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In Topic: 3Racing Sakura D3 CS
17 September 2012 - 02:24 PM
its none too shabby, definitely far superior to a TT01. 3Racing's plastics are dense & very tough.
not quite fair to compare to TRFs & other CF+alloy beasts
not quite fair to compare to TRFs & other CF+alloy beasts
In Topic: what is frequency #8 for 27am radio?
21 August 2012 - 04:53 AM
yes, that's the design of a superheterodyne radio system
the TX needs the xtal on 27.145MHz (the actual # stamped on the xtal metal case, ignore any printed sticker)
for the RX to correctly receive & decode that transmission, it is tuned to 27.145 - 0.455 = 26.690MHz.
(if you put 27.145 into the RX, it'll be expecting to hear from a TX on 27.600)
(there are also 'reflections' that it is sensitive to... so 27.145 + 0.455 = 27.600 *might* also work but
it will be a weaker communication... or if there's a transmission ~27.600 then you'll be drowned out)
if ever you've got a huge variety box of 100s of xtals, just find any 2 of 455kHz apart and you've got a pair
Radio gear is roughly "tuned" to a certain base band though eg 27MHz, 29MHz, 40MHz, 72MHz
so you need to keep to the same family, otherwise your system will be detuned.
With surface non-flying toys you can get quite far away from base though
& most will still work eg 40MHz pretty much runs anything 39-41MHz
some older gear can be retuned to different band/s... might need some parts changed though,
which could be as rare to find today than somebody old/experienced enough to do the surgery
the TX needs the xtal on 27.145MHz (the actual # stamped on the xtal metal case, ignore any printed sticker)
for the RX to correctly receive & decode that transmission, it is tuned to 27.145 - 0.455 = 26.690MHz.
(if you put 27.145 into the RX, it'll be expecting to hear from a TX on 27.600)
(there are also 'reflections' that it is sensitive to... so 27.145 + 0.455 = 27.600 *might* also work but
it will be a weaker communication... or if there's a transmission ~27.600 then you'll be drowned out)
if ever you've got a huge variety box of 100s of xtals, just find any 2 of 455kHz apart and you've got a pair
Radio gear is roughly "tuned" to a certain base band though eg 27MHz, 29MHz, 40MHz, 72MHz
so you need to keep to the same family, otherwise your system will be detuned.
With surface non-flying toys you can get quite far away from base though
& most will still work eg 40MHz pretty much runs anything 39-41MHz
some older gear can be retuned to different band/s... might need some parts changed though,
which could be as rare to find today than somebody old/experienced enough to do the surgery
