DE443352C

DE443352C - Circuit arrangement for sending or receiving electrical waves

Info

Publication number: DE443352C
Application number: DEH85099D
Authority: DE
Original assignee: Dr Erich F Huth GmbH
Current assignee: Dr Erich F Huth GmbH
Priority date: 1921-04-13
Filing date: 1921-04-13
Publication date: 1927-04-26

Description

(H 85099(H 85099

In Radiotelephonienetzen ohne, mit und längs Draht ist es erforderlich, daß jeder Station mindestens eine Empfangs- und mehrere Sendewellen zugeteilt werden, je nachdem, wieviel Stationen direkt einander anrufen oder miteinander verkehren sollen.In radio telephony networks without, with and lengthways wire, it is necessary that every station at least one receive and several transmit waves are allocated, depending on how many Stations should call each other directly or communicate with each other.

Eine Drahtwellentelephonieanlage (z. B. längs Kraftleitungen) möge ein Beispiel zeigen.
In Abb. ι seien A, B und C drei Elektrizi-A wire wave telephony system (e.g. along power lines) may show an example.
In Fig. Ι let A, B and C be three electrical

o tätswerkszentralen, deren jede mit Drahtwellentelephonie längs ihren Hochspannungsleitungen ausgerüstet wird. Alle drei Stationen sollen sich beliebig untereinander anrufen und miteinander verkehren können. Der Station A sei die Empfangswelle 400 m, B die Empfangswelle 500 m und C die Fmpfangswelle 600 m zugeteilt. Damit A dann nach Belieben mit B und C verkehren kann, muß sie mit den Sendewellen 500 und 600 m ausgerüstet sein, von denen sie die 600-m-Welle braucht, wenn sie C anrufen will, und die 500-m-Welle, wenn sie B anrufen will. Eine tragbare Station, die von Streckenkontrolleuren z. B. benutzt werden soll, um von jedem Punkt der Hochspannungsleitungen aus mit jeder der Stationen^, B, C in Verbindung zu treten, muß in der Lage sein, alle drei Wellen zu senden und zu empfangen.o Power plant centers, each of which will be equipped with wire-wave telephony along their high-voltage lines. All three stations should be able to call each other and communicate with each other. Station A is assigned the receiving wave 400 m, B the receiving wave 500 m and C the receiving wave 600 m. So that A can communicate with B and C at will, it must be equipped with the transmission waves 500 and 600 m, of which she needs the 600 m wave if she wants to call C, and the 500 m wave if she wants to she wants to call B. A portable station used by route controllers e.g. B. is to be used to connect to each of the stations ^, B, C from any point on the high-voltage lines, must be able to transmit and receive all three waves.

Man könnte nun die Telephoniestationen so einrichten, daß, wenn z. B. die Station B mit der Wellenlänge 400 m die Station A angerufen hat, die Station A mittels eines Abstimmorgans, z. B. eines Variometers, sich senderseitig auf die Empfangswelle von B, 500 m, abstimmt, und wenn sie darauf von C angerufen wird, sich mit demselben Abstimmorgan auf die Sendewelle 600 m (die Empfangswelle von C) abstimmt. Der Telephonierende müßte also — gleichgültig, ob er nachher zwischen Sprechen und Hören umschaltet oder gegenspricht, d. h. gleichzeitig spricht und hört, wie bei den Posttelephonen — jedenfalls, bevor er antwortet, erst Abstimmungen vornehmen. Denn z. B. Druckknopfeinstellung der jeweiligen Sendewelle allein ohne Nachstimmung wäre bei solchen Abstimmapparaten kaum möglich, weil die festen Abstimmorgane bei der Montage nur durch sehr langwierige Arbeit, wahrscheinlich aber gar nicht so genau eingestellt werden können, daß für jede Sendewelle, also z. B. auf der Station A für 500 und 600 m, das Abstimmmittel (Variometer) stets die Stellung die gleiche sein kann. Es müßte olso auch hier außer der Druckknopf- oder Schaltereinstellung nachgestimmt werden. Dieser Abstimmungshandgriff,You could set up the telephone stations so that if z. B. the station B has called station A with the wavelength 400 m, the station A by means of a voting organ, z. B. a variometer, on the transmitter side on the receive wave from B, 500 m, and when it is called by C, it tunes with the same tuning organ on the transmit wave 600 m (the receive wave from C). The person making the phone should therefore - regardless of whether he later switched between speaking and listening or talking to the other, that is, speaking and listening at the same time, as with the postal telephones - at least first, before answering, should vote. Because z. B. push-button setting of the respective transmission wave alone without retuning would hardly be possible with such voting machines, because the fixed tuning organs during assembly can only be set by very tedious work, but probably not so precisely that for each transmission wave, so z. B. on station A for 500 and 600 m, the tuning means (variometer) can always be the same position. It would also have to be readjusted here in addition to the push-button or switch setting. This voting handle,

Claims

which can easily be forgotten when passing from one wave to the other and then suddenly makes communication with the station from which the call was made impossible, cannot be spared. According to the present invention, separate tuning means (variometer, capacitors or both) are to be provided for each shaft, which are completely independent of one another. Each wave can then * be set independently of the other when setting up the station, so that a pure switch or push-button circuit is possible. Any necessary retuning can always be carried out externally. However, this will only seldom be necessary as each wave is set individually and this setting remains unchanged when other waves are set. The switch that carries out the shaft switching would have to be set up in such a way that it only enables the tuning means assigned to the shaft in question. An example of a transmission circuit is shown in Fig. 2. Here, for example, .4 and A x are the antennas that take care of the transmission of the waves on the line. Both antennas are to be thought of as coupling organs for one and the same line (or line bundle). A coupling coil is connected between the two antennas, which is divided into two halves Sp, Sp, between which the current pointer Am and the variometer Vk (for tuning the smaller waves e.g. 500 m) and Vg (for tuning the large waves e.g. B. 600 m) are switched on. · For this purpose, a switch S is provided with three switching bridges shown horizontally in the drawing on a common control element indicated by dashed lines. One variometer Vk is connected approximately in the middle of the coil Sp drawn on the left, and the variometer Vg is connected to the free end of the coil Sp drawn on the right. The free end of the coil Sp shown on the left is led to a switch contact, approximately the middle of the coil Sp shown on the right is led to another switch contact. The secondary coupling coil A s can be switched in the same way: once the entire coil As shown on the left can be connected in series with the entire coil As shown on the right, while in the second position of the switch S only the two halves of these two coils As are connected in series. In the illustrated position of the switch S, the antenna A, the entire coil Sp (left), the ammeter Am, the variometer Vg and the entire coil Sp (right), the antenna Ax are connected in series. The secondary coupling coils A s are also switched on with their entire winding length; the associated 6 <switching positions are denoted by ι. In the other position, marked 2, of the switching bridges of the switch S, on the other hand, the antenna A, the left half of the coil Sp on the left, the variometer Vk, again the ampere 6; meter Am, the right half of the coil Sp on the right and the antenna A1 connected in series with one another. Likewise, only the corresponding halves of the secondary coupling coils A s are connected to one another. In the first position, tuning and coupling are set for large waves and the variometer Vk is switched off; in the second switch position, on the other hand, tuning and coupling are carried out for small waves, and 7; the variometer Vg is switched off. Instead of the variometer, capacitors can of course also be used for tuning. The same or a similar arrangement 8c can also be used in receivers if there is a need for a wave change. Patent claims: "

1. Circuit arrangement for sending or receiving electrical waves without, with or along wires with wave changes, characterized in that the antenna and the coupling or tuning systems of the transmitting and receiving apparatus are divided into two parts, so that the antenna arrangement can be grounded at the connection point of the two parts or a voltage node results and for each wave special additional tuning means as well as 9 "5 different parts of the coupling organs are switched on at the same time.

2. Arrangement according to claim 1 for two different waves, characterized marked io < net that when the antenna arrangement is set for one of the waves, both halves remain unchanged, including one additional tuning element, when setting on the other shaft, both halves of 10; Antenna arrangement shortened with the inclusion of another additional tuning element are switched on.

3. Arrangement according to claim 1 or 2, characterized in that the switch-on n < processing of the parts of the antenna arrangement and the transmission and reception system and the additional tuning means for each wave simultaneously and automatically, expediently by coupled and remote-controlled switches n; he follows.

1 sheet of drawings.