Hen long Antennas
04-05-2012, 02:05 PM
#1
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Hen long Antennas
I have several HL tanks with different frequenciesand all the external tank antennas are exactly the same length 13 and 1/8 inch. I thought you
had to have different length antennas for different frequencies. The transmitters all have the same antennas too. What's the explaination?
had to have different length antennas for different frequencies. The transmitters all have the same antennas too. What's the explaination?
04-05-2012, 02:46 PM
#2
RE: Hen long Antennas
If you are talking about several different crystal sets, then the frequency shift is too small to bother with different length antennas.
The HL antenna / radio set-up is not the ideal set-up possable... it just works "good enough".
The ideal set-up is a 1/2 or 1/4 wavelength di-pole antenna tuned to the exact frequency. At 27mhz that's much too long to ride on a 1/16 scale tank.
2.4 ghz is short enough.
The HL antenna / radio set-up is not the ideal set-up possable... it just works "good enough".
The ideal set-up is a 1/2 or 1/4 wavelength di-pole antenna tuned to the exact frequency. At 27mhz that's much too long to ride on a 1/16 scale tank.
2.4 ghz is short enough.
04-05-2012, 03:29 PM
#3
RE: Hen long Antennas
Antenna length isn't as big a deal with AM radios as opposed to FM radios....but like Pah stated the difference is so small it's not worth worrying about. I generally cutt the Metal antennas in half (or less) and have had no appreciable degredation on range(maybe 25%) but who drives their tank from over 100ft away...?
04-05-2012, 03:34 PM
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RE: Hen long Antennas
You're right ...The higher the frequency , the shorter the wavelenht ; the shorter the antenna ....
Heng Long has set for i/32 wavelengh for their antenna ( as per the amateur vertical antenna calculator on this site : www.csgnetwork.com/antennaevcalc.html
Heng Long has set for i/32 wavelengh for their antenna ( as per the amateur vertical antenna calculator on this site : www.csgnetwork.com/antennaevcalc.html
04-05-2012, 04:29 PM
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RE: Hen long Antennas
ORIGINAL: DirtyBird69
Antenna length isn't as big a deal with AM radios as opposed to FM radios....but like Pah stated the difference is so small it's not worth worrying about. I generally cutt the Metal antennas in half (or less) and have had no appreciable degredation on range(maybe 25%) but who drives their tank from over 100ft away...?
Antenna length isn't as big a deal with AM radios as opposed to FM radios....but like Pah stated the difference is so small it's not worth worrying about. I generally cutt the Metal antennas in half (or less) and have had no appreciable degredation on range(maybe 25%) but who drives their tank from over 100ft away...?
So what your telling me as I can cut that long ugly antenna in half with no real issues? I'll cut that puppy tonight!!
