We use
cookies and similar technologies
to help give you the best experience on our site and to show you relevant advertising. If you continue to use this site, we’ll assume that you’re happy to receive all cookies
Morse Code Practice Oscillator With 555 Circuit MORSE-555
SKU Part Number:
CW-55-800
Produces Light & Sound As Well As A Headphone Jack For Private Listening.
Tone and Volume Controls On Front Panel
3.5mm Ear/Speaker and XMIT...
Read More
Read More
£60.00
£50.00
Availability: In stock
Seen this product cheaper elsewhere?
Call 0345 2300 599Produces Light & Sound As Well As A Headphone Jack For Private Listening.
Tone and Volume Controls On Front Panel
3.5mm Ear/Speaker and XMIT Output Jacks
Uses 3 AAA Batteries (Included)
Practice morse code with a straight key and this simple code practice oscillator. Like the old Boy Scout signal training sets of the 1930’s, this CPO produces both sound as well as light from the front and back. The CPO has adjustable volume and tone controls from 300-1000Hz along with a headphone jack for private listening. It can also drive a positive keying transmitter up to 30V/500mA with the key jack. SMD parts are pre-soldered, just complete the through hole components.
Battery Installation
With CWMorse silkscreen logo: Remove the 4 screws on the bottom panel. Insert 3 AAA batteries
observing the polarity as shown on the battery holder. Replace the bottom panel and 4 screws.
Older versions without the CWMorse silkscreen logo: Remove the 4 screws on the front panel. Slide
assembly and speaker out. Insert 3 AAA batteries observing the polarity as shown on the battery holder.
Place speaker on top of batteries, align the PCB and speaker with the slots in the enclosure and slide in
place. Replace the 4 screws on the front panel.
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
positivie keying transmitter into the KEY jack. The key jack also uses the tip (+) and sleeve (-) for
keying the transmitter.
NOTES
You may notice the tone drop as the volume is increased. This is normal.
You can increase the volume further by replacing the 3XAAA batteries with a higher voltage,
such as a 9V battery. Up to 14Vmay be used, however the LEDs will become very bright.
As the batteries become weak the tone will eventually stop functioning although the LEDs will
be dimly lit and a transmitter can still be keyed. Likewise the LEDs will extinquish but the
transmitter can still be keyed down to less than 1V of power.
Shipping:
We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.
Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]