eBay

Up for sale Echo processor Board to any HAM Radios.

Video demonstration of work this board.

Demonstration Echo processor UR6QW with IC-7300 - YouTube

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The device represents a board the sizes 35x30x10mm (1.4x1.2x0.4 inc). The small sizes allow to set a board directly in the casing of a hand mike.

A basis is PT2399 chip. It is ATsP/TsAP with sampling rate 44K. Delay period minimum - 30ms, maximum - 350ms. Also on an input of the device there is a microphone amplifier on low-noise NE5532.

Works with electret and dynamic microphones without alterations of the diagram.

Technical data:

Microphone low noise amplifier with function echo

Delay period minimum - 30ms

Delay period maximum - 350ms

Microphone level pot

Supply voltage 8 - 15V

Size 30 mm x 30 mm x 10 mm (1.4 x 1.2 x 0.4 inc)

Weight - 9g

Shipping.

Ships to Worldwide from Airmail with trucking.

After the package left Ukraine. The shipping is safe and fast. Usually it takes up to 14 - 45 days but it can be more or less delivery time depending on how quickly the package goes through Customs.