DIRECTV 21V Power Inserter for SWM LNBs PI-21 — 21 Volt Regulated Inline with F‑Type Ports

The DIRECTV PI-21 21 Volt Power Inserter supplies regulated 21V power and passes 2000 kHz–2150 MHz satellite signals to all DIRECTV SWM LNBs with minimal 2 dB insertion loss.

This compact PI-21 power inserter from DIRECTV is engineered to deliver the specific voltage and frequency handling needed by Slim Line Dish installations that use Single Wire Multiswitch (SWM) LNBs. It accepts standard F-type connections, runs on 100–120 VAC input, and is built to sit inline between your power source and the satellite feed so the LNB receives stable power while the receiver keeps full-spectrum signal throughput.

How does the PI-21 keep my DIRECTV SWM LNB powered reliably?

The PI-21 supplies a steady 21-volt feed tailored for DIRECTV SWM LNBs, avoiding under- or over-voltage conditions that could disrupt receiver communication. Its design keeps power delivery isolated from the coax signal path so receivers and LNBs operate as intended.

• Delivers regulated 21V suitable for DIRECTV SWM LNBs
• Accepts 100–120 VAC input from standard outlets
• F-type ports for direct inline connections
• Minimal insertion loss of ~2 dB

Will the PI-21 affect my satellite signal quality?

The unit is engineered for low insertion loss (approximately 2 dB) across the 2000 kHz–2150 MHz operational band, so it maintains usable signal levels while providing power. Properly installed, it should not degrade reception beyond the expected minor insertion loss and helps ensure LNB electronics remain powered.

• Frequency range: 2000 kHz to 2150 MHz
• Insertion loss: ~2 dB typical
• Inline placement prevents additional splitters from impacting signal
• Works with DIRECTV Slim Line Dish antenna systems

How do I install the PI-21 in my DIRECTV setup?

Installation is straightforward: place the PI-21 inline between the AC-powered supply and the coax feeding the SWM LNB using F-type connectors. Ensure the AC input (100–120 VAC) is connected per local electrical codes and verify cable terminations are snug to prevent signal leakage.

• Connect AC power to the unit (100–120 VAC) per instructions
• Use F-type connectors to link the inserter to the coax run
• Mount or place where coax runs remain dry and strain-free
• Confirm receivers detect the LNB and test signal strength

This PI-21 power inserter is designed specifically for DIRECTV Slim Line Dish and SWM LNB systems. It is not a universal satellite power supply—confirm compatibility with your dish model and cabling before purchase.

Who is this for? Installers, satellite technicians, and DIRECTV customers who use Slim Line Dish installations and SWM LNBs will benefit most from the PI-21. It suits anyone needing a compact, reliable inline power inserter that preserves satellite signal across the L-band frequencies used by DIRECTV while supplying the required 21 volts to downstream LNB components.