AKG HT470 C5 BD8 Wireless Handheld Transmitter Condenser 570-600 MHz

AKG HT470 C5 BD8: Condenser Handheld Tuned to Band 8

The AKG HT470 C5 BD8 50mW is an analog UHF handheld wireless transmitter carrying the C5 cardioid condenser head and tuned to frequency Band 8, 570.1 to 600.5 MHz, at 50 mW of effective radiated power. Across 30 MHz of switching bandwidth it offers 1,220 carrier frequencies in 25 kHz steps with up to 24 simultaneous channels recommended, and the audio path measures 35 to 20,000 Hz with 120 dB-A signal-to-noise and 0.7 percent distortion at 1 kHz. A pilot tone is transmitted continuously to prevent unexpected startup noise, a leading-edge dipole antenna is built into the body, and an LC display reports remaining operating time in hours. Setup is optical, with the companion SR470 receiver programming the transmitter by infrared. It is the condenser handheld bought to match a Band 8 system already in the rack.

Band 8, the 600 MHz Boundary and Coordinating Around It

Frequency Band 8 spans 570.1 to 600.5 MHz, and its upper edge sits precisely at the boundary that regulators in the United States redrew when spectrum at and above 600 MHz was reallocated to mobile broadband. Wireless microphone operation inside that reallocated range is now restricted, so while the great majority of Band 8 falls below the boundary, the top of the band brushes against it and the legally usable portion depends on current local regulations. Confirm that Band 8 operation is permitted where the system will work, and coordinate carriers below the restricted range before the rig is committed; the same check applies to the SR470 receiver in the rack, because it occupies the same band. With 1,220 selectable frequencies across 30 MHz of switching bandwidth there is normally ample room to place every channel inside a permitted segment, and doing that check deliberately is simply part of commissioning a wireless system properly.

What a Condenser Capsule Adds in the Hand

Fitted to this transmitter is the C5 head, a cardioid condenser rated to 140 dB SPL, and the capsule technology is the whole reason a buyer chooses this version over the dynamic one. Condenser capsules work by measuring the tiny capacitance changes of an extremely light membrane, so their moving mass is a fraction of a dynamic capsule's coil and they track fast transients and the top octave with much greater precision; the audible result is clearer consonants, more air on a held note and a sense of the voice reaching further into a room. Cardioid pickup then collects the room slightly more evenly than a tighter pattern, which flatters a controlled space and suits a performer working at a comfortable rather than a punishing distance from the grille. Vocalists on in-ear monitoring, cantors, keynote speakers and broadcast presenters are the personas this head was voiced for, because in each case intelligibility and detail matter more than surviving a wall of wedge monitors.

Pilot Tone, Silent Muting and Startup Noise

Continuously transmitting a pilot tone is how the system guarantees that switching a transmitter on or off never reaches the audience as a noise. A pilot tone is an inaudible signal the receiver treats as a key, opening its audio output only while the tone is present, so the instant a transmitter is powered down or walks out of range the receiver mutes rather than passing a burst of RF hiss into the PA; AKG describes the arrangement specifically as preventing unexpected startup noise. Alongside the tone, the transmitter carries data to the receiver so that the rack knows the state of the handheld rather than merely detecting a carrier. For a house technician handing a live microphone to a nervous presenter, or a worship team switching readers between segments, that combination is what makes a wireless channel feel as safe as a wired one.

Integrated Dipole Antenna, 50 mW and Working Range

Radiating from a leading-edge dipole built into the body, the transmitter has no external whip to catch on clothing, a strap or the inside of a flight case. Antenna design matters more on a handheld than people expect, because the performer's hand and body absorb UHF energy and a poorly placed element can be substantially shadowed by the person holding it; siting the dipole along the leading edge of the housing keeps it clear of the grip and gives the radiated pattern a fighting chance in a real hand. Effective radiated power of 50 mW then supports a working range around 330 ft (100 m) depending on the antenna system at the receiving end, which is well beyond the size of the rooms this class of system usually serves. Adding a remote antenna and a distribution splitter is what converts that headroom into reliability rather than raw distance.

Battery Behaviour, Charging Contacts and Deployments

One AA cell powers the transmitter, with 7 hours from an LR6 alkaline, 8 hours from an HR6 NiMH rechargeable and up to 14 hours available from a single AA depending on the cell fitted. Because the transmitter identifies the chemistry it has been given, the LC display's hours-remaining readout stays trustworthy across cell types rather than drifting when a different discharge curve unfolds, and reporting a number instead of a three-segment bar is what lets a monitor engineer make a decision before a second set rather than a guess. Charging contacts on the body allow a rechargeable cell to be refilled in the CU400 charging unit with the battery door closed, which is what makes a nightly routine workable across a fleet of handhelds. Theatres, concert halls, worship spaces with in-ear monitoring, corporate keynote and awards stages, and conference lecterns are where this Band 8 condenser handheld is put to work, usually as an added or replacement channel on a system already running.