K1EL
VLF-B User Manual
VLF - B
Specifications
Input Frequencies
10 to 500 KHz
Output Frequencies
4.010 to 4500 Khz
Sensitivity
1 to 5 uV typical
Input Impedance
50 ohms
Output impedance
50 ohms
Power Requirements
9 to 13.5 VDC at 20 mA typical
Dimensions
3.5” W by 5” D (including switch and connectors) by 1.6” H
Net weight
10 oz
Product Warranty, Support, and Liability
VLF B is fully warranted to the original purchaser against defects in materials and workmanship
for one year after purchase. This warranty does not cover damage caused by accident, improper
care, or lightning damage. Please contact us before returning your VLF B for repair and we will
issue an RMA.
Please submit support questions by e-mail to
While every effort has been made to insure that the VLF B design is safe and the
documentation is clear and accurate, it is still possible to cause equipment damage or
incur personal injury if:
VLF B is not used as intended, VLF B is connected incorrectly, Safety guidelines outlined
in this document are not followed, or VLF B is modified in any way.
K1EL cannot be held responsible in these or other similar events.
VLF B
contains no user serviceable components or configurable jumpers. Please do not tamper
with or modify the circuitry of
VLF B
as this will void its warranty and may result in unsafe
operating conditions.
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VLF-B User Manual
11/30/2023 Rev 1.0
Page 5
