Hi All
We had every sort of problem you can imagine with both Terra Transceiver and
Terra Transponder over a couple of years. In the end we concluded that the
equipment was C**p and insisted on a refund. After some discussion!! this
was received and we purchased an Icom Transceiver and a Garmin Transponder,
installed them and have had no further problem.
Having spent thirty years in the electrical industry, TV, Hi Fi, Video,
Satellite Rx etc, I can only say that quality control as poor as that of the
aforementioned equipment would have put most of the manufacturers, with whom
I dealt, out of business.
Were it not for the fact that it is manufactured for "Aviation", it would
cost half the price and be twice as good.
Well that's made me feel better!!.
Best wishes to you all
Mike Cater
G-BVOW #84
----- Original Message -----
From: Alan Stewart <alan.stewart@blueyonder.co.uk>
Subject: Unreliable Terra TX760 transceivers.
>
> The following is a response I received from Trimble, regarding
> intermittent problems with the Terra 760D tranceiver installed in
> my Europa.
>
> It may be of some relevance to all of you with Terra kit in composite
> aeroplanes. It does support a previously aired theory, and there is
> indeed a section in the installation manual, as the respondant states.
>
> My regret is that I wish I had known this before purchasing the equipment.
>
> Perhaps it offers some hope though, if someone can figure a way to fit a
> 42inch ground plane inside the fuselage.
>
> Perhaps, I should have bought an AWACS !
>
> Alan
>
>
> cc:
>
>
> Subject: RE: Unreliable Terra TX760 transceiver.
>
>
> Mr. Stewart
> Unfortunately without an adequate ground plane the 760 will not work,
hence
> your "aircraft orientation" symptoms, this is due to loss of omni due to
> lack of a ground plane.
>
> As stated in the 760 install manual paragraph 2.3.3, "a minimum of a 42'
> diameter circle with the antenna at center" is required.
> Also the base of the antenna must be bonded to the ground plane.
>
> There may also be leakage at the coaxial connections, the coax connection
at
> the rear of the 760 mounting tray and at the antenna should have a minimum
> of dielectric exposed, too much exposed dielectric and the RF energy will
> short to the coax shield and thus you have no transmission range and your
> audio will sound weak and garbled to the tower or receiving station.
>
>
> Regards,
> Tech. Support
> EMAIL: aerospace_techsupport@trimble.com
> > .
> >
> >
> >
> > -----Original Message-----
> > From: Alan Stewart [SMTP:Alan.Stewart@marconi.com]
> > <mailto:[SMTP:Alan.Stewart@marconi.com]>
> > Subject: Unreliable Terra TX760 transceiver.
> >
> >
> >
> > Dear Sir/Madam,
> >
> > I own and operate a Terra TX760 tranceiver in my Europa composite
kitplane
> > here in the United Kingdom.
> > The Terra Radio is unreliable on transmit. Sometimes I can transmit up
to
> > 30 miles or more, on other occasions, selected destinations have
> > difficultly picking up my transmissions from less that 100 yards ! Often
> > this improves dramatically when the aircraft orientation changes. The
> > destinations are frequently high quality airway radio equipment. (e.g.
> > London Information)
> > The equipment is useable, but unreliable. I know of many others with
> > similar problems with their Terra equipment.
> > Do you offer a solution to this problem ? I am aware that because my
> > aircraft is plastic, it is difficult to offer a wide 'ground plane' for
> > the antenna.
> > However, my wide band Icom A20 handheld transceiver does not suffer any
> > problems
> > !
> >
> > Thanks in advance for any service solutions you may offer.
> > Regards,
> > Alan Stewart
> >
>
>
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