Product Details
With traditional technology, a micro receiver has lower sensitivity (control distance) than a full-sized receiver. HDX Digital receivers use a state-of-the-art receiver chip, careful filtration, and DSP technology to achieve full-range while remaining small and lightweight. With this combination, the HDX Digital receivers have capabilities usually only found in older technology receivers weighing several dozen grams. Because of their light weight, the HDX Digital receivers can be used in many applications including indoor electric aircraft, 3D fixed-wing airplanes, and outdoor glow planes of several kilograms or pounds. With a sensitivity of better than 2µV, the HDX Digital receivers have a full range. These receivers use dual tuned RF circuitry with dual ceramic IF filters which ensure an ultra narrow selectivity to more effectively reject adjacent channel interference. This is especially important when flying high traffic areas where many transmitters may be operating near each other.
HD820 is the lightest (only 9.5g) 6-channel, full range, and ultra narrowband Dual Conversion receiver. Decoded by the onboard microprocessor, the resolution reaches 1024 in order to adapt to the tightest dead band of the digital servo and accurate servo (usually 1μs only). Compared with Single Conversion receiver, Dual Conversion receiver can reject the mirror frequency more effectively if they have the same components and use the same DSP algorithm. Thus, it gets more reliability. For adjacent channel interrupt (with the transmitters of channe50, 51, 52, 53 working together, and not far way form them), HD620 can reject it more effectively. According to the understanding the modern electronic industry of HDX, the size and weight of HD820 are the smallest. Special design of the full range and full performance can let you install it on most of the 3D CCPM helicopters, 3D fix-wing plane, and park flyer easily, as well as the glider, the large-scale glow plane. In addition, HD820 can deal with the busy flight situation, and guarantee the safety of the fly.
Note: Channels may be reversed due to label sticker being reversed. If receiver seems to not work properly, try the opposite channel - i.e. Ch #8 is Ch. #1, Ch #7 is Ch #2, and so on.
Specifications:
| Size |
1.4”x0.85”x0.3”(35x21.5x7.8mm) |
| Weight |
0.29oz/8.4g(with shrink wrap) |
| Sensitivity |
about 2.0μV |
| Selectivity |
±8kHz at 65dB down |
| Number of channels |
1-8 |
| Filtering |
Dual turned RF circuitry |
| Filtering |
Dual 4 element ceramic filter |
| Filtering |
DSP filtering in MCU with mild algorithm |
| Shift polarity |
positive or negative (auto-detect) |
| Modulate |
FM/PPM(pulse position modulation) |
| Case |
Shrink wrap |
| Operating Voltage |
4.8V~6.0VDC |
| Operating Current |
11mA |
Works with Hitec crystals
