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Old Apr 28, 2010, 08:07 AM
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Subjective tests between Lawmate and Fox 1.2/1.3Ghz systems.

Actually these subjective tests were done more than a year ago by mmormota in this thread here:

http://www.rcgroups.com/forums/showt...1018434&page=2

The test was between the Lawmate 500mW and the Inesun 800mW (Fox). I thought I'd bring this old thread up as it makes interesting reading to some that may have missed it. Some other related old threads:

http://www.rcgroups.com/forums/showthread.php?t=983658
http://www.rcgroups.com/forums/showthread.php?t=1054179

Before BOB these were the threads that led me to use the Fox 1.3Ghz.

ps It seems you cant post or reply to threads that are more than 360days old.
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Old Apr 28, 2010, 01:01 PM
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okay, not that much info about rx/tx equipment, actually.
gonna get these two sets:
http://www.sunsky-online.com/view/13...ransmitter.htm
http://www.sunsky-online.com/view/13...ransmitter.htm
decided to get both as I need two receivers.
any cheap places for getting good small cameras?
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Old Apr 28, 2010, 01:18 PM
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This seems to be a good source for cheap, small cameras:

http://www.securitycamera2000.com/se...y=board+camera
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Old Apr 29, 2010, 01:50 AM
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Quote:
Originally Posted by карлсон View Post
okay, not that much info about rx/tx equipment, actually.
gonna get these two sets:
http://www.sunsky-online.com/view/13...ransmitter.htm
http://www.sunsky-online.com/view/13...ransmitter.htm
decided to get both as I need two receivers.
any cheap places for getting good small cameras?
Those are Fox combos, although I think the 700mW or 800mW ones will give you better range with the video tx being the same size or smaller. I have the 100mW combo, tx does 1.280GHz without jumper on.

For cheap good cameras take a look at these two threads:

http://www.rcgroups.com/forums/showt...ight=25+camera

http://www.rcgroups.com/forums/showt...ight=25+camera
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Old Apr 29, 2010, 02:32 AM
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masam54, thanks for the links,
what's the range you get with that 100mW combo? and what are actually the bands?
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Old Apr 29, 2010, 03:11 AM
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Originally Posted by карлсон View Post
masam54, thanks for the links,
what's the range you get with that 100mW combo? and what are actually the bands?
For the 100mW I'm using in my FPV 1/10 4X4 truck driving around the house, so I dont really know what's the max range is like.

Playing around with the jumpers so far I've managed to get:
 1.010G 1.040G 900MHz CH 2,3
 1.080G 1.120G 1.160G 1.200G 1.2GHz CH4,5,6,7
 1.240G 1.280G 1.3GHz CH8,9
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Old Apr 29, 2010, 04:42 PM
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Thanks! We're discussing what actual bandwidth and modulation are used for video transmission in 1.2GHz and 2.4GHz bands. Are they basically the same and differ only in frequencies? Some people say, the actual bandwidth in 2.4 gear is 8MHz, while in 1.2GHz and 900MHz the effective bandwidth is somewhat 6MHz. Any experts?
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Old May 12, 2010, 09:49 PM View Post
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Old May 12, 2010, 11:14 PM
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Old Jul 28, 2010, 03:54 PM
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Quote:
Originally Posted by карлсон View Post
Thanks! We're discussing what actual bandwidth and modulation are used for video transmission in 1.2GHz and 2.4GHz bands. Are they basically the same and differ only in frequencies? Some people say, the actual bandwidth in 2.4 gear is 8MHz, while in 1.2GHz and 900MHz the effective bandwidth is somewhat 6MHz. Any experts?
Late reply, but if anyone still needs to know...

The video is 3.5 to 4 mhz.
The audio subcarrier is 5.5 to 6.0 mhz

The total bandwidth is 18 to 20 mhz

Cliff
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Old Jan 20, 2011, 07:46 AM
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Originally Posted by theothercliff View Post
Late reply, but if anyone still needs to know...

The video is 3.5 to 4 mhz.
The audio subcarrier is 5.5 to 6.0 mhz

The total bandwidth is 18 to 20 mhz

Cliff
I would say total bandwidth (video + audio) is between 5 and 8 Mhz ( http://en.wikipedia.org/wiki/PAL ).

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Old Jan 20, 2011, 08:40 PM
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Originally Posted by flipflap View Post
I would say total bandwidth (video + audio) is between 5 and 8 Mhz ( http://en.wikipedia.org/wiki/PAL ).
That's the AM bandwith, but our Tx's are FM.
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Old Jan 21, 2011, 11:12 PM
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I have come to the conclusion

that I would be better off with a lawmate system
rather than a fox system

I wish I new this two years ago when I frst started out with fpv

Pay the extra $ it is well worth it, don't waste your time and money
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Old Jan 24, 2011, 03:21 AM
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very good conclusion and useful suggestion...
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