Description
The QTX VH45B is a handheld VHF wireless microphone system built around a compact desktop receiver. It runs on a fixed operating frequency of 174.5MHz and gives you a working range of up to 50 metres, which suits small venues, presentations, karaoke and community events where you need to move around without a trailing cable.
Everything you need to get going comes in the box. The receiver takes a 9 to 15Vdc 200mA power supply, and the handheld transmitter runs on a 9V PP3 battery, both supplied. A 6.3mm jack lead is included too, so you can connect the receiver straight to a mixer, amp or powered speaker. The transmitter has on/off and mute controls on the body, letting you cut the audio between uses without switching off the whole unit.
On the performance side, the system posts a signal to noise ratio of more than 85dB and total harmonic distortion below 0.2%, so speech and vocals come through clean. The handheld transmitter measures 250 x 50mm in diameter and weighs 280g, while the receiver is a small 150 x 110 x 35mm and weighs 190g, so it sits neatly on a desk or shelf. Note that VHF (very high frequency) systems use a single fixed channel, so this is a straightforward one-mic setup rather than a multi-channel rig.
Specification
| Power supply : receiver |
9 - 15Vdc 200mA (supplied) |
| Battery : transmitter |
9V PP3 (supplied) |
| Operating frequency |
174.5MHz |
| Maximum range |
50.0m |
| Output connection |
6.3mm jack |
| S/N ratio |
>85dB |
| THD |
<0.2% |
| Dimensions : transmitter |
250mm x 50mmØ |
| Dimensions : receiver |
150mm x 110mm x 35mm |
| Weight : transmitter |
0.28KG |
| Weight : receiver |
0.19KG |
Downloads
Product Manual
Frequently Asked
What is supplied in the box?
The VH45B comes with the handheld transmitter, desktop receiver, a receiver power supply, a 9V PP3 battery for the transmitter and a 6.3mm jack signal lead.
What frequency does it run on?
It operates on a single fixed VHF frequency of 174.5MHz.
How far will the microphone work?
The maximum range is 50 metres in good conditions with clear line of sight to the receiver.
How do I connect the receiver to my system?
The receiver uses a 6.3mm jack output, so you can run the supplied lead into a mixer, amplifier or powered speaker.
Can I run more than one microphone at once?
No. This is a single-channel VHF system on one fixed frequency, so it is designed for one microphone at a time.
How is the transmitter powered?
The handheld transmitter runs on a single 9V PP3 battery, which is supplied. It also has on/off and mute controls on the body.