-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Ever see how small an SM50 is? The whole chassis is a heat sink. Have you ever see WB6NIL "DUDE"'s briefcase portable repeater? That thing works pretty well. You could do the same with the SM50 set the output to 5W, and use a small roll up j-pole or even a magmount. Use an Atom based 12v motherboard or even an old laptop. The radio could be easily powered by a small 12v supply. It would all fit in one of those aluminum tool box briefcases you can get a harbor freight for cheap. Anyway good luck with your project, it's is exactly what ham radio is about. Experimenting and making stuff do things it was never designed to do! Don W9DRR -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iF4EAREIAAYFAlK91QoACgkQ37LPaQ6hzZrUKwEA0Ne6JWDZqVa1EbsHFxOZsh/X ptXIRlMSHWKvHKkgsvcBAMXkPU3Ey1ncHo6d4axpEow4sRlxRWsZl0SL10dTFDDI =PlBn -----END PGP SIGNATURE-----