Whole House FM Transmitter 3.0 (2 pack) The Broadcast Distance - Our FM Transmitter will let you broadcast 150 feet throughout your entire home, office, backyard, etc. Large Digital Screen Display - Easily read what frequency you're broadcasting on with the LCD screen display Covers Full FM Band - You can transmit across the entire public FM band (88.1 to 107.9) on both even and odd frequencies Adjustable 6.5 SMA helical antenna features a conducting wire wound tightly in the shape of helix, increasing efficiency without increasing your antenna size. US/EU Pre-emphasis matches the emphasis to the FM radios in your region and reduces noise at higher frequencies 110/220v AC Wall Adapter 12/24V DC Mobile Power Adapter Computer USB Adapter Internal 3 AA Battery Compartment 3.5mm () Stereo Jack RCA Adapter (red/white) 2.5mm Microphone Port (mic not included) Reverse-threaded Screw Attachment Interchangeable Wire Extension <span class="a-text-bold">Frequency Range:</span>88.0 ~ 108.0 in 0.1 MHz steps <span class="a-text-bold">Pre-emphasis:</span>US and EU Pre-emphasis Options <span class="a-text-bold">Frequency Response:</span>20Hz ~ 15KHz <span class="a-text-bold">Signal to Noise Ratio:</span>&gt;65dB <span class="a-text-bold">Audio Performance:</span>0.2% distortion <span class="a-text-bold">Stereo Separation:</span>40dB <span class="a-text-bold">LargeScreen Interface:</span>1.34 x 1.10 <span class="a-text-bold">Power Control:</span>Mechanical Power Switch <span class="a-text-bold">Tuning Design:</span>Stable PLL Technology <span class="a-text-bold">Dimensions:</span>4.1 L, 2.7 W, .9 D <span class="a-text-bold">Weight (w/ antenna):</span>3.7 ounces <span class="a-text-bold">Transmission Signal:</span>FM Stereo or FM Mono <span class="a-text-bold">FCC Part 15 ID:</span>XOA WHFM3 <span class="a-text-bold">Canada IC ID:</span>8728A-WHFM3 110/220V AC Wall Adapter 12/24V DC Car Adapter USB Power Cable RCA Stereo Audio Cable Stereo Y Cable Stereo Audio Cable