Lightweight Morse Code Staight Key - Practice Oscillator & TRS Cable

Description

Lightweight Micro Morse Code Key With Scout Oscillator
Super Lightweight Weighing In At Under 2 Ounces With The Plastic Base.
Great Where Weight Is An Issue. Perfect For Bugout Bags, Hiking Trips, Camping Or A Portable Key That Can Fit In Your Pocket!
Key Arm Pivots Using Two Double Shielded Steel Ball Bearings For A Smooth Ride.
The Base Plate Includes Super Grip Polyurethane Feet For Each Corner.
4 Holes Designed Into Baseplate For Alternate Mount Option.
The Key Uses A Standard 3.5MM Receptacle
(Tip & Sleeve Mono Or Stereo)
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Scout CPO Morse Code Practice Oscillator
3d printed Morse code practice oscillator uses 3 AAA batteries.
With adjustable volume and realistic tone as though you where transmitting.
Connects via a 3.5mm audio jack (stereo) use the tip and the ground.
Like the old Boy Scout signal training this CPO produces both sound and light from the front and back.
Adjustable volume and tone controls from 300-1000Hz.
Also has a headphone jack for private listening and practice.
All solder construction and ready to use upon arrival. (batteries are included)
The Scout CPO can also drive a positive keying transmitter up to 30V/500mA with the key jack.
Standard 3.5mm stereo with tip and sleeve connector.
OPERATION
Plug your straight key into the KEY jack.
This jack is a 3.5mm stereo using the tip and sleeve connections.
With the key down adjust the volume and tone controls as needed.
If using the headphone jack (SPKR stereo 3.5mm)
ALWAYS turn the volume control fully counter-clockwise BEFORE plugging in.
Then with the key down adjust the volume to a comfortable level.
Optionally plug a positive keying transmitter into the KEY jack.
The key jack also uses the tip (+) and sleeve (-) for keying the transmitter.
CIRCUIT BOARD INFO
The main circuit uses a simple 555 timer as an oscillator using C1, R3, R5,
and RV1 to determine the 300Hz-1000Hz range.
R7 and RV2 provide a volume control which then drives Q2 to drive the speaker.
Q3 Provides a buffer transistor to key a transmitter.
R4 limits the current and brightness to LEDS D1 & D2
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TRS Cable For Key & Oscillator
1 Male to Male 3.5mm Auxiliary Cable For Morse Code Keys.
Colors may vary from Black, White & Red.
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