soaring video with Flarm in use

On Sep 17, 2:25*pm, Chris Nicholas wrote:
The way Flarm works is also dependent on its installation, which as
far as I can see particularly involves the location of the tiny aerial
which gives Flarm to Flarm communication.

My unit is on top of the instrument coaming. This shields it from
transmissions from below, so an approaching glider at a lower level
may be detected some distance away, and then it becomes invisible to
the Flarm unit as it gets close and underneath.

I have also found that on some occasions, a glider has to be really
near before the unit detects it. I don't know why, but it seems to be
somewhat variable.

Nevertheless, I find it very valuable, and these elements of
variability do not make it worthwhile to me to try to develop a
different location for a remote aerial, which in any case would need a
lead that I don't have, although I believe one is available if
required.

Chris N

now I'm worried...............I have a carbon fiber airframe.

Brad

now I'm worried...............I have a carbon fiber airframe.

Brad- Hide quoted text -

- Show quoted text -

So do I, and I think the coaming is also carbon fibre.

Regarding colours, I have the simplest Flarm, and it does have green
lights for contacts that are not a threat. It only shows red when a
contact turns into a threat.

Chris N

On 9/17/2010 2:38 PM, Brad wrote:
On Sep 17, 2:25 pm, Chris wrote:

Nevertheless, I find it very valuable, and these elements of
variability do not make it worthwhile to me to try to develop a
different location for a remote aerial, which in any case would need a
lead that I don't have, although I believe one is available if
required.

Chris N

now I'm worried...............I have a carbon fiber airframe.


You should be fine - PowerFlarm has higher power output than Flarm, and
you can add a second Flarm antenna.

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl

- "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what you need to know tinyurl.com/yfs7tnz

Actually the FLARM should light up stable (no blinking, and no sound) for
such a case.
This is a tipical situation with FLARM. It's not a software problem, it's a
radio problem.
The range is drastically reduced by badly positioned antennas, so if you are
not heading towards another unit
there are good chances that sometimes it won't light up, just like in the
video.

If FLARM could transmit at more than those few (20?) mW things would be very
different.
In any case, it works fine when you have frontal traffic because the
antennas are perfectly visible each other.

All users (and in the alps in europe we all use flarms since 2006) know that
their flarm is only an auxiliary help for safety,
and that many times it won't light up for nearby traffic. You must always
assume that another glider is not using a Flarm.
That's imperative.



"John Smith" ha scritto nel messaggio
. ..
db_sonic wrote:
Is it just me? I am surprised the Flarm doesnt light up more.
Its like the pilot looks right and sees the other glider before the
Flarm lights up.
And that other guy is close!

Actually, that's the whole point of FLARM: It doesn't dumbly warn based on
proximity, but intelligently based on the predicted flight paths. And it
knows about gliders. ;-)

On Fri, 17 Sep 2010 21:22:23 GMT, "PCool"
wrote:

Actually the FLARM should light up stable (no blinking, and no sound) for
such a case.

It's a question of the setting.
This Flarm is set to "warnings only" where it only lightens up in case
of a possible collision.

What you mean is the "proximity mode" where the Flarm always shows the
direction to the closest target.



Regards
Andreas

It looks like the pilot has put his FLARM in stealth mode. In this mode
only situations in which an impact is expected within the next 18
seconds are annunciated as proximity warnings (alerts). The stealth mode
is used by some pilots to make their position data and lift and sink
information unavailable to other pilots, if this information is not
necessary for proximity warning.

The display used in this gilder annunciates proximity warnings (alerts)
in red, mere proximity information would be displayed in green.


Am 17.09.2010 21:51, schrieb db_sonic:
On Sep 16, 10:44 am, wrote:
http://www.youtube.com/watch?v=UWRX1...ayer_embedded#!

the guy shooting the video has a Flarm on top of his panel, in some of
the scenes you can see the display lighting up and see the target
sailplanes. I thought this was pretty cool to see Flarm in action.

Brad

Is it just me? I am surprised the Flarm doesnt light up more.
Its like the pilot looks right and sees the other glider before the
Flarm lights up.
And that other guy is close!

Green??
I dont think so, the only green leds on flarms are those blinking for gps
transmission, power etc.
All informations are red, either fixed or blinking.
I dont think they were in "stealth" mode, it is tricky to use it and -
then - your PDA won't receive traffic informations.
Moreover, stealth mode is bypassable using an alternative "compatible"
device, on the market, so it is not a choice.


"hans" ha scritto nel messaggio
...
It looks like the pilot has put his FLARM in stealth mode. In this mode
only situations in which an impact is expected within the next 18 seconds
are annunciated as proximity warnings (alerts). The stealth mode is used
by some pilots to make their position data and lift and sink information
unavailable to other pilots, if this information is not necessary for
proximity warning.

The display used in this gilder annunciates proximity warnings (alerts) in
red, mere proximity information would be displayed in green.


Am 17.09.2010 21:51, schrieb db_sonic:
On Sep 16, 10:44 am, wrote:
http://www.youtube.com/watch?v=UWRX1...ayer_embedded#!

the guy shooting the video has a Flarm on top of his panel, in some of
the scenes you can see the display lighting up and see the target
sailplanes. I thought this was pretty cool to see Flarm in action.

Brad

Is it just me? I am surprised the Flarm doesnt light up more.
Its like the pilot looks right and sees the other glider before the
Flarm lights up.
And that other guy is close!

Green is proximity red alarm.Stealth is compulsory in rated comps to reduce
leeching.There has been a lot of discusion in the uk about degrading the
signal for comps,but there seems little choice because you can see
everyone elses speed and rate of climb on the pda if they are not in
stealth mode.


At 21:26 17 September 2010, PCool wrote:
Green??
I dont think so, the only green leds on flarms are those blinking for gps

transmission, power etc.
All informations are red, either fixed or blinking.
I dont think they were in "stealth" mode, it is tricky to use it and -

then - your PDA won't receive traffic informations.
Moreover, stealth mode is bypassable using an alternative "compatible"

device, on the market, so it is not a choice.


"hans" ha scritto nel messaggio
...
It looks like the pilot has put his FLARM in stealth mode. In this mode

only situations in which an impact is expected within the next 18
seconds
are annunciated as proximity warnings (alerts). The stealth mode is
used

by some pilots to make their position data and lift and sink
information

unavailable to other pilots, if this information is not necessary for
proximity warning.

The display used in this gilder annunciates proximity warnings
(alerts)
in
red, mere proximity information would be displayed in green.


Am 17.09.2010 21:51, schrieb db_sonic:
On Sep 16, 10:44 am, Brad wrote:
http://www.youtube.com/watch?v=UWRX1...ayer_embedded#!

the guy shooting the video has a Flarm on top of his panel, in some
of
the scenes you can see the display lighting up and see the target
sailplanes. I thought this was pretty cool to see Flarm in action.

Brad

Is it just me? I am surprised the Flarm doesnt light up more.
Its like the pilot looks right and sees the other glider before the
Flarm lights up.
And that other guy is close!

Hi,

To me the stealth and competition modes are a bad idea. They reduce the
effectiveness of the alerts.

As a sometimes contest manager, I would never mandate anything that would
reduce safety.

Paul Remde

"Jonathon May" wrote in message
...
Green is proximity red alarm.Stealth is compulsory in rated comps to
reduce
leeching.There has been a lot of discusion in the uk about degrading the
signal for comps,but there seems little choice because you can see
everyone elses speed and rate of climb on the pda if they are not in
stealth mode.


At 21:26 17 September 2010, PCool wrote:
Green??
I dont think so, the only green leds on flarms are those blinking for gps

transmission, power etc.
All informations are red, either fixed or blinking.
I dont think they were in "stealth" mode, it is tricky to use it and -

then - your PDA won't receive traffic informations.
Moreover, stealth mode is bypassable using an alternative "compatible"

device, on the market, so it is not a choice.


"hans" ha scritto nel messaggio
...
It looks like the pilot has put his FLARM in stealth mode. In this mode

only situations in which an impact is expected within the next 18
seconds
are annunciated as proximity warnings (alerts). The stealth mode is
used

by some pilots to make their position data and lift and sink
information

unavailable to other pilots, if this information is not necessary for
proximity warning.

The display used in this gilder annunciates proximity warnings
(alerts)
in
red, mere proximity information would be displayed in green.


Am 17.09.2010 21:51, schrieb db_sonic:
On Sep 16, 10:44 am, Brad wrote:
http://www.youtube.com/watch?v=UWRX1...ayer_embedded#!

the guy shooting the video has a Flarm on top of his panel, in some
of
the scenes you can see the display lighting up and see the target
sailplanes. I thought this was pretty cool to see Flarm in action.

Brad

Is it just me? I am surprised the Flarm doesnt light up more.
Its like the pilot looks right and sees the other glider before the
Flarm lights up.
And that other guy is close!