,-3
Digital vocoder type	AMBE++
Digital agreement	DMR
Receiver
Frequency stability (-20℃+60℃,+25℃)	+/-1.0ppm
Digital Sensibility	0.3uV/-117.4dBm (BER 5%) 0.7uV/-110 dBm (BER 1%)
Analogue Sensibility	0.35uV/-116dBm(20dB SINAD) 0.22uV/-120dBm(20dB SINAD)
Rated audio	5W
Adjacent Channel Selectivity	TIA603C:60dB@ 12.5 KHz ETSI: 60dB@12.5 KHz
Intermediation	TIA603C:65 dB ETSI:65dB
C0-Channel Rejection	12dB @12.5KHz
Spurious Rejection	TIA603C:70dB ETSI:70dB
Audio distortion @ rated audio	≤3%
FM Hum and Noise	-40dB @12.5KHz -45dB @25KHz
Audio response	+1dB~-3dB
Spurious emission	-57dBm@m ＜ 1GHz -47dBm@m ＜ 1GHz
Bolck 84db