Seems so. From the transverter manual
"The roofing filter will attenuate signal and noise outside the 630m band." Too bad it can't also be used as a general longwave receive converter including 2200 meters, maybe WWVB and more. But longwave, especially in urban areas, can be a nasty neighborhood.
Also
"In receive, signals from the MF Antenna pass through the SWR Bridge and 7 pole, Chebychev, 500 kHz, low pass
filter. This filter provides 30 to 50 dB of attenuation against Broadcast Stations operating in the 550 to 1600 kHz
Medium Wave Band. This filter is followed by a half lattice, roofing filter. The pass band is 472 to 479 kHz. The filter
is steep sided, but flat within +/- 1.5 dB within the pass band. The ceramic elements resonate at 473.3 and 478.2
kHz. The roofing filter is followed by a 5 pole chebychev low pass filter."
Great that it includes an SWR bridge. There is mention of a dual band version down the road.