The M8 advertises the full compliment of features, I doubt legally one way or the other there is a need to keep such an important detail (which leads towards safety) would be intentionally left off the spec sheet.
For the record...I unwittingly performed a similar stunt as you 7-8 years ago. I had landed my G-202 and taxied back to the the pits and leaned the TX against the wing LE. I put a propulsion battery in my hotliner, walked out to the flightline, and launched.
I had a couple of hits during the flight, which was unusual. After landing and walking back to the pits I noticed I left my G-202's TX on with the antenna extended.
It was a Stylus, the hotliner was on a Vision, and both are on the same frequency. What helped contribute to the lack of an incident was that both were communicating using FM/PCM (OEM RX's).
After realizing my good fortune I began analyzing the glitches I had encountered. Near as I can figure the flight path to the side of me put the offending TX in a physical position to interfere.
Since then I have repeated the same chain of events, but deliberately. Suffice to say that you do not require a "smart RX" to allow unfettered flight while an offending TX sits idle and operating. In fact, the more difference between the two TX's, the easier it is to duplicate this seemingly impossible feat...with regular RX's ;^)
However, to give some creedence to the new crop of RX's that utilize uprocessor-based algorythms to actively respond only (as best a possible) to it's programmed TX, every little bit helps...
[EMAIL PROTECTED] wrote:
In a message dated 3/31/2005 11:19:18 PM Eastern Standard Time, [EMAIL PROTECTED] writes:
This indicates that it does have the smarts I eluded to, to decipher the unique signature of a specific TX. Do you know for sure? The manual makes no mention...
I have been using this technology for nearly three years. Primarily in my DGL models where the Berg Postage Stamp 4 fits quite nicely. Some of you may remember a half time demo three years ago where one of my models was attempted to be controlled by an interloping transmitter. I admit that the geometry was favorable to the Berg receiver in that Arthur was on the field and the rogue transmitter was next to me at the scoring tent. We tried the turn off the primary transmitter trick, but the rogue transmitter could not gain control. Control could only be given to the rogue by turning off the receiver and turning it on with only the rogue operating.
Now to the S 3. Similar test were conducted, but on the ground not in the air. The first tests were done with a Vision on CH 31 as the primary and a Stylus on channel 31 as the rogue. A user defined fail safe mode that used an exaggerated rudder deflection for easy identification. The results were quite predictable. When the rogue was less distance than the primary, the servos slowed and then at about half the range, the receiver shifted to the fail safe more. With the primary transmitter off, the rogue was unable to gain control of the receiver, regardless of range. Turning the primary transmitter on always restored control as long as the distance requirement was met.
The tests were repeated with 2 Stylus's and 2 Visions with identical results. Tests were not done using Futaba or JR transmitters because this crotchety septuagenarian does not like flight mode switches and backward transmitter charging jacks
I would imagine the manufacturer of the S 3 receiver does not mention this capability explicitly for liability reasons. If they even mentioned two transmitters on the same frequency, someone would crash and the battle would be on. Of course your mileage may vary, but the S 3 looks like a solid piece of equipment. And further I have no relationship, other than customer, with Kennedy, Sombra or Berg.
Don Richmond
San Diego, CA (Virginia Beach, VA today)
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
hilaunch.com
-- Simon Van Leeuwen RADIUS SYSTEMS PnP SYSTEMS - The E-Harness of Choice Cogito Ergo Zooom
RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
