Transponderz

On Friday, October 26, 2012 1:08:06 PM UTC-7, jfitch wrote:
On Friday, October 26, 2012 9:33:49 AM UTC-7, 3Y wrote:





I put a Trig TT21 in last summer and have been happy with it. It's also compact and simple to install, I put an AAE L2 antenna in the nose which is also easy and seems to work fine. The customer service is also top notch.















jim







Jim or others,







Does anyone know about any health risks by putting the antenna in close proximity to the pilot?







Thanks, John



This is covered in some depth by some papers published recently in Britain. The subject has to do with portable transponders for use in sport aviation there, these are handheld units which are expected in some cases to be carried in a pocket or worn on a harness. The conclusion of the tests was that as long as the antenna is farther than 8 or 10 inches, the hazard was acceptable by current occupational exposure rules, i.e., you would be allowed to experience that 8 hours a day.

I should add, I have an AEE dipole in the nose about 8 inches from my feet, but despite 200 watts tested radiated power from the Trig 21, it does not keep my feet warm...

I should add, I have an AEE dipole in the nose about 8 inches from my feet, but despite 200 watts tested radiated power from the Trig 21, it does not keep my feet warm...

Ive noticed a marked change in my sex drive with anything past 200 watts..
Seriously, to get back to the OP, I was thinking of a Trig for the ADS-b out capabilities and the PF for the ADS-B in. This way my set up will not become obsolete in a few years. Am I correct on this assumption?

Hi,

The bummer is that even though it is possible to connect a GPS up to the
Trig TT21 or TT22 an send ADS-B data out, the FAA says that is illegal.
They say you must use an approved GPS costing $3000+. I wish we could
convince the FAA that they are reducing safety dramatically by not allowing
any GPS to send data to the TT21/TT22.

Best Regards,

Paul Remde

"K" wrote in message
...





I should add, I have an AEE dipole in the nose about 8 inches from my
feet, but despite 200 watts tested radiated power from the Trig 21, it
does not keep my feet warm...

Ive noticed a marked change in my sex drive with anything past 200 watts..
Seriously, to get back to the OP, I was thinking of a Trig for the ADS-b out
capabilities and the PF for the ADS-B in. This way my set up will not become
obsolete in a few years. Am I correct on this assumption?

On Friday, October 26, 2012 6:39:14 PM UTC-4, Paul Remde wrote:

The bummer is that even though it is possible to connect a GPS up to the
Trig TT21 or TT22 an send ADS-B data out, the FAA says that is illegal.
They say you must use an approved GPS costing $3000+.

A quick list of the approved GPS position sensors and prices

Freeflight 1201 WAAS/GPS Sensor $2,919.00
Freeflight 1204 WAAS/GPS Sensor $6,889.00

Could not find prices for the NexNav sensors:
NexNav MINI WAAS/GPS Sensor
NexNav MAX WAAS/GPS Sensor

Is NexNav shipping these products?

Maybe the price will come down when more than one vendor is shipping approved products.

I cannot help cringing at the requirement for WAAS. If WAAS reduced
positional error to ZERO, that is still less than a 50 foot (15 meter)
improvement over non-differentially corrected GPS. If 50 feet is a
factor, they're screwing up.... big time. Does requiring a WAAS
capable GPS make sense to anyone? (aside from the FAA!)



On Oct 26, 8:05*pm, son_of_flubber wrote:
On Friday, October 26, 2012 6:39:14 PM UTC-4, Paul Remde wrote:
The bummer is that even though it is possible to connect a GPS up to the
Trig TT21 or TT22 an send ADS-B data out, the FAA says that is illegal.
They say you must use an approved GPS costing $3000+.

A quick list of the approved GPS position sensors and prices

Freeflight 1201 WAAS/GPS Sensor $2,919.00
Freeflight 1204 WAAS/GPS Sensor $6,889.00

Could not find prices for the NexNav sensors:
NexNav MINI WAAS/GPS Sensor
NexNav MAX WAAS/GPS Sensor

Is NexNav shipping these products?

Maybe the price will come down when more than one vendor is shipping approved products.

The factor you are missing is that approved Aviation GPS have an error
detection system, and send a message (which is included in the 1090ES data
out) to confirm the information is reliable. Low cost GPS doesn't.

In Europe, as I understand it, you can egally connect a low cost GPS to a
TT21 and it will be broadcast in the DS-B out, but including a 'do not rely
on this information' message. That's regardless of WAAS (or EGNOS over
here).



At 15:36 02 November 2012, Grider Pirate wrote:
I cannot help cringing at the requirement for WAAS. If WAAS reduced
positional error to ZERO, that is still less than a 50 foot (15 meter)
improvement over non-differentially corrected GPS. If 50 feet is a
factor, they're screwing up.... big time. Does requiring a WAAS
capable GPS make sense to anyone? (aside from the FAA!)



On Oct 26, 8:05=A0pm, son_of_flubber wrote:
On Friday, October 26, 2012 6:39:14 PM UTC-4, Paul Remde wrote:
The bummer is that even though it is possible to connect a GPS up to
th=
e
Trig TT21 or TT22 an send ADS-B data out, the FAA says that is
illegal.
They say you must use an approved GPS costing $3000+.

A quick list of the approved GPS position sensors and prices

Freeflight 1201 WAAS/GPS Sensor $2,919.00
Freeflight 1204 WAAS/GPS Sensor $6,889.00

Could not find prices for the NexNav sensors:
NexNav MINI WAAS/GPS Sensor
NexNav MAX WAAS/GPS Sensor

Is NexNav shipping these products?

Maybe the price will come down when more than one vendor is shipping
appr=
oved products.

What Paul said.

The reason I passed on mode S and bought mode C.

Mike

On Friday, October 26, 2012 4:39:14 PM UTC-6, Paul Remde wrote:
Hi,



The bummer is that even though it is possible to connect a GPS up to the

Trig TT21 or TT22 an send ADS-B data out, the FAA says that is illegal.

They say you must use an approved GPS costing $3000+. I wish we could

convince the FAA that they are reducing safety dramatically by not allowing

any GPS to send data to the TT21/TT22.



Best Regards,



Paul Remde



"K" wrote in message

...











I should add, I have an AEE dipole in the nose about 8 inches from my

feet, but despite 200 watts tested radiated power from the Trig 21, it

does not keep my feet warm...



Ive noticed a marked change in my sex drive with anything past 200 watts..

Seriously, to get back to the OP, I was thinking of a Trig for the ADS-b out

capabilities and the PF for the ADS-B in. This way my set up will not become

obsolete in a few years. Am I correct on this assumption?

Regardless of ADS-B out capability, you still want
a Mode S transponder, because:
- Mode S consumes less power
- Mode S will not cause a bunch of gliders in a thermal
to become invisible to a TCAS-equipped approaching jet,
as can happen with Mode A/C,
- Mode S can be "de-duplicated" by FLARM, as the transponder
will be identified as redundant with the more-accurate
FLARM information (other FLARM-equipped gliders will
be spared PCAS alarms from your transponder).

Please install Mode S, not Mode C.
You and everybody else will be a lot happier.

Hope that is clear,
Best Regards, Dave

On Friday, November 2, 2012 9:33:19 AM UTC-7, Dave Nadler wrote:
Regardless of ADS-B out capability, you still want

a Mode S transponder, because:

- Mode S consumes less power

- Mode S will not cause a bunch of gliders in a thermal

to become invisible to a TCAS-equipped approaching jet,

as can happen with Mode A/C,

- Mode S can be "de-duplicated" by FLARM, as the transponder

will be identified as redundant with the more-accurate

FLARM information (other FLARM-equipped gliders will

be spared PCAS alarms from your transponder).



Please install Mode S, not Mode C.

You and everybody else will be a lot happier.



Hope that is clear,

Best Regards, Dave

Dave,

I'm interested in more information regarding the rendering "invisible" potential of Mode A/C. I have a Terra Mode C available to me for the coming season & the research I did indicated to me that it is visible to TCAS equipped aircraft as long as the AD has been complied with. Is there something I missed in my research?

Thanks,
Craig

On Friday, November 2, 2012 2:05:34 PM UTC-4, Craig Funston wrote:

Dave,
I'm interested in more information regarding the rendering "invisible"
potential of Mode A/C. I have a Terra Mode C available to me for the
coming season & the research I did indicated to me that it is visible
to TCAS equipped aircraft as long as the AD has been complied with.
Is there something I missed in my research?
Thanks,
Craig

Yes, read especially the technical notes at the bottom of this page:
http://www.gliderpilot.org/FLARM-Transponders

For any new installation, get a Mode S unit !

Hope that helps,
Best Regards, Dave