Laird Technologies – CB27 – Laird Technologies 26-28 DC Ground Base Load Antenna Black. Laird Technologies CB27 Laird 26-28 DC Ground Base Load Antenna Black The Laird CB27 26-28 MHz DC grounded base-loaded antenna. Internal and external contacts are gold plated for best conductivity. Low loss coil form adds dimensional and frequency stability. ABS material is injection molded around solid brass inserts to create a virtually indestructible housing that is virtually leak proof. All silver soldered joints ensure electrically and mechanically secure connections. Specifications CB27 Specific Frequency 26-28 MHz Gain dBi 2.15 dBi Mobile Antenna Mounting Type NMO Whip Material and Length Stainless Steel, 49 RF Connectors No Connector Maximum Power 500 W Mfg.