CORE Rx with Patch antennas
06-27-2019 | 02:55 AM
#1
Thread Starter
CORE Rx with Patch antennas
As some of you will remember I added patch antennas to the Weatronic Micro Rx’s...well I like to fiddle...
Swapping over my Extra to CORE which has patch antennas all installed so wanted to continue to use them as dB figures returned off the Weatronic system have always been excellent...
Alan
Last edited by fireblade5437; 06-27-2019 at 03:10 AM.
07-17-2019 | 04:55 AM
#2
Patch
Great idea, Alan.
When Weatronics introduced me to patches ( about which I knew nothing) I tried flying a Gizmo receiver with one patch and one normal whip for comparisons. With the gps I was able to make comparisons at comparable ranges and orientation.
The already good numbers with the monopole were significantly better with the patch, so all four of my Gizmo models use dual patches. The hemispherical tx and rx patterns seem to work very well indeed and the occasional loss of downlink was almost eliminated.
I am now testing Core so perhaps you could give us some comparison numbers as you can, as you have shown, display LQI and db numbers on the home screen.
For those unaware, the RF section of the Core is as developed by Weatronic, which after over 1000 turbine flights with Wea, which each one checked on Navview I found the link, proven by recorded data, rock solid.
PS The cables you made for my Weatronic modules, still in place, perfect !
The Core is now certified by the FCC so US deliveries can begin.
When Weatronics introduced me to patches ( about which I knew nothing) I tried flying a Gizmo receiver with one patch and one normal whip for comparisons. With the gps I was able to make comparisons at comparable ranges and orientation.
The already good numbers with the monopole were significantly better with the patch, so all four of my Gizmo models use dual patches. The hemispherical tx and rx patterns seem to work very well indeed and the occasional loss of downlink was almost eliminated.
I am now testing Core so perhaps you could give us some comparison numbers as you can, as you have shown, display LQI and db numbers on the home screen.
For those unaware, the RF section of the Core is as developed by Weatronic, which after over 1000 turbine flights with Wea, which each one checked on Navview I found the link, proven by recorded data, rock solid.
PS The cables you made for my Weatronic modules, still in place, perfect !
The Core is now certified by the FCC so US deliveries can begin.
Last edited by David Gladwin; 07-17-2019 at 05:01 AM.
07-18-2019 | 03:08 PM
#4
Thread Starter
Hi David hope your well, I have done range test with the 9ch temporally plugged into my extra but with both antennas screwed into the existing two patch antennas in the aircraft etc. I have not yet set up program so just had rudder set up so I could do range test etc the only issue on the core whilst conducting the range test is you cannot view the RSSI figures or LQ etc which is a shame. With the range I got under test condition I would have no problem in flying with the 9ch Rx hooked up to the patch antennas. Richard did tell me that they have made the Rx more sensitive and he did not know if patch would improve or not etc but he did ask me for results which I have told him the results of ground range tests. Should not be to many weeks before I get chance to change over completely.
I have installed my Core for test in a Elan I brought for testing etc and have a mercury SRS with PBR26 and it had first flight the other day with everything being fine.
Going to install another Mercury SRS and 2 x PBR26 and CTU unit in my T1 jet also installing Power Expander with PBR26 feeding Powerbox into CARF Hawk...
I am still flying my Graupner MX24s with DV4 module with all four wires internal going up inside of mounting shaft ie no external patch lead at all, this also working faultless.
I really like the CORE!
Alan
I have installed my Core for test in a Elan I brought for testing etc and have a mercury SRS with PBR26 and it had first flight the other day with everything being fine.
Going to install another Mercury SRS and 2 x PBR26 and CTU unit in my T1 jet also installing Power Expander with PBR26 feeding Powerbox into CARF Hawk...
I am still flying my Graupner MX24s with DV4 module with all four wires internal going up inside of mounting shaft ie no external patch lead at all, this also working faultless.
I really like the CORE!
Alan
Last edited by fireblade5437; 07-18-2019 at 03:43 PM.
07-18-2019 | 03:36 PM
#5
Thread Starter
LQI is quality etc reason of 40% I had Tx a bit near to Rx and it was simple case of being over swamped. Normally you would expect this to be as high as possible but I have set alarm to go off at 40% and 45% in the Core. Also when I was testing and took photo one of the patch antennas was actually upside down and one was right side up! Not ideal :-)
dBm is showing the strength of signal ie the typical antenna you have on a JR/Futaba/Spekky is normally a 2db gain antenna. If we see the output attenuated then the dB figure will alter. The Core uses patch antennas same as the Weatronic did achieving 180deg perfect radiation from antenna, these antennas achieve a greater all round output with no ‘squashed doughnut’ radiation patterns such of those from the end of a normal dipole antenna. For example if you cover the top of the patch antennas with your hand you are attenuating the output hence the change in dBm figure.
dBm is showing the strength of signal ie the typical antenna you have on a JR/Futaba/Spekky is normally a 2db gain antenna. If we see the output attenuated then the dB figure will alter. The Core uses patch antennas same as the Weatronic did achieving 180deg perfect radiation from antenna, these antennas achieve a greater all round output with no ‘squashed doughnut’ radiation patterns such of those from the end of a normal dipole antenna. For example if you cover the top of the patch antennas with your hand you are attenuating the output hence the change in dBm figure.
Last edited by fireblade5437; 07-18-2019 at 03:47 PM.
07-21-2019 | 05:03 AM
#6
Hi David hope your well, I have done range test with the 9ch temporally plugged into my extra but with both antennas screwed into the existing two patch antennas in the aircraft etc. I have not yet set up program so just had rudder set up so I could do range test etc the only issue on the core whilst conducting the range test is you cannot view the RSSI figures or LQ etc which is a shame. With the range I got under test condition I would have no problem in flying with the 9ch Rx hooked up to the patch antennas. Richard did tell me that they have made the Rx more sensitive and he did not know if patch would improve or not etc but he did ask me for results which I have told him the results of ground range tests. Should not be to many weeks before I get chance to change over completely.
I have installed my Core for test in a Elan I brought for testing etc and have a mercury SRS with PBR26 and it had first flight the other day with everything being fine.
Going to install another Mercury SRS and 2 x PBR26 and CTU unit in my T1 jet also installing Power Expander with PBR26 feeding Powerbox into CARF Hawk...
I am still flying my Graupner MX24s with DV4 module with all four wires internal going up inside of mounting shaft ie no external patch lead at all, this also working faultless.
I really like the CORE!
Alan
I have installed my Core for test in a Elan I brought for testing etc and have a mercury SRS with PBR26 and it had first flight the other day with everything being fine.
Going to install another Mercury SRS and 2 x PBR26 and CTU unit in my T1 jet also installing Power Expander with PBR26 feeding Powerbox into CARF Hawk...
I am still flying my Graupner MX24s with DV4 module with all four wires internal going up inside of mounting shaft ie no external patch lead at all, this also working faultless.
I really like the CORE!
Alan
I am indeed well, hope you are too. You may recall helping install my original Weatronic 2.4 receiver at Scampton about 8 years ago, its still installed and working to perfection, as has all my Wea devices, three DV 4 modules on JR 12Xs plus the BAT 60, as well as about 14 receivers , all Gizmos with patch antennae. Its a near bullet proof as possible.
As far as the Core is concerned, I am currently preparing a detailed review for RCJI.
To say I am impressed is an understatement, clearly the Core owes its heritage to Weatronics, and is all the better for that, my impressions after about 6 hours of exploration are that this IS the state of the art. Sure, there are some things to come, Flight Modes, sequencers etc but I am confident this radio will be the “ Gold Standard” of RC systems and I will progressively convert all my my models to it as my Wea equipment ages.
To anyone considering purchasing a unit , my advice is to get one, soonest !
This morning I configured a 9 channel rx for my little L39, it was so easy that my cup of tea was still warm when I finished !
Only the very best of RC goes into my models, so the Core will go into my new aircraft, an Airworld Sea Fury, with Moki 250, an £ 8000 investment, with electric start (the pushbuttons on the Tx are perfect for the starter) can’t give it a higher compliment !
Best regards,
David.
Last edited by David Gladwin; 07-21-2019 at 05:07 AM.
07-22-2019 | 09:45 PM
#7
My Feedback: (3)
LQI is quality etc reason of 40% I had Tx a bit near to Rx and it was simple case of being over swamped. Normally you would expect this to be as high as possible but I have set alarm to go off at 40% and 45% in the Core. Also when I was testing and took photo one of the patch antennas was actually upside down and one was right side up! Not ideal :-)
dBm is showing the strength of signal ie the typical antenna you have on a JR/Futaba/Spekky is normally a 2db gain antenna. If we see the output attenuated then the dB figure will alter. The Core uses patch antennas same as the Weatronic did achieving 180deg perfect radiation from antenna, these antennas achieve a greater all round output with no ‘squashed doughnut’ radiation patterns such of those from the end of a normal dipole antenna. For example if you cover the top of the patch antennas with your hand you are attenuating the output hence the change in dBm figure.
dBm is showing the strength of signal ie the typical antenna you have on a JR/Futaba/Spekky is normally a 2db gain antenna. If we see the output attenuated then the dB figure will alter. The Core uses patch antennas same as the Weatronic did achieving 180deg perfect radiation from antenna, these antennas achieve a greater all round output with no ‘squashed doughnut’ radiation patterns such of those from the end of a normal dipole antenna. For example if you cover the top of the patch antennas with your hand you are attenuating the output hence the change in dBm figure.
Something still doesn't seem quite right
It appears as though the Rx with the lower Q has a higher signal strength while the other Rx has a higher Q and lower signal strength.
What am I missing?
07-23-2019 | 03:28 AM
#9
Yep, that is very strange, indeed. We have never seen a similar data readout on our Weatronics.
07-23-2019 | 04:38 AM
#10
Dont worry about it. The Pb receivers are set to a higher sensitivity than Wea and with extra sensitive patch antennae and being close to the Tx there is probably some swamping.
I have noticed occasionally that my Wea receivers, paricularly those with patch antennae, give a slightly odd behaviour when the Tx was very close. Never a problem in flight, or even when moving the tx a couple of feet away.
I have just tried my Core with the 9 channel receiver. When the tx was within one foot or so of the Tx the RSSI and LQI values were all over the place. Moving to about three feet all was perfect,, RSSI S around 18 and LQI at 100 % .
Real world experience.
I have noticed occasionally that my Wea receivers, paricularly those with patch antennae, give a slightly odd behaviour when the Tx was very close. Never a problem in flight, or even when moving the tx a couple of feet away.
I have just tried my Core with the 9 channel receiver. When the tx was within one foot or so of the Tx the RSSI and LQI values were all over the place. Moving to about three feet all was perfect,, RSSI S around 18 and LQI at 100 % .
Real world experience.
07-23-2019 | 09:09 PM
#12
The Tx power is so high anything closer than 2’ will swamp, actually it’s a good way of testing the failsafe without switching the Tx off.
None of this is new, even Spektrum does something similar if you switch on with the Tx close you can see the remotes flashing sometimes where they have been swamped.
None of this is new, even Spektrum does something similar if you switch on with the Tx close you can see the remotes flashing sometimes where they have been swamped.
07-23-2019 | 11:50 PM
#13
Thread Starter
This is another pic that’s was taken whilst doing same test note about 40min later note Rx voltage drop only on small Fe batt etc
Hi Oli
When I took that first pic the Tx was very close to Rx antennas and as I said one was facing face down on rug the other facing up...soon as I moved Tx away a bit all figures were normal.
Look the only reason I have tried this as I have told Richard is pure curiosity and as I had frameworks/assemblies installed for patch antennas in certain models I decided to use them. The RSSI figures are good and I agree with Dave there is no need for them but as with the Wea the system performance was good without the patch. The range test as I said with the patch was very good and this is purely an exercise.
Flying the Extra with patch has been non eventful...
One thing I will say and Dave obviously knows this with all the flying he has done, the Core is everything I thought it would be in terms of holding it for flying etc totally balanced and good to hold with good stick units and reach of all trims/switches really like it...
This was the feeling I had of the Tx when I first held it when first shown at JetPower and certainly not disappointed
When I put the 2 PBR26 in my T1 with Mercury SRS I shall just be using the wire dipole :-)
See you at JetPower?
Alan
Last edited by fireblade5437; 07-24-2019 at 12:30 AM.
07-24-2019 | 07:53 AM
#14
Thread Starter
David, beat you to it...already using one of the black push buttons for the electric engine starter on a DLE55 works great :-)
New aircraft sounds nice!
Alan
Hi Alan,
I am indeed well, hope you are too. You may recall helping install my original Weatronic 2.4 receiver at Scampton about 8 years ago, its still installed and working to perfection, as has all my Wea devices, three DV 4 modules on JR 12Xs plus the BAT 60, as well as about 14 receivers , all Gizmos with patch antennae. Its a near bullet proof as possible.
As far as the Core is concerned, I am currently preparing a detailed review for RCJI.
To say I am impressed is an understatement, clearly the Core owes its heritage to Weatronics, and is all the better for that, my impressions after about 6 hours of exploration are that this IS the state of the art. Sure, there are some things to come, Flight Modes, sequencers etc but I am confident this radio will be the “ Gold Standard” of RC systems and I will progressively convert all my my models to it as my Wea equipment ages.
To anyone considering purchasing a unit , my advice is to get one, soonest !
This morning I configured a 9 channel rx for my little L39, it was so easy that my cup of tea was still warm when I finished !
Only the very best of RC goes into my models, so the Core will go into my new aircraft, an Airworld Sea Fury, with Moki 250, an £ 8000 investment, with electric start (the pushbuttons on the Tx are perfect for the starter) can’t give it a higher compliment !
Best regards,
David.
New aircraft sounds nice!
Alan
Hi Alan,
I am indeed well, hope you are too. You may recall helping install my original Weatronic 2.4 receiver at Scampton about 8 years ago, its still installed and working to perfection, as has all my Wea devices, three DV 4 modules on JR 12Xs plus the BAT 60, as well as about 14 receivers , all Gizmos with patch antennae. Its a near bullet proof as possible.
As far as the Core is concerned, I am currently preparing a detailed review for RCJI.
To say I am impressed is an understatement, clearly the Core owes its heritage to Weatronics, and is all the better for that, my impressions after about 6 hours of exploration are that this IS the state of the art. Sure, there are some things to come, Flight Modes, sequencers etc but I am confident this radio will be the “ Gold Standard” of RC systems and I will progressively convert all my my models to it as my Wea equipment ages.
To anyone considering purchasing a unit , my advice is to get one, soonest !
This morning I configured a 9 channel rx for my little L39, it was so easy that my cup of tea was still warm when I finished !
Only the very best of RC goes into my models, so the Core will go into my new aircraft, an Airworld Sea Fury, with Moki 250, an £ 8000 investment, with electric start (the pushbuttons on the Tx are perfect for the starter) can’t give it a higher compliment !
Best regards,
David.
