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| [#55] 玩fm tuner 但屋企沒有 75omns入牆插頭............ #53 Yes I have an old radio , which may never work again . And having those tuning cap... Seem fun to have an antenna As such Shall be the future fun project Thxxx thxxx Haha |
Hahayanyan 正式會員86.xxx.xxx.47 |
2025-11-14 15:43 | |
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| [#54] 玩fm tuner 但屋企沒有 75omns入牆插頭............ 我將牆身電視天線位插牌拆走，更换一個两位，其中一個比 FM Tuner, 一般賣电器材料有售，不用$50, 鴨寮街多間賣零件店有售。 |
JC8852 正式會員 124.xxx.xxx.53 |
2025-11-14 12:59 |
| [#53] 玩fm tuner 但屋企沒有 75omns入牆插頭............ 0.1uF capacitor is not appropriate for that purpose. The picture below shows the correct way of such tuning capacitor. The VC-variable capacitor for FM radio band shall be around 20-250pF and that can be found in old fm tuners. Antenna tuning is simple by using the NanoVNA which is very cheap and useful.  |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-14 06:46 |
| [#52] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Why not .to try..nothing to lose hah This is a 0.1uf 啱啱有粒喺枱面 After adding it... The 92.55 station signal reduced a little bit.. And 101.92 cannot get any signal , but 100.15 ok , weak but enough strength for stereo reception  最後修改時間: 2025-11-13 22:28:17 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 22:14 |
| [#51] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Haha thx thx thx lala So nice to have a selector ...haha Feasible for the small loop to be 90 degree haha or I should find the cap value ... Shall make that change a little bit later.. If need , may able to find a suitable cap from some broken toys Fun Haha 最後修改時間: 2025-11-13 22:01:47 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 21:56 |
| [#50] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Ham Radio 發燒友通常會加配antenna selector, 去選擇不同的directional antenna. 前題是所有antenna不會互相干擾，而大小Loop在一個平面上的，會互相干擾，所以大loop 通常需要tuning cap.去配合小loop.  |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-13 20:55 |
| [#49] 玩fm tuner 但屋企沒有 75omns入牆插頭............ 我相信，有些發燒友 may have diversity嘅裝置，至少兩條天線去選擇 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 20:08 |
| [#48] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Interesting The smaller loop is the 1/2 wave for around 92Mhz The big loop is the full for around 100 MHz With both connect parallel 92.55 MHz station getting stronger signal However I lost the 101.92 When using the big loop only, I get both 92.55 and 101.92 with reasonable reception Seem the delta between the signal strength at around 92 and 101 affect the reception of 101 range ... First feeling...if I find a way to make the smaller loop less good.. that dual loop may work haha (I guess it is easier to make one less good than make one better ..haha) 最後修改時間: 2025-11-13 19:45:07 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 19:43 |
| [#47] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Thx thx thx lala Shall read your given reference, love to learn haha thx thx thx And shall make some more haha A dual element just finished  最後修改時間: 2025-11-13 19:18:06 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 19:16 |
| [#46] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Here's a good reference for Moxon FM antenna:  |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-13 17:47 |
| [#45] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Better...less hiss in theory 我應該可以加多兩個唔同element, one more loop at different sizes or even a dipole Fun to try later today Haha  最後修改時間: 2025-11-13 16:50:04 |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 16:37 |
| [#44] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Middle of the wall is better,signal is weaker at the wall , luckily still ok |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 08:11 |
| [#43] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Hallelujah！Matter too close to wall？ |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-13 08:07 |
| [#42] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Family said..OMG Haha haha Better now..behind a guitar haha  |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-13 06:13 |
| [#41] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Jesus cross！ |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-13 05:58 |
| [#40] 玩fm tuner 但屋企沒有 75omns入牆插頭............ Haha make one this morning Reasonable reception without need of amplifier..from 90 to 110MHz Fun and quick to make..and it is a loop Was the first test..in the middle of the room and now right on the wall behind a guitar.. Try try ..if u have some spare wire and some material.. to mount the wire..it shall take less than 20 mins to make too  |
Hahayanyan 正式會員 86.xxx.xxx.47 |
2025-11-12 21:10 |
| [#39] 玩fm tuner 但屋企沒有 75omns入牆插頭............ 需要留意接收地點和FM發射站位置，有可能需要指向性高的天線：  |
LaLaLam 會員 116.xxx.xxx.134 |
2025-11-12 07:44 |
| [#38] 玩fm tuner 但屋企沒有 75omns入牆插頭............ 用quad fm3聽古典台訊號好弱（已經用左外置天線）其他台訊號好強，請問各位師兄有咩解決方法？ |
Mgo3 會員 42.xxx.xxx.197 |
2025-11-11 21:47 |
| [#37] 玩fm tuner 但屋企沒有 75omns入牆插頭............ anyone still play hiend tuner? |
tingmoon 會員 219.xxx.xxx.142 |
2024-09-02 16:32 |
| [#35] 玩fm tuner 但屋企沒有 75omns入牆插頭............ MC2兄 此類天線鴨記有售。 其實，户內小型FM天線=接收上的妥協。 所以要有最佳接收特性，Yagi天線很多時需要很長(因有很多組directors)，户外水平擺放，看似長長魚骨，較新的多幢式大厦公契(Deed of Mutual Covants)，通常不會允許作户外安裝的(伸延出外牆)，這方面自已要小心查證一下。 有興趣可search "Yagi Uda Antenna"，看看此兩位日本人幾有智慧。 最後修改時間: 2011-07-28 14:19:55 |
黃思璁 正式會員 112.xxx.xxx.35 |
2011-07-28 14:16 |
