You're good. Use it with confidence.
Darwin N. Barrie
Chandler AZ
----- Original Message -----
From: "Ron Quintana" <[EMAIL PROTECTED]>
To: "RCSE" <Soaring@airage.com>
Sent: Sunday, August 28, 2005 1:12 AM
Subject: [RCSE] Futaba Synthesizer
Tower Hobby claims it will work for 7 and 8 series also, on the web.
Am I really on the FCC's most wanted list? BTW work fine on at least
channels 20 and 30.
Ron
Doug McLaren wrote:
On Fri, Aug 26, 2005 at 03:39:48PM -0800, ron wrote:
| Just bought one of the new Futaba Synthesizer for my Super 8
| transmitter. Someone told me that there units use additiontal power
| from the battery pack and it would be a good idea to upgrade my pack.
| They do seem to generate more heat than a standard module.
I measured the power consumption of my transmitter with various
modules, with the antenna up and down, a little while back. Results
are here --
http://groups.google.com/group/rec.models.rc.air/msg/5a0063936df977d3
As a quick summary, it seems to use about 30% more power with the
synthesized module as it does with a standard module. At least in my
tests. I've heard reports that the difference seen by others is much
larger, but I'm just reporting what I measured. I used an accurate
multimeter to measure the current draw, and have no reason to expect
it to be inaccurate.
You don't need to upgrade your battery pack, but as suggested, you'll
like the results if you do, no matter what module you use.
Another thing to consider -- the instructions for the TP-FSM say this:
This RF module has been exclusively designed for use in transmitter
model T9C. Operation in any other transmitter is not authorized and
could void the user's authority to integrate the equipment.
Only OEM integrators are authorized to install this RF module.
It looks like it's only been certified for use with the 9C, though I
don't doubt it works fine with the 8U and other transmitters. (And I
don't know what that `OEM integrators' bit means. Do end users
qualify?)
I tried to find something more on the FCC site,
https://gullfoss2.fcc.gov/prod/oet/cf/eas/reports/GenericSearch.cfm
(The FCC ID is AZP TP-FSM-72)
and it looks like they only tested with the 9C. So I guess that
techincally it's illegal to use this module with an 8U or older
transmitter. (It may also be technically illegal to use it with the
9CS, though that would be absurd.)
(Of course, the FCC stuff is as clear as mud, so I could be wrong
about that. And of course, in practice I doubt anybody will actually
care, unless there's some sort of ... incident ... and the lawyers
looking for people to sue.)
Another interesting thing is that the tests show about 0.210 watts of
emitted power -- a good deal lower than the legal limit of 0.750
watts. Not that this is really enough of a difference to really be
signifigant, but I'm surprised that it's not closer to the limit. (Of
course, I haven't looked up the other modules and transmitters to
compare.)
Ok, enough rambling.
--
Once I finally figured out all of life's answers, they changed the
questions.
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