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Phoenix Module Kits

Phoenix offer a number of simple kits that you can build into your own equipment or any case you like. All kits come with full instructions and are complete with a high quality PCB and all the parts you need to build the module, the instructions are also available from this page. We suggest that you download and read the instructions before you purchase any kit.

I can normally provide just the PCB if you wish to use the instructions to build your own,

Contact sales@phoenixkitsonline.co.uk for more information.

The Magic Eye ..  CW Centre Tune Indicator  (new PCB)

The magic eye CW Centre Tune indicator is a great way to know your tuned bang on frequency when trying to make a CW contact, the Magic eye has a very narrow active bandwidth and you  need to be within a few 10's of hertz of the incoming signal in order for the magic eye to light, tuning is made very easy and if like me you tone deaf then you will wonder how you managed before with out one.

Can be fitted in a external speaker and will work with high level audio or can be fitted across the volume control in you home brew special rig, very flexible.


Select PayPal here for UK ONLY  including postage  Total charge £14.50

Select PayPal here for EU ONLY including postage  Total charge £15.50

Select PayPal here for DX ONLY including postage  Total charge £17.00

OSK Iambic Keyer Module

The OSK-1 Keyer is a feature rich low cost memory Keyer, offering features that you would expect from keyer’s much more expensive. The CW training mode is excellent and worth building the keyer just for this feature.


The Keyer is built around a small but powerful microcontroller. The code for the chip is open source from Jan DK3LJ who developed the original program, later modified by Jack AL4SV and then further modified by Don WD9DMP who made some changes that polished Jan's code even more .


The finial product rivals professional keyer’s costing many times the price.


This open source code is now installed onto a Attiny85 chip, It fits on a small PCB and can be built in less than an hour.


Here is a list of its features.

Iambic A, B, Ultimatic modes
DAH Priority Mode
Paddle Swapping
Sidetone Toggle
Adjustable Sidetone Pitch
ATU Tune Feature (20 Sec Key Down)
with one touch cancel
TX Keying Toggle (Sidetone only for practice)
TX Level Inverter mode
WPM Speed feedback
4 x 100 char Memory’s
Automatic Beacon (for FOX hunts extra)
Callsign CW Trainer
(Sends random callsign, users send back)

Select PayPal here for UK ONLY including postage  Total charge £12.50

Select PayPal here for EU ONLY including postage  Total charge £13.50

Select PayPal here for DX ONLY including postage  Total charge £15.00

uCPO Universal Code Practice Oscillator

Not another Code Practice Oscillator I hear you cry!, Yes but this is a bit different from the rest.

I have been asked many times if my practice oscillator will work with Iambic paddles, well until now the answer as been 'No'.... This is where this new oscillator comes in.  This is built around a small but powerful microcontroller that will automatically sense what type of key is plugged in, if its a traditional straight key the oscillator will act as all other practice oscillators and emit tone when the key is pressed. If a paddle key is inserted then the microcontroller will automatically switch itself to Iambic mode and now will generate dits and dahs depending on which paddle is pushed, the oscillator has a speed control that will adjust the speed of the keyer.

Thats not the end of it. It also now as a 4 mode Morse tutor built in too, rather like the old Datong D70 from the 80's. but with extras!  Read the instructions and watch the video below for full information.

To complete the oscillator you will need to source your own case and a 9v battery ! (PP3)


New Firmware version now out that allows the user to change the WPM and The Gap

UK ONLY including postage  Total charge £18.00

EU ONLY including postage  Total charge £19.50


DX ONLY including postage  Total charge £22.50

SPO Simple Code Practice Oscillator

Old School Morse Practice oscillator, Simple low cost and effective!

This is a good quality CW practice oscillator .It uses a different chip and circuit than the  orginial SPO-1. This offers a smoother / louder control of the volume, a better tone quality and more stable frequency over the full volume range. A great choice for anyone undertaking a construction project as part of a Ham Radio training course.
The kit is complete with a 50mm loudspeaker, all parts and high Quality PCB.

UK ONLY including postage  Total charge £9.50

EU ONLY including  postage  Total charge £12.00

DX ONLY including  postage  Total charge £14.50

FPK Flat Pack Key

When starting to learn how to send Morse code it is always advisable to start with the straight key. The problem is that Morse keys are expensive and this can discourage people from learning the code. Many People try to make their own key and we have all seen simple designs made from hacksaw blades and drawing pins. Often these designs work but are difficult to reproduce and lack any form of adjustment.
This Flat Pack Key (FPK) is designed to be low cost and ideal for anyone needing a simple key suitable for classroom or back packer use. My own straight key, a  Pettersson Swedish pump key cost over 30 to 40 times the price of the FPK and I would not be comfortable to take it out on a field day trip for fear of damage or losing it.
The FPK is easy to build but will require you to solder one PCB connector and capacitor.
The key is supplied unbuilt in flat pack style.

UK ONLY including postage  Total charge £8.00

EU ONLY including postage  Total charge £9.00

DX ONLY including postage  Total charge £11.00

CW  500Hz add on filter for older radio's

Many older receivers have no CW filter fitted and to try and obtain a suitable filter
(if available) would be very difficult and expensive. This little module  should be fitted just before the volume control of the receiver and will provide a very effect CW audio filter that will greatly enhance reception in this mode, the user will have to fit a by pass switch if you want to be able to switch it in and out. It has a centre frequency of around 700Hz.
The filter design is not unusually as it is based around a dual op-amp but the design was by Tim Walford of Walford electronics (reproduced with permission). Profits of this particular module kit will be donated to the NHS charities . Lets support the NHS!

UK ONLY  including postage  Total charge £7.50

EU ONLY  including postage  Total charge £8.50

DX ONLY including postage  Total charge £9.90

RF Noise Source

This module is designed to help with setting up many different homebrew radio and audio projects, it will produce a strong white noise type signal starting at low audio frequencies and up to the VHF spectrum.
The noise source can be used in a number of ways.
It useful for testing audio and RF filters in Ham radio circuits, They can really be helpful when aligning homebrew radios filters and checking losses in LPF’s.
The traditional approach which is tried and tested is very simple, a RF noise source is amplified and fed into the front end of the radio being tested, spectrum analyser software on a PC is then used to look at the filter response
OK  how do we get a noise source to amplify? Well many years ago some design engineer must have been asked to make a regulated voltage source but to do it has cheap as possible. They used a Zenner diode and resistor and to keep the cost down they didn’t put a capacitor across the Zenner, it saved a few pence BUT it was found that by using it this way a lot of noise was being produced, this noise was present right up to VHF frequencies, not what was wanted  at that time but something that we can exploit in our circuit.

UK ONLY including postage  Total charge £6.50

EU ONLY including postage  Total charge £7.50

DX ONLY including postage  Total charge £8.50