Hi,
The MicroAir Transponder is very nice and it fits perfectly with the
round 2 1/4 inch 760 COM. Nice pair. Each weights about 500 grams and
easily fits the Europa stack. That is several pounds saved over some of
the square boxes. They use very little power so you can use them in
glide mode as well.
Christoph Both
#223
Wolfville, NS
________________________________
From: owner-europa-list-server@matronics.com on behalf of Rowland Carson
Sent: Fri 8/22/2008 6:42 PM
Subject: Re: Europa-List: Mode S transponders
>As my panel is optimised for a 6.25" wide
>avionics stack the only transponder that seems
>to fit the bill looks to be the Trig TT31
>transponder. Has anyone else looked into this
>yet? If so what conclusions have you come to?
Nigel - my panel is still in a "soft" state so I
don't have your contsraints, but of those I've
looked at under =A32k I am leaning towards the
Filser TRT800 which has the advantage of a
built-in alticoder. Both the Becker
BXP6401-2-(01) and the TRIG TT31 need an external
coder which adds to the cost. The Becker is the
shortest at 205mm and the Filser the lightest at
600g - the Trig is 1350g but puts out 240W
compared to only 100W for the Filser.
Incidentally the Garmin GTX328 while too long for
a Europa panel at 286mm also lacks the extended
squitter needed for ADS-B, so it's theoretically
less future-proof than the others. The Filser is
the only one that provides an active/standby
squawk display like the typical comms radio, and
that's about the only useful feature I see
missing from the TRIG. Filser also do a TRT800A
which seems to be much the same unit as the
TRT800, re-packaged 6.25" wide, so you might
consider that one.
As an electronic engineer, the impresssion I have
of the TRIG and the people who developed it is
that it is well designed and should be a solid
performer, but I have no hard facts or direct
experience to back that up.
I attach a PDF of my comparison sheet - at the
time I prepared it I wasn't able to get anything
about the Becker BXP6403 apart from a new-product
annoucement.
regards
Rowland
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