Meeting to discuss FLARM in the USA

Andy wrote:

I'll be the first to admit that Xaon MRX would be useless if all
gliders had transponders. The designer was approached to see if an
intelligent muting alogorith could be added but he responded there was
insufficient processing power in that unit.

If gliders everywhere were assigned a separate code, like the 0440 in
Minden, it might be a much easier task. Nearby gliders would not
generate alerts, for example, while airplanes using the 1200 code would be.

So integrate the sniffer
with FLARM and provide intelligent muting of transponder alerts then
you would have a US market.

Yes! And if the logger were IGC approved, it would be an even bigger market.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly
* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

Eric Greenwell skrev:
Buy a Colibri FLARM and you have it!

Robert Danewid
AS 28-18E RD

Yes! And if the logger were IGC approved, it would be an even bigger
market.

On Oct 29, 3:55 pm, Robert Danewid
Buy a Colibri FLARM and you have it!

I don't think so! Are you saying the Colibri has integrated PCAS and
reports transponder targets?

Andy

On Oct 29, 1:14 pm, Eric Greenwell wrote:

If gliders everywhere were assigned a separate code, like the 0440 in
Minden, it might be a much easier task. Nearby gliders would not
generate alerts, for example, while airplanes using the 1200 code would be.

The Zaon MRX does not do anything with the squawk code except to
report the host aircraft code. Target tracking and reporting is based
only on signal strength which is interpreted as target distance.
Based on the the designers response to intelligent muting I have no
doubt that intelligent muting based on squawk code would be a non-
starter.

Andy

Andy wrote:
On Oct 29, 1:14 pm, Eric Greenwell wrote:
If gliders everywhere were assigned a separate code, like the 0440 in
Minden, it might be a much easier task. Nearby gliders would not
generate alerts, for example, while airplanes using the 1200 code would be.

The Zaon MRX does not do anything with the squawk code except to
report the host aircraft code. Target tracking and reporting is based
only on signal strength which is interpreted as target distance.
Based on the the designers response to intelligent muting I have no
doubt that intelligent muting based on squawk code would be a non-
starter.

It was a general observation that applies to transponder detectors. I
think it would require less processing power and provide better muting
if the unit could determine which threat was a glider and which was an
airplane.

I would like to hear from MRX-equipped (or similar units) pilots that
fly with other gliders equipped with transponders. I've done a limited
amount of it, and with only a few gliders at a time. By setting the
altitude warning band tighter and ocasionally using the mute button on
the MRX (though I'd like the mute to automatically reset after 5 or 10
minutes), I wasn't bothered by excessive alerts.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly
* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

I've been flying with a Proxalert R-5 for over 5 years. It displays the
squawk code of the threat aircraft so I can tell, at least near Minden, if
it's a glider (0440) or someone not talking to ATC (1200), or if the other
aircraft *is* talking to ATC (discreet code) and thus likely has been told
about me.

The R5's ability to display squawk appears to be not enough of an advantage
to overcome its more expensive price tag and larger form factor as compared
to the diminutive and more popular ZAON

I wonder if enough people asked them to add squawk code display, ZAON would
add that to there next model. I'd buy one.

bumper


"Eric Greenwell" wrote in message
news:Z2UVi.4372$pT.572@trndny07...
Andy wrote:
On Oct 29, 1:14 pm, Eric Greenwell wrote:
If gliders everywhere were assigned a separate code, like the 0440 in
Minden, it might be a much easier task. Nearby gliders would not
generate alerts, for example, while airplanes using the 1200 code would
be.

The Zaon MRX does not do anything with the squawk code except to
report the host aircraft code. Target tracking and reporting is based
only on signal strength which is interpreted as target distance.
Based on the the designers response to intelligent muting I have no
doubt that intelligent muting based on squawk code would be a non-
starter.

It was a general observation that applies to transponder detectors. I
think it would require less processing power and provide better muting if
the unit could determine which threat was a glider and which was an
airplane.

I would like to hear from MRX-equipped (or similar units) pilots that fly
with other gliders equipped with transponders. I've done a limited amount
of it, and with only a few gliders at a time. By setting the altitude
warning band tighter and ocasionally using the mute button on the MRX
(though I'd like the mute to automatically reset after 5 or 10 minutes), I
wasn't bothered by excessive alerts.

--
Eric Greenwell - Washington State, USA
* Change "netto" to "net" to email me directly
* "Transponders in Sailplanes" http://tinyurl.com/y739x4
* "A Guide to Self-launching Sailplane Operation" at www.motorglider.org

On Oct 30, 10:06 pm, Eric Greenwell wrote:

I would like to hear from MRX-equipped (or similar units) pilots that
fly with other gliders equipped with transponders. I've done a limited
amount of it, and with only a few gliders at a time. By setting the
altitude warning band tighter and ocasionally using the mute button on
the MRX (though I'd like the mute to automatically reset after 5 or 10
minutes), I wasn't bothered by excessive alerts.

I have the MRX and have flown at meets where there was at least one
transponder equipped glider. It was not a problem. For the case
where I was nearly mown down by a King Air, the MRX would have given
no protection if one of the other gliders with me had been transponder
equipped and I had muted the MRX. Intelligent muting requires that
the unit will unmute if a new threat is detected. It could perhaps be
made more intelligent if unmute was not activated by a new glider
target but that's debatable.

I think there is great potential for integrating FLARM or ADS-B (with
CDTI) with PCAS devices. I hope that will be discussed at the
meeting.


Andy