A QRP SWR/Watt Meter Kit and an Add-on Audio Filter Kit

摘要

With springtime here, antenna work is on the minds of hams everywhere! Thus, here is a good kit to help with your spring antenna work. Plus, in keeping with this issue's QRP theme, it is designed specifically for use with low-power transmitters. The Four-State QRP Group has just released the 4SQRP QRPometer, designed by David Cripe, NM0S. This kit is useful for measuring low-power transmitter output accurately as well as reading the VSWR on your antenna system with digital precision. The QRPometer measures RF power output from 10 mw to 10 w in addition to SWR. The unique thing about this kit is that it provides a load for the low-power transmitter to be tested into, eliminating the need for a low-power dummy load when testing QRP transmitters. That load is eliminated when placed into the VSWR mode, allowing the RF to pass through to the antenna. This feature protects your low-power transmitters from high SWR damage during power measurement, as most kit transmitters have no VSWR protection for the finals. The meter can be left in line in the VSWR mode for normal use.