Active Magnetic Loop Antenna HA SDR Short Wave Radio Loop Antenna Low Noise Adjustable Gain Ant 100kHz-30MHz better than MLA-30

NOTE：

Recently, some AliExpress merchants copied our antenna for sale, please pay attention to distinguish the authenticity. Knowledge is priceless, please choose to buy genuine, thank you.

Why AMLA150 antenna is better than MLA30?

The MLA30 antenna will have noise near 10MHz and 20MHz, because it uses ordinary power or mobile power supply (mobile power has a boost function that will affect the antenna reception)，There is another disadvantage. MLA30 uses a feeder to power the external antenna, which will further affect the receiving effect and reduce the receiving performance. The solution used by AMLA150 antenna is different from that of MLA30. We use a professional receiving chip with excellent reception. Radio enthusiasts are welcome to buy it for evaluation and comparison with other types of antennas.

AMLA150 antenna reception effect video: https://youtu.be/c2GOiL2MSPc

Order guidance:

At present, this shortwave active loop antenna with the highest cost performance, you can buy it to test and compare with other antennas. If you are not satisfied with this antenna, please give one star or return it.

Recently there have been customer reviews, signal overload, and the use of faults pay attention to the following points:

1. Keep away from strong interference sources such as electric vehicle chargers. 2. Use 8.5V or 9V dry batteries or rechargeable batteries, or rechargeable batteries used by 6LR61 6F22. 3. When using, make sure that the rechargeable battery has enough power, because the battery will affect the receiving effect during charging. 4. Put the antenna as close as possible to the window or outdoor, the reception effect is better. 5. The gain is adjusted to about 70%, and the receiving effect is the best. 6. From the structure of the circuit board, we can see that the purpose of using the least electronic components is to achieve the best receiving effect. The more electronic components, the more interference sources.

The new upgrade adopts immersion gold circuit board to improve the effect.

Order guidance:

Type 1：

1. Empty PCB. 2. Electronic components. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 2：

1. A finished board. 2. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 3：

1. Finished board x 1 (without battery). 2. 3.5MM male to SMA male(6 meters) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 4:

1. Finished board x 1 (without battery). 2. SMA-J male to BNC-J male (6 meters) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 5:

1. Finished board x 1 (without battery). 2. SMA-J male to SMA-J male (6 meters) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 6:

1. Finished board x 1 (with 8.4V rechargeable lithium battery). 2. 3.5MM male to SMA male (6m) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 7:

1. Finished board x 1 (with 8.4V rechargeable lithium battery). 2. SMA-J male to BNC-J male (6 meters) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Type 8:

1. Finished board x 1 (with 8.4V rechargeable lithium battery). 2. SMA-J male to SMA-J male (6 meters) x 1. 3. Loop antenna x 1. (304 steel wire, steel wire Φ1.5mm, loop vibrator Φ60cm)

Upgraded version (antenna box can be hung outdoors)

Frequently Asked Questions:

1. Is Desheng PL365 applicable? ----------------- Not applicable, do not recognize the interface 2. 9V battery input (batteries used by 6LR61 6F22) Is the battery really dead? ----------- If the light doesn't light up, there is no electricity 3. Do I need to cut the nylon cable ties for battery replacement? --------- No, just slide it out from the bottom 4. What frequency band to cover?---------short wave is best, medium wave and FM are second place. 5. What is the use of the indicator light? ------ Power indication, if a lamp is damaged and not bright, it will affect the antenna work 6. Does the indicator consume power? ----------- not 7. What interface is the antenna? --------- SMA female seat, outer screw inner hole 8. Output impedance? ------- 50 ohms 9. Gain adjustment range? --------- Voltage gain 20 ~ 52dB (voltage magnification 10-400 times) 10. Gain adjustment potentiometer specification-2K 11. Power supply voltage range? ------------- 6V to 15V, DC. Note: Do not reverse the polarity of the power supply, otherwise it will burn the chip. 12. Can I use the power adapter to supply power? --------------- No, the switching power supply has interference 13. Can I use the power bank for power supply? ------------- No, the charging treasure has boost interference 14. Is this antenna lightning proof? ------------ No lightning protection