SU242224A1 - DEVICE FOR TRAINING RADIO TELEGRAPHERS - Google Patents

Description

(In preparing radio-telegraph, phi, station, devices are used that contain a light panel, typewriter simulators, transmitters, and Morse code sensors. However, these devices are cumbersome and inconvenient to operate, or have relatively low automation, or are very complex. .

The proposed device differs from the well-known original combination, the well-known Morse code transmitter, decoder and light board.

The described device makes it possible to free the trainee from additional manipulation of the device and to devote more attention and time to monitoring and correcting errors. This is achieved by the fact that the light is connected to the transmitter via a descrambler.

On the fit. 1 shows a block diagram of the proposed device; in fig. 2 is a block diagram of a distributor of elements of a Morse code mark; in fig. 3 is a decryption scheme.

The device consists of a transmitter 1, a decoder 2 of the Morse code, and a light bar for 3.

The transmitter is applied to the usual, converting encoded on, punched tape signs into elements of this sign by Morse code.

The keys are identical to keys on a typewriter. These are indicated by a finger these marks must be imprinted. For specialists who write Morse code with a pencil, the signs on the scoreboard are in words.

The decoder of the Morse code consists of the scheme of the distributor of the elements of the sign (see Fig. 2) and the decryption scheme (see Fig. 3).

The distributor circuit consists of three electronic 4, 5, 6, one polarized 7 relays, pulse counter 8, delay line 9, charge spindles 10, defining contact 11, inserted into head 12 of transmitter 13 so that the start pin 14, moving away from contact 15 (the stop contact 16 at this moment approaches the closure), closes with the determining contact 11 (after closing the stop contact 16).

The decryption scheme consists of the following schemes: us 17 and the corresponding channel selection schemes; 18 (see Fig. 3).

The memory circuit consists of ten groups of paired relays 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, each of which consists of a relay RF and relay OP-13.

Conversely - 24, 25, 26, 27, 25 elements of the sign "dash.

An input — an element of a sign — each pair is connected through an opposite pair to the output — an element of the sign — the preceding straight and-adjacent pair — and the output — the Mark's set — is removed sequentially with a subsequent straight, and then an adjacent pair.

The circuit for selecting the corresponding channel consists of four relays, connected to the main relay of the nerve four groups of the pa.ti te circuit that store the element of the “tochka” sign. The inputs of the contact groups of the circuit, the choice of the corresponding channel are connected to the outputs — the sign set — in the memory circuit.

When the transmitter is working from it, the elements of the Morse code sign according to the perforation on the tape arrive at the students' phones. At the same time, the impulses from the determining start and stop contact B come to the distributor circuit.

The distributor works as follows.

If the impulse from the defining contact 11 came along with the impulse from the stop contact 16 (the relay 7 in this case will be in the position "P -" positive), then the element of the sign "point" is determined by the impulse from the latter. If the impulse from the determining contact arrived, but there was no Impulse from the stop contact., Then the next arrival of the stop impulse determines the element of the sign "dash." If the impulse from the additional contact arrived and the relay 7 was in the “negative” position, then the element of the “pause” sign (the stop contact in this case will not close) is determined. If the number of pulses from the determining contact, which step on the counter, has reached the number set by switch P, then the element of the character "space" is determined.

From the distributor, the elements of the mark and Morse code are fed to the decoding circuit.

The decryption scheme works as follows.

The paired relay groups memorize the elements of the sign, the dot, the dash and the order of their arrival, and the memory group, the last element of the sign, opens a channel to one of the contact groups of the appropriate channel selection circuit to pass through the element of the pause sign to the channel. corresponding to the sign received in

memory scheme.

The moment of entry of the sign element "pause with electronic relay 5 can be regulated by the charging chain potentiometer 10, and since the voltage from this channel goes directly to the indicator lights of the light panel, then the beginning of the indication of the sign received from the transmitter to the phones of the learner may be delayed .

End of sign indication and reset in the circuit

deciphering occurs from the PM, the pulse from the starting contact, which will return the counter and the electronic relay to the initial positions, after which the delay line will reset.

Subject matter

A device for training radio telegraphs, containing a light board and a decoder, characterized in that, in order to free the student from additional manipulation by the device, by automatically displaying the signs received on the phones of the trainees, the light board is connected to the transmitter via a decoder.