| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $15.06 | $14.76 | $14.29 | $13.68 | Contact US |
30M Feeder K-480WLA 500K-1GHz MW/SW/FM/AIR/UVHF Full Band Antenna 0-30DB Adjustable Gain SDR Loop Shortwave Antenna
$117.43
25M Feeder K-480WLA 500K-1GHz MW/SW/FM/AIR/UVHF Full Band Antenna 0-30DB Adjustable Gain SDR Loop Shortwave Antenna
$114.01
Black MA-02 Portable End Feed Shortwave Antenna 1:64 Balun 20-Meter Feeder Antenna V1.0 7MHz/14MHz/21MHz/28MHz
$49.07
HA205 5V Automatic Polarity Switch Module High Quality Radio Accessory for Power Signal Polarity Switching
Function:
- When there is an uncertain power signal input, it will automatically switch to a power signal that determines polarity.
Module Interface Description:
P1 Input Interface:
- PA: positive or negative power signal input
- PB: positive or negative power signal input
P2 Output Interface:
- V+: positive polarity voltage of output power supply (positive power supply)
- V-: output power supply reverse polarity voltage (negative power supply)
Specification:
- Size: 35 x 22mm
Package Included:
- 1 x Polarity Switch Module
