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Old Aug 13, 2013, 09:02 AM
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FrSky D4R-II 4ch RX (FOR DLG)

The FrSky D4R-II 4ch Receiver (w/telemetry) looks like a good Rx for DLG.

Has any one used one yet?

What are so of your thoughts RCG.

Compatibility:
Compatible with FrSky two-way telemetry modules: DFT, DJT, DHT, DHT-U


Features:
• RSSI (PWM) and CPPM output.
• Lighter weight and physically smaller than D8R-II & D6FR
• Integrated warning alarm for low voltage, poor reception, etc.
• One external analog telemetry port and one digital data-stream port (Connects to FrSky Sensor Hub FSH-01).


Specs:
Number of Channels: 4
Operating Voltage Range: 3.5V~10V
Operating Current: 60mA
Operating Range: Full Range (>1.5km)
Dimension: 40x22.5x6mm
Weight: 5.8g

(D4R-II and vario set up on page 5 & 8)
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Old Aug 13, 2013, 09:16 AM
Chuck 'Em and Chase 'Em
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United States, NY, Plainview
Joined Aug 2005
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Have one in my CX2. I have had it pretty far but since that plane costs an arm and a leg, it wasn't to speck height but definitely very high.

I mounted my antennas out the sides at a 45 deg to the fuse.

When I had it out the top and bottom, I was getting an occassional beep. not sure if that was to indicate a frame loss for the telemetry or if it was out of range alarm. With it out the sides, I have no beeps and had no problem flying a 5 min task in a contest.

Draws about 140mAh at idle so make sure you have a good size battery and charge often. The digitals I have in the CX2 work fine. My equipment is not that good so the draw is approximate. For a non telemetry, it indicated a draw of 110mAh idle. Haven't had much issue with running out but I am always putting it on charge at contests and change batteries when I have flown 45 mins or so or when the voltage is about 4.9 or less.

There have been reports of Jr digital (not analog) servos jittering with telemetry receivers.

I have the heads up display , FLD-02, andit is great seeing the RSSI and volage in my receiver. I am still using the default 400mAh pack that comes with the CX2. I get at least 45 mins on a pack but I would be careful and verify in your system how much time you get.

So far it has been good.

Frank
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Old Aug 13, 2013, 09:44 AM
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Congress, AZ
Joined Sep 2001
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My friend has that rcvr installed and has flown a full contest, with no apparent problems. I'll see if I can find out how frequently he charged and what battery was used.

FrSky telemetry receivers do cause Jr 285 and similar JR digital servos to chatter or buzz. I don't know of anyone identifying any other servos that have problems. I conclude it's a problem with the servos. Jr non digital servos are fine, as are Ion DS57 digital servos.

There are a couple of threads discussing this.

Gary
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Last edited by GaryO; Aug 13, 2013 at 09:53 AM.
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Old Aug 13, 2013, 11:06 AM
It's GoTime all the Time
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I plan to use a 1s 1200 mah nanoteck with Ds09
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Old Aug 13, 2013, 01:56 PM
Hey, Watch this....
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United States, UT, Alpine
Joined Mar 2010
429 Posts
I use this receiver in my DLG and have no issues with it. I also use it in a combat wing and fly in the semi-annual Utah sWARm in which 40+ aircraft are in the air. I have had zero interference.
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Old Aug 14, 2013, 02:35 AM
Graham Kirkland
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Port Alfred South Africa
Joined Jun 2009
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I have a few of these and they are my standard Rx for all my DLG's. Never had any problems and love the telemetry. I use them with JR DS285 and don't notice any more buzzing than is normal with most digital servos.

I have a carbon friendly nose on my fuse and I don't even bother to run the antennas outside the pod. I get an occasional beep for low signal alarm but is has more to do with the orientation of the plane then pure range.

Graham
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Old Aug 19, 2013, 11:30 PM
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(How to power the RX & use four servos when it only has four ports??)
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Old Aug 20, 2013, 02:00 AM
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Tap in to one of servo leads. Something like Y-harness would be in order.
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Old Aug 20, 2013, 08:59 AM
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Australia, SA, Old Noarlunga
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Am considering this for my older Futaba 8u but thought I needed ch5 for flaps (4th aileron servo). Can the channel assignments be changed in the rx (or is it in radio??)
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Old Aug 20, 2013, 09:20 AM
Chuck 'Em and Chase 'Em
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United States, NY, Plainview
Joined Aug 2005
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No. It takes whatever is output from the PPM of the transmitter as for channel assignments. There is no channel reordering within the receiver as far as the instructions indicate.

You may want to look at the D6R instead (6 channel but lacks data port but does give RSSI and A1 voltage)
http://www.frsky-rc.com/product/pro.php?pro_id=23

The 6 isn't that different from the 4


D4R specs:
Dimension
40*22.5*6mm

Weight
5.8g/5g (naked)

Operating Range
full range (>1.5km)

Operating Voltage Range
3.5~10V

Operating Current
60mA

Number of Channels
4ch




D6R specs:
Dimension
42*22*11mm

Weight
7.1g

Operating Range
full range (>1.5km)

Operating Voltage Range
3.5~10V

Operating Current
60mA

Number of Channels
6ch

sorry.

Frank
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Old Aug 21, 2013, 10:05 AM
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Thanks, at least it clears that up, was looking at the 6ch..,
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Old Aug 27, 2013, 11:21 PM
It's GoTime all the Time
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Ok I made the Y-harness. thanks Seba

The D4R-II is sweet in all ways.

I'm useing them in my NEO & my Akcent-2


I plan to do a full range check this weekend if I can finsh the NEO buy Friday.

I also plan to do a test with the antennas under the canopy and then with them out of the canopy to see if range changes at all.
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Old Aug 29, 2013, 03:14 AM
Entropy is happening!
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Channel assignment?

How do you assign the channels for all three axis plus flaps (flaperons)?
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Old Aug 29, 2013, 12:13 PM
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Quote:
Originally Posted by Jim.Thompson View Post
How do you assign the channels for all three axis plus flaps (flaperons)?
Using Taranis it is straight forward. Ch1 - flaperon Ch2 -- flaperon Ch3 elevator, Ch4- rudder.
I'm assuming he's using a taranis.
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Old Aug 29, 2013, 02:05 PM
Entropy is happening!
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Quote:
Originally Posted by mnowell129 View Post
Using Taranis it is straight forward. Ch1 - flaperon Ch2 -- flaperon Ch3 elevator, Ch4- rudder.
I'm assuming he's using a taranis.
I see.
So leaving the throttle stick available for the flaps!

One of the advantages of the open mixing and assigning ability of that tx.
Very good!
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