RADIO DT

Our new RDT system makes use of the latest technology, so you, our customer can expect outstanding performance and reliability. We delayed offering an RDT product until we could provide a technologically superior solution for you. We are using State of the Art LoRa (Long Range) modulation that was developed for the new Internet Of Things (IOT). Without going into complicated details, we are providing superior range as well the best in noise rejection. Yes, there are other RDT systems available, but none are as advanced as the Texas Timers. You will be totally pleased with it's phenomenal performance. And, yes, the more sophisticated circuitry does add a small amount of weight. We feel this tiny added weight is well worth it in enhanced performance.

Our hand held transmitter will work with both of the two receiver models we offer. Our Host model is for use with any of the mainstream electronic timers, such as our eMAX. This is the model you want for use in your electric power planes. The Stand Alone model receiver is for the usual rubber power, glider, or gas planes that do not have an electronic timer.

HOST RECEIVER

The Host model receiver listens full time for a signal from our transmitter. It gets its power from your main battery in the electric plane. No added battery is needed. Immediately upon sensing the transmitter signal when the transmitter button is pressed, it sends a pulse to the timer. What happens next is a function of the brand of electronic timer you are using. Our eMAX will immediately stop the motor if it is running, and 1.3 seconds latter, will activate the DT servo to save your plane when things go badly wrong. Note: other brand of timers may require you to press the transmitter button a second time to have a DT. We do not like this second operation that puts an added delay in getting the DT that may save your plane. One press of the button is all it takes with our eMAX timer. If you are in the glide phase of flight, the single press of the button will activate the DT servo immediately. You can see the product HERE

STAND ALONE RECEIVER

The Stand Alone receiver model for use with rubber power, glider, or gas models works a bit differently. Since there is no large battery in your model, we use a separate small and light weight battery to operate the receiver. To allow this small battery to last a long time, we put the receiver to sleep so only a tiny amount of power is needed. We wake up the receiver frequently to check if the transmitter is sending out a signal, and if present, we power up the full receiver and and DT your plane. To allow for the sleep period you must press and hold the transmitter button for up to two seconds or until you see DT happen. Generally, the DT will happen in about one second, but it could be as long as two seconds. Again, we do this so that small battery will last you for up to two days of flying on a full charge. A larger battery would allow us to shorten the DT delay, but at the expense of added weight or reduced battery life. It is a balancing operation. We feel that a delay of up to two seconds is more than acceptable for rubber and glider models. With the Stand Alone receiver, we offer you an optional small battery and a sub micro servo. You are welcome to use a battery and servo of your choosing. Our Stand Alone receiver weighs 2.2 grams. If you use our battery and servo the total weight is 8.6 grams. This includes all wires and connectors. Caution, some places will give you weights that do not include the wires and connectors, even though they are all required for operation. You can see the parts that go in your plane as well as a full system HERE.

USE WITH GAS

Although we did not design the RDT for use on gas models, there is no reason it can no be used as long as the limitations are understood and accounted for. 1) The receiver must not be allowed to get fuel, oil, or water on it. 2) the receiver should be wrapped in foam or Velcroed to prevent it from rattling around inside the fuselage. 3) the receiver requires a 1S battery for operation. We sell a small one that is good for about two days of use. 4) the servo we sell is made for electric, rubber, or gliders, and will not stand up to the conditions of large gas. You must supply your own suitable one. 5) DT is not tied to the engine, and you are capable of triggering DT with the engine running. 6) In order to conserve the small battery life, we put the Stand Alone receiver to sleep and wake it up periodically to check if you are pressing the transmitter button. If you are, we wake up all the electronics and activate the DT servo. If it does not sense you pushing the button, it goes back to sleep. You must hold the button in until you see DT happen. There can be as much as a two second delay between you pressing the button and DT happening. Typical will be about a second.

RDT WITH A CLOCKWORK TIMER FOR GAS

When using RDT with a clock timer, you need a way to tie the timer and the RDT together so you can DT with the timer as well as the RDT. A way is needed to do this. The example shown HERE does just that. There are no doubt other ways but this has proven to work. Take a look at it. Although it says using it with a Texas Timer, all clock timers are pretty similar and should work just fine.

SUMMARY

We offer a 75 mah LiPo battery for use with the Stand Alone receiver. It has a suitable connector on it and we offer two optional chargers. One is used with a conventional LiPo charger that is set for a single cell 1S and not over 100 ma of charge current. The other charger uses a standard USB port on a computer to charge the battery. This USB charger can do two batteries at one time. LEDs show the charge state. Green means done. If you want to supply your own battery, just be aware that you must have a suitable connector on it to fit the Stand Alone receiver and/or the chargers.

A sub micro servo for use with electric as well as rubber or gliders is offered. Or you can provide your own. A standard three pin connector is used.

Our transmitter works with both models of receiver. The code just has to be the same. The transmitter code is found inside the case by removing two small screws.

SYSTEM DESCRIPTIONS

HOST SYSTEM

It includes the transmitter with a unique code, a 240 mah Lipo for the transmitter, a charge cable for the LiPo to use with your LiPo charger, and a Host receiver. This system is for use with electronic timers such as our eMAX but it works with any mainstream electronic timer made for use with an RDT. The system uses the servo already in your electric plane and receiver power comes from the system battery in your plane.

STAND ALONE SYSTEM

This is for use where there is no electronic timer, as in rubber powered models and gliders, or gas. It includes a transmitter with a unique code, a 240 mah LiPo for the transmitter, a charge cable for the LiPo for use with your charger, and a Stand Alone  Receiver. This receiver requires a 1S battery for power and a servo to be added to your plane. We offer a battery with a compatible connector for the receiver and a small servo as used in electric FF. One of the optional 1S batteries has a protection feature that protects against over charging or discharging. We also offer two optional chargers for the small 1S battery used by the Stand Alone Receiver.

OPTIONAL COMPONENTS

 

 DESCRIPTION

QUANTITY

Host RDT System                                          Price: $250.00 ea.
Stand Alone RDT System                            Price: $262.00 ea.
Extra Host Receiver                                       Price: $95.00 ea.
Extra Stand Alone Receiver                         Price: $107.00 ea.
Extra Transmitter                                             Price: $125.00 ea.
Stand Alone 1S 75 mah battery                    Price: $4.00 ea.
Stand Alone 1S 75 mah battery with protection       Price: $4.75 ea.
Extra transmitter Battery 240 mah                            Price: $12.00 ea.
Transmitter Charge Cable                                      Price: $15.00 ea.
Stand Alone USB Charger                                         Price: $9.00 ea.
Stand Alone LiPo Charger cable cable                  Price: $10.00 ea.
Sub Micro Servo                                                      Price: $5.50 ea.