Powerflarm results @Seniors

On Friday, March 23, 2012 10:17:30 AM UTC-5, bumper wrote:
On Mar 23, 7:30*am, wrote:
On Friday, March 23, 2012 8:53:21 AM UTC-5, T8 wrote:
The powerflarm alarm would sound and a second or two later the near
miss would occur. The range was unacceptably poor...

Don (DK)

Don,

Were you using the "optional" small panel antenna? This is the flat
black, about 1" X 4" receive antenna that should be mounted vertically
and a couple of feet away from the PowerFlarm. This is intended to
increase the PF effective range and is included with the portable.

thanks,

bumper

No. I was using the antennas mounted to the rear of the portable unit. It is not easy to find a spot a couple of feet away from the panel which will not have some kind of carbon fiber blockage of the antenna.

Don

On Mar 23, 9:06*am, wrote:


No. I was using the antennas mounted to the rear of the portable unit. It is not easy to find a spot a couple of feet away from the panel which will not have some kind of carbon fiber blockage of the antenna.

Don

I simply ran the wire for mine off to the left side of the glare
shield, then back along the canopy frame and mounted the antenna on
the Plexiglas just aft of the sliding window (ASH-26E) using a bit of
Velcro. Should work reasonably well there I'd think, especially
towards the front.

bumper

On 3/23/2012 7:30 AM, wrote:
I had three near misses in thermals. The powerflarm alarm would sound
and a second or two later the near miss would occur. The range was
unacceptably poor...

Was this due to poor range; i.e., PowerFlarm did not receive the signal
from the other glider until it got too close to give a quicker warning?

I would guess that if you are thermalling with another glider that might
become a threat, that would be well within receiving range, and the
short warning time was due to poor threat determination, rather than
poor signal detection.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

On Friday, March 23, 2012 11:20:41 AM UTC-5, Eric Greenwell wrote:
On 3/23/2012 7:30 AM, dfkroesch wrote:
I had three near misses in thermals. The powerflarm alarm would sound
and a second or two later the near miss would occur. The range was
unacceptably poor...

Was this due to poor range; i.e., PowerFlarm did not receive the signal
from the other glider until it got too close to give a quicker warning?

I would guess that if you are thermalling with another glider that might
become a threat, that would be well within receiving range, and the
short warning time was due to poor threat determination, rather than
poor signal detection.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)

My three "near misses" were thermal entering problems. Twice the other guy - once my fault. I am aware that the other guys might be keeping score in a different way.....

From what I saw, the portable PowerFlarm range was clearly less than 1/4 mile - perhaps more like 1/8 mile. One or two seconds warning is not enough.

Don

At 17:29 23 March 2012, wrote:
On Friday, March 23, 2012 11:20:41 AM UTC-5, Eric Greenwell
wrote:
On 3/23/2012 7:30 AM, dfkroesch wrote:
I had three near misses in thermals. The powerflarm
alarm would sound
and a second or two later the near miss would occur. The
range was
unacceptably poor...

Was this due to poor range; i.e., PowerFlarm did not receive
the signal
from the other glider until it got too close to give a quicker
warning?

I would guess that if you are thermalling with another glider
that might
become a threat, that would be well within receiving range,
and the
short warning time was due to poor threat determination,
rather than
poor signal detection.

--
Eric Greenwell - Washington State, USA (change ".netto" to
".us" to
email me)

My three "near misses" were thermal entering problems. Twice
the other guy
- once my fault. I am aware that the other guys might be
keeping score in a
different way.....

From what I saw, the portable PowerFlarm range was clearly
less than 1/4
mile - perhaps more like 1/8 mile. One or two seconds warning
is not
enough.

Don


Don,
Did the FLARM unit you tested have a logger, and do you have
the logger file? If you have, I propose you run the range
analysis http://www.flarm.com/support/analyze/index_en.html
-kh