

tascheri
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RC-Cam Visitor
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Comtech Tuner Module Upgrade
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
reading and watching. absolutely amazing info. was just looking for some pinouts on Google and landed here. TYVM, -
tascheri started following Using the $50 Digital Scope to Measure Video Levels, Comtech Tuner Module Upgrade, Horizontal banding and and 2 others
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Horizontal banding
tascheri replied to tascheri's topic in Wireless Video Antenna Problems and Solutions
OK, got it. The mic is facing back but maybe too close to the prop ( 4 inches ). I´m stretching the cable outwards out of the motor area and adding a trimpot in series to adjust the level. The vid TX is way out on the wingtip, not soft mounted by I doubt it´s getting any considerable vibrations though, I am very serious about balancing props. Hope the weather smooths out towards the weekend ( it´s winter here now ) to have some tests. Results will be posted. Thanks again. -
Horizontal banding
tascheri replied to tascheri's topic in Wireless Video Antenna Problems and Solutions
Thanks Terry. Maybe a partially loose contact with vibration could have done it. Will check my video levels too. I did have a ground wire break off from the connector during periodical maintenance, maybe it was already failing. -
Hi guys, The other day I experienced some white banding on my video feed that I had never seen on my current setup. It is not constant throughout the flight but raised my eyebrows immediately. Haven´t flown since but I am assuming it was site related because it was not there before... But one never knows. VTX 1.200 G 300 mW - SPW + GP patch ( too lazy to build a helical... and the GP patch works well with circular indeed...) RC 72.350 Mhz PCM 1,20 m wing with VTX on wingtip and all shielded wiring. I have no audio recorded but the audio from the MIC was clear.
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Headplay mysteries
tascheri replied to Doofer's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
I experience the same focus issue that MR RC. reports here. I was beginning to think I am too old for FPV... The FOV is also an issue, when I turn my eyeballs to the corners, the image gets darker... It really bothers me with the quad. I heard the Heaplays are not going to be manufactured anymore. I don´t care because when mine go bad, I´m getting some FS´s. -
Wireless A/V Receiver SAW Filters: What's this all about?
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
Just got one that has a filter part # D479.5B Should I change it?? edit: 3 db pass band = 26.7 Mhz typ... will soon be replaced! -
Using the $50 Digital Scope to Measure Video Levels
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
Coming from me I would bet on the latter... but then, this camera hooked up to the airwave system gave me a VERY saturated video, like I could only see white when pointing the camera towards the window... I did check on the scopes calibration signal to validate my measurements ( I always do )... Thank you very much sir and have an excellent Sunday. Tomorrow only flying, no lab stuff. -
Using the $50 Digital Scope to Measure Video Levels
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
Can I hook up a resistor voltage divider? or would it be better to use a 1/2 gain Op amp? -
Using the $50 Digital Scope to Measure Video Levels
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
This was measured with the camera hooked up to the Airwave 633 TX module and the measurement is the video signal of the camera. I believe the TX will supply adequate load to the camera´s output, or not? Funny thing is the camera works fine with the matching ebay TX/RX module but when I hooked it up to the Airwave module, full white screen when pointing the camera outside or to a bright light. -
Using the $50 Digital Scope to Measure Video Levels
tascheri replied to Mr.RC-Cam's topic in R/C Wireless Video: General Info, RF Gear, and Cameras
This is what I found in my e-bay sony 1/3 ccd camera. Looks like it´s more like 2.2 Vpp. What should I do? 1 div = .5V / 10 uS -
any recent info on these modules?