{"id":12083,"date":"2026-04-15T09:49:28","date_gmt":"2026-04-15T01:49:28","guid":{"rendered":"https:\/\/safarimw.com\/?p=12083"},"modified":"2026-04-20T17:09:53","modified_gmt":"2026-04-20T09:09:53","slug":"understanding-the-two-types-of-lnb-a-comprehensive-guide","status":"publish","type":"post","link":"https:\/\/safarimw.com\/vi\/understanding-the-two-types-of-lnb-a-comprehensive-guide\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 Hai Lo\u1ea1i LNB: H\u01b0\u1edbng D\u1eabn To\u00e0n Di\u1ec7n?"},"content":{"rendered":"

B\u1ea1n c\u00f3 \u0111ang g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c ch\u1ecdn \u0111\u00fang B\u1ed9 chuy\u1ec3n \u0111\u1ed5i xu\u1ed1ng th\u1ea5p ti\u1ebfng \u1ed3n th\u1ea5p<\/a>1<\/a><\/sup>? Ch\u1ecdn sai c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00edn hi\u1ec7u k\u00e9m, l\u00e3ng ph\u00ed ti\u1ec1n b\u1ea1c v\u00e0 h\u1ec7 th\u1ed1ng qu\u00e1 ph\u1ee9c t\u1ea1p. H\u00e3y l\u00e0m r\u00f5 s\u1ef1 l\u1ef1a ch\u1ecdn c\u1ee7a b\u1ea1n.<\/p>\n

Hai lo\u1ea1i ch\u00ednh c\u1ee7a LNB l\u00e0 LNB ph\u1ed5 qu\u00e1t<\/a>2<\/a><\/sup>, chuy\u1ec3n \u0111\u1ed5i gi\u1eefa nhi\u1ec1u b\u0103ng t\u1ea7n v\u00e0 c\u1ef1c c\u1ee7a s\u00f3ng, v\u00e0 LNB \u0111\u01a1n b\u0103ng<\/a>3<\/a><\/sup>, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho m\u1ed9t ph\u1ea1m vi t\u1ea7n s\u1ed1 c\u1ee5 th\u1ec3. L\u1ef1a ch\u1ecdn c\u1ee7a b\u1ea1n ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o nhu c\u1ea7u ti\u1ebfp nh\u1eadn v\u1ec7 tinh c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n, kh\u00f4ng ph\u1ea3i d\u1ef1a tr\u00ean t\u00ednh n\u0103ng nhi\u1ec1u h\u01a1n c\u1ee7a n\u00f3.<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
T\u00ednh n\u0103ng<\/th>\nLNB \u0111a n\u0103ng<\/th>\nLNB \u0111\u01a1n b\u0103ng<\/th>\n<\/tr>\n<\/thead>\n
Primary Use<\/strong><\/td>\nResidential DTH (Direct-To-Home)<\/td>\nCommercial \/ VSAT \/ Data Feeds<\/td>\n<\/tr>\n
Ph\u1ea1m vi T\u1ea7n s\u1ed1<\/strong><\/td>\nFull Ku-Band (10.7 - 12.75 GHz)<\/td>\nFixed Range (e.g., 11.7 - 12.2 GHz)<\/td>\n<\/tr>\n
Switching Method<\/strong><\/td>\n13\/18V (Polarity) + 22kHz (Band)<\/td>\nNo Switching (Fixed Output)<\/td>\n<\/tr>\n
Signal Segments<\/strong><\/td>\n4 States (LH, LV, HH, HV)<\/td>\nSingle Fixed Segment<\/td>\n<\/tr>\n
Local Oscillator<\/strong><\/td>\nDual LO (9.75 \/ 10.6 GHz)<\/td>\nSingle Fixed LO (e.g., 10.75 GHz)<\/td>\n<\/tr>\n
Compatibility<\/strong><\/td>\nStandard Consumer Receivers<\/td>\nProfessional Multiswitches \/ Modems<\/td>\n<\/tr>\n
Stability<\/strong><\/td>\nStandard<\/td>\nHigh Precision \/ Low Drift<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

B\u1ea1n b\u00e2y gi\u1edd \u0111\u00e3 bi\u1ebft c\u00e1c lo\u1ea1i c\u01a1 b\u1ea3n, nh\u01b0ng \u0111\u00f3 ch\u1ec9 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u. Th\u00e1ch th\u1ee9c th\u1ef1c s\u1ef1 l\u00e0 bi\u1ebft khi n\u00e0o n\u00ean ch\u1ecdn m\u1ed9t lo\u1ea1i h\u01a1n lo\u1ea1i kia, m\u1ed9t quy\u1ebft \u0111\u1ecbnh c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i ng\u00e2n s\u00e1ch v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n. H\u00e3y \u0111i s\u00e2u h\u01a1n v\u00e0o nh\u1eefng g\u00ec th\u1ef1c s\u1ef1 quan tr\u1ecdng cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n.<\/p>\n

Li\u1ec7u LNB ph\u1ed5 qu\u00e1t c\u00f3 lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n?<\/h2>\n

B\u1ea1n c\u00f3 ngh\u0129 r\u1eb1ng nhi\u1ec1u t\u00ednh n\u0103ng h\u01a1n lu\u00f4n \u0111\u1ed3ng ngh\u0129a v\u1edbi hi\u1ec7u su\u1ea5t t\u1ed1t h\u01a1n? Gi\u1ea3 \u0111\u1ecbnh ph\u1ed5 bi\u1ebfn n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng sai l\u1ea7m \u0111\u1eaft \u0111\u1ecf v\u00e0 h\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nh\u1eefng \u0111i\u1ec3m quan tr\u1ecdng nh\u1ea5t. H\u00e3y n\u00f3i v\u1ec1 l\u00fd do t\u1ea1i sao \"nhi\u1ec1u\" kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng t\u1ed1t h\u01a1n.<\/p>\n

Kh\u00f4ng, m\u1ed9t LNB ph\u1ed5 qu\u00e1t kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng l\u00e0 l\u1ef1a ch\u1ecdn t\u1ed1t h\u01a1n. T\u00ednh linh ho\u1ea1t c\u1ee7a n\u00f3 r\u1ea5t ph\u00f9 h\u1ee3p cho TV gia \u0111\u00ecnh, nh\u01b0ng s\u1ef1 ph\u1ee9c t\u1ea1p n\u00e0y c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m ch\u1ec9 s\u1ed1 nhi\u1ec5u<\/a>4<\/a><\/sup> v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh t\u00edn hi\u1ec7u<\/a>5<\/a><\/sup>. \u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean nghi\u1ec7p, m\u1ed9t LNB \u0111\u01a1n b\u0103ng d\u00e0nh ri\u00eang g\u1ea7n nh\u01b0 lu\u00f4n cung c\u1ea5p hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i, \u0111\u00e1ng tin c\u1eady h\u01a1n.<\/strong><\/p>\n

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

H\u00e3y \u0111\u1ec3 t\u00f4i k\u1ec3 cho b\u1ea1n m\u1ed9t c\u00e2u chuy\u1ec7n. Nhi\u1ec1u n\u0103m tr\u01b0\u1edbc, t\u00f4i l\u00e0m vi\u1ec7c trong l\u0129nh v\u1ef1c h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. S\u1ebfp c\u1ee7a t\u00f4i l\u00e0 ng\u01b0\u1eddi m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 g\u1ecdi l\u00e0 \"ng\u01b0\u1eddi theo \u0111u\u1ed5i hi\u1ec7u su\u1ea5t.\" \u00d4ng mu\u1ed1n m\u1ecdi ch\u1ec9 s\u1ed1 trong d\u1ef1 \u00e1n c\u1ee7a m\u00ecnh \u0111\u1ec1u t\u1ed1t h\u01a1n c\u00e1c d\u1ef1 \u00e1n c\u1ee7a \u0111\u1ed1i th\u1ee7. V\u00ec v\u1eady, khi ch\u00fang t\u00f4i th\u1ea3o lu\u1eadn v\u1ec1 LNB cho m\u1ed9t h\u1ec7 th\u1ed1ng m\u1edbi, \u00f4ng tuy\u00ean b\u1ed1, 'T\u00f4i mu\u1ed1n nh\u1eadn t\u1ea5t c\u1ea3 c\u00e1c b\u0103ng t\u1ea7n!\" \u00d4ng b\u1ea3o c\u00e1c k\u1ef9 s\u01b0 \u0111\u1eebng lo v\u1ec1 m\u1ee5c \u0111\u00edch c\u1ee7a c\u00e1c t\u00edn hi\u1ec7u \u0111\u00f3. \u00d4ng ch\u1ec9 mu\u1ed1n c\u00f3 t\u00f9y ch\u1ecdn. K\u1ebft qu\u1ea3 l\u00e0, ch\u00fang t\u00f4i thi\u1ebft k\u1ebf m\u1ed9t \"b\u1ed9 thu \u0111a b\u0103ng c\u1ef1c r\u1ed9ng\" c\u1ef1c k\u1ef3 ph\u1ee9c t\u1ea1p v\u00e0 \u0111\u1eaft ti\u1ec1n, bao ph\u1ee7 g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 ph\u1ed5 2-18 GHz. Ch\u00fang t\u00f4i s\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt s\u00e1ng t\u1ea1o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ef7 l\u1ec7 t\u00edn hi\u1ec7u tr\u00ean nhi\u1ec5u t\u1ed1t trong m\u1ecdi b\u0103ng t\u1ea7n. Nh\u01b0ng ch\u00fang t\u00f4i v\u1eabn thua trong cu\u1ed9c \u0111\u1ea5u th\u1ea7u. H\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang t\u00f4i t\u1ed1n g\u1ea5p \u0111\u00f4i chi ph\u00ed c\u1ee7a \u0111\u1ed1i th\u1ee7 v\u00e0 hi\u1ec7u su\u1ea5t h\u01a1i k\u00e9m h\u01a1n m\u1ed9t ch\u00fat tr\u00ean b\u0103ng t\u1ea7n c\u1ee5 th\u1ec3 m\u00e0 kh\u00e1ch h\u00e0ng th\u1ef1c s\u1ef1 c\u1ea7n. B\u00e0i h\u1ecdc r\u00f5 r\u00e0ng: t\u1eadp trung v\u00e0o gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 th\u1ef1c s\u1ef1. LNB t\u1ed1t nh\u1ea5t l\u00e0 c\u00e1i ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c b\u1ea1n c\u1ea7n, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1i c\u00f3 danh s\u00e1ch t\u00ednh n\u0103ng d\u00e0i nh\u1ea5t.<\/p>\n

L\u00e0m th\u1ebf n\u00e0o LNB \u0111\u01a1n b\u0103ng cung c\u1ea5p hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i?<\/h2>\n

B\u1ea1n \u0111ang g\u1eb7p ph\u1ea3i t\u00edn hi\u1ec7u y\u1ebfu ho\u1eb7c nhi\u1ec5u l\u1ea1 trong h\u1ec7 th\u1ed1ng c\u1ee7a m\u00ecnh? Th\u00e0nh ph\u1ea7n t\u1ea5t c\u1ea3 trong m\u1ed9t c\u1ee7a b\u1ea1n c\u00f3 th\u1ec3 l\u00e0 nguy\u00ean nh\u00e2n v\u00ec n\u00f3 c\u1ed1 g\u1eafng l\u00e0m qu\u00e1 nhi\u1ec1u vi\u1ec7c c\u00f9ng l\u00fac. H\u00e3y xem c\u00e1ch chuy\u00ean m\u00f4n h\u00f3a c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n.<\/p>\n

LNB \u0111\u01a1n b\u0103ng<\/a>3<\/a><\/sup> excel v\u00ec ch\u00fang \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho m\u1ed9t ph\u1ea1m vi t\u1ea7n s\u1ed1 h\u1eb9p. Thi\u1ebft k\u1ebf t\u1eadp trung n\u00e0y cho ph\u00e9p m\u1ed9t ch\u1ec9 s\u1ed1 nhi\u1ec5u<\/a>4<\/a><\/sup>, l\u1ecdc t\u00edn hi\u1ec7u t\u1ed1t h\u01a1n, v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh cao h\u01a1n. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn t\u00edn hi\u1ec7u s\u1ea1ch h\u01a1n, \u0111\u00e1ng tin c\u1eady h\u01a1n cho \u1ee9ng d\u1ee5ng quan tr\u1ecdng<\/a>6<\/a><\/sup>.<\/strong><\/p>\n

\"Bi\u1ec3u<\/p>\n

Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a LNB \u0111\u01a1n b\u0103ng d\u1ef1a tr\u00ean k\u1ef9 thu\u1eadt t\u1eadp trung. Khi b\u1ea1n thi\u1ebft k\u1ebf cho m\u1ed9t d\u1ea3i t\u1ea7n h\u1eb9p, m\u1ecdi th\u00e0nh ph\u1ea7n \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ho\u00e0n h\u1ea3o.<\/p>\n

Ch\u1ec9 s\u1ed1 Nhi\u1ec5u t\u1ed1i \u01b0u<\/h3>\n

The amplifier inside the LNB can be optimized for a small frequency window. This allows it to achieve a much lower ch\u1ec9 s\u1ed1 nhi\u1ec5u<\/a>4<\/a><\/sup> NF (Ch\u1ec9 s\u1ed1 Nhi\u1ec5u) th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi khu\u1ebfch \u0111\u1ea1i b\u0103ng r\u1ed9ng ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng tr\u00ean nhi\u1ec1u qu\u00e3ng t\u00e1m. T\u1ea1i Safari Microwave, ch\u00fang t\u00f4i th\u1ea5y \u0111i\u1ec1u n\u00e0y trong c\u00e1c thi\u1ebft k\u1ebf c\u1ee7a ch\u00ednh m\u00ecnh, n\u01a1i c\u00e1c LNA chuy\u00ean d\u1ee5ng c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 \u0111\u1ea1t NF th\u1ea5p t\u1edbi 0.5 dB l\u00ean \u0111\u1ebfn 110GHz. M\u1ee9c hi\u1ec7u su\u1ea5t n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 trong m\u1ed9t thi\u1ebft b\u1ecb \u0111a n\u0103ng.<\/p>\n

L\u1ecdc v\u00e0 c\u00e1ch ly v\u01b0\u1ee3t tr\u1ed9i<\/h3>\n

LNB \u0111\u01a1n b\u0103ng c\u00f3 b\u1ed9 l\u1ecdc \u0111\u01a1n gi\u1ea3n h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n. Nh\u1eefng b\u1ed9 l\u1ecdc n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ea5t k\u1ef3 t\u00edn hi\u1ec7u n\u00e0o ngo\u00e0i d\u1ea3i mong mu\u1ed1n. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c t\u00edn hi\u1ec7u m\u1ea1nh, g\u1ea7n \u0111\u00f3 g\u00e2y nhi\u1ec5u t\u00edn hi\u1ec7u v\u1ec7 tinh y\u1ebfu c\u1ee7a b\u1ea1n. \u0110\u00e2y ch\u00ednh x\u00e1c l\u00e0 v\u1ea5n \u0111\u1ec1 trong c\u00e2u chuy\u1ec7n c\u1ee7a t\u00f4i, n\u01a1i c\u00e1c t\u00edn hi\u1ec7u S-band m\u1ea1nh m\u1ebd r\u00f2 r\u1ec9 v\u00e0o c\u00e1c d\u1ea3i t\u1ea7n cao h\u01a1n.<\/p>\n\n\n\n\n\n\n\n\n
T\u00ednh n\u0103ng<\/th>\nLNB \u0111\u01a1n b\u0103ng<\/th>\nLNB \u0111a n\u0103ng<\/th>\n<\/tr>\n<\/thead>\n
Ch\u1ec9 s\u1ed1 Nhi\u1ec5u<\/strong><\/td>\nR\u1ea5t th\u1ea5p (T\u1ed1i \u01b0u h\u00f3a)<\/td>\nT\u1ed1t (Th\u1ecfa hi\u1ec7p)<\/td>\n<\/tr>\n
\u1ed4n \u0111\u1ecbnh t\u00edn hi\u1ec7u<\/strong><\/td>\nXu\u1ea5t s\u1eafc<\/td>\nT\u1ed1t, nh\u01b0ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i<\/td>\n<\/tr>\n
Ch\u1ed1ng nhi\u1ec5u.<\/strong><\/td>\nCao<\/td>\nV\u1eeba ph\u1ea3i<\/td>\n<\/tr>\n
\u1ee8ng d\u1ee5ng<\/strong><\/td>\nChuy\u00ean nghi\u1ec7p, C\u1ea7n thi\u1ebft cho nhi\u1ec7m v\u1ee5<\/td>\nNg\u01b0\u1eddi ti\u00eau d\u00f9ng, Truy\u1ec1n h\u00ecnh v\u1ec7 tinh \u0111a v\u1ec7 tinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

T\u00f4i n\u00ean ki\u1ec3m tra nh\u1eefng th\u00f4ng s\u1ed1 ch\u00ednh n\u00e0o tr\u01b0\u1edbc khi mua LNB?<\/h2>\n

B\u1ea1n c\u00f3 b\u1ecb cho\u00e1ng ng\u1ee3p b\u1edfi c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u \u0111\u1ea7y thu\u1eadt ng\u1eef k\u1ef9 thu\u1eadt kh\u00f4ng? Ch\u1ecdn LNB d\u1ef1a tr\u00ean th\u00f4ng s\u1ed1 sai c\u00f3 th\u1ec3 khi\u1ebfn d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n th\u1ea5t b\u1ea1i ngay t\u1eeb \u0111\u1ea7u. H\u00e3y t\u1eadp trung v\u00e0o nh\u1eefng con s\u1ed1 quan tr\u1ecdng th\u1ef1c s\u1ef1.<\/p>\n

T\u1eadp trung v\u00e0o c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh n\u00e0y: \u0110\u1eb7c t\u00ednh ti\u1ebfng \u1ed3n (\u00edt h\u01a1n l\u00e0 t\u1ed1t h\u01a1n), T\u0103ng (ph\u1ea3i \u0111\u1ee7 nh\u01b0ng kh\u00f4ng qu\u00e1 m\u1ee9c), v\u00e0 Ti\u1ebfng \u1ed3n pha<\/a>7<\/a><\/sup> (crucial for data integrity). Also, always check the frequency range and stability to ensure they match your system's precise requirements.<\/strong><\/p>\n

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

Khi b\u1ea1n l\u00e0 ng\u01b0\u1eddi mua k\u1ef9 thu\u1eadt, b\u1ea1n bi\u1ebft r\u1eb1ng c\u00e1c chi ti\u1ebft trong b\u1ea3ng d\u1eef li\u1ec7u l\u00e0 \u0111i\u1ec1u ph\u00e2n bi\u1ec7t th\u00e0nh c\u00f4ng hay th\u1ea5t b\u1ea1i c\u1ee7a d\u1ef1 \u00e1n. H\u00e3y ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t.<\/p>\n

Ch\u1ec9 s\u1ed1 nhi\u1ec5u (NF)<\/h3>\n

\u0110\u00e2y c\u00f3 th\u1ec3 coi l\u00e0 th\u00f4ng s\u1ed1 quan tr\u1ecdng nh\u1ea5t. N\u00f3 \u0111o l\u01b0\u1ee3ng ti\u1ebfng \u1ed3n m\u00e0 LNB th\u00eam v\u00e0o t\u00edn hi\u1ec7u nh\u1eadn \u0111\u01b0\u1ee3c. \u0110\u1ed1i v\u1edbi t\u00edn hi\u1ec7u v\u1ec7 tinh r\u1ea5t y\u1ebfu, NF th\u1ea5p l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 t\u00edn hi\u1ec7u s\u1ea1ch v\u00e0 s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c. M\u1ed7i ph\u1ea7n nh\u1ecf c\u1ee7a decibel \u0111\u1ec1u quan tr\u1ecdng trong c\u00e1c \u1ee9ng d\u1ee5ng chuy\u00ean nghi\u1ec7p \u0111\u00f2i h\u1ecfi cao. NF th\u1ea5p c\u00f3 th\u1ec3 l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa vi\u1ec7c b\u1eaft t\u00edn hi\u1ec7u v\u00e0 kh\u00f4ng nh\u1eadn \u0111\u01b0\u1ee3c g\u00ec ngo\u00e0i ti\u1ebfng \u1ed3n.<\/p>\n

T\u0103ng<\/h3>\n

T\u0103ng l\u00e0 m\u1ee9c \u0111\u1ed9 LNB khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u. B\u1ea1n c\u1ea7n \u0111\u1ee7 t\u0103ng \u0111\u1ec3 v\u01b0\u1ee3t qua m\u1ea5t m\u00e1t t\u00edn hi\u1ec7u trong c\u00e1p \u0111\u1ed3ng tr\u1ee5c ch\u1ea1y t\u1eeb b\u00e1t \u0111\u1ebfn b\u1ed9 thu trong nh\u00e0 c\u1ee7a b\u1ea1n. Tuy nhi\u00ean, qu\u00e1 nhi\u1ec1u t\u0103ng c\u0169ng l\u00e0 v\u1ea5n \u0111\u1ec1. N\u00f3 c\u00f3 th\u1ec3 l\u00e0m qu\u00e1 t\u1ea3i b\u1ed9 thu c\u1ee7a b\u1ea1n v\u00e0 th\u1ef1c s\u1ef1 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t. M\u1ee5c ti\u00eau l\u00e0 t\u00ecm s\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p cho h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n, kh\u00f4ng ch\u1ec9 ch\u1ecdn LNB c\u00f3 s\u1ed1 t\u0103ng cao nh\u1ea5t.<\/p>\n

Ti\u1ebfng \u1ed3n pha<\/h3>\n

\u0110\u00e2y l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng cho truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 nh\u01b0ng th\u01b0\u1eddng b\u1ecb b\u1ecf qua. Ti\u1ebfng \u1ed3n pha cao c\u00f3 th\u1ec3 l\u00e0m sai l\u1ec7ch th\u1eddi gian c\u1ee7a t\u00edn hi\u1ec7u k\u1ef9 thu\u1eadt s\u1ed1, d\u1eabn \u0111\u1ebfn l\u1ed7i d\u1eef li\u1ec7u (t\u1ef7 l\u1ec7 l\u1ed7i bit cao). N\u1ebfu b\u1ea1n x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, LNB c\u00f3 ti\u1ebfng \u1ed3n pha th\u1ea5p l\u00e0 \u0111i\u1ec1u b\u1eaft bu\u1ed9c. \u0110i\u1ec1u n\u00e0y nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a t\u01b0 duy h\u1ec7 th\u1ed1ng, l\u00e0 m\u1ed9t ph\u1ea7n c\u1ed1t l\u00f5i trong tri\u1ebft l\u00fd thi\u1ebft k\u1ebf c\u1ee7a ch\u00fang t\u00f4i t\u1ea1i Safari Microwave.<\/p>\n

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

LNB t\u1ed1t nh\u1ea5t kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1i c\u00f3 nhi\u1ec1u t\u00ednh n\u0103ng nh\u1ea5t. N\u00f3 l\u00e0 c\u00e1i ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi c\u00f4ng vi\u1ec7c c\u1ee7a b\u1ea1n. Ch\u1ecdn c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p cho \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o th\u00e0nh c\u00f4ng.<\/p>\n

  1. Hi\u1ec3u r\u00f5 v\u1ec1 LNB l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c nh\u1eadn t\u00edn hi\u1ec7u v\u1ec7 tinh v\u00e0 tr\u00e1nh nh\u1eefng sai l\u1ea7m t\u1ed1n k\u00e9m.\r \u21a9<\/a><\/p><\/li>

  2. Kh\u00e1m ph\u00e1 \u01b0u v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a LNB ph\u1ed5 qu\u00e1t \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh s\u00e1ng su\u1ed1t cho h\u1ec7 th\u1ed1ng v\u1ec7 tinh c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

  3. T\u00ecm hi\u1ec3u c\u00e1ch LNB \u0111\u01a1n b\u0103ng c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a t\u00edn hi\u1ec7u v\u1ec7 tinh c\u1ee7a b\u1ea1n.\r \u21a9<\/a><\/p><\/li>

  4. Kh\u00e1m ph\u00e1 l\u00fd do t\u1ea1i sao \u0111\u1eb7c t\u00ednh ti\u1ebfng \u1ed3n l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng cho LNB v\u1ec7 tinh v\u00e0 c\u00e1ch n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u.\r \u21a9<\/a><\/p><\/li>

  5. Hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ch\u1ecdn LNB ph\u00f9 h\u1ee3p cho hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh.\r \u21a9<\/a><\/p><\/li>

  6. Kh\u00e1m ph\u00e1 t\u1ea7m quan tr\u1ecdng c\u1ee7a LNB \u0111\u01a1n b\u0103ng trong c\u00e1c \u1ee9ng d\u1ee5ng v\u1ec7 tinh chuy\u00ean nghi\u1ec7p v\u00e0 nhi\u1ec7m v\u1ee5 quan tr\u1ecdng.\r \u21a9<\/a><\/p><\/li>

  7. T\u00ecm hi\u1ec3u \u00fd ngh\u0129a c\u1ee7a ti\u1ebfng \u1ed3n pha trong vi\u1ec7c duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n d\u1eef li\u1ec7u cho truy\u1ec1n th\u00f4ng t\u1ed1c \u0111\u1ed9 cao.\r \u21a9<\/a><\/p><\/li><\/ol><\/div>","protected":false},"excerpt":{"rendered":"

    Are you struggling to choose the right Low-Noise Block Downconverter1? Picking the wrong one can lead to poor signals, wasted money, and an overly complex system. Let’s clarify your choice. The two main types of LNB are Universal LNBs2, which switch between multiple frequency bands and polarizations, and Single-Band LNBs3, designed for a specific frequency […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-12083","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12083","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=12083"}],"version-history":[{"count":13,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12083\/revisions"}],"predecessor-version":[{"id":12178,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/posts\/12083\/revisions\/12178"}],"wp:attachment":[{"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/media?parent=12083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/categories?post=12083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/safarimw.com\/vi\/wp-json\/wp\/v2\/tags?post=12083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}