Ham Radio KITS - TOP PAGE - Washington Island BOOKS

1/7/2008 : the LF Converter kit is temporarily out of stock

The board has been changed slightly and the coils are now prewound binocular cores so the kit will not look exactly like the picture.

LF Converter kit

[LF Converter circuit board picture - click for larger view of board ]

  • LF band (10 to 300 kHz) upconverted to HF
  • use with your HF ham radio OR shortwave receiver
  • all board mounted parts supplied
  • just add your metal case, connectors
  • price is $12 for basic kit (4 AND 10 MHz crystals, no printed documentation)
  • add $3 for postage/handling in USA
  • add $6 for postage/handling worldwide


    • Printed manuals available for an additional charge or save money by downloading (Right click/save target as) and printing the manual and schematic

    Print out the Kit order form to figure your order manually
    OR try our: javascript order form to let your browser do the math
    OR press one of the buttons below to pay with a credit card by using Paypal:


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    press the Add to cart button at the left to put an LF Converter kit in your Paypal shopping cart
    outside the USA ?, press the Add to cart button at the left once per order to add $3 DX shipping
    press the view cart button at the left to Check out or see what is now in your Paypal shopping cart

    For larger quantity purchases by Paypal, please email:

    jacksonharbor at att.net

    with the quantity desired and a Paypal invoice will be emailed back to you.

    Downloadable files for LF Converter

    The Acrobat files of complex diagrams (like the schematic) may not view well on your computer screen - suggestion: use the magnifier to zoom in for better detail or print out the file. (Right click any link below, then select "save target as" to save the file to your PC.)

    lfconv4m.pdf (16k) - an Acrobat file of the LF Converter manual

    lfconv4.pdf (69k) - an Acrobat file of the LF Converter schematic

    The following files were recorded with an Elecraft K2 on 40 meters fed by an LF Converter - recordings made 5/3/2002 in the early afternoon (1:45 to 2:15 PM) local time using a 70 foot wire antenna, 15 feet above ground, location: Washington Island, WI.

    24khzx.wav (39k) - a .WAV sound file of the 24 KHz Military station

    wwvbx.wav (61k) - a .WAV sound file of WWVB at 60 KHz

    loranx.wav (20k) - a .WAV sound file of Loran pulses at 100 KHz

    atx.wav (17k) - a .WAV sound file of the AT beacon at 228.87 KHz

    dgpsx.wav (33k) - a .WAV sound file of the Sturgeon Bay, WI DGPS stations at 321.9 KHz

    LF web links:

    K0LR - Lyle Kohler's terrific web site

    LWCA - Long Wave Club of America web site

    Ham Radio KITS - TOP PAGE - Washington Island BOOKS

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