PACKBOX 1.8Mhz-50Mhz HF SDR Transceiver Switch Antenna Sharer Sharing Device QSK TX/RX Power Switch Box With Protection Circuit

The biggest feature of the fourth generation antenna sharer is the addition of a protection circuit to ensure that the equipment will not be burned or damaged when the user forgets to connect the radio T / r cable. At the same time, the working frequency of the fourth generation antenna sharer is extended to all short wave bands and supports all amateur radio bands of 1.8mhz-50mhz. According to the opinions of fans and uses before, we have improved the design and added a fan delay circuit. The fan will stop automatically 15 seconds after stopping transmission.

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Contact Person: Ms Sandy
Tel: +86 137 1424 2013
Email: 6475166(at)qq.com
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The equipment is specially developed for SDR equipment, which can make SDR and high-power short wave transmitter share one antenna, so as to ensure that the SDR will not be burned while the short wave transmitter transmits signals within 100W, and ensure that the short wave transmitter and SDR equipment are applicable to the same short wave antenna to receive short wave signals at the same time.

This device is called "game artifact" by ham amateurs, which can improve the performance of CW and SSB communication competition with the cooperation of this device. At the same time, SDR can receive signals of different frequency bands simultaneously with short wave transmitter to avoid missing rare radio signals.

Because our products use the real pin short wave RF special switch tube, the T / RX switching speed is very fast. While the HF transmitter transmits, the SDR equipment can scan the spectrum in other bands (with the cooperation of relevant software

This product is suitable for Taiwan friends with SDR. Its working frequency is 6m-160m band (1.8mhz-52mhz). It adopts professional pin ceramic diode. It is upgraded and packaged with the highest specification to ensure the heat dissipation area. At the same time, it has added a heat dissipation fan delay circuit. After stopping the launch for 15 seconds, the fan will stop automatically to reduce the noise and protect the equipment from damage. The switching time is theoretically less than 100US (microseconds). The absolute output of SDR terminal shall not exceed - 10dBm. At 40m, the insertion loss shall be less than 0.3, the isolation shall be 55dB, the standing wave shall be less than 1.4 (6m), and other bands shall be less than 1.2

Size: 130x10x35mm

Use 13.8V power supply, which is convenient to be compatible with radio power supply. The product uses an ultra silent fan to provide heat dissipation for high-power pin ceramic diodes. The built-in PTT in and out interfaces can link the short wave transmitter with the power amplifier through the device (idea: the power amplifier and Tiandiao should be at the back end of the device)

In the product and internal PCB details, you can see that the pin diode is upgraded to a professional in-line package, which is the model and package used by ICOM, yeasu and other professional high-end short wave radios and high-end power amplifier manufacturers. At the same time, in order to ensure high Q value, we upgraded the coil to a honeycomb coil, and added a special low-voltage limiting bulb, There is no need to worry about returning the equipment to the factory for repair. The limiting protection bulb is block design and can be replaced by itself

The following are the actual tests:

3.5MHz transmission, actual test value of output power at SDR output end of antenna sharer.

1.8mhz transmission, actual test value of output power of SDR output terminal of antenna sharer.

50MHz transmission, actual test value of output power of SDR output terminal of antenna sharer.

7.05mhz transmission, actual test value of output power of SDR output terminal of antenna sharer.

After K3 transmission state links the power meter and 500W dummy load, the power meter displays the actual power.

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K3 120W full power launch, SDR receiving end of T / R switch does not exceed 0dbm, measured as -4.8dbm, at 14mhz..

K3 120W full power emission, SDR receiving end of T / R switch does not exceed 0dbm, measured as -3.5dbm, at 28MHz