[NSRCA-discussion] Futaba FASST System

[John Pavlick]

That makes sense. The only problem is you can't assign this code yourself 
even if you could see what it is and you DID find that it was re-set to 
0000. Not a good thing. Kinda defeats the whole purpose of using 2.4GHz in 
the first place. Another brilliant accomplishment for "Dr. Murphy"!

John Pavlick
http://www.idseng.com

----- Original Message ----- 
From: "Chad Northeast" <chad at f3acanada.org>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, January 27, 2008 11:11 AM
Subject: Re: [NSRCA-discussion] Futaba FASST System


> On the 14 (and I think the 12) the code is in the TX not the module, and
> is I think visible to the user, but I am not sure where.
>
> On the TM-7 (and probably TM-8) the code is in the module which is where
> the problems occur as you have no way of identifying you have a default
> code.  Then you re-bind your rx and now its default as well....so anyone
> that has a default code can now shoot you down.
>
> I don't believe there is a guarantee that you will reset the code by
> re-booting your tx within 5 seconds...but the fact you cannot see if a
> problem was caused is the reason for the precaution.  I think anyone who
> has to re-bind a rx that has already been bound, should have a few ??
> dancing through their head and send the system in to ensure its
> operating properly.
>
> Chad
>
> John Pavlick wrote:
>> Ron,
>>  Great question. One way to find out would be to find someone who has
>> screwed up their FASST system Tx (re-initialized the ID to 0000) and see 
>> if
>> your Tx controls their Rx too. I'm thinking that the ID that we're 
>> concerned
>> about is stored in the FASST module NOT the Tx itself though. Think about
>> it. You can put a FASST module in a 9Z. When the 9Z came out, 2.4GHz was
>> only popular in car radios. It's very unlikely that the 9Z has a unique 
>> ID
>> assigned to each Tx. I could be wrong but I bet the ID is embedded in the
>> module NOT the Tx itself. One way to verify this would be to take 2
>> identical FASST systems that are working correctly (i.e. each one 
>> controls
>> it's own Rx) and swap Tx modules. If they now control the "other" Rx then
>> the ID  is embedded in the module.
>>
>> Unfortunately you still can't verify that your module / Tx / whatever has
>> not been re-set to ID 0000 unless you have a known "bad" system. What a
>> bummer. The ID should be completely non-volatile, not stored in EEPROM or
>> Flash. I guess Futaba doesn't use Maxim / Dallas ID chips.
>>
>> John Pavlick
>> http://www.idseng.com
>>
>> ----- Original Message ----- 
>> From: "Ron Van Putte" <vanputte at cox.net>
>> To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
>> Cc: "Mel Duval" <duvalj at cox.net>
>> Sent: Sunday, January 27, 2008 10:29 AM
>> Subject: [NSRCA-discussion] Futaba FASST System
>>
>>
>>
>>>  I've been thinking about the problem that occurs with the Futaba
>>> FASST system when the owner turns on the transmitter and turns it off
>>> within the 5 second "boot up" period.  Namely, that the transmitter's
>>> code defaults to 0000 and the owner must rebind the receiver to the
>>> new transmitter code.  However, EVERYONE who does this now has a 0000
>>> "unique" code in their FASST system and can control other airplanes
>>> with the same code.
>>>
>>> I wonder what happens  to the ordinary transmitters with a new FASST
>>> system module plugged in.  Do non-FASST transmitters also have this
>>> code and, if I've turned on my transmitter and turned it off within
>>> the 5 second "boot up" period, has my transmitter gone to the default
>>> code?  I know I've done this with my transmitter and I'm sure I'm not
>>> the only one.  For example, I decide to do some transmitter
>>> programming and turn on my transmitter.  Then I decide to go to the
>>> mode in which my transmitter's RF section is not transmitting, so I
>>> shut it off and go to the "no RF" mode, all within 5 seconds.  Did I
>>> just make my transmitter's code default to 0000?
>>>
>>> This could be really bad if the situation I described is true.
>>> Please tell me it isn't like this.
>>>
>>> BTW, check out this url:  http://www.rcgroups.com/forums/
>>> showthread.php?t=807785#post9017413
>>> The thread involves modeler's experiences of testing their FASST
>>> systems at local hobby shops with Futaba's "FASST test station".
>>>
>>> Ron Van Putte
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>>>
>>
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