Description

integratemote integratemote Recommended New product 144MHz 145MHz 146MHz 154MHz 174MHz VHF HAM Radio Module Amateur Radio DRA818V Product Description: Frequency Range: 134~174MHz - Tx/Rx frequency independent - Channel space: 12.5KHz - Configurable multi-channels - Sensitivity: -122dBm - Output power: +27/30dBm - CTCSS / CDCSS codes - 8 volume levels - 8 squelch levels - UART interface - Temperature: -20°C ~+70°C - TX current: 450/750mA - Supply voltage: 3.3~4.5V DRA818V is a type of compact wireless voice transceiver module based on RFIC RDA1846 and works in VHF band. It integrates high speed microcontroller, high performance wireless transceiver IC, high power PA, audio process and squelching circuits. It provides standard UART interface which users can easily configure appropriate parameters for different applications. Users can easily construct a walkie-talkie system by connecting microphone, audio PA and speaker. Some parameters of DRA818V modules can be changed by following the commands in this section, which provide flexibility for designers to optimize related parameters to achieve the best performance. DRA818V modules use standard UART interface to communicate with microcontrollers or other hosts. The default data format is: 8 data bits, 1 stop bit, no parity and 9600 kbps data rate. DRA818V and DRA818U are based on RDA1846. Comparing to DRA808M based on RDA1845, CDCSS and audio control AT command are added, which provides more flexibility for the users who need to process audio signal more precisely. DRA818V is the VHF band version of DRA818U. From the field testing results, the RFIC on module should automatically filter the frequencies below 300Hz no mater Highpass filter is enabled or not so please pay attention to it if the applications need low frequencies. Package includes: 1PCS 144MHz 145MHz 146MHz 154MHz 174MHz VHF HAM Radio Module Amateur Radio DRA818V About us Payment Shipping Feedback Return Policy Contact Us About us 1.A large number of products for you to choose 2.We have an independent customer service team to quickly answer your questions Payment 1.We accept PayPal payment ONLY, and must be received within 5 days from the date of purchase. 2. It is easy and safe for you to pay by credit cards, debit cards, bank transfers and PayPal account balances. 3.Buyers are responsible for import duties,custom fees and taxes, if any, please check your country. Shipping 1.We only ship to the confirmed address provided by eBay. please make sure your ebay address is 100% matches the address you would like us to ship to. If not, please let us know before we sent you the package, or we will not be responsible for any loss. hope you could understand. 2.Orders will be processed instantly and dispatched within 1-2 business days except hoilday, so we do NOT accept any email/message note after you place orders. 3.All package need to wait 30 days,Please take care it.Less than 30 days,we can't take a refund. Feedback 1.We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help. 2.Please DON'T leave negative or neutral feedback if you haven't received item in 30 days, because we have mentioned the shipping time repeatedly. Return Policy 1.We believe our items are so outstanding. We are convinced you will be happy with your Purchase. 2. If you do not satisfy with our items. Please simply return to us within 30 Days in original condition. Just pay for the returned postage. Then we can issue full refund or resend the item to you after the returned item arrived at our warehouse. 3. Please include your eBay ID and item number with any email requests. Contact Us 1. If you have any questions, please feel free to email our service specialists. 2.Just contact us using the " Ask the seller a question" link on eBay. 3.Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem.