RD820 Dual Conv. 8CH Receiver 35Mhz

NO BACKORDERS FOR THIS ITEM
This item is end-of-stock. We will not be restocking this item. Instead we will be stocking the Synthesized model.
Please do not backorder this item.

RD820 is the lightest (only 9.5g) 8-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 1ìs 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), RD680 can reject it more effectively. According to the understanding the modern electronic industry of CORONA, the size and weight of RD820 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, RD820 can deal with the busy flight situation, and guarantee the safety of the fly.
See the RD 680 User Guide for more details.

Size	1.4”x0.85”x0.3”(35x21.5x7.8mm)
Weight	0.29oz/8.4g(with shrink wrap)
Sensitivity	about 2.0ìV
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

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Mike Nolan | Verified Buyer

Overall
Quality
Value

RD820 Dual Conv. 8CH Receiver

Nov 14, 2007

Have two of these, used on different channels (63 & 74)and have used them at a field where single conversion receivers regularly glitch, with no issues after about 20 flights. Rating would be 5 star except for Xtal location effectively increasing size of Rx and apparently poor Xtal availabilty.

Anatoliy Lukaschuk | Verified Buyer

Overall
Quality
Value

RD820 Dual Conv

Nov 14, 2007

good receiver for this prise

Miran Kos | Verified Buyer

Overall
Quality
Value

RD 820 receiver

Nov 14, 2007

small DS receiver for litle price.

4 stars, because quartz vertical position.

Leif Simmons | Verified Buyer

Overall
Quality
Value

Tested: RD820 Dual Conv. 8CH R

Nov 14, 2007

I bought two of these receivers togheter with crystals and had one set sent to Thomas Scherrer for testing. He found two potential issues with it:

1) A transmitter on any channel (61-80) can cause blocking if it is really close (less than 5m).

2) Although it is a dual conversion receiver, it has receives also on a mirror frequency of 38.1 MHz (if using 35.1 MHz crystal).

For further details, see:

http://www.webx.dk/rc/RX-measurements/Corona-RD820-DS/CoronaRD820.htm

Thomas has also tested a lot of other receivers. The results are available on-line at:

http://www.webx.dk/rc/RX-measurements/komplet-listen.htm

Leif Simmons | Verified Buyer

Overall
Quality
Value

Tested: RD820 Dual Conv. 8CH R

Nov 14, 2007

I bought two of these receivers togheter with crystals and had one set sent to Thomas Scherrer for testing. He found two potential issues with it:

1) A transmitter on any channel (61-80) can cause blocking if it is really close (less than 5m).

2) Although it is a dual conversion receiver, it has receives also on a mirror frequency of 38.1 MHz (if using 35.1 MHz crystal).

For further details, see:

http://www.webx.dk/rc/RX-measurements/Corona-RD820-DS/CoronaRD820.htm

Thomas has also tested a lot of other receivers. The results are available on-line at:

http://www.webx.dk/rc/RX-measurements/komplet-listen.htm

Javier Esnaola | Verified Buyer

Overall
Quality
Value

magnfico receptor

Nov 14, 2007

Magnfico receptor, muy ligero y fiable 100%.

Lo recomiendo en veleros con motor elctrico. Nunca he tenido interferencias con la electrnica (motor-variador-batera) ni prdida de seal a distancias considerables (300-400 mts.)

glenn gundersen | Verified Buyer

Overall
Quality
Value

RD820

Nov 14, 2007

This is a great receiver! Too bad they dont have it in stock more often! The only

weakness is that the antenna exit is sharp

and will destroy the antenna unless you attend to it.

Markus | Verified Buyer

Overall
Quality
Value

RD820 RX

Nov 14, 2007

Version in 35 MHz wurde samt original Quarz geordert. Empfnger arbeitet einwandfrei und ist fr einen 8 Kanal Doppelsuper uerst klein!

Tomas Cihelka | Verified Buyer

Overall
Quality
Value

2nd generation - good news for

Nov 14, 2007

I have bought and tested three new RD820II receivers and I am happy to say that minor problems with channel 1 output are gone (see my review for RD820 above). I have tested several ESCs without any problem - JETI SPIN, JETI JES, HXT 18 and 36, Towerpro 18.

Burghard Raetsch | Verified Buyer

Overall
Quality
Value

RD820 Dual Conv. 8CH Receiver

Nov 14, 2007

I just bought 3 of this receiver. Absoluty no problems and full range.

I will like to buy more of them!!

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