AKG MKA20 Antenna Cable 65 ft BNC to BNC 50 Ohm RG 58 Wireless Systems

AKG MKA20: The 65 Ft Run That Gets the Antenna Out of the Rack

The AKG MKA20 is a 65 ft (20 m) antenna cable for wireless systems, built from RG 58 coaxial cable with a 50 ohm characteristic impedance and terminated in gold-plated BNC connectors on both ends. It is specified for connecting external antennas, antenna boosters, antenna booster supplies, antenna power splitters and receivers, and the length is the reason it exists rather than a packaging choice. Where the 16 ft version handles wiring inside and around a rack, this one crosses a room, climbs to a truss position or reaches a wall plate on the far side of a chamber. The AKG item number is 6000H02050. It is the cable that lets antenna placement be an acoustic and RF decision instead of a furniture decision.

Why Antenna Position Beats Every Other RF Adjustment

Reach is the entire technical argument for a 65 ft antenna cable, because radio performance in a real building is decided far more by where the antenna sits than by anything adjustable at the receiver. A wireless receiver mounted in a rack has its antennas inside a grounded metal enclosure, often behind a closed door and surrounded by amplifiers and power supplies, which both shields the antenna from the transmitters and floods it with local electrical noise. Moving the antenna to a position with clear line of sight to the performers, presenters or delegates raises the received signal directly, and a raised signal is what buys the headroom that prevents dropouts. Lecture-hall managers and house-of-worship techs who have chased intermittent dropouts for months usually find the fix is a longer antenna cable, not a different microphone.

RG 58, 50 Ohms and What the Numbers Guarantee

Coaxial construction in RG 58 with a 50 ohm characteristic impedance is what makes a run of this length usable rather than merely long. Characteristic impedance describes how a cable presents itself to the radio energy travelling through it, and matching that figure to the 50 ohm antenna ports on receivers, splitters and boosters is what stops signal being reflected back down the cable instead of delivered; a mismatch wastes signal exactly where there is least to spare. Gold-plated BNC connectors add a mechanical guarantee to the electrical one, since a bayonet coupling locks positively with a quarter turn and the plating resists the surface corrosion that slowly raises contact resistance in a permanently installed run. Over a 65 ft path, both details matter more than they would on a jumper inside a rack.

Planning a Long Antenna Run on Site

Installation planning for a run this long is mostly about where the cable goes and what sits at the far end, so a designer maps the path before ordering anything else. An antenna booster placed at the antenna end and its booster supply in the rack are a common pairing on long runs, since amplifying the signal before it travels is more effective than amplifying it after it has already been attenuated. Route the coaxial cable away from mains wiring and dimmer feeds, leave a service loop at both ends, and label each end during the first commissioning pass so a future fault can be isolated in minutes rather than hours. AV integrators fitting out council chambers, gymnasiums and touring racks all treat those steps as standard practice on any run that leaves the rack.