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Peaps

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About Peaps

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    RC-Cam Visitor

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    UK
  1. The patch antenna at 900Mhz isn't that big. It's about 10 inch square I suppose, from memory. Yes you are right about the fact that 900 is better around obstacles. I would always go 900Mhz over 2.4G because of the amount of other stuff using 2.4Ghz, like wireless Lans, bluetooth, R/C transmitters now etc. 2.4Ghz will also suffer from reflections and a much higher path attenuation than 900MHz. The signal path attenuation gets lower with frequency, but as RC Cam already said, so does bandwidth. But 900 is a good compromise. I've got 900MHz gear and am very pleased with it's performance, especially when using an 8dbi path antenna. I would say the rx antenna is more important than the output power of the tx too. Andy
  2. Hi Phil, I bought a Sony DCR-IP7E for this purpose. It is actually a Micro-MV video recorder, and not Mini-DV, but the quality is the same. The tapes are like dictaphone tapes, very small. I got it for about £140 off eBay. It has an AV input on it which you can connect to your receiver, but best of all, it is very small and easily fits in the palm of your hand. AFAIK, it is one of the smallest tape camcorders that there is. Originally retailed for £1600! Andy.
  3. Out of interest, I just found this on this page: http://www.ofcom.org.uk/static/archive/ra/..._info/ra365.htm S5.328 The band 960 - 1215 MHz is reserved on a world-wide basis for the use and development of airborne electronic aids to air navigation and any directly associated ground-based facilities. You could argue that to all intents and purposes, flying FPV in this band is an 'electronic aid'.
  4. I recently bought a pair of R Vision 5.0 goggles from Range Video for $260. These are the only goggles I have ever had, and to be honest, the quality is a bit disappointing. The image is only really clear in the centre of the field of view. Around the outside edges I get these odd chromatic defects, where lines appear to have colours either side of them. Not sure if this is normal or not really. I was after a pair of Sony Glasstrons for ages, but they are so rare now. Just that Sony gear is usually pretty good.
  5. Yeah, agreed.. Best to stick to the power levels that are required for the task in hand, which, if just flying around a normal field with a twinstar, 10mw @ 2.4ghz would most likely suffice.. Better order some 2.4 gear from Range video then! heh.
  6. That is harsh. Although, I would have thought the liklihood of being imprisoned, or even fined would be quite remote given that it would be almost impossible to track down a moving object?
  7. On the subject of legality, what is the worst that can happen if you start using more powerful gear, or gear on the 900mhz band for example?
  8. People cut the red wire (+5v) so that there's not two BEC (voltage regulators) connected in parallel. I haven't cut any BEC wires on my setup and it's fine, probably because the output voltages of each ESC are equal. (The ESCs are identical though).
  9. Peaps

    360 Degree View

    Hi Scott, I really like the 360° servo, I could see that I will be trying to do one of these. What parts did you use then? It looks really well done. Andy.
  10. I'm using a Twinstar for my FPV/UAV platform also. I am employing a pair of Emax 2810/12 brushless motors. They are 300W each. Should be able to keep the plane in level flight. I estimate the total AUW to be in the region of 2500g with the 10Amp hours worth of batteries.. Andy
  11. Hi RadioHound, What Pic basic are you using? I used to use meLabs Pic Basic Pro, but got frustrated with their lack of development. I have just bought Proton Basic which is continually developed and handles 32bit floating point maths with built in trig functions like atan and cos. I am planning to use the spherical law of cosines to find the bearing to the destination waypoint. Andy.
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