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Radio - Futaba FASST > 12z question

Helinutnz
Elite Veteran
Location: below 42 South

Can anyone tell me if the previous version 12Z g3 transmitter is exactly the same one that is used on 2.4 simply with a module stuck in the back of it or is there a 2.4 specific 12zh radio out there.

I am a JR user and was looking at the 12X. Now i am also looking at the 12Z. Seems to have more programming features.
I need to know if the 2.4 12z (thats what I want) is a different radio with different internals to accomodate 2.4 and if that means you can still use a 72 MHZ module if you want.

My main concern is latency. I don't want a non specific 2.4 radio that has to do a dance around with a 2.4 module to do the job. (like the 9303 72 mhz that you could pop a 2.4 module in and have some features lost that the dedicated 9303 2.4 has)

I know bugger all about futaba these days so unsure of their Fasst system.

cheers for any help.

05-21-2008 05:12 AM

bcm
Heliman
Location: CA

I'm not sure about the latency, but I do know that you can purchase a 72 mhz module for a 12Z, I think I remember Tower Hobbies' tech notes stating that it needed to be purchased directly from their tech department. ( It may not use the generic module that is used in the standard 72mhz system)

05-21-2008 07:07 AM

HOMEPAGE

bbaxter
Heliman
Location: Central Illinois

The Futaba 12Z transmitter is module-based. When you install ANY frequency module, it gets the fastest possible signal coding for the type of modulation. When you install the 2.4 GHz FASST module you get the high-speed processing that the new Futaba transmitters are known for. That's because the module gets the direct digital stream from the processor. It would be exactly the same if the transmitter had a built-in FASST system instead of the module. The only difference would be the location of the circuit board and the antenna.

Modules DO NOT mean slower. On older-design systems, you cannot make them faster by using a new-technology module, but when the transmitter's designed with modern technology, then you have all the improvements and functionality.

People who keep talking about wanting a "native" system just really don't know what they are talking about when you get a system with all modern-designed circuitry, like the new Futaba 12FG, 12Z, 14MZ, and now the new, 10C. They all have vastly-improved processing speeds when compared to older units, and you lose absolutely NOTHING when you go from a conventional-frequency module to a 2.4 GHz FASST module.

05-21-2008 04:51 PM

Helinutnz
Elite Veteran
Location: below 42 South

Quote
People who keep talking about wanting a "native" system just really don't know what they are talking about when you get a system with all modern-designed circuitry, like the new Futaba 12Fg, 12Z, 14MZ, and now the new, 10C.

Excellent. Thanks bbaxter. Thats exactly what I wanted to know and you are right....I certainly didn't know. The Futaba site doesn't seem to make this clear. (Except on the 10C write up) There was a problem with older sets and 2.4 modules but now I know these models you have mentioned have the digital processing and no extra lag from being a module based system versus integrated. This has cleared up that issue for me. (mostly been with JR sets)

I guess also that JR do advertise a 12X 2.4 which is different to the 12X module based system. One has a built in aerial on 2.4 only and doesn't support 72 mhz and the other comes with two modules one on 72 mhz and the other on 2.4 without a receiver and has no difference in latency either.

The 12Z can do both the 2.4 and 72Mhz from the get go but if you get the 2.4 version you have to buy the aerial and a module for the 72mhz capability.

This has answered my question. ( and i think you are with futaba somehow so I guess you know!!!!)

cheers
helinutnz

05-21-2008 05:13 PM

lrogers
Key Veteran
Location: Mobile, Al

I had my first flight with the 12z last Sunday, AWESOME radio and wicked fast. I had to add another 10% expo to "slow" my Hawk down around the hover point.

Programing is "different" (best way to describe it), but once you figure it out, the capabilities are amazing.

Larry Rogers - R/C Helicopter Pilot

05-24-2008 03:09 AM

HOMEPAGE

XLFLYER
Senior Heliman
Location: Denver, Colorado

So the 12Z and 12Z Fast are identical internally what about externally? I saw a photo that looks like the power switch maybe a little different? Can someone who has seen one elaborate if the physical case is the same?

Thanks!

05-24-2008 10:13 PM

lrogers
Key Veteran
Location: Mobile, Al

The picture on the manual is of a 72mhz 12z, aside from the antenna, it looks idential to the 12z FASST. The manual is the same, the Fasst version has some supplemental pages.

Larry Rogers - R/C Helicopter Pilot

05-24-2008 10:30 PM

HOMEPAGE

Helinutnz
Elite Veteran
Location: below 42 South

I have researched it. It's the same radio through and through. There is no 2.4 and different 72 mhz radio. They are one and the same. Simply pop a tm 14 module in and a 6014fs receiver and you have faast 2.4 or a 72 mhz module and screw your optional antenna in and bam...you have 72 mhz. It is a digital signal and the insides are the same. Its the module that determines your output but the signal getting to the module is exactly the same so latency is not the issue in that respect.

So I was mislead a bit as the adverts do not say "dedicated 2.4" but do say 12Z now on 2.4. Which means you buy the module and pop it in.

just see b baxters reply above.....same radio. He's with futaba.

05-25-2008 06:24 AM

rexxigpilot
Senior Heliman
Location: florida

Helinutnz,

I hope you will be as pleased with the 12Z and TM14 module as I am! Just one correction, the latency of the FASST system with the 6014 RX is not quite as low as the 72MHz system using the 5114 PCM RX. Please refer to RR member JKos' thread on latency.

However, having flown the two systems back to back, the FASST appeared to respond faster - more locked in feeling. Probably has to do with the signal strength and error checking in actual fight conditions.

Also, I never had a brownout/lockout or any other problem the FASST. But one concern for those using the 6014 RX with a poorly ventilated airplane in high temp/sunny areas (desert conditions) is thermal shutdown. Apparently, the RX will lock at something around 143° F. Can't confirm this ever happened in the air and certainly not in a heli.

05-25-2008 05:23 PM

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Radio - Futaba FASST > 12z question

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