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About sigma_fr

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  • Birthday 08/19/1978

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  • Location
    France Alpes Grenoble
  • Interests
    Freq video : 1.2 GHz
    Radio : LRS T.S
    OSD : RVOSD G2 and G5
    OSD : Intelligent flight
    PLane : EZ, Wing, Elktro junior
  1. 0 ohms => well I don't know, I will compare with a new TX. Composant fail ........ finely no componant fail. I thought that because my installation stop working and the TX was very hot ... but the reson is one of my 3S cell died (RX pack) julien
  2. Ok so I finely find my problem ............... is was not the TX but the RX battery ........... So we mesure some temperature on the TX and some part are very hot (see attach file). So all works fine now Julien Thermal test Tx lawmate 1.2 Ghz.pdf
  3. I read 0 ohm. We are working on with an electronicien friend and it seems that the RF composant failed (over heat) Top left red circle on the picture Julien
  4. Ouups sorry, Here is a picture. So mesure between groung and +. And I found no résistance. Sound not good ?
  5. Ok, I check : Power supplied is 5 V Power line disconnected => short cut => Ground / Power line Is it normal ? ju
  6. Hello, I have several in 500mW Tx lawmate that work very well for over a year. During a test within 20 minutes in the Tx has a lot of heated because now it only works 10 seconds (it's been a fair bit even for teamblacksh*t member). In short if you know you can save him? it's serious doctor? Or must buy a new one? Thank you Julien
  7. Hello, I used DPCAV filter : http://www.dpcav.com/xcart/product.php?productid=16417&cat=266&page=1 ju
  8. Hello, I tested this on my two plane : Freq : 1160 MHz and Low Pass Antenna Filter for 900MHz TX........... and it work very well. Less than a minute for 7 Sat with RVOSD GPS 5Hz and IF OSD GPS 5 Hz.............. work better than 2.4 gHz video Thanks Julien
  9. Hello, Some one know if the IF OSD can worg with thuis GPS ? GT 10Hz SMD GPS Module http://www.nghobbies.com/cart/index.php?main_page=product_info&cPath=41&products_id=497 Thanks Julien
  10. Hello, I have 2 Locosys 5Hz GPS Module. Humm, I juste order 2 DPCAV filter if it doesn't I will try to change GPS ............ Many thanks for all your help Julien LS20033 series products are complete GPS smart antenna receivers, including an embedded antenna and GPS receiver circuits, designed for a broad spectrum of OEM system applications. The product is based on the proven technology found in LOCOSYS 32 channel GPS SMD type receivers MC-1513 that use MediaTek chip solution. The GPS smart antenna will track up to 32 satellites at a time while providing fast time-to-first-fix, one-second navigation update and low power consumption. It can provide you with superior sensitivity and performance even in urban canyon and dense foliage environment. Its far-reaching capability meets the sensitivity requirements of car navigation as well as other location-based applications. Features: * 5Hz max update rate * Default 57600bps * Update rate of 5Hz * GGA, GLL, GSA, GSV, RMC, VTG, ZDA * 32 parallel channel receiver architecture * Fast TTFF at low signal level * MediaTek MT3318 solution * Capable of SBAS (WAAS, EGNOS, MSAS) * 3.3 to 4.2V supply * SAW filter
  11. Ok, Thanks again Mr RC-cam. I will read the RFI whitepaper every evenig before sleep .. during one month Julien
  12. Thanks Mr.RC-cam, Using twisted cable is equivalent to tore to prevent conducted noise ? Thanks Julien
  13. Hello, I recentely move my video system : 2.4 GHz to 1.2 GHz. 3ch=1160 GHz I have 2 FPV plane: Easy Star : RVOSD gen 2 (GPS 5Hz) Flying wing : Intelligent flight OSD (GPS 5Hz) With EZ: I don't have more problem to lock GPS but I lost GPS signal easily (when I turn for exemple). With flying wing: I need 15 minut to lock the GPS (2 minutes with 2.4 GHz) ... And I lost GPS signal during flight. Do you have this problem ? Should I move to other freqence ? 1ch=1080 2ch=1120 3ch=1160 4ch=1100 5ch=1140 6ch=1180 Any idear ? On picture : red arrow is GPS and blue arrow is TX If I move to chanel 1 (1080) and I mount an 900 Mhz filter ... does it will works ?? http://www.dpcav.com/xcart/product.php?productid=16417&cat=266&page=1 I found also this one ... but the shipping cost is expensive to france about 90 $ !! http://www.minicircuits.com/pdfs/VLF-1000.pdf Thanks Julien
  14. Sorry my question was not clear: I would like to power the OSD, the CAM and the TX with the flight battery. If The OSD is powered by the flight battery I hope that It can power the Tx and CAM (5V). I just want to be sure Julien
  15. Hello, Does the IF OSD can powered directely 5 VCC CAM and TX ? On the connection diagram I see a 2 S 3 S batt + regulator (but I think It is when we have 12 Vcc TX or Cam) Thanks JulienOSD_ConnectionDiagram.pdf
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