V
TECH
E
NGINEERING
C
ANADA
L
TD
.
TITLE
Product Specification
MODEL
VTH1930 (Wireless Headset Phone)
Reference: PRC 00B6
Revision: 0
Page: 30 of 31
This document is proprietary to V
TECH
E
NGINEERING
C
ANADA
L
TD
.
Specifications are preliminary and are subject to change without notice.
21146
6.5
Radio Specifications
Specifications marked with * are guaranteed at the nominal testing temperature and voltage on
all units with the use of automated production test equipment (ATE)
Parameter
Min
Typ
Max
Units
Number of RF Duplex Channels
1
10
-
Duplex Frequency
22.75
MHz
RF Channel Spacing
300
kHz
RF Bandwidth
2
150
kHz
IF Frequency
10.70
MHz
Base Unit Transmission Frequency
902.3
0
905.0
0
MHz
Headset Transmission Frequency
925.0
5
927.7
5
MHz
Transmitter Frequency Stability (over temperature
range)
-10
+10
kHz
*
Base FSK Peak Deviation - Data
40
50
60
kHz
*
Headset FSK Peak Deviation - Data
40
50
60
kHz
*
Receiver Sensitivity - 30dB SINAD
3
-105
-106
dBm
Adjacent Channel Rejection
4
55
dB
Image Rejection
4
65
dB
*
Clear Channel Detection Level
-100
-80
dBm
Notes:
1. A duplex channel includes 1 base to handset link and 1 handset to base link
2. 3dB bandwidth of IF filter
3. Measured through a CCITT audio weighting filter
4. RF level of desired signal set to provide 25dB SINAD (CCITT); rejection is
relative level of interference signal above desired signal to reduce SINAD to 20dB
(CCITT)