It says practice machine; can it be used in real life applications? If not would you recommend a unit that would?

The key can be removed from the practice oscillator base, and hooked up to most CW transceiver / transmitters for real world applications after you are done using it for audible practice .

can you hook paddles up instead of the straight key ?

You can not. Paddles need additional intelligence and an additional circuit that will send dots or dashes when you move the paddles right or left. This is essentially like the buzzer on a door...as long as you press it buzzes, when you stop it stops.

Yes, you could transmit with it, but straight keys are so cheap why not just buy another one.

can you wire this to a radio

Dear Writer, 10x 4 msg. You can do if your radio has MORSE key wire's input (not morse key speaker input). Simply un-screw two wires which connects to morse key from inbuilt MFJ device then connect radio's morse key wires. Have a g8t day. 73. Mayank Gupta (VU3MFT)

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MFJ Enterprises Original MFJ-557 Deluxe Morse Code Practice Oscillator Straight Key w/Volume Control

MFJ Enterprises Original MFJ-557 Deluxe Morse Code Practice Oscillator Straight Key w/Volume Control

Product ID: 8370037

Details

Brand
MFJ
Color
Black
Controller Type
Button Control
Electric fan design
Blower
Mounting Type
Floor Mount
Power Source
DC or Battery

⚡110 VAC compatible

📏Compact size

🔋9V battery powered

€ 206.75

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔊 Unlock the Code to Communication Mastery!

COMPACT DESIGN - Perfectly sized for any workspace or travel.
MASTER MORSE CODE - Elevate your communication skills with precision practice.
UNMATCHED WARRANTY - Enjoy peace of mind with our No Matter What guarantee.
VERSATILE POWER OPTIONS - Choose between battery or AC for ultimate flexibility.
USER FRIENDLY VOLUME CONTROL - Tailor your practice experience to your preference.

The MFJ-557 Deluxe Morse Code Practice Oscillator is a versatile training tool designed for both beginners and seasoned operators. It operates on a 9V battery or 110 VAC, making it ideal for home or on-the-go practice. With a compact size of 8 1/2 x 2 1/4 x 3 3/4 inches, it fits seamlessly into any environment. Plus, it comes with MFJ's renowned one-year No Matter What warranty, ensuring your investment is protected.

Specifications

ASIN	B00OAHNA10
Best Sellers Rank	#511,976 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #81 in Industrial Electrical Oscillators
Blade Material	Plastic
Brand Name	MFJ
Color	Black
Connector Type	Standard AC Power Plug
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.2 4.2 out of 5 stars (377)
Electric Fan Design	Blower
Finish Type	Metallic
Indoor Outdoor Usage	Indoor
Is Product Cordless	No
Item Dimensions D x W x H	3.75"D x 8.5"W x 2.25"H
Item Weight	1.3 Pounds
Manufacturer	MFJ
Material	Alloy Steel
Model Name	MFJ-557
Model Number	MFJ-557
Mounting Type	Floor Mount
Number of Blades	3
Number of Speeds	3
Part Number	MFJ-557
Power Source	DC or Battery
Room Type	Classroom
Size	Medium
Special Features	Portable
Style	Modern
UPC	744288052305 796793893676 702646177954 757183018185
Unit Count	1.0 Count
Voltage	9 Volts

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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