The DIRECTV LNB 18 is a dual-output Ku-band Low-Noise Block (LNB) converter engineered for use with DIRECTV’s 18-inch round satellite dishes. As a core component of legacy DIRECTV systems, it specializes in receiving signals exclusively from the 101°W satellite, converting high-frequency (12.2–12.7 GHz) Ku-band satellite transmissions to a lower intermediate frequency (950–1450 MHz) compatible with 1–2 connected standard-definition (SD) receivers.
Figure 1 shows the front panel of 18-lnb.


Table 1 shows the Quick Specs.
| Parameter | Value |
|---|---|
| Input Frequency | 12.2–12.7 GHz (Ku-band) |
| Output Frequency | 950–1450 MHz |
| Local Oscillator (LO) | 11.25 GHz |
| Noise Figure | ≤1.1 dB |
| Output Ports | 2 |
| Specification | Details |
|---|---|
| Brand/Model | DIRECTV LNB 18 |
| Compatibility | DIRECTV 18-inch round satellite dishes |
| Satellite Coverage | 101°W (single satellite) |
| Input Band | Ku-band (12.2–12.7 GHz) |
| Output Band | 950–1450 MHz (IF signal) |
| Local Oscillator (LO) | 11.25 GHz |
| Noise Figure | ≤1.1 dB (low-noise reception) |
| Output Ports | 2 (F-connectors) |
| Supported Receivers | 1–2 legacy DIRECTV SD receivers |
| Housing | Weather-resistant plastic |
| Weight | ~0.5 lbs (≈0.23 kg) |

