(May 22, '04). I no longer sell the WARP13.
For people with older units operating at 4.0 MHz, I will continue to offer an upgrade PIC16F876 programmed with the current RX28 firmware version, a 20 MHz resonator and a small piece of solder wick to aid in removing the current 4.0 MHz resonator. The upgrade kit may be purchased from
I do not know how long I will offer this service.