JPH03763Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transceiver, and more particularly to a repeater-compatible transceiver equipped with a tone addition function and a frequency offset function for use with a repeater.

In recent years, amateur radio repeaters have been permitted in Japan, making communication beyond line-of-sight distance possible.

As is well known, this type of repeater always receives signals at frequency A, and when it receives a voice with a specific code transmitted by user B, it converts the signal to frequency C and transmits it to user D. . User D
When transmitting, it transmits a voice with a code similar to the above code on frequency A, and when the repeater receives it, it transmits it to user B on frequency C, and users B and D Communication between them is now established.

Therefore, when a user uses a repeater, it is necessary to superimpose a certain tone on the audio (this tone serves as a key for access by the repeater), and the transmitting frequency and receiving frequency must be superimposed. must be set to the repeater frequency. Furthermore, if repeaters become popular in the future, it is expected that there will be a wide variety of tones as described above, and a complicated switching operation will be required, such as the need for switching settings. Therefore, it is easy to make a mistake in operation, and there is a risk that the repeater cannot be used, or that the frequency before switching (such as the frequency with which the other station was communicating) may become unknown while switching frequencies.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional ones, to enable easy operation to switch from a general communication state (not using a repeater) to a state in which a repeater can be used, and to An object of the present invention is to provide a transceiver that can be immediately reset to a normal communication state.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be explained below based on the drawings which are examples thereof.

In the figure, R is a receiving section, and the signal input from the antenna ANT passes through a high frequency amplifier 1, a frequency converter 2, an intermediate frequency amplifier 3, a demodulator 4, etc., and becomes an audible signal, which drives the speaker SP. It's summery.

A local oscillator 5 is connected to the frequency converter 2 so that the reception frequency can be changed by changing the oscillation frequency of the local oscillator 5.

T is a transmitter, where the low frequency signal from the microphone MC passes through a modulator 6, a frequency converter 7, a power amplifier 8, etc., and becomes high frequency power, and is sent to the antenna.
It is now sent from ANT. A local oscillator 9 is connected to the frequency converter 7, and by changing its oscillation frequency, the transmission frequency can be changed. 1
0 is a tone encoder, which can be connected to the input end of the modulator 6 via a switch _S1 . Reference numeral 11 denotes a tone variable setting section for varying the tone (for example, tone frequency, etc.) output from the tone encoder 10. Reference numeral 12 denotes an arithmetic processing circuit which can be switched between a normal state and a repeater compatible state in response to a signal from a switch _S2 which is turned on when the repeater is used. The arithmetic processing circuit 12 is
It has a function to set the oscillation frequency of the local oscillators 5 and 9, a tone variable setting function to open and close the switch _S1 , that is, a tone sending function, and a tone variable setting function to set the tone variable setting section. It is also possible to store memory contents such as the set frequency and scan frequency.

With the above configuration, when Switch S ₂ is set to the OFF state, all functions can be switched manually like a normal transmitter/receiver, while on the other hand, when Switch S ₂ is set to the ON state When this happens, the data (transmission/reception frequency and memory contents) when the switch _S2 is in the off state is stored, the local oscillators 5 and 9 are set to the repeater communication frequency, and the tone variable setting section 11 is set to a predetermined state. At the same time, by turning on switch _S1 and emitting a tone, all functions of the transceiver can be set to be compatible with the repeater. Further, when the switch _S2 is turned off in the repeater compatible state, the transmitter/receiver is completely set to the original normal state based on the data stored in the arithmetic processing circuit 12.

Therefore, it is possible to switch between normal communication and communication using a repeater with a single switch, and there is no need to take the time to set up each part unlike in the conventional system.

According to the transmitter/receiver according to the present invention, the transmitter/receiver is compatible with a repeater and is equipped with an arithmetic processing circuit. In addition to controlling the settings and its sending function,
Since current data such as transmitting/receiving frequencies can be stored, all functions in the transmitter/receiver can be set to be compatible with the repeater by simply sending a signal indicating that the repeater is to be used to the above processing circuit. Repeaters can be used. Further, even when returning to normal communication, the state before switching can be completely set using the already stored data. Since it can switch quickly in this way, it is possible to perform propagation experiments by alternately switching between normal communication and repeater communication in amateur radio, making it ideal as a repeater compatible transceiver.

[Brief explanation of the drawing]

The drawing is a block diagram showing a transceiver according to the present invention. R: Receiving unit, 5: Local oscillator that determines the receiving frequency, T: Transmitting unit, 9: Local oscillator that determines the transmitting frequency, 10: Tone encoder as tone additional function, 11: Tone variable setting unit, 12: Arithmetic processing Circuit, _S1 : Switch, _S2 : Switch that should generate a signal to use the repeater.

Claims (1)

[Claims for Utility Model Registration] A transceiver equipped with a tone addition function for accessing a repeater and capable of offsetting a transmitting frequency with respect to a receiving frequency, the above transceiver is equipped with an arithmetic processing circuit, and the arithmetic processing circuit has a memory function that stores current data such as transmitting and receiving frequencies based on a signal indicating that the repeater is to be used, and a tone variable setting function that sets the tone frequency in the tone addition function. A transmitter/receiver comprising: a tone transmitting function for transmitting the tone set by the tone variable setting function; and a frequency setting function for setting transmitting and receiving frequencies to respective predetermined repeater frequencies.