10W HF Linear PA

10W HF Linear PA
10W HF Linear PA 10W HF Linear PA 10W HF Linear PA 10W HF Linear PA 10W HF Linear PA 10W HF Linear PA 10W HF Linear PA
Product Code: Linear
Availability: 591
Price: $26.00
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10W HF Linear Power Amplifier. Comfortably produces 10W from 12V supply. Compact design with huge heatsink included, which will not overheat even on continuous 100% duty-cycle operation. 26dB gain with +/- 1dB gain flatness from 2 to 30MHz.

This 10W HF Linear Power Amplifier kit has no Surface Mount Components (SMD) to solder. There are a number of small transformers to be wound, and assembly requires care and patience.

The push-pull driver stage uses two BS170 transistors in the amplifier design used in the SoftRock transmitter stage. The final uses two IRF510 transistors in push-pull. Yes, this humble low-cost MOSFET really is capable of excellent performance all the way up to 10m band and beyond! Short lead-lengths and PCB layout are extremely important, they are the key to success. 

Features:

  • 10W output from 2 to 30MHz, using 12V Supply
  • Generously-sized heatsink, will not overheat even on continuous 100% duty-cycle modes
  • 2-stage amplifier provides 26dB of gain
  • Push-pull driver and push-pull finals, for high linearity and low harmonic content
  • +/- 1dB gain flatness from 2 to 30MHz
  • 4dB down at 6m (50MHz) and 8dB down on 4m (70MHz)
  • Standard 50-ohm output
  • Through-hole plated PCB, all through-hole components (no Surface Mount Devices)
  • Standard inexpensive components throughout
  • Tested for 1 hour at full-power 10W, 100% continuous duty-cycle with no forced air cooling
  • Tested for 15 minutes at 20W, 100% continuous duty-cycle with no forced air cooling
  • Tested at 20V supply
  • Tested into open load, shorted load and various mismatches without instability (oscillation)

Hard-copy assembly instructions are not included in the kit. You need to download the assembly and operating instructions manual from http://qrp-labs.com/linear 

NOTE: Any Linear should always be followed by suitable Low Pass Filtering

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