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| Awexbeijing |
 Posted: Tue Nov 09, 2010 5:40 pm Post subject: pertanyaan wireless system VHF dan UHF guitar/ bass |
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Joined: 28 Jul 2008
Posts: 233
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aloha i-bander
sy nak tumpang tanya sikit..ada kawan sy nak beli wireless guitar/bass system..dia berminat dengan satu model keluaran jepun samson airline 77 handled
nak tanya la sikit dalam keluaran model tersebut ada dinyatakan ada model UHF dan ada model VHF....
apa beza antara dua system wireless tersebut ye kalau berada di atas stage atu pun dibawah stage ato kat belakang stage..
mana yg terbaik..adakah ia ada sangkut paut dengan frekuensi amp ato pun frekuensi yg datang dari guitar
sekian ma kasih..oh ya kawan sy tu pakai guitar yamaha RG yg dah pakai pick up humbukcer aktif dan strat fender
mana lagi elok beli yg VHF or UHF....sbb apa pilihan samson sbb yg ni agak murah sikit utk used item banding dengan line 6 or model2 lain
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| ETERNAL |
| Posted: Tue Nov 09, 2010 5:49 pm Post subject: |
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Joined: 01 Aug 2005
Posts: 3382
Location: Dreamland
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aku google je pasal tak reti bab ni...
kalau aku.. aku pilih UHF kot.. hehe.. tanak aku nanti clash ngan radio signal.. haha
http://wiki.answers.com/Q/What_is_the_difference_between_uhf_and_vhf
From a US. Dept. of Commerce poster:
* VLF (Very Low Freq.) = 0 - 30kHz (audio)
* LF (Low Freq.) = 30 - 300 kHz (eg, Loran)
* MF (Medium Freq.) = 300kHz - 3MHz (eg, AM broadcast)
* HF (High Freq.) = 3MHz - 30MHz ("short wave")
* VHF (Very High Freq.) = 30MHz -300MHz (eg, FM broadcast, analog TV (VHF), civil aviation, analog public service)
* UHF (Ultra High Freq.) = 300MHz - 3GHz (eg, analog TV (UHF), analog cellphones)
* SHF (Super High Freq.) = 3GHz - 30GHz
http://ezinearticles.com/?UHF-Versus-VHF---Which-Two-Way-Radio-Frequency-is-Better?&id=1328253
| Quote: | | VHF waves are not very good at finding their way around walls, buildings and rugged landscape. Therefore range will be significantly reduced for VHF radios in these environments. That may not necessarily be a problem if the range needed is only a few hundred feet. You can also add an external antenna to an indoor VHF base station that will reduce or eliminate this problem. |
| Quote: | | Both UHF and VHF radios are prone to line of sight factors, but VHF a little more so. The waves make it through trees and rugged landscapes, but not as well as UHF frequencies do. However, if a VHF wave and a UHF wave were transmitted over an area without barriers, the VHF wave would travel almost twice as far. This makes VHF easier to broadcast over a long range. If you are working mostly outdoors, a VHF radio is probably the best choice, especially if you are using a base station radio indoors and you add the external antenna. |
So Long range & open space = VHF
Close range & blocked area = UHF
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| Mixboy2105 |
| Posted: Wed Nov 10, 2010 3:04 am Post subject: |
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Joined: 21 Oct 2005
Posts: 366
Location: Kuala Lumpur
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Both UHF and VHF have it's own advantages and disadvantages. There are several factors for consideration such as signal congestion, location and cost. In essence though, there are no technical differences between the two.
However, I believe the majority wireless units in the market including the Samson Airline model you mentioned, are UHF. The primary advantage of UHF operation is that there is less chance of interference because of more available frequency spectrum.
In other words, don't worry about whether or not it is UHF/VHF. More important factors to consider are sound quality, robustness, battery life and cost.
You can read more about UHF vs VHF here :
http://www.audio-technica.com/cms/site/af9d127e26abf498/index.html
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| Awexbeijing |
| Posted: Thu Nov 11, 2010 11:36 am Post subject: |
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Joined: 28 Jul 2008
Posts: 233
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thanx for ur tips bro mixboy2105 \m/ and ma kasih bro eternal atas tipnya ya\m/
i'll choose for UHF....
memula igt benda ni ada sangkut paut dgn amps dan guitarnya frekuansi
rupanya berdasarkan more to environment.
\m/....
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