Saw this 8 to 11 MHz band pass filter (item number: 201406314462) on eBay a few weeks ago and thought it might come in handy to help my SDR radios hear WWV and WWVB while not being overwhelmed by other signals.
Here’s what the 1 to 100 MHz band looks like using the PCR-1000 connected through the new antenna multicoupler, without the new filter. Remember, this antenna setup already has some significant attenuation below about 100 MHz since it’s using a VHF/UHF discone and the 10 to 2000 MHz LNA.
Here’s a plot using the ICOM PCR-1000 using the new BPF. Indeed, it has good performance, especially for the US$11.48 incl shipping.