5802 Miller Valley Drive
Houston, TX 77066

ph: 281 467-9424
fax: 214 242-5080

HF Packer-Amp

Welcome to the 3rd Generation HF Packer-Amp Home Construction Project.

 

This is version 3 of the popular HF Packer-Amp. Significant changes to improve construction have been incorporated in this revision. We went through and revised the artworks for the HF Packer-Amp. The changes are primarily to fix part foot prints and to improve the silk screen lettering. The changes are compatible with the existing HF Packer-Amp. The goal was to improve assembly.

Rev 2 Amplifier board

  • Improved Silkscreen and circuit board routing
  • Now using a 3rd generation design relay used in the SuperPacker Pro
  • Added a jack for an external switch to change the T/R hold time for CW or SSB (optional - add user supplied toggle switch and wires mounted on the rear panel).
  • Added 25-turn pots to set the bias current. This change removes the sensitivity of a 1-turn pot.

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PSU Rev 3 board

  • Improved Silkscreen and circuit board routing
  • Added 5V local regulator so the PSU may be tested without being attached to the amp board.
  • Changed spacing on 1uH inductor
  • Improved routing to eliminate potential shorts to standoffs.
  • 3-pin Header now the proper length (no modification required).

 

 

 

 

 

 

 

 

 

 

 

 

 


 

LowPass Filter board

  • Improved Silkscreen and circuit board routing
  • Increased size slightly and improved part placement
  • Corrected parts spacing and better placement identification

 



 


 

 


 

    I would like to let you know that your HF Packer Amp performed beautifully for me today.
    I was on the 17 meter this afternoon and the band condx wasn't particularly good. I heard a single JA calling CQ. He didn't hear me with my  2.5 watts QRP with an MP-1 antenna, but when I turned on the amp he immediately came back and gave me 57 and we were able to sustain a QSO. I turned the amp off during the QSO and he couldn't hear me until I turned it back on again. The amp clearly proved its worth and performed exactly the way I wanted it to.
    Many, many thanks for all your help. You certainly made me a happy man.
    Hiroki, AH6CY

    Buy Now

    HF Packer-Amp

    • 160-10 Meters; Filters
    • 35W average typical output
    • 5.1x3x3.3 inch; ¼ lb
    • 12VDC; 6mA standby
    • RF Sensing; 2.5W In
    • SSB, CW, PSK
    • Spurious –40dB
    • Harmonics –45dB
    • 2:1 Load Tolerance
    • Medium Skill Level

     

     

     

                 

    Case

    ·         Restructured layout to provide a section for each module and a final assembly steps with more photos.

     

    Get in on the HF (Having Fun) Projects experience with this 3rd generation. Happy Building!

    Virgil - K5OOR

     

    5802 Miller Valley Drive
    Houston, TX 77066

    ph: 281 467-9424
    fax: 214 242-5080