We will now change the conventional glue stick antenna brass soft antenna・ after several flight tests・ the received signal better from up to one kilometer・ the biggest feature is the antenna can be arbitrarily folded up easier installation.<br />Smaller and lighter. It can be placed inside the casing・ also can be tied in the machine arm.<br />3DR fully compatible design data transmission module. Air module (serial) for aircraft equipped.<br />Ground module (USB interface) is used to connect the computer to use the ground.<br />Two frequencies・ selectable 433MHz and 915MHz・ the majority of domestic users with 433MHz・ there is no distinction between good and bad or the distance on a different frequency.<br />Transmission distance has no standard・ do not in order to determine the quality of products・ standard 2.5dbi antenna + default parameter (adjust transmit power only to the highest) of the cases only a maximum of 1000 meters・ for increasing the transmission distance・ please use the amplifier・ we do not provide any support for this.<br />Case of default parameters・ transmit power is only 11・ a very short distance is a normal phenomenon・ adjust yourself.<br />Any two modules in the case of wireless docking・ can work together through a dedicated ground station setup tool or APM (Mission Planner) to adjust the reference (or update the firmware).<br />If the configuration problem・ the case of two modules can not be docked・ but also need to set the Air module separately・ because Air module only TTL level serial port・ so we need a separate connection to FTDI tool operation.<br /><br />915m frequency antenna support equipment modules.<br /><br />Specifications:<br />Name: 800m-960m antenna<br />Gain is defined: 3DB (Typical)<br />Band is defined: 800 - 960 MHz<br />Overall Length: 15cm<br />Wire: RF1.13<br />Weight:<br />Air: 10g(including Cable and Antenna)<br />Ground: 11g(including Cable and Antenna)<br /><br />    Specifications<br />General<br />	 Type: Antenna                                                	<br />Dimension and Weight<br />	 Package weight: 0.06 kg                                                  <br />                        Product size (L x W x H) : 12 x 8 x 0.5 cm / 4.72 x 3.14 x 0.20 inches                                                  <br />                        Package size (L x W x H): 13 x 9 x 1 cm / 5.11 x 3.54 x 0.39 inches                                                	<br />Package Contents<br />	 Package Contents : 2 x Soft Antenna                                                	<br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br /><br />                       Product Safety Disclaimer: <br />We do not accept any responsibility or liability for misuse of this or any other product.  All our products are extensively tested to comply with rigorous and strict QC standards.  For certain products (e.g. toys・ knives・ etc.)・ we recommend proper supervision as we cannot be held liable for misuse or accidents.<br /><br />  Disclaimer: <br />We do not accept any responsibility or liability for the incorrect purchase of our products.  All of the products on the website are extensively tested to comply with rigorous and strict QC standards.  For all of our clothing products・ items and accessories・ please take careful note of the precise measurements・ mainly shown in centimeters (CM).  As part of our company policy・ we will not be able to accept returns or provide refunds for items which are the wrong size.<br /><br />                                                <br />