In production

【2024/10/4】 　Since I missed the timing to make a printed circuit board, I will make one using a Janome board. The parts to be attached to the display panel unit are complete, and the AF amplifier will use the AF amplifier unit I made in the radio construction series. 　　　 he rest will make up the main unit. 　Previously, we created a control device (Control-BOX) for switching between two exciter transmitters and a linear amplifier, but it only switched the transmitters and did not have a receiver switching function. The receiver was always able to receive four units through an active 4-way distributor, but the SP/HP had to be switched to the required device, and it was also difficult to switch all the transmitters and receivers synchronously, so this time we created a new Control-BOX-New that allows independent switching of transmitters/receivers for up to four units. 【Shortcomings of the current Control-BOX】 　①　Only two transmitters can be switched. 　②　I can't switch receivers. 　③　Many places use relays for switching. 【Features of Conrol-BOX-New】 　①　All switching except for RF signal switching is electronic. 　②　It is possible to independently switch between four transmitters and four receivers. 　③　The receiver has a built-in common final amplifier, so there is no need to switch between HP and SP. 　④　The control signals/transceive signals required between the transmitter and receiver are also switched synchronously. 　⑤　The status of the linear amplifier can be checked and active ON/OFF can be controlled from within this box. 　⑥　Supports remote control control. 　⑦　The proper nouns of each device can be registered and are easy to understand on the LCD display. 【overview】 　Basically, this is a device that allows instant switching with one action while a previously self-built transmitter/receiver is in operation. Until now, two transmitters could be switched in one go, but the receiver required switching between the speaker line and headphone jack. This time, the receiver has also been made to switch the receiver itself while leaving the SP/HP unchanged. In addition, the control signals required between the transmitter/receiver can also be switched synchronously with one go. It switches between four transmitters and receivers, and the names of each of the four devices (proper nouns) can be registered, and TX1 to TX4 and RX1 to RX4 are registered and operated as shown below. 　　　TX1＝TX-URANUS、TX2＝TX-SATURN、TX3＝TX-NEPTUNE、TX4＝TX-PLUTO 　　　RX1＝RX-URANUS、RX2=RX-SATURN、RX3＝RX-NEPTUNE、RX4＝RX-JRC535 The display makes it possible to immediately identify the specific device that is being switched on. Image of the remote control that remotely controls this unit. 　　　　　　　　　　　　　　　 　　　Current block diagram and circuit diagram　　　　　　Block Diagram　　　Circuit diagram 220818 Image of the front panel 　 Image of the back panel