![\"\"](\"https:\/\/www.kawauchi.homeip.mydns.jp\/jh0cjh\/blog\/wp-content\/uploads\/2023\/07\/PXL_20230707_030341769_R.jpg\")
<\/a><\/p>\n\u307e\u305a\u30ea\u30b0\u306e\u30b0\u30e9\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u53d6\u308a\u307e\u3059\u3002\u3000\u30b0\u30e9\u30f3\u30c9\u30e9\u30a4\u30f3\u306f\u8907\u6570\u672c\u7528\u610f\u3059\u308b\u3088\u308a\u308210m\u306e\u3082\u306e\u30921\u672c\u306e\u307b\u3046\u304c\u3044\u3044\u3068\u3044\u3046\u60c5\u5831\u3092JM1NCT\u5c40\u304b\u3089\u5f97\u30661\u672c\u3060\u3051\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u30000.3sq\u304f\u3089\u3044\u306e\u7d30\u3044\u3082\u306e\u3067OK\u3067\u3059\u3002<\/p>\n
\u30ea\u30b0\u306eBNC\u30b3\u30cd\u30af\u30bf\u306bL\u578b\u30a2\u30f3\u30b0\u30eb\u3092\u4f7f\u3063\u3066\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002\u3000\u53d6\u308a\u4ed8\u3051\u305f\u3060\u3051\u3067\u306f\u30a2\u30f3\u30c6\u30ca\u304c\u81ea\u7acb\u3067\u304d\u307e\u305b\u3093\u306e\u3067DIY\u306e\u5e97\u3067\u8abf\u9054\u3057\u305fL\u578b\u30a2\u30f3\u30b0\u30eb\u3068\u30e1\u30ac\u30cd\u30af\u30ea\u30c3\u30d7\u3067\u4fdd\u6301\u3059\u308b\u30b8\u30b0\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002<\/p>\n \u30a2\u30f3\u30c6\u30ca\u3092\u4e0a\u306b\u4f38\u3070\u3057\u3066\u4f7f\u3046\u5834\u5408\u306f\u30e1\u30ac\u30cd\u30af\u30ea\u30c3\u30d7\u3067\u4fdd\u6301\u3059\u308b\u90e8\u5206\u304c\u7d30\u3044\u306e\u3067\u554f\u984c\u306a\u3044\u306e\u3067\u3059\u304c\u3001\u6ce2\u9577\u304c\u77ed\u3044\u5834\u5408\u306f\u30b3\u30a4\u30eb\u304c\u4e0b\u306e\u307b\u3046\u306b\u4f4d\u7f6e\u3057\u307e\u3059\u306e\u3067\u30e1\u30ac\u30cd\u30af\u30ea\u30c3\u30d7\u3067\u631f\u3080\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u306e\u3067\u3053\u306e\u5199\u771f\u306e\u3088\u3046\u306b\u6d17\u6fef\u3070\u3055\u307f\u3092\u304b\u307e\u305b\u3066\u4fdd\u6301\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n \u30c0\u30a4\u30dd\u30fc\u30eb\u30a2\u30f3\u30c6\u30ca\u306b\u6bd4\u3079\u308b\u3068\u98db\u3073\u3082\u805e\u3053\u3048\u3082\u3044\u307e\u3072\u3068\u3064\u3067\u3059\u304c\u3001\u3053\u308c\u3067\u5341\u5206\u98db\u3093\u3067\u304f\u308c\u307e\u3059\u3002<\/p>\n Normally I’m using linked dipole antenna for SOTA operation. But in some sharp summits, does not have enough space to extend dipole antenna, we have to consider alternatives, because of its size and possibly embarrasing to others on the summit. In such a case, I’m using RHM8B antenna Diamond Antenna made in such small space summit.<\/p>\n RHM8B consists of two parts.\u00a0 One is loading coil (black part) and another is telescopic antenna (shilver part) to be attached on top of coil.\u00a0 Other than antenna strongly recommend to have ground line. Also antena support to erect itself is very usefull.<\/p>\n First ground line to be attached any parts of rig ground or antenna ground.\u00a0 Ground line was tested by JM1NCT Aki san and better to have single 10 m ground line rather than shorter multiple ground lines.\u00a0 0.3mm sq or less line is workable.<\/p>\n Antenna attached to rig with BNC L attachment. But antenna is not fixed by BNC connector itself then I made a jig to support the antena erection.<\/p>\n Jig is configured with 2 L metal plate and paper clip.<\/p>\n When it use with lower frequency band coil part is extended and locate upper position then paper clip is fine to hold but in case high band paper clip can not hold the antenna due to thickness of the coil part.\u00a0 Then I use laundry clip for the high band.<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n
\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n