Module DRA818

Circuite electronice, echipamente home made, aparatura de masura si control, scheme...
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Module DRA818

Mesajde YO9GJX » Sâm Noi 10, 2018 8:46 am

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Link - https://www.sv1afn.com/dra818.html?fbclid=IwAR0trhfo6baBq_MZBw8ep282VXyfcRMTat_CtXApEIQ6Q-u2BfYe_SwUBj4

Caracteristici:


The DRA-818V module is one example, made in China, costs under USD 15.00, take a look at its specs:
Frequency Range: 134~174MHz
Tx/Rx frequency independent, can be the same or at any difference
Channel spacing: 12.5 or 25KHz
Configurable multi-channels
Receiver Sensitivity: -122 dBm
Output power: +27/30dBm (high/low as selected)
CTCSS / CDCSS codes built-in
8 volume levels controlled from the UART interface
8 squelch levels controlled from the UART interface
Simple 9600N81 UART interface to control
Operating Temperature: -20°C ~+70°C
TX current: 450/750mA
Supply voltage: 3.3~4.5V (5V absolute maximum).

Schema:

Imagine

Sunt si pentru UHF - 70cm

Înapoi la “Constructii electronice”

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