Hendricks QRP Kits
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Two Tone Test Generator

The Hendricks Two Tone Generator provides the builder with a universal two tone generator to test the quality of an ssb transmitter by injecting two non-harmonic tones (700 Hz and 1900 Hz) into the microphone input, and evaluating the displayed envelope output with an oscilloscope. The device has two outputs, one for a direct connection (33K ohm) to the transmitter microphone input, and another with an output to drive a speaker so that the microphone can also be included in the test. Line output amplitude is adjustable from approximately 250 uV to 2.50V p-p.

The kit comes complete with all the electrical/mechanical components. It is designed as a board/component only kit to be used as is, mounted with rubber feet, or the user could mount the board in a chassis, see page six. It uses all through hole components, and can be easily assembled with the normally available kit building tools. It is powered by a board mounted, 9 volt battery, (not included).

Supporting Files and Documents

 Two Tone Test Generator Assembly Manual (4/20/13 update)

Ordering Information

You may use our Order page to order the Two Tone Test Generator by mail using check or money order. or

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. For more information about our shipping charges please take a look at our Order Form page. 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.

Orders of multiple kits that I can ship in the same box will have shipping costs adjusted and the excess will be refunded.

Two Tone Test Generator: $50.00
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Please use our Order page to order by mail.

Page last updated: 09/27/2014, 14:05:20
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