Too many GPS puck antennas

This has all been discussed here before. It's a bunch of over-conservative silliness about puck spacing. I actually did testing with different pucks touching each other and they all worked fine. It's better to use the puck supplied with the individual instrument as that introduces less opportunity for something to go wrong. And, if something does go wrong, lesser permutations as to cause.

On Saturday, January 11, 2020 at 12:34:19 PM UTC-8, Eric Greenwell wrote:
wrote on 1/11/2020 9:49 AM:
What brand/model 12v GPS antenna is being used, reasons?

The ones supplied with Powerflarm core, Cambridge 302, and ClearNav. Later, I
removed the 302 and put in a Butterfly vario, using it's supplied GPS antenna.
Everything seemed to work the same.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

The antennas included with glider instruments aren't good to 12v. Give them a try at 9-12v and report how long they last.
Jim

Originally Posted by

On Friday, January 10, 2020 at 9:22:22 PM UTC-5, Charles Longley wrote:
I just started pimping out my ASW20. I am putting in a LXNAV S100, FLARM and an ADS-B Trig transponder. Thant’s three puck antennas and I haven’t even figured out where to put the FLARM antennas yet! Does anyone have a good solution?

Too many puck GPS antennas too close together will lead to interference and poor function.
I remember reading somewhere that these puck antennas must be 30 inches apart to help reduce the possibility of such interference.

What about compass interference with all those magnets and metal ?
I have one that I moved around the compass but seemed to not affect it .

On Saturday, January 11, 2020 at 5:43:09 PM UTC-8, Delta8 wrote:
;1007977 Wrote:
On Friday, January 10, 2020 at 9:22:22 PM UTC-5, Charles Longley
wrote:-
I just started pimping out my ASW20. I am putting in a LXNAV S100,
FLARM and an ADS-B Trig transponder. Thant’s three puck antennas and I
haven’t even figured out where to put the FLARM antennas yet! Does
anyone have a good solution?-

Too many puck GPS antennas too close together will lead to interference
and poor function.
I remember reading somewhere that these puck antennas must be 30 inches
apart to help reduce the possibility of such interference.

What about compass interference with all those magnets and metal ?
I have one that I moved around the compass but seemed to not affect it





--
Delta8

Compass? We don't need no stinkin compass. ;-)

7Q

Pfft compass what’s that? Look out the canopy.

Charles Longley wrote on 1/11/2020 6:59 PM:
Pfft compass what’s that? Look out the canopy.

Not a good option in Kansas! You are spoiled by flying where there are mountains
to guide you. In Kansas, look at the GPS track when you want to know direction. Or
pull out your iPhone, and use the compass app.

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1

Play around with positioning.Â* If you want to try the glued on washers
with magnetic antennae, try installing them as far back or as far
forward on the canopy rails as you can.Â* My Stemme is very wide so my
pucks are far away from the panel.



On 1/11/2020 5:48 PM, Delta8 wrote:
;1007977 Wrote:
On Friday, January 10, 2020 at 9:22:22 PM UTC-5, Charles Longley
wrote:-
I just started pimping out my ASW20. I am putting in a LXNAV S100,
FLARM and an ADS-B Trig transponder. Thant’s three puck antennas and I
haven’t even figured out where to put the FLARM antennas yet! Does
anyone have a good solution?-

Too many puck GPS antennas too close together will lead to interference
and poor function.
I remember reading somewhere that these puck antennas must be 30 inches
apart to help reduce the possibility of such interference.
What about compass interference with all those magnets and metal ?
I have one that I moved around the compass but seemed to not affect it
.





--
Dan, 5J

I put a couple on my canopy rails.Â* Most (mine, at least) GPS pucks have
a magnetic base so I glued small steel washers to the glare shield and
slapped the pucks in place.Â* No worries when jettisoning the canopy.

On 1/10/2020 7:22 PM, Charles Longley wrote:
I just started pimping out my ASW20. I am putting in a LXNAV S100, FLARM and an ADS-B Trig transponder. Thant’s three puck antennas and I haven’t even figured out where to put the FLARM antennas yet! Does anyone have a good solution?

--
Dan, 5J

You can feed the S100 with flarm data which has GPS data

On Sunday, January 12, 2020 at 1:31:26 AM UTC-8, Richard Frawley wrote:
You can feed the S100 with flarm data which has GPS data

This came up elsewhere, and other folks suggested you could not switch the S100 off the internal GPS for basic navigation data.

Do you know for sure the S100 can use that FLARM GPS data for navigation? If so is there any way to select which GPS source is used? The manual seems to not mention this or clarify the GPS source being used. If the connection of a FLARM always have to use the external FLARM GPS that might raise concerns you are not navigating from the exact GPS that is driving the S100 flight recorder (so you are not necessarily seeing exactly the same data... or maybe not noticing any problems). This is a S100 specific question, clearly the S80 etc. use the external GPS data for navigation.