FPV HUB
Advanced search  

News:

Who's Online
  • Dot Guests: 92
  • Dot Hidden: 0
  • Dot Users: 8
  • Dot Users Online:
* Site Sponsor
* Random Gallery Items
Sky Surfer

Views: 435
Posted by: ROVguy
in: ROVguys Album
3dbi Omni

Views: 3468
Posted by: Coyote
in: Coyote`s Album
IMAG0161

Views: 1356
Posted by: Njoro
in: FPV Stuff
F450 with FPV

Views: 507
Posted by: ROVguy
in: ROVguys Album
* Latest Gallery Items
IMAG0786

Views: 1939
Posted by: Njoro
in: FPV Stuff
Ground Station

Views: 2512
Posted by: Njoro
in: FPV Stuff
IMAG0165

Views: 2381
Posted by: Njoro
in: FPV Stuff
IMAG0161

Views: 1356
Posted by: Njoro
in: FPV Stuff
zeroG Raptor

Views: 1697
Posted by: Njoro
in: FPV Stuff

Author Topic: Lawmate VTx 2.4Ghz 500mW Impedance?  (Read 325 times)

swake

  • Cadet
  • *
  • Karma: 0
  • Offline Offline
  • Posts: 3
Lawmate VTx 2.4Ghz 500mW Impedance?
« on: June 03, 2017, 01:35:36 PM »

Hello, I'm French so excuse me for my bad English :(

One question: how do you do to measure input impedance of transmitter?

Thanks
Logged

Coyote

  • Admin
  • Marshal of the Royal Air Force
  • *
  • Karma: 310
  • Online Online
  • Posts: 18693
    • My New Blog
Re: Lawmate VTx 2.4Ghz 500mW Impedance?
« Reply #1 on: June 04, 2017, 11:37:06 AM »

Hi and welcome. You don't measure it. The Impedance of a stock 2.4 Lawmate 500mW VTx is something 360 Ohms as opposed to the normal 75 Ohms.

If you need to change the video level from an OSD that's say conflicting with it then add a 75 to 100 ohm resistor between video input and ground.

! No longer available
Logged
Education and schoolin is good, but FPV is gooder :)


My Blog
My Youtube
My Vimeo
 

* Recent Topics
1st gen ipad - uses? by beesleyboy
[Yesterday at 11:55:57 PM]


Venturi in the clouds by beesleyboy
[Yesterday at 11:52:48 PM]


Tiptoe through the Treetops by Lamaule
[Yesterday at 10:12:34 PM]


British Championship 2017 by BigT
[Yesterday at 09:10:10 PM]


What arrived today? by Loopdreams
[Yesterday at 02:33:24 PM]


FlyingWings Genesis by English Turbines
[Yesterday at 11:57:00 AM]


The MiniRaceWing - launching it into the ground toughness test by CurryKitten
[Yesterday at 01:45:32 AM]


eagle eye tracker configuration help by parky
[August 17, 2017, 07:40:34 PM]


Sharing My Music and Sound FX - Over 1000 Tracks by Eric Matyas
[August 17, 2017, 04:25:22 PM]


Epicurus' GT2017 Stretch by Epicurus1
[August 17, 2017, 01:30:53 PM]


Turnigy Accucel6 80w question by elmattbo
[August 17, 2017, 06:20:35 AM]


ASW-28 Glider low by iwan_canobi
[August 17, 2017, 12:39:07 AM]


Split S'ing by Lamaule
[August 17, 2017, 12:31:33 AM]


A nice place to Ride by beesleyboy
[August 17, 2017, 12:16:24 AM]


Drone v Royal Navy's new carrier by electrotor
[August 17, 2017, 12:09:48 AM]

* Keywords
fpvhub  fpv hub
first person view video piloting

rc r/c r.c. model aircraft flight pilot fpv piloting wings fly flying flight fuse fuselage aileron tail pan tilt tx rx vtx rtx receiver transmitter video radio control controlled headtracker fpvuk bfpvmfa fpv uk first person view video piloting fpv servo servos easystar easy star multiplex antenna VR1400 fatshark video goggles 2.4 5.8 1.2 900 ghz mhz uhf panel antenna circular fpv polarised tracker dbi 10mw 100mw 500mw camera osd fpvuk bfpvmfa fpv first person view video piloting downlink ezantenna tracker gps EzOSD current sensor tiny telemetry autopilot ccd gopro kx131 kx171 FY21 FY21A FY21AP II IMU oracle diversity processor video switcher fpvuk bfpvmfa fpv uk first person view video piloting insurance simulator delta wing glider funjet quadcropter helis heli helicopter electric nitro scratchbuild scratch build batteries battery 2s 3s 4s lipo lipos fpvuk first person view video piloting Antenna fpvhub  fpv first person view video piloting rc r/c r.c. model aircraft flight pilot fpv Airframe Artifical Horizon Auto pilot Av AWG AWU Bec Brownout Buddy box C rating CG Circular Polarized Data logger Dbi Dbm Dipole Diversity DVR Easycap EPO EPP Failsafe FM Freshnel zone Frequency Gain Ghz Goggles GPS Ground Station Gyro Head Tracker HD Hz Inverted Vee Jst LC Filter Lipo LUX Mah Mhz Omni OSD Pan Patch Platform Polarization Rssi RTH Servo Spotter Telemetry Tilt Tracker Transmitter TVL Ubec UHF Video Splitter Vrx Vtx Watts Yagi  fpv uk first person view video piloting rc r/c r.c. model aircraft flight pilot fpv

http://www.fpvhub.com/forum/index.php?action=sitemap;xml http://www.fpvhub.com/forum/index.php?action=sitemap http://www.fpvhub.com/forum/index.php?action=sitemap;start=0 http://www.fpvhub.com/forum/index.php?action=sitemap;start=100 http://www.fpvhub.com/forum/index.php?action=sitemap;start=200 http://www.fpvhub.com/forum/index.php?action=sitemap;start=300 http://www.fpvhub.com/forum/index.php?action=sitemap;start=400 http://www.fpvhub.com/forum/index.php?action=sitemap;start=500 http://www.fpvhub.com/forum/index.php?action=sitemap;start=600 http://www.fpvhub.com/forum/index.php?action=sitemap;start=700 http://www.fpvhub.com/forum/index.php?action=sitemap;start=800 http://www.fpvhub.com/forum/index.php?action=sitemap;start=900 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1000 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1100 http://www.fpvhub.com/forum/index.php?action=sitemap;start=1200
* Disclaimer
The content, views and opinions expressed within this forum are those of the authors and do not necessarily reflect the views, official policy or position of FpvHub. However, we reserve the right to remove or edit any content considered inappropriate.