a division of Milestone Technologies, Inc.
"Everything for the Morse    Enthusiast!"

Home Page What's New Search Contact Us Order Info

Palm Radio

Palm Radio Ceased Production

As inventory is exhausted we will remove the shopping cart links from Palm Radio products so you can quickly see what is still available.    I'm very sorry for any inconvenience, and of course Morse Express will service Palm Radio products as long as we can.  Thank you for supporting Palm Radio.

Marshall, N1FN

Tone Tube

Code Practice Oscillator

Tone Tube

Code Practice Oscillator

Palm Radio had several inquiries about a small tone generator in the past, so the »Tone Tube« has been developed recently to close a gap in the keying systems delivery program. The gray electronics module with the speaker is mounted into a black plastic housing (ABS, enhanced impact resistance), which serves as a resonator. 

Visually, the Tone Tube matches  perfectly with Palm Radio's Portable Key, and Mini Paddle with Code Cube but  it can easily be used with any straight key,  cootie key, or bug, and with the output of most electronic keyers--  that is, virtually any on/off straight key type device. For practice with a paddle you will need an electronic keyer such as the Code Cube). A built-in small speaker produces a smooth, shaped wave tone which is adjustable in frequency and volume. This speaker is automatically turned off when you plug in a stereo headphone. The Tone Tube is supplied in Palm Radio's "travel case" and includes a spare battery.

Operating time (with a replaceable CR2032):

  • Speaker, maximum volume - about 20 hours CW (20 mA)
  • Headphones - about 200 hours CW (2 mA)

Key input and headphone output: are via 3.5mm (1/8") stereo jacks,  and there is optical indiction of keying by LED.


tonetube1tonetube1 tonetube1tonetube1
  Tone Tube Tone TubeTone Tube without HousingPPK with Tone Tube  Tone Tube Manual

Tone Tube Code Practice Oscillator in travel case PR-TT $89 - Sold Out -
Replacement Battery CR2032 Lithium available here

Order on-line, or call 800-238-8205 for credit card orders
or call 303-752-3382 for more information


 HomeBack to Home Page    
 Questions or Comments? Write to us!  e-mail    Privacy Policy  FAQ
All text and images in this web site (comprising the registered domains,, and  are the intellectual property of Milestone Technologies or are used with permission of the copyright holder. Please ask for permission before "borrowing" or otherwise using any images or contents from this web site.
Copyright ©1996-2019, Milestone Technologies, Inc. All Rights Reserved