Sotabeam's WSPRLite SB is said to be capable of 630m operation with one of the more recent firmware updates.
I confirmed that by upgrading to the latest firmware. Problem is that like some of the other bands, an external
low pass filter is required. I searched and searched the internet for a 630m low pass filter suitable to use
on the WSPRLite, however failed to locate one. Does anyone know where one might be available? Is anyone known
to be using a WSPRLite on 630m? If so, I would like to contact them to exchange notes. Thanks.

Best regards,

Gary, K7EK - EM77at