Description:  K-180WLA is upgraded again . The 10-meter long feeder is upgraded to LMR100 96 braided pure copper dense mesh plus aluminum platinum double-shielded feeder (the highest specification of this type of feeder), which has better shielding effect and lower loss. The 10-meter feeder is SMA male Replace the head with an anti-return needle. The latest version of the preamplifier adds the FMDX HF switch to adjust the FM band gain (the FM strong signal area reduces the FM band gain and increases the HF band gain).  The default feeder length is 10 meters. If you need to customize feeders of other lengths, you can leave a message or to change the price and then pay K-180WLA (upgraded and improved version) has higher receiving dynamics and signal-to-noise ratio, can withstand -10DBM signal strength is not saturated, the latest version adds FMDX HF switch to adjust FM band gain (for FM strong signal area to reduce gain, prevent receiver overload and boost HF band gain).     Unified answers to questions about antenna concentration:  Can K-180WLA be installed indoors?  Answer: The K-180WLA itself is designed to be an outdoor antenna front box with a fully waterproof structure, which can be used for long-term outdoor erection. It can be erected and used indoors, of course, but indoors are blocked by buildings and various indoor interferences. This is indoor use Reason for poor reception. So if you have the conditions, try to erect it outdoors, but if you don't have the conditions, you should also stick out near the window or the window.  Can K-180WLA be used in both medium wave and short wave FM bands?  Answer: The K-180WLA preamplifier gain is about 20DB, and the operating frequency of the guaranteed index is 0.1-180MHZ, which completely covers the medium-wave short-wave and FM bands. But as you can see in the reviews, some people say that the medium wave works well, some people say that the shortwave and FM bands are good, some people say that all the bands work, this is because the external antenna ports of different radios are not full-band, and also That is, most radios do not have a medium wave external antenna port. Of course, such radios are ineffective, but most radio external antenna ports support shortwave and FM bands.  Which radios are available?  Answer: As long as the radio with an external low-impedance port can be used, the effect of different radios with the same antenna is different, because of the difference caused by different radio performance (remember that radios without external antenna ports cannot be used ).  Can some stations be received?  A: We can only guarantee that the quality of the antenna and the indicators cannot guarantee that certain stations you want to receive will be received, especially for short waves, the propagation characteristics of the ionospheric reflection and propagation at different times and seasons and different frequencies are different.  Are the antennas of the latest version, and what is the difference with the old version?  Answer: The current version is the latest improved version. The new version has added protection devices on the ports and optimized the circuit. Static and radio terminals are not easy to damage the preamplifier due to misconnection, and the preamplifier has added FMDX and HF switches. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.