WKM and Thomas Scherrer long range no happy

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Elliott000

Member
WKM and Thomas Scherrer long range cuts range

Anyone on here have an issue with thier WKM and Thomas Scherrer(TSLRS) long range gear?
I have done some testing because my range was terrible and my findings are that the WKM system is causing the loss of reception, During range testing with everything on except WKM i get acceptable test measurements but as soon as i add the WKM my range falls to like 4 - 5 meters when it was 20.... These distances are antenna down range tests not actual flight distance lol, with 4 meter range test i get about 5-600 actual meters then i hit failsafe, at least I know my Hexa will come home lol
 
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TooSlow2Care

Member
that's very odd. i have not hooked up a Sherrer LRS, to my WKM or WKH. i was planning to, so now i really want to test it out.
I'll check on it when i get back from a business trip, but i'm wondering if the GPS at 10hz or some of the WK stabilization system is sending back EMF to the LRS. would a ferrite toroid help close to the LRS rx? or perhaps the antennas are too close to all of the ESCs or the WK IMU box?

sorry to blather on, just trying to help brainstorm your range issues.

cheers,
Brian
 

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meme

Member
Elliot, are you testing that on the AD6? I use EZUHF, but when i add my Long Range Gear on a Model with Carbon Parts, i have the same Issues. It?`s a known Fact that Carbon disturbes Long Range Equipments.

-meme
 

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Elliott000

Member
Yuup, its on the ad-6... Ive given uo and have thrown my spektrum gear on it. Which i may now sell and grab a futaba system, i eant more channels
 

yeehaanow

yeehaanow

Member
The EZUHF manual suggests to look at your BEC first.
I am not an expert in this area but it's doubtful that the GPS would be the cause.
How is your antenna placed?
 

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Elliott000

Member
Gps isnt the issue i cant nail it down.. And i cant not use the wookong bec, my antenna is up top about 8" away from any wkm components, even if i have the rx 3ft away it starts comming back. 4ft and im good
 


kloner

kloner

Aerial DP
uhf isn't as easy as plug and play systems like spektrum/futaba. There so touchy to any interference......... i battled mine for a week and finally am coming down to figure out it's 2 of the deans on my packs make noise..... Anything that can cause interferrence will. Even a noisy motor, bad bec/esc/connector/scent in the wind....

You might mention to who you got it from that it's not for you, they may take it back if was new.

When you say acceptable, what does the TSlrs recomend for range testing. mines 75 meters plus but i get 130, 30-40m doesnt sound like enough. it is usually all interference that makes problems with loss of reception. if you had flown video link with audio before then swap over, you'll see and hear the problem with minor static in both channels
 

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Elliott000

Member
Acceptable is anywhere from 6 meters up... When I tested the rx with a pack and servo alone I get some 30 meters, adding esc's no change, adding WKM i lose it all. Ive flown and still fly my other rx on my naza quad with out issues, ive taken it out 2.5 km! Im keepin tslrs but i will dig deeper on my hexa....
 

kloner

kloner

Aerial DP
need to look at shielding, connectors, the power to it, that connector, and if all else failed, try powering the lrs from it's own power supply, like that pack with the servo you used..... Somewhere somethings dirty. Does the wkm sat antenna have to be in the middle? If so, that sucks. they need seperation. is there a vtx too? what kind? how big? does it use the 900mhz downlink? got a filter on the antenna? wonder if it needs it like the vtx's do in those lower freq's?

are you using a dipole? sanders? what kind of rx antenna? where did you read how to make it?
 

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Elliott000

Member
Sat antenna, if referring to gps then it can go anywhere. What is a good method of shielding connections, ive tried the seperate rx battery it had no effect. No wkm downlink, i do have a 900mhz vtx unfiltered but on my quad it had no effect so i assumed that it wouldn't here either, in testing the vtx showed no issue
 

kloner

kloner

Aerial DP
youd want to twist everything... make wires all to fit, no zig zag then zip tied. you'd want a quality vtx, the cheaper chineese stuff greatly affects uhf..... the uhf is alot of work to get going, but then you can fly on the deck 10 miles out when you get it going so it's about what you want in the end.

anything electronic could use a metal shield of not already

try the half wave dipole and make sure the positive wire is pointing straight up. if you have a sanders now, just add a wire the same length to the bottom of the sma hanging down... 16.4mm

most important though, getting everything segregated and as far apart as possible as far as r/c and video
 


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Elliott000

Member
No.... But i did fly it into the ground last week :(, just over some trees and my spektrum gear started seeing major holds... Fack, im rebuilding as money xomes available and WILL make this work lol i am starting from scratch, wkm and scherrer then building around it to find the exact culprit
 

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