影音天地主旨 ﹝請按主旨作出回應﹞  下頁  尾頁 寄件者 傳送日期 由舊至新 由新至舊
[#1] Magnum Dynalab FM Tuner Fans Club    
個主旨名稱會不會長左少少?
~__~"



最後修改時間: 2012-12-20 19:25:47
黃思璁
個人訊息 正式會員
1.xxx.xxx.107
2012-12-20 19:14
[#2] Magnum Dynalab FM Tuner Fans Club    
How to calculate the optimum length of the FM antenna?

Divide the speed of light (3 x 108 m/s) by the frequency of the wave in Hertz. Since the FM radio frequency for HK ranges from 88 MHz to 108MHz, the theoretically ideal length would be from 2.78 to 3.41 metre in order to receive the full wavelength of the FM signals. When it may not be practical to build a full wavelength antenna, we could go for 1/2(half wave) or 1/4 (quarter wave)of it.

The length of ST-2 is 154.2 cm which is about the half wavelength of 98MHz, the middle of 88-108MHz. Length does matter for FM antenna. Whatelse? Let's discuss later...

最後修改時間: 2012-12-27 19:11:03
黃思璁
個人訊息 正式會員
1.xxx.xxx.107
2012-12-27 19:08
[#3] Magnum Dynalab FM Tuner Fans Club    
typo...

(3 x 10^8 m/s)...
黃思璁
個人訊息 正式會員
1.xxx.xxx.107
2012-12-27 19:49
[#4] Magnum Dynalab FM Tuner Fans Club    
Support. User myself.
eddiey4k
個人訊息 正式會員
219.xxx.xxx.44
2012-12-29 03:26
[#5] Magnum Dynalab FM Tuner Fans Club    
現在這個國內台,歌曲都幾正...

黃思璁
個人訊息 正式會員
1.xxx.xxx.165
2013-03-02 17:11
[#6] Magnum Dynalab FM Tuner Fans Club    
黃兄,想請教fanfare天線在那裡買呢?謝謝!
cat7
個人訊息 正式會員
14.xxx.xxx.51
2013-03-02 22:35
[#7] Magnum Dynalab FM Tuner Fans Club    
Fanfare FM-2G?

室內定室外用?


最後修改時間: 2013-03-02 23:02:37
黃思璁
個人訊息 正式會員
1.xxx.xxx.165
2013-03-02 22:50
[#8] Magnum Dynalab FM Tuner Fans Club    
謝謝黃兄,明天致電給你。
cat7
個人訊息 正式會員
203.xxx.xxx.96
2013-03-03 01:05
[#9] Magnum Dynalab FM Tuner Fans Club    
Hi 黃思璁 c-hing,

I live in Clearwater bay. I am very headacde, how to receive FM with good condition.

Actually, the FM signal is so weak in Clearwater bay. Any good solution ?

Many thanks !!
SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-03 15:10
[#10] Magnum Dynalab FM Tuner Fans Club    
SamWKF Hing

What tuner and antenna are you using?
How did you placed your antenna?
What kind of building (low-rise or high-rise)?
What is the "relatively" best RTHK station now?
黃思璁
個人訊息 正式會員
1.xxx.xxx.165
2013-03-03 15:41
[#11] Magnum Dynalab FM Tuner Fans Club    
Thanks 黃思璁 c-hing,

I use Technics tuner, buy from Re33 second hand forum.

I live at 3/F, this is a village house, little view to the Clearwater bay beach. The existing antenna has only TV signal, no FM output from the wall socket. But I don't care since I listen radio is at my room.

I tried so many methods such as install an indoor TV/FM amp, no use, signal is still weak.

Right now, I use a 75 ohm antenna, throw out to the window, then, at least receive one level (meter has five levels for receiving sigmal's quality), some time has stereo, but always has no. The best stations I can receive are : RTHK #1 and 2, some time has stereo. For Comm #1 (88.1), weak, with sha..sha... sound.

Some c-hings recommend me to try ST-2 or Fanfare, but which one is better ??


SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-03 16:02
[#12] Magnum Dynalab FM Tuner Fans Club    
SamWKF

"an indoor TV/FM amp, no use, signal is still weak"

without a proper FM antenna, any further amplification is of no use.

Since you live on 3rd floor, you should place an FM antenna on the roof, high enough to avoid any blockage of neighbouring buildings. There are three major types you could find on the market: Yagi, dipole and omni(e.g. ST-2).


For your case:
You are recommended to find an FM Yagi, say, in SSP district.

Advantage: max gain possible when pointing at the near FM station transmitter. Especially good for roof-top application where you can swing its direction in almost 360 degree.

Disadvantage: relatively huge size. Due to it's directionality, not effective if the best direction has already been completely blocked or the (antenna) swing angle couldn't be adjusted at all. Not all stations come from the same direction. One yagi may not be enough to cover the range of 88-108MHz.

Caution:
Find a qualified technican to install. Outdoor application of antenna is subject to electrical shocks by lightning, and could be lethal.




最後修改時間: 2013-03-03 18:20:15
黃思璁
個人訊息 正式會員
1.xxx.xxx.165
2013-03-03 18:08
[#13] Magnum Dynalab FM Tuner Fans Club    
Hi C-hing,

Thanks a lot !!
SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-03 19:28
[#14] Magnum Dynalab FM Tuner Fans Club    
黃思璁 c-hing,

Can you give me a list for HK available stations, such as 88.1 = com #1, 92.6 = RTHK #1, I loss the table. Many thanks !!
SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-03 21:52
[#15] Magnum Dynalab FM Tuner Fans Club    
I seldom use Wikipedia as a reference in my work. But this link seems to be useful for amateur use and quick reference.

http://en.wikipedia.org/wiki/List_of_radio_stations_in_Hong_Kong

FYI, my tuner can receive RTHK 4's maximum signal strength in 97.6, 98.4, 98.5, 98.7, 98.9MHz respectively with minor interferences. Some FM stations from the Mainland, not shown on the list, are quite nice for listening at times, too.



最後修改時間: 2013-03-03 22:13:04
黃思璁
個人訊息 正式會員
1.xxx.xxx.165
2013-03-03 22:04
[#16] Magnum Dynalab FM Tuner Fans Club    
SamWKF hing, fyi


Radio Television Hong Kong (RTHK)

RTHK Radio 1: in Cantonese / Mandarin on 92.6-94.4 MHz
RTHK Radio 2: in Cantonese on 94.8-96.9 MHz
RTHK Radio 3: in English on 567 & 1584 kHz and 97.9, 106.8 & 107.8 MHz
RTHK Radio 4: in English & Cantonese on 97.6-98.9 MHz
RTHK Radio 5: in Cantonese / Mandarin on 783 kHz and 92.3, 99.4 & 106.8 MHz
RTHK Radio 6: relays BBC World Service in English 24h on 675 kHz
RTHK Radio 7 (Putonghua Channel): in Mandarin on 621 kHz and 100.9 & 103.3 MHz


Hong Kong Commercial Broadcasting Company Ltd (HKCR)

HKCR CR1 (Supercharged 881): in Cantonese on 88.1-89.5 MHz
HKCR CR2 (Ultimate 903): in Cantonese on 90.3-92.1 MHz
AM 864 in English and limited Nepalese on 864 kHz


Metro Showbiz: in Cantonese on 99.7-102.1 MHz
Metro Finance: in Cantonese on 102.4-106.3 MHz
Metro Plus: in English, Mandarin, Filipino, Hindi and Indonesian on 1044 kHz AM Stereo

bambino
個人訊息 正式會員
59.xxx.xxx.150
2013-03-03 22:25
[#17] Magnum Dynalab FM Tuner Fans Club    
If the signal is weak, a compromising way is to use digital tuners (I am not talking about DAB but those with digial display self searching type from the 80s). They can sound flatter and as good but can pick up signal better.

Happy listening.

最後修改時間: 2013-03-04 13:44:13
BenYC
個人訊息 正式會員
112.xxx.xxx.56
2013-03-04 13:39
[#18] Magnum Dynalab FM Tuner Fans Club    
黃思璁 c-hing,

Thanks for your list ...


SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-04 21:05
[#19] Magnum Dynalab FM Tuner Fans Club    
Ben c-hing,

I have tried internet radio, however, I still favour analogue sound. Thanks for your advise
SamWKF
個人訊息 正式會員
219.xxx.xxx.70
2013-03-04 21:07
[#20] Magnum Dynalab FM Tuner Fans Club    
Sam Hing

You are welcome.
黃思璁
個人訊息 正式會員
202.xxx.xxx.214
2013-03-04 22:15
主旨內容一共有 2 頁,每頁顯示 20 個信息,選擇頁數:  下頁  尾頁
按照傳送日期顯示:由舊至新由舊至新  由新至舊由新至舊
最新資訊 - 市場
百搭高級音響有限公司The Sound Chamber 2025-05-24

最新資訊 - 市場
駿韻音響有限公司Wise Sound Supplies Ltd. 2025-05-24

最新資訊 - 影音
DELA 宣布為旗下音響專用 Ethernet 網路線 C100 新增 5 公尺型號 2025-05-23

最新資訊 - 影音
支援 Qobuz Connect,Lyngdorf Audio 發布 TDAI-3400 全新軟體更新 2025-05-22

最新資訊 - 影音
Astell&Kern x Roon 宣布高清音樂播放器 PD10 正式支援 Roon Ready 功能 2025-05-21

最新資訊 - 影音
Innuos 發表全新旗艦音樂串流播放器 / 伺服器 Nazaré 2025-05-19

最新資訊 - 影音
Brinkmann 宣布旗下所有電子產品推出全新配色選項 2025-05-17

最新資訊 - 影音
Lyngdorf Audio 推出全新串流合併式放大器 TDAI-2210 2025-05-16