Harleyflyer

My Feedback: (9)

Danny,

I just received my X9303 2.4 radio which I purchased with an additional satellite receiver (2 satellites total) and I have a question....actually a couple. I have read some posts about the system reboot issue if the voltage drops too low and I just want to make sure that my setup makes sense for this system.

I have planned my setup on a 35% SD Models Yak 54 as follows:

DA 100
3 Fromeco 2600 Lithium Ions (2 for receiver and 1 for ignition)
3 Fromeco Regulators
3 JR Heavy Duty Switches
8 Hitec 5955 servos
2 standard servos (1 for throttle and 1 for choke)
2.4 main receiver with 2 satellite receivers

Will this setup work well enough to avoid the system reboot issue assuming that I would check for sufficient voltage before every flight? Also, I noticed the antenna on my X9303 bends to the right so that it is parallel with the ground. Is this normal or does it need to be moved so it bends straight up? I had noticed in a picture of Quique Somenzini I saw the antenna on his X9303 bent so it was straight up.

Thanks in advance,
Keith

dsnyder

That sounds ok, however it is not a lot of mah for the receiver for the type of model, so flights per charge may not be very high, just keep an eye on battery voltage between flights.

The antenna folds 90 degrees and rotates around 180 degrees.

Harleyflyer

My Feedback: (9)

Thanks Danny! I really appreciate your response!

I do have another question. My plan is to purchase the spektrum flight log so I can have a way to evaluate my setup with the number of fades, holds, etc. Are you aware of any benchmarking statistics or information so that I have something to help me evaluate the flight log numbers that I get from my flights as to whether my setup is acceptable or not acceptable? I'm just not sure how I will know if my setup is good or not without something to compare to.

Thanks in advance,
Keith

dsnyder

The manual for the X9303 has information for this on page G-22 and G-23.

While the above Standard Range Testing procedure is
recommended for most sport aircraft, for sophisticated
aircraft that contain significant amounts of conductive/
reflective materials (i.e. turbine-powered jets, some types
of scale aircraft, aircraft with carbon fuselages, etc.) the
following advanced range check will confirm that all
internal and remote receivers are operating optimally and
that the installation (position of the receivers) is optimized
for the specific aircraft. This Advanced Range Check
allows the RF performance of each individual internal
and remote receiver to be evaluated and to optimize the
locations of each individual remote receiver.
Advanced Range Testing the X9303 2.4
1. Plug a flight log (optional) into the data port in the JR
R921 receiver and turn on the system (transmitter and
receiver).
2. Advance the Flight Log until F- frame losses are
displayed, by pressing the button on the flight log.
3. Have a helper hold your aircraft while he observes the
Flight Log data.
4. Standing 30 paces away from the model, face the
model with the transmitter in your normal flying
position and depress and hold the bind button on the
back of the transmitter. This causes reduced power
output from the transmitter.
5. Have your helper position the model in various
orientations (nose up, nose down, nose toward the
transmitter, nose away from the transmitter, etc.)
while your helper is watching the Flight Log, noting
any correlation between the aircraft’s orientation and
Frame Losses. Do this for 1 minute. The timer on
the X9303 can be used here. For giant-scale aircraft,
it’s recommended that the airplane be tipped up on
its nose and rotated 360 degrees for one minute,
then record the data. Next place the airplane on its
wheels and do a second test, rotating the aircraft in all
directions for one minute.
6. After one minute, release the bind button. A successful
range check will have recorded zero frame losses.
Scrolling the Flight Log through the Antenna fades
(A, B, L, R) allow you to evaluate the performance
of each receiver. Antenna fades should be relatively
uniform. If a specific antenna is experiencing a high
degree of fades, then that antenna should be moved
to a different location.
7. A successful Advanced test will yield the following:
H- 0 holds
F- 0 frame losses
A, B, R, L- Antenna fades will typically be less than 100.
It’s important to compare the relative antenna fades and
if a particular receiver has a significantly higher antenna
fades (2 to 3X), then the test should be redone, and if
the same results occur, move the offending receiver to a
different location.
Advanced Range Testing Using a Flight Log
G-23
The Flight Log is compatible with JR R921 receivers. The
Flight Log displays overall RF link performance as well
as the individual internal and external receiver link data.
Additionally it displays receiver voltage.
Using the Flight Log
After a flight and before turning off the receiver or
transmitter, plug the Flight Log into the Data port on the
JR R921 receiver. The screen will automatically display
voltage i.e. 6v2= 6.2 volts.
Note: When the voltage reaches 4.8 volts or less,
the screen will flash indicating low voltage.
Press the button to display the following information:
A - Antenna fades on internal antenna A
B - Antenna fades on internal antenna B
L - Antenna fades on the left external antenna
R - Antenna fades on the right external antenna
F - Frame loss
H - Holds
Antenna fades—represents the loss of a bit of information
on that specific antenna.
Typically it’s normal to have as many as 50 to 100 antenna
fades during a flight.
If any single antenna experiences over 500 fades in a
single flight, the antenna should be repositioned in the
aircraft to optimize the RF link.
Frame loss—represents simultaneous antenna fades
on all attached receivers. If the RF link is performing
optimally, frame losses per flight should be less that 20.
A hold occurs when 45 continuous (one right after the
other) frame losses occur.
This takes about one second. If a hold occurs during a
flight, it’s important to re-evaluate the system, moving the
antennas to different locations and/or checking to be sure
the transmitter and receivers are all working correctly.
Note: A servo extension can be used to allow the
Flight Log to more conveniently be plugged in without
having to remove the aircraft’s hatch or canopy. On
some models, the Flight Log can be plugged in,
attached and left on the model using double-sided
tape. This is common with helicopters, mounting the
Flight Log conveniently to the side frame.

Harleyflyer

My Feedback: (9)

Obviously, I have not spent enough time with the manual yet but thanks a bunch Danny for pointing me to exactly where I need to go!