David VanHorn wrote:

>>> RF digital also does certified modules.
>>
>> Yes, I've seen them. At 48 mm x 28 mm, they are bigger than I can afford,
>> and also the 18 mA the transmitter consumes is quite hefty compared to
>> others -- but it's still lower than the MaxStream module's. These are so
>> far my only two certified options.
> 
> They have smaller ones. Give them a call.

I just did -- their recorded message says that all they have is on the
site. Sent them a msg... we'll see.

>> What's the usual battery type for this sort of load (10-20 mA for a few ms
>> at a time)?
> 
> A 123 cell would do nicely

If it weren't that big :)  I'm actually thinking of something like a
keyfob, just still smaller (and in a different case). Such a battery would
be a hefty chunk in comparison.


Talking about keyfobs: How come these guys don't need an FCC certification
for their transmitters? <http://www.hobbyengineering.com/H1746.html>

Shouldn't such a transmitter have an FCC cert? I'm just wondering... if
they can sell it (presumably legally) without a certification, why can't I?
What's the requirement?

Thanks,
Gerhard

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