Pacific Antenna
Affordable QRP Antennas and Kits at exceptional value


Electret Microphone

The Hendricks Electret Microphone kit is a lightweight, easy to build accessory for the shack, or for portable phone operations. Leave the Heil at home on the desk, and don't worry about scratching it up. It has a high impedance (HiZ) element 2.2K ohm (Max), integral PPT switch, and it is perfect for backpacking or emergency use. The weight is a mere 1.4oz. (40gm.). All the components are provided, along with a 30" long flexible cable terminated with a 3.5mm molded stereo plug. The assembly manual is on-line, with general interface instruction links. Perfect for the BitX, MMR-40, and many SSB transceivers, consult your manuals for HiZ compatibility. Electret microphones require a very small amount of power to operate. This power is supplied on the audio lead through a dropping resistor, and a blocking capacitor is required on the radio side of the microphone input to keep the V+ from the audio input

  • Sensitivity: 44(0dB=1V/Pa,1KHZ)
  • Output impedance: 2.2K ohm (Max)
  • Frequency Range: 70-20KHz
  • Standard operating Voltage: 3.0V
  • Current Consumption: 0.5mA(Max)
  • S/N ratio: >58dB

Manuals and other useful information

 Electret Microphone Construction Manual (03/06/2013)

Ordering Information

Ordering electronically by PayPal using the buttons below.

When an order is placed through PayPal, shipping charges are automatically calculated then a confirmation email is immediately sent by PayPal. We also receive this same email, so please rest assured that we have logged your order into our books. No other order confirmation will be issued. Your kit will be shipped in 1-2 weeks after our receiving the order, unless otherwise stated. Thanks for your support.

Microphone: $15.00

Page last updated: 01/10/2017, 13:32:05
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