Product Detail
The Heil Sound Pro 7 is a top - notch aviation - style headset made for amateur radio use in noisy environments. Its specially crafted foam - gel ear pads not only cut out 26 dB of outside noise but also offer outstanding comfort. As a true dual - channel, stereo headset, the Pro 7 Series comes with an audio balance control. This allows you to fine - tune the left earphone volume to match the right. There's also a unique phase - reversal switch that helps you pick up weak signals easily. The latest Pro 7 version has a monitor jack, so a second operator can plug in headphones and listen in. The low - distortion Dynamic HC - 7 microphone element has a frequency response from 100 Hz to 12 kHz. It has well - balanced highs and lows, with the traditional Heil speech articulation rise centered at 2K - 4KHz. The impedance is 600 ohm, making it great for clear speech. Key features include a large PTT switch, military - grade straight and coiled cables, an extra set of ear pads, and washable cotton ear pad covers. Technical specs cover generating elements (Dynamic iC | iC Electret), frequency response (100 Hz - 12 kHz | 35 Hz - 12 kHz), polar pattern (Cardioid | Cardioid), impedance (600 Ohms | 1.5 k ohms), output level (- 57 dB at 1 kHz | - 48dB at 1 kHz), weight (17 oz | 17 oz), and required adapters (AD - 1 Series | AD - 1 series, AD - 1 - iC included).
Using the Heil Sound PRO7 - ICRD headset is easy. First, put on the headset and adjust it for a comfortable fit. The ear pads should cover your ears well to get the best noise - reduction. To use the audio balance control, just turn the knob until the sound in both ears is equal. If you're having trouble hearing weak signals, flip the phase - reversal switch. For the monitor jack, if you have a second operator, simply plug their headphones into it. When it comes to maintenance, keep the headset clean. You can wash the cotton ear pad covers regularly. Also, be gentle with the cables, especially the coiled one, to avoid damage. Don't expose the headset to extreme temperatures or moisture. If you need to replace the ear pads, use the extra set provided. And when using the PTT switch, press it firmly but not too hard. Always make sure the correct adapter is connected according to the technical specifications for proper operation.
