Clean both sides of the blank PCB with paper towel and isopropyl alcohol or electronics flux remover, then solder the components to the board, starting with the lowest profile parts. Then solder the small capacitors, small transistors, followed by the larger capacitors.
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3.5-30MHz 70W HF RF Power Amplifier ShortWave SSB AM CW FM Linear Power Amplifier Kits FOR YAESU FT-817 KX3 Radio Station
Aliexpress UK
Clean up the solder flux residue from the board with isopropyl alcohol (or electronics flux remover) and a brush. Clean both sides of the blank PCB with paper towel and isopropyl alcohol or electronics flux remover, then solder the components to the board, starting with the lowest profile parts.
eBay
88-180Mhz 500W Linear RF POWER Amplifier Mrf300 LDMOS Diy Kit ( NO MOS Tube) HF VHF UHF CW SSB FT8 RTTY EME FM Ham Radio
Aliexpress UK
The module supports OPPO UDP-203 multi-channel output. Using 4MM aluminum plate, can provide firm installation and sufficient heat dissipation. Series regulator design. A low-pass filter (with a corner frequency of 1.6Hz) prevents zener noise from being introduced into the error amplifier.
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70-200MHZ 45W FM VHF RF Power Amplifier KITS 45W ClassAB Linear Amplifiers FOR HAM Radio Transceiver Transmitter Walkie-talkie
Aliexpress UK
Use PMOS LDO architecture. High-current MOSFET pass transistors. Use Schottky Barrier Rectifier. support 10A continuous current, 13A maximum. The low-pass filter also provides a soft-start characteristic.
eBay
45W 70W SSB Linear HF Power Amplifier 3.5-30Mhz DIY Kits For YAESU FT-817 KX3 SMD Part Soldered Radio Transceiver Speaker Module
Aliexpress UK
This is DIY KIT (contain the display board ),you need to solder it by yourself,if you want the assembled need ADD 3USD. Phoenix radiator, USA BI adjustable resistance, Germany WINA, Japan ELNA-AUDIO, double-sided PCB.
eBay
88-180Mhz 500W RF POWER Amplifier Mrf300 LDMOS Diy Kit ( NO MOS Tube) Linear Amplifier VHF CW SSB FT8 RTTY EME FM Ham Radio
Aliexpress UK
Support 13A continuous current, 16A maximum. Use Schottky Barrier Rectifier. PCB Size: 121X221X1.6mm 1oz Cu, HASL with lead. 6 PCS Capacitor Array. A low-pass filter (with a corner frequency of 1.6Hz) prevents zener noise from being introduced into the error amplifier.
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DC Power Adapter Kits Universal 5.5 mm x 2.1 mm DC AC Power Adapter Tips Connector For Lenovo Laptop Power Supply Plug Jack Se
Aliexpress UK
Clean up the solder flux residue from the board with isopropyl alcohol (or electronics flux remover) and a brush. Clean both sides of the blank PCB with paper towel and isopropyl alcohol or electronics flux remover, then solder the components to the board, starting with the lowest profile parts.
eBay
In Stock ToolkitRC M6D 15A x 2 DC Dual-channel Output 1-6s Charger Discharger and ADP100 100w 20v 5A Power Supply Unit Set Sell
Aliexpress UK
OPPO Upgrade KIT Project. This module does not support OPPO UDP-203 multi-channel output. Using 4MM aluminum plate, can provide firm installation and sufficient heat dissipation. After upgrading this module, multi-channel function will be disabled.
eBay
500W 12V Solar Panel, 100A Controller, Photovoltaic Mobile Power Supply Kit for Home/Camping/RV/Car Fast Battery Charger
Aliexpress UK