User Manual

Supply Voltage
minimum 4.8V
maximum 10 V
Absolut maximum rating 12 V DC
Supply current 30 mA
Modulation input see 2
RF – output power 10 dBm +/- 1.5 dB conducted
Frequency accuracy + / - 1.5 KHz
Temperature stability + / - 2.5 KHz - 20°C - + 70°C
Receiver
70RX-M1
Supply Voltage
minimum 4.8V
maximum 10 V
Absolut maximum rating 12 V DC
Supply current 25 mA
RX-bandwith 3 KHz +/- 7.5 KHz (1. IF Filter)
20 KHz (2. IF Filter)
more narrow filters upon request
Audio out Ao + 0.5 Vpp at 2.5 KHz nominal deviation
Ao depends on the frequency offset between TX and RX and may
vary between 1 and 3 V DC.
Output impedance typically 2 KΩ
AFC range + / - 3 KHz
Sensitivity - 121 dBm for 12 dB SINAD CCITT weighted
MUTE signal 0 V with no RF and + 4.5 V at a RF input of typ. – 112 dBm +/- 5 dB
RSSI available upon request instead of MUTE, 0.5 V – 2.5 V / –120 -60 dBm
Maximum RF input level 0 dBm
4. Restrictions
- Do not supply a higher modulation input level to the TX modulation input as specified in 2
- Do not us the 70TXRX-M1 radio modules to transmit audio or voice