question on range…

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    • July 26, 2002 at 6:14 am #9139
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      I have 2 OEM regular bit charGs – one 45Mhz and one 27Mhz. Both running 2.2 motors. From what I see from inside, they dont have the cripple capacitor but one has a lot more in range. ANy idea why that is? The gears are different and thats about it really.

    • July 26, 2002 at 10:00 am #14706
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      frequency is the answer… A 45 Mhz signal is nearly half the size of the 27 Mhz signal so the grossly undersized and terribly inefficient antenna on the 45 Mhz car does a little bit better job of grabbing the signal. To put it in perspective…. a 27 Mhzwavelength is about 32 feet peak to peak. To get a good signal you want a full wave,3/4, 1/2, or 1/4 of the total wavelength. The old 8cm antenna on the the car is doing the best it can do. it should really be at least 8 feet long.

      Hope this helps

      Tai

    • July 26, 2002 at 1:34 pm #14709
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      So as a rule of thumb, the higher the frequency, the better the range?

    • July 26, 2002 at 4:31 pm #14711
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      Theoretically:smiley1:

      As long as the transmission power is the same (the transmitter may have a higher output at lower freq)

    • July 26, 2002 at 6:19 pm #14713
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      i find my 57mhz rx7 gets about 8 metres, which is not bad.

      i also have 35mhzand 45mhz boosters, and they both only reach 3-4m!!!

      gave them all nice long new cat5 antennas, and it didnt make any noticeable difference. i also put a longer wind-up wire on the booster controller, but that did not change things either.

      the next step is to find a telescopic antenna that will fit nicely in the controller! (been looking but have not found anything yet)

    • July 29, 2002 at 1:37 pm #14765
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      I wouldn’t mind trying to boost the trasmission power rather than working on the reception. Maybe someone could look how wind up the wick on the pissy transmitter.

      Tai

    • July 30, 2002 at 12:56 am #14783
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      yeah my friend suggested that I stick 4 x AA batteries on the controller with a potentiometer across the added 2 batteries to tweak the voltage input to see if the range can be hiked up. As it is, my OEM controller has a much bigger range as standard than the 4 channel booster controller….gutted that is the case, but I’m using it mush more because of it.

      But I will try getting a long extending antenna first to see if that improves things.

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