Retevis A9190A, User Manual, Page: 4 / 66

Note: Due to the waterproof machine, the battery and the body are relatively compact.
⑩
battery charging interface
Please use the original charger for charging. Do not transmit the radio while charging.
RT78 the main Specification
Frequency range: UHF 400-470MHZ
Channel number: 16*N group （ N ≧ 1)
RF power:≤4w
Channel space:25khz(wideband) 12.5khz(narrowband)
Support network: 2G, 3G, 4G, 5G, WiFi, CDMA, GSM, etc.
Supply voltage: 3.7 V lithium battery
Battery capacity: 5200 mAh
Charging interface: USB
Mode of operation: full-featured APP operation
FM radio: FM 88-108MHz
Frequency stability: ±2.5ppm
Working temperature: -20 ~ +60 ° C
Dimensions: 58 (W) x 125 (H) x 35 (D) mm (without antenna)
Weight: body 140g battery 120g
Receiver
Sensitivity
（
12DB SINAD)
Adjacent Channel Selectivity
intermodulation rejection
False signal response
Audio response
Signal to noise ratio
Wideband
≤0.20μV
≥70db
≥65db
≥70db
±1
～
-3db(0.3
～
3khz)
≥45db
Narrowband
≤0.22μV
≥65db
≥60db
≥70db
±1
～
-3db(0.3
～
2.55khz)
≥40db
3
output power
modulation mode
Adjacent channel selectivity
FM noise
Parasitic and harmonic
Audio response
Modulation distortion
broadband
16KφF3E
≥70db
≥45db
≥60db
±1
～
-3db(0.3
～
3khz)
narrowband
11KφF3E
≥60db
≥43db
≥60db
±1
～
-3db(0.3
～
2.55khz)
Launch part
≤4W
≤3%