SDR MW Filter

Designed by John Futter ZL2J, this bandstop filter attenuates signals in the MW band 500kHz to 1.5MHz for locations that have very high levels from a nearby broadcast station. It is bandstop, not high pass so the VLF band is unaffected.

The circuit is covered in clear heatshrink for physical protection.

The MW filter is US$28 including free worldwide postage.

These will be posted in a letter envelope which normally takes 1-3 weeks to arrive but can sometimes take up to 4 weeks. The letter is untracked but we have been sending other items like recovery SD cards and USB to 5V cables this way for a year and all have arrived. 

The Post Office here doesn't require any customs declaration on stuff that fits in a standard letter envelope. We have never had any reports of customs problems or charges at the customer end.