{"id":12007,"date":"2026-03-29T15:21:11","date_gmt":"2026-03-29T07:21:11","guid":{"rendered":"https:\/\/safarimw.com\/?p=12007"},"modified":"2026-06-18T14:29:11","modified_gmt":"2026-06-18T06:29:11","slug":"how-to-decode-the-exact-frequency-of-a-2-4ghz-rf-signal","status":"publish","type":"post","link":"https:\/\/safarimw.com\/vi\/how-to-decode-the-exact-frequency-of-a-2-4ghz-rf-signal\/","title":{"rendered":"Struggling with 2.4GHz Noise? Master Resolution Bandwidth Settings"},"content":{"rendered":"

G\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c t\u00ecm t\u00edn hi\u1ec7u trong b\u0103ng t\u1ea7n 2.4GHz \u1ed3n \u00e0o? V\u1edbi qu\u00e1 nhi\u1ec1u nhi\u1ec5u t\u1eeb Wi-Fi v\u00e0 Bluetooth, vi\u1ec7c c\u00f4 l\u1eadp m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 c\u1ea3m th\u1ea5y b\u1ea5t kh\u1ea3 thi. T\u00f4i s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n qua \u0111i\u1ec1u \u0111\u00f3.<\/p>\n

\u0110\u1ec3 t\u00ecm m\u1ed9t t\u00edn hi\u1ec7u 2.4GHz<\/a>1<\/a><\/sup> ch\u00ednh x\u00e1c t\u1ea7n s\u1ed1, s\u1eed d\u1ee5ng m\u1ed9t m\u00e1y ph\u00e2n t\u00edch ph\u1ed5<\/a>2<\/a><\/sup>. \u0110\u1eb7t t\u1ea7n s\u1ed1 trung t\u00e2m l\u00e0 2.45GHz v\u1edbi ph\u1ea1m vi 100MHz. Gi\u1ea3m b\u1edbt B\u0103ng th\u00f4ng \u0110\u1ed9 ph\u00e2n gi\u1ea3i (RBW)<\/a>3<\/a><\/sup> \u0111\u1ec3 c\u00f4 l\u1eadp c\u00e1c t\u00edn hi\u1ec7u v\u00e0 s\u1eed d\u1ee5ng m\u1ed9t marker \u0111\u1ec3 \u0111o t\u1ea7n s\u1ed1 c\u1ee7a \u0111\u1ec9nh cao nh\u1ea5t tr\u00ean m\u00e0n h\u00ecnh.<\/strong><\/p>\n

\"M\u1ed9t<\/p>\n

T\u00f4i th\u01b0\u1eddng nh\u1eadn \u0111\u01b0\u1ee3c nh\u1eefng c\u00e2u h\u1ecfi nh\u01b0 th\u1ebf n\u00e0y t\u1eeb kh\u00e1ch h\u00e0ng. M\u1eb7c d\u00f9 c\u00f4ng ty c\u1ee7a t\u00f4i t\u1eadp trung v\u00e0o s\u1ea3n xu\u1ea5t th\u00e0nh ph\u1ea7n RF<\/a>4<\/a><\/sup>, c\u00e1c k\u1ef9 s\u01b0 c\u1ee7a ch\u00fang t\u00f4i c\u0169ng l\u00e0 ng\u01b0\u1eddi d\u00f9ng th\u1ef1c t\u1ebf. Ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c t\u01b0\u01a1ng t\u1ef1, v\u00e0 ch\u00fang t\u00f4i th\u00edch chia s\u1ebb nh\u1eefng g\u00ec \u0111\u00e3 h\u1ecdc \u0111\u01b0\u1ee3c qua nhi\u1ec1u n\u0103m. Qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 nghe c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng vi\u1ec7c n\u1eafm b\u1eaft chi ti\u1ebft \u0111\u00fang l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 r\u00f5 r\u00e0ng v\u00e0 ch\u00ednh x\u00e1c. Tr\u01b0\u1edbc khi \u0111i v\u00e0o c\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3, h\u00e3y \u0111\u1ea3m b\u1ea3o b\u1ea1n c\u00f3 thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p cho c\u00f4ng vi\u1ec7c.<\/p>\n

B\u1ea1n c\u1ea7n nh\u1eefng c\u00f4ng c\u1ee5 g\u00ec \u0111\u1ec3 b\u1eaft \u0111\u1ea7u gi\u1ea3i m\u00e3 t\u00edn hi\u1ec7u RF?<\/h2>\n

S\u1eb5n s\u00e0ng ph\u00e2n t\u00edch t\u00edn hi\u1ec7u RF nh\u01b0ng ch\u01b0a bi\u1ebft c\u1ea7n nh\u1eefng c\u00f4ng c\u1ee5 g\u00ec? Ch\u1ecdn sai thi\u1ebft b\u1ecb l\u00e0 m\u1ed9t sai l\u1ea7m t\u1ed1n k\u00e9m m\u00e0 s\u1ebd kh\u00f4ng mang l\u1ea1i k\u1ebft qu\u1ea3 \u0111\u00fang. T\u00f4i s\u1ebd cung c\u1ea5p cho b\u1ea1n danh s\u00e1ch r\u00f5 r\u00e0ng.<\/p>\n

C\u00f4ng c\u1ee5 ch\u00ednh l\u00e0 m\u1ed9t m\u00e1y ph\u00e2n t\u00edch ph\u1ed5<\/a>2<\/a><\/sup>. B\u1ea1n c\u0169ng c\u1ea7n m\u1ed9t anten thi\u1ebft k\u1ebf cho b\u0103ng t\u1ea7n 2.4GHz v\u00e0 c\u00e1p RF ch\u1ea5t l\u01b0\u1ee3ng cao (v\u00ed d\u1ee5, SMA) \u0111\u1ec3 k\u1ebft n\u1ed1i anten v\u1edbi m\u00e1y ph\u00e2n t\u00edch. Ba m\u1ee5c n\u00e0y t\u1ea1o th\u00e0nh b\u1ed9 d\u1ee5ng c\u1ee5 c\u01a1 b\u1ea3n cho b\u1ea5t k\u1ef3 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u RF n\u00e0o.<\/strong><\/p>\n

\"C\u00e1c<\/p>\n

H\u00e3y xem x\u00e9t k\u1ef9 h\u01a1n t\u1eebng c\u00f4ng c\u1ee5 n\u00e0y. Ch\u1ecdn \u0111\u00fang c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p v\u1edbi ng\u00e2n s\u00e1ch v\u00e0 nhu c\u1ea7u c\u1ee7a b\u1ea1n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean. T\u00f4i nh\u1edb khi m\u1edbi b\u1eaft \u0111\u1ea7u, t\u00f4i \u0111\u00e3 c\u1ed1 g\u1eafng ti\u1ebft ki\u1ec7m chi ph\u00ed v\u1ec1 c\u00e1p, v\u00e0 \u0111i\u1ec1u \u0111\u00f3 khi\u1ebfn t\u00f4i m\u1ea5t h\u00e0ng gi\u1edd \u0111\u1ec3 c\u1ed1 g\u1eafng t\u00ecm t\u00edn hi\u1ec7u b\u1ecb m\u1ea5t tr\u01b0\u1edbc khi n\u00f3 \u0111\u1ebfn b\u1ed9 ph\u00e2n t\u00edch c\u1ee7a t\u00f4i.<\/p>\n

C\u00e1c C\u00f4ng C\u1ee5 Ch\u00ednh \u0111\u1ec3 T\u00ecm T\u00edn Hi\u1ec7u<\/h3>\n

Th\u00e0nh c\u00f4ng c\u1ee7a b\u1ea1n g\u1ea7n nh\u01b0 ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o ba thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng.<\/p>\n

    \n
  1. B\u1ed9 ph\u00e2n t\u00edch ph\u1ed5:<\/strong> \u0110\u00e2y l\u00e0 trung t\u00e2m c\u1ee7a thi\u1ebft l\u1eadp c\u1ee7a b\u1ea1n. N\u00f3 l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng v\u00e0 hi\u1ec3n th\u1ecb \u0111\u1ed9 m\u1ea1nh t\u00edn hi\u1ec7u<\/a>5<\/a><\/sup> al\u1ee3i nhu\u1eadn<\/a>6<\/a><\/sup>t\u1ea7n s\u1ed1 \u0111\u1ea7u ti\u00ean. H\u00e3y ngh\u0129 n\u00f3 nh\u01b0 m\u1ed9t c\u1eb7p m\u1eaft c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y s\u00f3ng v\u00f4 h\u00ecnh radio. B\u1ea1n c\u00f3 th\u1ec3 t\u00ecm c\u00e1c l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi ng\u00e2n s\u00e1ch nh\u01b0 Radio \u0111\u1ecbnh ngh\u0129a b\u1eb1ng ph\u1ea7n m\u1ec1m d\u1ef1a tr\u00ean USB (SDRs)<\/a>7<\/a><\/sup>, r\u1ea5t ph\u00f9 h\u1ee3p \u0111\u1ec3 h\u1ecdc t\u1eadp. \u0110\u1ed1i v\u1edbi c\u00f4ng vi\u1ec7c chuy\u00ean nghi\u1ec7p, m\u1ed9t b\u1ed9 ph\u00e2n t\u00edch \u0111\u1ec3 b\u00e0n chuy\u00ean d\u1ee5ng<\/a>8<\/a><\/sup> cung c\u1ea5p hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n nhi\u1ec1u v\u1ec1 \u0111\u1ed9 nh\u1ea1y v\u00e0 t\u1ed1c \u0111\u1ed9.<\/li>\n
  2. \u0102ng-ten:<\/strong> \u0102ng-ten l\u00e0 \u0111\u00f4i tai c\u1ee7a b\u1ea1n. N\u00f3 thu nh\u1eadn n\u0103ng l\u01b0\u1ee3ng RF t\u1eeb kh\u00f4ng kh\u00ed. \u0110\u1ed1i v\u1edbi t\u1ea7n s\u1ed1 2.4GHz, m\u1ed9t \u0103ng-ten dipole \u0111\u01a1n gi\u1ea3n ki\u1ec3u \"v\u1ecbt cao su\" ph\u00f9 h\u1ee3p cho m\u1ee5c \u0111\u00edch chung. Nh\u01b0ng n\u1ebfu b\u1ea1n s\u0103n t\u00ecm t\u00edn hi\u1ec7u y\u1ebfu ho\u1eb7c xa, m\u1ed9t \u0103ng-ten \u0111\u1ecbnh h\u01b0\u1edbng<\/a>9<\/a><\/sup> nh\u01b0 Yagi ho\u1eb7c \u0103ng-ten patch s\u1ebd ho\u1ea1t \u0111\u1ed9ng t\u1ed1t h\u01a1n nhi\u1ec1u.<\/li>\n
  3. C\u00e1p v\u00e0 B\u1ed9 chuy\u1ec3n \u0111\u1ed5i:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c d\u00e2y th\u1ea7n kinh k\u1ebft n\u1ed1i m\u1ecdi th\u1ee9. \u0110\u1eebng bao gi\u1edd xem nh\u1eb9 t\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00e1p ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t. M\u1ed9t c\u00e1p r\u1ebb ti\u1ec1n, m\u1ea5t m\u00e1t c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n. T\u00ecm ki\u1ebfm c\u00e1c c\u00e1p \u0111\u1ed3ng tr\u1ee5c \u00edt t\u1ed5n th\u1ea5t<\/a>10<\/a><\/sup> v\u1edbi c\u00e1c k\u1ebft n\u1ed1i ch\u00ednh x\u00e1c, th\u01b0\u1eddng l\u00e0 lo\u1ea1i SMA cho ph\u1ea1m vi t\u1ea7n s\u1ed1 n\u00e0y.<\/li>\n<\/ol>\n

    D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3ng gi\u00fap b\u1ea1n so s\u00e1nh c\u00e1c t\u00f9y ch\u1ecdn c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n\n\n\n\n
    C\u00f4ng c\u1ee5<\/th>\nL\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi ng\u00e2n s\u00e1ch<\/th>\nL\u1ef1a ch\u1ecdn chuy\u00ean nghi\u1ec7p<\/th>\n\u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n xem x\u00e9t<\/th>\n<\/tr>\n<\/thead>\n
    M\u00e1y ph\u00e2n t\u00edch ph\u1ed5<\/strong><\/td>\nSDR d\u1ef1a tr\u00ean USB (v\u00ed d\u1ee5: RTL-SDR, HackRF)<\/td>\nM\u00e1y ph\u00e2n t\u00edch \u0111\u1ec3 b\u00e0n (v\u00ed d\u1ee5: Keysight, R&S)<\/td>\nPh\u1ea1m vi t\u1ea7n s\u1ed1, B\u0103ng th\u00f4ng \u0110\u1ed9 ph\u00e2n gi\u1ea3i (RBW)<\/a>3<\/a><\/sup><\/td>\n<\/tr>\n
    \u0102ng-ten<\/strong><\/td>\n\u0102ng-ten Dipole \u0111a h\u01b0\u1edbng<\/td>\n\u0102ng-ten Yagi h\u01b0\u1edbng ho\u1eb7c Patch c\u00f3 \u0111\u1ed9 l\u1ee3i cao<\/td>\n\u0110\u1ed9 l\u1ee3i, H\u01b0\u1edbng h\u01b0\u1edbng, v\u00e0 Ph\u00f9 h\u1ee3p t\u1ea7n s\u1ed1<\/td>\n<\/tr>\n
    C\u00e1p<\/strong><\/td>\nC\u00e1p \u0111\u1ed3ng tr\u1ee5c RG58 ti\u00eau chu\u1ea9n<\/td>\nC\u00e1p LMR-400 ho\u1eb7c t\u01b0\u01a1ng t\u1ef1 c\u00f3 t\u1ed5n th\u1ea5t th\u1ea5p<\/td>\nM\u1ea5t t\u00edn hi\u1ec7u (dB tr\u00ean m\u00e9t), Ch\u1ea5t l\u01b0\u1ee3ng k\u1ebft n\u1ed1i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 thi\u1ebft l\u1eadp m\u00e1y ph\u00e2n t\u00edch ph\u1ed5 \u0111\u00fang c\u00e1ch?<\/h2>\n

    B\u1ea1n \u0111ang nh\u00ecn v\u00e0o m\u00e1y ph\u00e2n t\u00edch ph\u1ed5 c\u1ee7a m\u00ecnh, nh\u01b0ng t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec b\u1ea1n th\u1ea5y l\u00e0 m\u1ed9t m\u00e0n h\u00ecnh \u0111\u1ea7y nhi\u1ec5u. B\u1ea1n kh\u00f4ng th\u1ec3 t\u00ecm th\u1ea5y t\u00edn hi\u1ec7u c\u1ee7a m\u00ecnh trong h\u1ed7n lo\u1ea1n. T\u00f4i s\u1ebd gi\u1ea3i th\u00edch c\u00e1c c\u00e0i \u0111\u1eb7t ch\u00ednh \u0111\u1ec3 c\u1ea5u h\u00ecnh.<\/p>\n

    Tr\u01b0\u1edbc ti\u00ean, \u0111\u1eb7t T\u1ea7n s\u1ed1 Trung t\u00e2m th\u00e0nh 2.45 GHz v\u00e0 Ph\u1ea1m vi th\u00e0nh 100 MHz \u0111\u1ec3 xem to\u00e0n b\u1ed9 b\u0103ng t\u1ea7n ISM<\/a>11<\/a><\/sup>. Sau \u0111\u00f3, \u0111i\u1ec1u ch\u1ec9nh M\u1ee9c tham chi\u1ebfu cho \u0111\u1ebfn khi \u0111\u1ec9nh t\u00edn hi\u1ec7u g\u1ea7n \u1edf ph\u00eda tr\u00ean c\u00f9ng. Cu\u1ed1i c\u00f9ng, h\u1ea1 th\u1ea5p B\u0103ng th\u00f4ng \u0110\u1ed9 ph\u00e2n gi\u1ea3i (RBW)<\/a>3<\/a><\/sup> \u0111\u1ec3 t\u00e1ch t\u00edn hi\u1ec7u ri\u00eang bi\u1ec7t kh\u1ecfi nhi\u1ec5u.<\/strong><\/p>\n

    \"C\u1eadn<\/p>\n

    Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c thi\u1ebft l\u1eadp n\u00e0y \u0111\u00fang ban \u0111\u1ea7u gi\u1ed1ng nh\u01b0 m\u1ed9t ngh\u1ec7 thu\u1eadt h\u01a1n l\u00e0 m\u1ed9t khoa h\u1ecdc, nh\u01b0ng b\u1ea1n s\u1ebd nhanh ch\u00f3ng l\u00e0m quen v\u1edbi n\u00f3. T\u00f4i ngh\u0129 n\u00f3 gi\u1ed1ng nh\u01b0 \u0111i\u1ec1u ch\u1ec9nh m\u1ed9t radio th\u1ee7 c\u00f4ng. B\u1ea1n ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh n\u00fam v\u1eb7n c\u1ea9n th\u1eadn \u0111\u1ec3 t\u00ecm ra \u0111\u00e0i v\u00e0 sau \u0111\u00f3 tinh ch\u1ec9nh \u0111\u1ec3 c\u00f3 \u00e2m thanh r\u00f5 r\u00e0ng. M\u00e1y ph\u00e2n t\u00edch ph\u1ed5 r\u1ea5t gi\u1ed1ng nh\u01b0 v\u1eady, nh\u01b0ng ph\u1ea3n h\u1ed3i l\u00e0 h\u00ecnh \u1ea3nh. M\u1ee5c ti\u00eau l\u00e0 l\u00e0m cho t\u00edn hi\u1ec7u m\u1ee5c ti\u00eau n\u1ed5i b\u1eadt r\u00f5 r\u00e0ng so v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c th\u1ee9 kh\u00e1c. H\u00e3y ph\u00e2n t\u00edch ba thi\u1ebft l\u1eadp quan tr\u1ecdng nh\u1ea5t m\u00e0 b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng.<\/p>\n

    L\u00e0m ch\u1ee7 \"Ba l\u1edbn\"<\/h3>\n

    Kh\u1ea3 n\u0103ng t\u00ecm t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1ch b\u1ea1n \u0111i\u1ec1u ch\u1ec9nh ba tham s\u1ed1 ch\u00ednh tr\u00ean m\u00e1y ph\u00e2n t\u00edch c\u1ee7a m\u00ecnh.<\/p>\n

      \n
    1. \n

      T\u1ea7n s\u1ed1 trung t\u00e2m v\u00e0 ph\u1ea1m vi<\/h3>\n

      H\u00e3y ngh\u0129 n\u00f3 nh\u01b0 ch\u1ee9c n\u0103ng ph\u00f3ng to v\u00e0 di chuy\u1ec3n c\u1ee7a m\u1ed9t chi\u1ebfc m\u00e1y \u1ea3nh. The T\u1ea7n s\u1ed1 trung t\u00e2m<\/strong> l\u00e0 n\u01a1i b\u1ea1n h\u01b0\u1edbng nh\u00ecn, v\u00e0 Ph\u1ea1m vi<\/strong> l\u00e0 \u0111\u1ed9 r\u1ed9ng c\u1ee7a t\u1ea7m nh\u00ecn c\u1ee7a b\u1ea1n. \u0110\u1ec3 t\u00ecm t\u00edn hi\u1ec7u 2.4GHz, \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u t\u1ed1t l\u00e0 t\u1ea7n s\u1ed1 trung t\u00e2m 2.45 GHz v\u00e0 ph\u1ea1m vi 100 MHz. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y to\u00e0n b\u1ed9 b\u0103ng t\u1ea7n kh\u00f4ng c\u00f3 gi\u1ea5y ph\u00e9p t\u1eeb 2.4 GHz \u0111\u1ebfn 2.5 GHz. Khi b\u1ea1n th\u1ea5y t\u00edn hi\u1ec7u quan t\u00e2m, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m ph\u1ea1m vi v\u00e0 \u0111i\u1ec1u ch\u1ec9nh t\u1ea7n s\u1ed1 trung t\u00e2m \u0111\u1ec3 \"ph\u00f3ng to\" n\u00f3 \u0111\u1ec3 xem k\u1ef9 h\u01a1n.<\/p>\n<\/li>\n

    2. \n

      M\u1ee9c tham chi\u1ebfu<\/h3>\n

      Thi\u1ebft l\u1eadp n\u00e0y x\u00e1c \u0111\u1ecbnh m\u1ee9c c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng tr\u00ean tr\u1ee5c d\u1ecdc c\u1ee7a m\u00e0n h\u00ecnh. N\u1ebfu t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n qu\u00e1 cao v\u00e0 v\u01b0\u1ee3t ra kh\u1ecfi m\u00e0n h\u00ecnh, b\u1ea1n c\u1ea7n t\u0103ng m\u1ee9c tham chi\u1ebfu. N\u1ebfu qu\u00e1 th\u1ea5p v\u00e0 b\u1ecb ch\u00ecm trong nhi\u1ec5u \u1edf ph\u00eda d\u01b0\u1edbi, b\u1ea1n gi\u1ea3m m\u1ee9c tham chi\u1ebfu. Vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh thi\u1ebft l\u1eadp n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c khung h\u00ecnh \u0111\u1eb9p tr\u00ean m\u00e0n h\u00ecnh. N\u00f3 th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng c\u00f9ng v\u1edbi b\u1ed9 attenuator n\u1ed9i b\u1ed9 \u0111\u1ec3 ng\u0103n c\u00e1c t\u00edn hi\u1ec7u m\u1ea1nh l\u00e0m qu\u00e1 t\u1ea3i \u0111\u1ea7u v\u00e0o nh\u1ea1y c\u1ea3m c\u1ee7a m\u00e1y ph\u00e2n t\u00edch.<\/p>\n<\/li>\n

    3. \n

      B\u0103ng th\u00f4ng \u0110\u1ed9 ph\u00e2n gi\u1ea3i (RBW)<\/h3>\n

      \u0110\u00e2y l\u00e0 thi\u1ebft l\u1eadp quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 r\u00f5 r\u00e0ng. RBW gi\u1ed1ng nh\u01b0 k\u00edch th\u01b0\u1edbc c\u1ee7a \u1ed1ng k\u00ednh b\u1ea1n \u0111ang nh\u00ecn qua. RBW nh\u1ecf h\u01a1n cho ph\u00e9p b\u1ea1n c\u00f3 m\u1ed9t c\u00e1i nh\u00ecn s\u1eafc n\u00e9t, chi ti\u1ebft h\u01a1n, gi\u00fap ph\u00e2n bi\u1ec7t c\u00e1c t\u00edn hi\u1ec7u r\u1ea5t g\u1ea7n nhau v\u1ec1 t\u1ea7n s\u1ed1. Tuy nhi\u00ean, RBW nh\u1ecf c\u0169ng c\u00f3 ngh\u0129a l\u00e0 th\u1eddi gian qu\u00e9t ch\u1eadm h\u01a1n. RBW l\u1edbn h\u01a1n nhanh h\u01a1n nh\u01b0ng c\u00f3 th\u1ec3 l\u00e0m m\u1edd c\u00e1c t\u00edn hi\u1ec7u y\u1ebfu ho\u1eb7c c\u00e1c t\u00edn hi\u1ec7u c\u1ea1nh nhau. B\u1ea1n ph\u1ea3i t\u00ecm ra s\u1ef1 c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n<\/ol>\n\n\n\n\n\n\n\n
      Thi\u1ebft l\u1eadp<\/th>\nNh\u1eefng g\u00ec n\u00f3 ki\u1ec3m so\u00e1t<\/th>\nGi\u1ea3m gi\u00e1 tr\u1ecb c\u00f3 ngh\u0129a l\u00e0...<\/th>\nT\u0103ng gi\u00e1 tr\u1ecb c\u00f3 ngh\u0129a l\u00e0...<\/th>\n<\/tr>\n<\/thead>\n
      Ph\u1ea1m vi<\/strong><\/td>\nChi\u1ec1u r\u1ed9ng c\u1ee7a c\u1eeda s\u1ed5 t\u1ea7n s\u1ed1 b\u1ea1n nh\u00ecn th\u1ea5y.<\/td>\nB\u1ea1n ph\u00f3ng to tr\u00ean m\u1ed9t ph\u1ea1m vi t\u1ea7n s\u1ed1 nh\u1ecf h\u01a1n.<\/td>\nB\u1ea1n ph\u00f3ng to \u0111\u1ec3 xem ph\u1ea1m vi r\u1ed9ng h\u01a1n.<\/td>\n<\/tr>\n
      RBW<\/strong><\/td>\n\u0110\u1ed9 \\.<\/td>\nPh\u00e2n t\u00e1ch t\u00edn hi\u1ec7u t\u1ed1t h\u01a1n, nh\u01b0ng qu\u00e9t ch\u1eadm h\u01a1n.<\/td>\nQu\u00e9t nhanh h\u01a1n, nh\u01b0ng ph\u00e2n t\u00e1ch t\u00edn hi\u1ec7u k\u00e9m h\u01a1n.<\/td>\n<\/tr>\n
      M\u1ee9c tham chi\u1ebfu<\/strong><\/td>\nM\u1ee9c c\u00f4ng su\u1ea5t \u1edf \u0111\u1ea7u m\u00e0n h\u00ecnh.<\/td>\nTo\u00e0n b\u1ed9 \u0111\u01b0\u1eddng s\u00f3ng di chuy\u1ec3n xu\u1ed1ng m\u00e0n h\u00ecnh.<\/td>\nTo\u00e0n b\u1ed9 \u0111\u01b0\u1eddng s\u00f3ng di chuy\u1ec3n l\u00ean tr\u00ean m\u00e0n h\u00ecnh.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Nh\u1eefng th\u00e1ch th\u1ee9c ph\u1ed5 bi\u1ebfn n\u00e0o b\u1ea1n s\u1ebd g\u1eb7p ph\u1ea3i v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 v\u01b0\u1ee3t qua ch\u00fang?<\/h2>\n

      B\u1ea1n \u0111\u00e3 thi\u1ebft l\u1eadp m\u1ecdi th\u1ee9, nh\u01b0ng t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n y\u1ebfu, kh\u00f4ng \u1ed5n \u0111\u1ecbnh ho\u1eb7c b\u1ecb che khu\u1ea5t b\u1edfi t\u00edn hi\u1ec7u kh\u00e1c. \u0110\u00e2y l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00e0 g\u00e2y kh\u00f3 ch\u1ecbu. T\u00f4i s\u1ebd gi\u1ea3i th\u00edch c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c.<\/p>\n

      \u0110\u1ed1i v\u1edbi t\u00edn hi\u1ec7u y\u1ebfu, s\u1eed d\u1ee5ng B\u1ed9 khu\u1ebfch \u0111\u1ea1i ti\u1ebfng \u1ed3n th\u1ea5p (LNA)<\/a>12<\/a><\/sup>. \u0110\u1ed1i v\u1edbi t\u00edn hi\u1ec7u kh\u00f4ng \u1ed5n \u0111\u1ecbnh nh\u1ea3y lung tung, s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng \\.<\/strong><\/p>\n

      \"M\u1ed9t<\/p>\n

      M\u1ed7i k\u1ef9 s\u01b0 RF \u0111\u1ec1u \u0111\u00e3 tr\u1ea3i qua \u0111i\u1ec1u \u0111\u00f3. B\u1ea1n bi\u1ebft r\u1eb1ng c\u00f3 m\u1ed9t t\u00edn hi\u1ec7u t\u1ed3n t\u1ea1i, nh\u01b0ng b\u1ea1n kh\u00f4ng th\u1ec3 b\u1eaft ch\u00ednh x\u00e1c t\u00edn hi\u1ec7u \u0111\u00f3. B\u0103ng t\u1ea7n 2.4GHz \u0111\u1eb7c bi\u1ec7t kh\u00f3 kh\u0103n v\u00ec \u0111\u00f3 l\u00e0 kh\u00f4ng gian chia s\u1ebb. N\u00f3 gi\u1ed1ng nh\u01b0 c\u1ed1 g\u1eafng nghe ti\u1ebfng th\u00ec th\u1ea7m c\u1ee7a m\u1ed9t ng\u01b0\u1eddi trong m\u1ed9t ph\u00f2ng \u1ed3n \u00e0o, \u0111\u00f4ng \u0111\u00fac. Tin vui l\u00e0 m\u00e1y ph\u00e2n t\u00edch ph\u1ed5 c\u1ee7a b\u1ea1n c\u00f3 c\u00e1c ch\u1ee9c n\u0103ng \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 x\u1eed l\u00fd ch\u00ednh x\u00e1c nh\u1eefng t\u00ecnh hu\u1ed1ng n\u00e0y. T\u00f4i \u0111\u00e3 d\u00e0nh h\u00e0ng gi\u1edd \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y, v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p th\u01b0\u1eddng kh\u00e1 \u0111\u01a1n gi\u1ea3n khi b\u1ea1n bi\u1ebft c\u1ea7n t\u00ecm g\u00ec.<\/p>\n

      C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c c\u1ee7a ch\u00fang<\/h3>\n

      H\u00e3y c\u00f9ng xem x\u00e9t ba v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 c\u00e1ch s\u1eeda ch\u00fang.<\/p>\n

        \n
      1. \n

        V\u1ea5n \u0111\u1ec1: T\u00edn hi\u1ec7u qu\u00e1 y\u1ebfu<\/h3>\n

        \u0110\u00f4i khi t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n n\u1eb1m d\u01b0\u1edbi ng\u01b0\u1ee1ng nhi\u1ec5u c\u1ee7a b\u1ed9 ph\u00e2n t\u00edch, khi\u1ebfn n\u00f3 kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y. Gi\u1ea3i ph\u00e1p l\u00e0 t\u0103ng c\u01b0\u1eddng t\u00edn hi\u1ec7u \u0111\u00f3. B\u1ea1n c\u00f3 th\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1ch \u0111\u1eb7t m\u1ed9t B\u1ed9 khu\u1ebfch \u0111\u1ea1i ti\u1ebfng \u1ed3n th\u1ea5p (LNA)<\/strong> b\u1ed9 khu\u1ebfch \u0111\u1ea1i ti\u1ebfng \u1ed3n th\u1ea5p (LNA) d\u1ecdc theo d\u00e2y gi\u1eefa anten v\u00e0 b\u1ed9 ph\u00e2n t\u00edch ph\u1ed5 c\u1ee7a b\u1ea1n. M\u1ed9t LNA t\u0103ng c\u01b0\u1eddng c\u00f4ng su\u1ea5t c\u1ee7a m\u1ecdi th\u1ee9 n\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c, nh\u01b0ng \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh l\u00e0 n\u00f3 t\u1ea1o ra r\u1ea5t \u00edt nhi\u1ec5u ri\u00eang c\u1ee7a n\u00f3. \u0110i\u1ec1u n\u00e0y l\u00e0m t\u0103ng<\/a>13<\/a><\/sup>, l\u00e0m cho t\u00edn hi\u1ec7u y\u1ebfu c\u1ee7a b\u1ea1n \"n\u1ed5i b\u1eadt\" kh\u1ecfi n\u1ec1n nhi\u1ec5u. C\u00f4ng ty ch\u00fang t\u00f4i s\u1ea3n xu\u1ea5t c\u00e1c b\u1ed9 khu\u1ebfch \u0111\u1ea1i LNA cho m\u1ee5c \u0111\u00edch n\u00e0y, v\u00e0 ch\u00fang r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c chuy\u00ean nghi\u1ec7p s\u0103n t\u00ecm t\u00edn hi\u1ec7u<\/a>14<\/a><\/sup>.<\/p>\n<\/li>\n

      2. \n

        V\u1ea5n \u0111\u1ec1: T\u00edn hi\u1ec7u Nh\u1ea3y T\u1ea7n s\u1ed1<\/h3>\n

        N\u1ebfu b\u1ea1n th\u1ea5y m\u1ed9t t\u00edn hi\u1ec7u xu\u1ea5t hi\u1ec7n trong t\u00edch t\u1eafc r\u1ed3i bi\u1ebfn m\u1ea5t, ho\u1eb7c c\u00f3 v\u1ebb nh\u01b0 \u0111ang nh\u1ea3y lo\u1ea1n x\u1ea1, c\u00f3 kh\u1ea3 n\u0103ng b\u1ea1n \u0111ang nh\u00ecn v\u00e0o m\u1ed9t t\u00edn hi\u1ec7u ph\u1ed5 t\u1ea7n s\u1ed1 nh\u1ea3y (FHSS)<\/a>15<\/a><\/sup> Bluetooth l\u00e0 m\u1ed9t v\u00ed d\u1ee5 ho\u00e0n h\u1ea3o c\u1ee7a \u0111i\u1ec1u n\u00e0y. \u0110\u1ec3 nh\u00ecn th\u1ea5y n\u00f3, b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng ch\u1ee9c n\u0103ng \"Max Hold\"<\/strong> tr\u00ean b\u1ed9 ph\u00e2n t\u00edch c\u1ee7a b\u1ea1n. Ch\u1ee9c n\u0103ng n\u00e0y gi\u1eef m\u1ee9c c\u00f4ng su\u1ea5t cao nh\u1ea5t \u0111o \u0111\u01b0\u1ee3c t\u1ea1i m\u1ed7i \u0111i\u1ec3m t\u1ea7n s\u1ed1 tr\u00ean m\u00e0n h\u00ecnh. Trong v\u00e0i gi\u00e2y, n\u00f3 s\u1ebd \"v\u1ebd\" ra m\u1ed9t b\u1ee9c tranh v\u1ec1 to\u00e0n b\u1ed9 ph\u1ea1m vi t\u1ea7n s\u1ed1 m\u00e0 t\u00edn hi\u1ec7u \u0111ang s\u1eed d\u1ee5ng.<\/p>\n<\/li>\n

      3. \n

        V\u1ea5n \u0111\u1ec1: T\u00edn hi\u1ec7u M\u1ea1nh \u1ea8n T\u00edn hi\u1ec7u Y\u1ebfu c\u1ee7a b\u1ea1n<\/h3>\n

        \u0110i\u1ec1u g\u00ec x\u1ea3y ra n\u1ebfu t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n n\u1eb1m ngay c\u1ea1nh m\u1ed9t k\u00eanh Wi-Fi r\u1ea5t m\u1ea1nh? T\u00edn hi\u1ec7u m\u1ea1nh c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i b\u1ed9 ph\u00e2n t\u00edch v\u00e0 che khu\u1ea5t m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n. B\u01b0\u1edbc \u0111\u1ea7u ti\u00ean l\u00e0 gi\u1ea3m b\u0103ng th\u00f4ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i (RBW)<\/strong>. M\u1ed9t RBW nh\u1ecf h\u01a1n gi\u00fap b\u1ed9 ph\u00e2n t\u00edch t\u1eadp trung h\u01a1n, cho ph\u00e9p ph\u00e2n bi\u1ec7t gi\u1eefa hai t\u00edn hi\u1ec7u r\u1ea5t g\u1ea7n nhau. B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Trung b\u00ecnh \u0110\u01b0\u1eddng truy\u1ec1n<\/strong>, gi\u00fap trung b\u00ecnh nhi\u1ec1u qu\u00e9t l\u1ea1i v\u1edbi nhau. \u0110i\u1ec1u n\u00e0y l\u00e0m m\u01b0\u1ee3t nhi\u1ec5u ng\u1eabu nhi\u00ean trong khi gi\u1eef cho c\u00e1c t\u00edn hi\u1ec7u \u1ed5n \u0111\u1ecbnh nh\u01b0 c\u1ee7a b\u1ea1n r\u00f5 r\u00e0ng v\u00e0 \u1ed5n \u0111\u1ecbnh.<\/p>\n<\/li>\n<\/ol>\n

        K\u1ebft lu\u1eadn<\/h2>\n

        T\u00ecm m\u1ed9t t\u00edn hi\u1ec7u 2.4GHz<\/a>1<\/a><\/sup> t\u00edn hi\u1ec7u l\u00e0 v\u1ec1 vi\u1ec7c c\u00f3 c\u00e1c c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p, th\u00e0nh th\u1ea1o c\u00e1c c\u00e0i \u0111\u1eb7t ch\u00ednh nh\u01b0 RBW, v\u00e0 bi\u1ebft c\u00e1ch kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn. T\u00f4i hy v\u1ecdng h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf n\u00e0y gi\u00fap b\u1ea1n th\u00e0nh c\u00f4ng.<\/p>\n

        1. Kh\u00e1m ph\u00e1 c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau c\u1ee7a b\u0103ng t\u1ea7n 2.4GHz \u0111\u1ec3 n\u00e2ng cao ki\u1ebfn th\u1ee9c c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

        2. Hi\u1ec3u r\u00f5 v\u1ec1 b\u1ed9 ph\u00e2n t\u00edch ph\u1ed5 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u RF hi\u1ec7u qu\u1ea3.\r \u21a9<\/a><\/p><\/li>

        3. T\u00ecm hi\u1ec3u c\u00e1ch RBW \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 r\u00f5 c\u1ee7a t\u00edn hi\u1ec7u v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o.\r \u21a9<\/a><\/p><\/li>

        4. Hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n RF l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u0103n t\u00ecm t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3.\r \u21a9<\/a><\/p><\/li>

        5. Hi\u1ec3u bi\u1ebft v\u1ec1 \u0111o c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 ph\u00e2n t\u00edch hi\u1ec7u qu\u1ea3.\r \u21a9<\/a><\/p><\/li>

        6. Hi\u1ec3u bi\u1ebft v\u1ec1 \u0111\u1ed9 l\u1ee3i l\u00e0 \u0111i\u1ec1u quan tr\u1ecdng \u0111\u1ec3 ch\u1ecdn \u0111\u00fang lo\u1ea1i anten ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

        7. Kh\u00e1m ph\u00e1 c\u00e1c SDR nh\u01b0 c\u00e1c l\u1ef1a ch\u1ecdn ti\u1ebft ki\u1ec7m ng\u00e2n s\u00e1ch cho vi\u1ec7c h\u1ecdc ph\u00e2n t\u00edch RF.\r \u21a9<\/a><\/p><\/li>

        8. Kh\u00e1m ph\u00e1 l\u1ee3i \u00edch c\u1ee7a c\u00e1c b\u1ed9 ph\u00e2n t\u00edch chuy\u00ean nghi\u1ec7p cho c\u00f4ng vi\u1ec7c nghi\u00eam t\u00fac.\r \u21a9<\/a><\/p><\/li>

        9. Hi\u1ec3u v\u1ec1 anten h\u01b0\u1edbng c\u00f3 th\u1ec3 n\u00e2ng cao kh\u1ea3 n\u0103ng s\u0103n t\u00ecm t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

        10. Ch\u1ecdn \u0111\u00fang lo\u1ea1i c\u00e1p \u0111\u1ed3ng tr\u1ee5c l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 gi\u1ea3m thi\u1ec3u m\u1ea5t m\u00e1t t\u00edn hi\u1ec7u.\r \u21a9<\/a><\/p><\/li>

        11. Kh\u00e1m ph\u00e1 t\u1ea7m quan tr\u1ecdng c\u1ee7a b\u0103ng t\u1ea7n ISM trong truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y.\r \u21a9<\/a><\/p><\/li>

        12. Kh\u00e1m ph\u00e1 c\u00e1ch LNA c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n t\u00edn hi\u1ec7u y\u1ebfu.\r \u21a9<\/a><\/p><\/li>

        13. Hi\u1ec3u r\u00f5 v\u1ec1 SNR l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 ph\u00e2n t\u00edch t\u00edn hi\u1ec7u hi\u1ec7u qu\u1ea3.\r \u21a9<\/a><\/p><\/li>

        14. Kh\u00e1m ph\u00e1 c\u00e1c k\u1ef9 thu\u1eadt kh\u00e1c nhau \u0111\u1ec3 n\u00e2ng cao k\u1ef9 n\u0103ng s\u0103n t\u00ecm t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

        15. T\u00ecm hi\u1ec3u v\u1ec1 FHSS \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 h\u00e0nh vi c\u1ee7a m\u1ed9t s\u1ed1 t\u00edn hi\u1ec7u RF.\r \u21a9<\/a><\/p><\/li><\/ol><\/div>","protected":false},"excerpt":{"rendered":"

          Struggling to find a signal in the noisy 2.4GHz band? With so much interference from Wi-Fi and Bluetooth, isolating your target can feel impossible. I will guide you through it. To find a 2.4GHz1 signal’s exact frequency, use a spectrum analyzer2. Set the center frequency to 2.45GHz with a 100MHz span. Lower the Resolution Bandwidth […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"none","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"both","_seopress_redirections_param":"","_seopress_redirections_type":301,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-12007","post","type-post","status-publish","format-standard","hentry","category-blog"],"acf":[],"_links":{"self":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12007","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/comments?post=12007"}],"version-history":[{"count":7,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12007\/revisions"}],"predecessor-version":[{"id":12793,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12007\/revisions\/12793"}],"wp:attachment":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/media?parent=12007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/categories?post=12007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/tags?post=12007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}