Search: Posts Made By: jdb000001
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Replies: 12
Views: 960
Posted By jdb000001

RE: Throttle cut off.

Another thing to check - the throttle cutoff and throttle trim will only work at one end of the throttle stick travel. Make sure the throttle trim is working at the low end of the throttle, and not...
Replies: 14
Views: 1,315
Posted By jdb000001

RE: Throttle arming switch

You can always program a switch to cut the throttle - I've programmed the throttle cut switch on an 8U to actually cut the throttle at any position. Futaba usually has the throttle cut act to lower...
Replies: 2
Views: 527
Posted By jdb000001

RE: PCM RX for Futaba 6EXAP

Will work with any current Futaba PCM1024 receiver.
The number of channels on the receiver can be more than on the transmitter - the extra channels above ch6 will just be unused.
You can only use...
06-06-2007, 05:52 PM
Replies: 8
Views: 721
Posted By jdb000001

RE: Futaba zap

Changing the 9Z over to mode 1 should be loads of fun.
Lots more cables and connectors and pc boards than your average transmitter.
You will also want to check the backup battery while its...
Replies: 34
Views: 3,497
Posted By jdb000001

RE: MAJOR problem with 2.4 system & Rain

Well, I guess there IS a reason all the radio manuals say "Do not fly in the rain".

Nothing is going to be totally 100% reliable under all circumstances - even with a live pilot on board...
Replies: 34
Views: 3,497
Posted By jdb000001

RE: MAJOR problem with 2.4 system & Rain

Should not be too much of a problem while flying - the attenuation in visibility of the aircraft should keep it in very close during a rainfall of that magnitude.
In the case of a rain column...
Replies: 1
Views: 531
Posted By jdb000001

RE: TX power loses!

You could have a broken solder connection at the on/off switch, a bad or corroded connection to the battery, etc.
Does tapping on the radio near the power switch, battery compartment, charge jack,...
05-16-2007, 01:24 PM
Replies: 1
Views: 638
Posted By jdb000001

2.4GHz modules and channel latency

Thought I would ask, since people seem to be so concerned about the latency between channels on 72MHz.

Will the 2.4GHz modules for the modular transmitters be designed to internally store the...
Replies: 8
Views: 1,742
Posted By jdb000001

RE: modify servo to multiple rotations but keep positioning???

You could try the following:

Remove the feedback pot from the servo, mount the servo and drive gearing to drive the rotary table, and drive the feedback pot from the rotary table (either gear...
Replies: 8
Views: 1,742
Posted By jdb000001

RE: modify servo to multiple rotations but keep positioning???

I doubt any existing servo will be accurate enough for that application.
For 10 rotations of 360 degrees, you have a rotation of 3600 degrees, and an accuracy of .1 degree means an accuracy of 1 in...
05-11-2007, 01:35 PM
Replies: 3
Views: 607
Posted By jdb000001

9ZAP on 27/75MHz

Are there any Futaba modules on 27MHz or 75MHz that will work in the 9ZAP transmitter, and is there a synthesized 75MHz module that will work?
Replies: 16
Views: 932
Posted By jdb000001

RE: PCM Question.....

Make sure you get a Futaba PCM receiver - you can't mix brands with PCM, every manufacturer has a different way of encoding the PCM signal.

The 8U series of transmitters is PCM1024, so it will...
Replies: 12
Views: 1,285
Posted By jdb000001

RE: Servo acting weird..need help.

What model receiver and servo are you using? If you are using the Futaba PAR-2S receiver, make sure the sensor gain is set to its lowest point, so the sensor is not driving the servo.

With the...
Replies: 4
Views: 746
Posted By jdb000001

RE: Changing channels

The retuning is for the transmitter. All the receivers are tuned to allow for changing crystals - if you buy a receiver or flight pack, you have to buy the crystal separately. Just make sure the...
Replies: 16
Views: 1,082
Posted By jdb000001

RE: Need a Receiver

The early 6NPK's were PCM512, the later ones were PCM1024 - you need to find someone with a Futaba PCM receiver and test the transmitter - if it is PCM512 it will not work with the current PCM1024...
Replies: 6
Views: 1,269
Posted By jdb000001

RE: Futaba 7C Range Problems

The 7CAP does probably default to PCM when you do a RESET on a model - but you will not actually change the transmitter mode until the radio is switch off and back on. Likewise, if it is set to a...
Replies: 28
Views: 2,595
Posted By jdb000001

RE: Stepper controller interface to receiver?

The stepper motor should have a rating showing the maximum stepping rate for continuous rotation.

You will need to have some type of feedback on the motor position - either switches at the end...
Replies: 11
Views: 10,466
Posted By jdb000001

RE: Futaba T4EXA help

I was just suggesting that the transmitter crystal may have been changed or removed before he bought the radio.

Also, he is in the United Kingdom, not sure what the law is there - the FCC has no...
Replies: 11
Views: 10,466
Posted By jdb000001

RE: Futaba T4EXA help

The manual can be downloaded from http://manuals.hobbico.com/fut/4ex-manual.pdf - this is the link you get if you go to the manuals page at www.futaba-rc.com.
Not much that can cause the servos to...
Replies: 28
Views: 2,595
Posted By jdb000001

RE: Stepper controller interface to receiver?

If the processor has a timer/counter, you can measure the pulse width from the receiver by using it to gate the counter/timer.
You will probably need an A/D input also, so you can use a pot for...
Replies: 11
Views: 827
Posted By jdb000001

RE: radio setup problem

Try the following mix:

Master : RUDD
Slave : AUX2 (channel 8)
Link : OFF (might need to be ON, try it off first)
Trim : OFF
Switch : Any
Position : NULL
Rate : Whatever you need for...
Replies: 3
Views: 734
Posted By jdb000001

RE: How to tell the brand of crystal

Most of the Futaba crystals I have seen will have a type number on them - "Type 72-x" where x can be anything up to 12.
Replies: 9
Views: 828
Posted By jdb000001

RE: Berg receiver with Futaba transmitter. Low channel?

There is a technical reason for the warning. The single conversion receivers mix the received frequency with the crystal frequency to produce a signal at 455KHz. To do this, the crystal frequency...
Replies: 1
Views: 694
Posted By jdb000001

RE: Futaba 7cap-channel 6 problem

Use a programmable mix to mix channel 6 with itself at -100% and the knob will have no affect.
Replies: 10
Views: 2,888
Posted By jdb000001

RE: 72 mhz Frequency chart

Actually, the synthesized transmitter modules are quite accurate in producing the correct output frequency. They have a crystal providing a reference frequency, and the output is automatically...
Showing results 1 to 25 of 145
 


 
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