DE1014172B - Circuit arrangement for connecting the on-board telephone network of a ship to its radio intercom - Google Patents
Circuit arrangement for connecting the on-board telephone network of a ship to its radio intercomInfo
- Publication number
- DE1014172B DE1014172B DEH27469A DEH0027469A DE1014172B DE 1014172 B DE1014172 B DE 1014172B DE H27469 A DEH27469 A DE H27469A DE H0027469 A DEH0027469 A DE H0027469A DE 1014172 B DE1014172 B DE 1014172B
- Authority
- DE
- Germany
- Prior art keywords
- telephone network
- radio
- ship
- circuit arrangement
- board telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
Die Erfindung betrifft eine Schaltungsanordnung, die dazu dient, den Übergang von einem Bordtelefonapparat eines Schiffes auf dessen Funksprechanlage zwecks Führung eines Übersee-Funkgespräches herzustellen. The invention relates to a circuit arrangement which is used to transition from an on-board telephone set of a ship on its radio intercom for the purpose of conducting an overseas radio call.
Es ist bekannt, die Anschaltung des Bordtelefonnetzes an die Funksprechanlage zwecks Vermeidung von Rückkopplungserscheinungen über eine Gabelschaltung vorzunehmen, wie sie für Zweidraht- oder Vierdraht-Leitungsverstärker benutzt wird. Diebeiden Zweige einer solchen Gabelschaltung müssen hinsichtlich ihrer Impedanzen bekanntlich genau symmetriert sein. Diese Symmetrierung wird üblicherweise dadurch erreicht, daß die Impedanz des an den einen Zweig angeschlossenen Bordtelefonnetzes an den anderen Zweig durch eine gleich große zweite Impedanz nachgebildet wird.It is known to connect the on-board telephone network to the radio intercom for the purpose of avoidance to make of feedback phenomena via a hybrid circuit, as they are for two-wire or Four-wire line amplifier is used. The two branches of such a hybrid circuit must with regard to their impedances are known to be exactly balanced. This balancing is usually achieved in that the impedance of the on-board telephone network connected to one branch to the other branch is simulated by an equally large second impedance.
Bei Funkgesprächen von Bordtelefonteilnehmern auf Schiffen ist es ferner erwünscht, daß der Bordfunker seinen Telefonapparat, mit dem er den Teilnehmer verständigt hat, während der Gesprächsdauer angeschaltet läßt, um das Gespräch mithören und gegebenenfalls lenken zu können. Daher ist bei der Bemessung der Nachbildung auch die Impedanz des zu der angeschlossenen Leitung parallel geschalteten Mithörapparates zu berücksichtigen.In the case of radio calls from on-board telephone subscribers on ships, it is also desirable that the radio operator his telephone set, with which he has called the subscriber, during the duration of the call switched on in order to be able to listen in on the conversation and, if necessary, direct it. Therefore, when designing the simulation also includes the impedance of the connected in parallel to the connected line Listening device to be taken into account.
Ausgehend von der Tatsache, daß wegen der verhältnismäßig geringen Leitungslänge eines Bordtelefonnetzes die Leitungsimpedanzen gegenüber den Impedanzen der angeschlossenen Telefonapparate praktisch vernachlässigbar sind, so daß es für die Symmetrierung der Gabelschaltung genügt, wenn nur die Impedanzen der angeschlossenen Apparate berücksichtig werden, bringt die Erfindung einen Vorschlag, durch den eine besondere Nachbildungsschaltung überhaupt eingespart wird. Erfindungsgemäß wird der Mithörapparat als Nachbildung geschaltet. Es ist bei den zur Entkopplung von Mikrofon und Telefon eines Fernsprechapparates dienenden Gabelschaltungen bereits bekannt, an den Gabelübertrager zwei Telefone anzuschließen, von denen das eine als Nachbildung des anderen dient.Based on the fact that because of the relatively short line length of an on-board telephone network the line impedances versus the impedances of the connected telephones are practically negligible, so that it is sufficient for balancing the hybrid circuit, if only the impedances of the connected devices are taken into account, the invention makes a proposal, by which a special replica circuit is saved at all. According to the invention Eavesdropping device switched as a replica. There is one for the decoupling of microphone and telephone Telephone set serving hybrid circuits already known to the fork transmitter two telephones to connect, one of which serves as a replica of the other.
An Hand des schematischen Schaltbildes wird die Erfindung näher erläutert.The invention is explained in more detail using the schematic circuit diagram.
Hierin ist F der Telefonapparat der Funkkabine und T ein Teilnehmerapparat. Beide Apparate sind über die Adern α und b des Bordtelefonnetzes miteinander verbunden. W ist der Leitungswähler der Bordzentraie und Ü$ der Symmetrierübertrager der Gabelschaltung. Bei B ist der Ausgang des Empfängers Schaltungsanordnung zum AnschlußHere, F is the telephone set of the radio booth and T is a subscriber set. Both devices are connected to each other via the cores α and b of the on-board telephone network. W is the line selector of the on-board center and Ü $ the balancing transformer of the hybrid circuit. At B , the output of the receiver is a circuit arrangement for connection
des Bordtelefonnetzes eines Schiffesthe on-board telephone network of a ship
an dessen Funksprechanlageon his radio intercom
Anmelder:
HAGENUKApplicant:
HAGENUK
vormals Neufeldt & Kuhnke G. m. b. H., Kiel, Westring 431-451formerly Neufeldt & Kuhnke G. m. b. H., Kiel, Westring 431-451
Hans Hein, Kiel,
ist als Erfinder genannt wordenHans Hein, Kiel,
has been named as the inventor
und bei 5 der Eingang des Senders der Funksprechanlage angeschlossen zu denken.and at 5 the input of the radio intercom transmitter thinking connected.
Wie ersichtlich, ist der Telefonapparat F der Funkkabine nicht, wie bisher üblich, auf derselben Seite der Gabelschaltung wie die übrigen Teilnehmer, also in den Figuren an den rechten Zweig des Symmetrierübertragers angeschlossen, sondern an den linken, an dem bisher eine Nachbildung vorgesehen war.As can be seen, the telephone set F of the radio booth is not, as was previously the case, on the same side of the hybrid circuit as the other subscribers, i.e. connected to the right branch of the balun in the figures, but to the left branch, on which a replica was previously provided.
Kommt ein Funkgespräch für einen Teilnehmer an oder hat der Funker eine vom Teilnehmer gewünschte Funkverbindung aufgenommen, so verständigt er den Teilnehmer, indem er ihn über das Bordtelefonnetz anruft. Sobald der Teilnehmer seinen Handapparat abgehoben hat, ist die Gabelschaltung symmetriert, und der Funker stellt durch Einlegen der Schalter SE und ^5 den Anschluß an die Funksprechanlage für die Dauer des Funkgespräches her.If a radio call arrives for a subscriber or if the radio operator has established a radio link requested by the subscriber, he notifies the subscriber by calling him via the on-board telephone network. As soon as the subscriber has picked up his handset, the hybrid circuit is balanced, and the radio operator establishes the connection to the radio intercom for the duration of the radio call by inserting switches S E and ^ 5.
Claims (1)
Deutsche Patentschrift Nr. 858 265.Considered publications:
German patent specification No. 858 265.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH27469A DE1014172B (en) | 1956-06-30 | 1956-06-30 | Circuit arrangement for connecting the on-board telephone network of a ship to its radio intercom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH27469A DE1014172B (en) | 1956-06-30 | 1956-06-30 | Circuit arrangement for connecting the on-board telephone network of a ship to its radio intercom |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1014172B true DE1014172B (en) | 1957-08-22 |
Family
ID=7150584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH27469A Pending DE1014172B (en) | 1956-06-30 | 1956-06-30 | Circuit arrangement for connecting the on-board telephone network of a ship to its radio intercom |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1014172B (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE858265C (en) * | 1941-04-16 | 1952-12-04 | Siemens Ag | Circuit arrangement to avoid undesired backflow in hybrid circuits of double-voiced subscriber stations |
-
1956
- 1956-06-30 DE DEH27469A patent/DE1014172B/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE858265C (en) * | 1941-04-16 | 1952-12-04 | Siemens Ag | Circuit arrangement to avoid undesired backflow in hybrid circuits of double-voiced subscriber stations |
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