Most RF or antenna suppliers will sell coaxial cable cut to size and with with your choice of connection type. We recommend LMR400 cable, which is durable and low-loss. However, due to its stiffness, we also recommend a 30 cm (12-inch) jumper cable made of a lighter grade material (e.g.; LMR-240) as strain relief for connectin between the LMR-400 cable and the FUNcube dongle. Alternatively, you may use bulkheads for strain relief.