HFDY Loop Wideband Active Small ic Loop HF Short Wave AM FM VHF For SDR Receiver Radio Tescun Malahiteam

Note : only for RX. can't TX References： 1、https://vaedrah.angire.com/.htm2、http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop- .htm3、https://air.com/youloop/4、https://www.g8jnj.net/moebius-loop-5、https://www.g8jnj.net/loop-inductance Description:  The small loop hfdloop is a small size full band ring ic field active receiving  To 500MHz, mainly composed of top jumper board and small ring amplifier board Feeder and 12V linear power supply, in which the top jumper board Switch, different functions can be realized by adjusting the position of the switch The Mobius loop can achieve twice the voltage gain of the ordinary small loop The electric field shielding ring can effectively reduce the interference caused by the electric field in the surrounding environment, such as lightning The structure of unshielded ring is simple, and the whole small ring can be repd by a thicker conductor Easy to erect. The installation and connection mode of flying fish version small loop is shown in the figure below , Small ring enlarged plate, Top jumper board Different junctions can be realized at different positions, in which Mobius ring can realize twice the voltage gain of ordinary small ring static electricity  Technical specifications:  Receiving frequency range: 50KHz to 500MHz Gain: 17dB@10MHz Output noise: - 125dbm @ 10MHz, BW = 100Hz P1dB：+15. 5dBm@10MHz OIP3：+ 38dBm@10MHz Supply voltage: 9V to 12V Power supply current: 130mA to 150mA  interface: SMA m Output interface: SMA f Small ring coaxial cable model: rg402 Loss of small ring coaxial cable: 0.145db/m Small loop diameter: 60cm Package size: 380x300x80mm  The small ring as a whole can be repd by a thicker wire, as shown in the figure below   

 

The small loop consists of a small loop amplifier, a feeder and a top

1 jumper board, 2 small loop s rg402 coaxial cable, 1 5m feeder, 1 1m feeder, 1 12V linear power supply and 2 celess adhesive hooks.

The amplification board in the flying fish version small loop adopts the low-noise amplification of the improved version lz1aq

The is from 50KHz to 500MHz, the gain is greater than 10dB, and has low

The input impedance 1.2 Ω @ 1MHz effectively reduces the electric field interference. 12V linear

Power supply, current not exceeding 150mA.

The specific test curve of the amplification board is shown in the figure below:

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