If you wish to look at an accessory piece of my equipment, you just click on it.
At this webpage you will find morse keys and dummy loads.
Straight key, Kent Engineers
This is a mechanically solid and steady straight key by Kent Engineers, which I use since a have a licence. Due to its weight (1200 g) it is however not much conditionally for the portable operation. What a pity! This key is also buyable from WiMo.
Modification: The nut for adjusting the resetting force can solve itself with the use easily. I screwed therefore an additional nut on it. In the picture this is visible as a silver colored nut by the rear part of the key.
Squeezer, Kent Engineers
So far yet I did not learn it to serve a squeeze key correctly and fast. Therefore this key by Kent Engineers was long time standing in the original packing up in my shack. This key is also buyable from WiMo.
The key is solid and due to it weight of 1200 g and the rubber feets are slip-resistant. The quality is the same as by the other Kent keys use by me. My key had found a new owner.
Wabbler, Kent Engineers
This is a mechanically solid and steady wabble-key by Kent Engineers, which I use since lately. Due to its weight (1100 g) it is however not much conditionally for the portable operation. What a pity! This key is also buyable from WiMo.
Modification: The nuts for adjusting the resetting force can solve itself with the use easily. I screwed therefore two additional nuts on it. In the picture this are visible as silver colored nuts by the side parts of the key. Additionally the replacement of the original springs made itself necessary, since the adjustment of the resetting force did not occur sensitiv enough. After softer ones were inserted, this succeeded however without problems.
Funky − a key using pressure sensors
Some surplus electronics companies are offering relatively inexpensive pressure sensors. Actually I wanted to see what I could do with one many times. Amazingly the sensors "played" well, so I started immediately to look for a project. I had long wanted a durable and light key. Therefore I decided to make a key using the sensors. A description of this key is available. The sensors I used are buyable from Conrad Electronic (FSR-151, order no. 182546).
PS. In the meantime Chuck Olson (WB9KZY) has undertake some futher experiments with this key and ascertain, that the key works better without the pressure sensors. His variation is named "Touch Paddle" and he sells it via Jackson Harbor Press (Photo by WB9KZY).
CWF − finger morse key, Gerd Lienemann, DF9IV
If you dissatisfied with the attitudes or the weights of morse keys then this key is exactly the correct key for you. It lies always ideally between the fingers and is extremely light. A description of this key is available.
Minkey, Englmar Wenk, DK1WE
The Minkey is intended specially for the use outside of the shack, because it weighs only 55 g. In spite of the small size the force and the hoisting can be adjusted sensitivly. It possesses a slide-restraining layer on the lower surface, but one should hold it with one hand during keying.
This key was buyable from QRPproject and from Funkamateur. The key is not any longer manufactured.
Palm Portable Key, Palm Radio
The Palm Portable Key is a straight key, which is housed in a stable aluminium profile in tension. The mechanical system is very precise with zero backlash and you can it slide-in in the housing. The leverage effect is adjustable in six steps from 60 to 250 g with a snap-in locking device. The key was made by Palm Radio (www.palm-radio.de), but they stopped production in 2018. Dimensions (slided-in): 2,5 × 2,5 × 7,9 cm.
Mini Morse Key, Markus Baseler, DL6YYM (BaMaTech)
The Mini Morse Key by Markus Baseler, DL6YYM, is my first straight key, which possesses two magnets instead of the otherwise usual spring. Thus a very sensitive attitude of the force is possible. The lever arm is embedded in two very small ball bearings, which are not accessible from the outside and which thereby cannot get dirty thus also with the rough portable use. The key is manufactured from high-strength aluminum, which was dark red anodized. The button is manufactured from black plastic. The key is supplied with a thin, very flexible and nevertheless robust cable (1 m long), which is already attached including a 3,5 mm jack. Markus has manufactured this morse key primarily for himself, however offers it over BaMaTech also to other interested people.
Technical data: baseplate 4 × 3 × 0,8 cm, altogether 5,3 × 3 × 2,3 cm, mass: 40 g, slip-resistant rubber feets
Palm Single, Palm Radio
The Palm Single is a wabble key, which is housed in a stable aluminium profile in tension. The mechanical system is very precise with zero backlash and you can it slide-in in the housing. And the connection cable can be removed for transport. The leverage effect is adjustable from 2 to 40 g. The key was made by Palm Radio (www.palm-radio.de), but they stopped production in 2018. Dimensions (slided-in): 2,5 × 2,5 × 7,9 cm.
Dummy loads as far as the eye can see
Sometime you need for tests on a transmitter or for comparative measurements a dummy load. Of course you can buy it nearly everywhere. Such "monsters" are however not necessary for QRP power! What should I do as QRPer e.g. with an enormous and expensive dummy load for 50 or 100 W or more? Therefore I would like to tell you a few suggestions for small and cheap dummy loads.
A commercial variant (picture left) is offered as terminal resistor for measuring instruments. They exhibit for 50 Ω and can handle up to 1 W.
If you want to build your own dummy load, then it seems to fail first because of the offered resistors. 50 Ω resistors with the necessary power are require large heat sink. Take therefore simply different resistors! Remind you of the Ohm's law and the parallel and/or series connection of resistors. In each good electronic shop you can buy non-inductive resistors for 0.25 W or 0.5 W. In some stores also such for 1 W or 2 W. Resistors made from carbon or metal oxid are good usuable. You can reread a few possible combinations here. If you solder this resistors to a suitable plug (picture right), then you receive a outstanding dummy load. In addition, you can solder SMD resistances on a PCB. No borders are set to your fantasy!