The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31 19 48  7 36 38 26  6 26  7  6 15 38 14 29 40 17 20
 0  0 35 21 42  7 14 21  7 42  0 35 28 14  7 35 28  0 42 28 35 21 14 42 14  0  7 21

generates a code of length 28 over Z49 who´s minimum homogenous weight is 159.

Homogenous weight enumerator: w(x)=1x^0+2100x^159+150x^161+882x^162+3150x^166+108x^168+5292x^169+5040x^173+36x^175+12x^182+30x^189+6x^196

The gray image is a code over GF(7) with n=196, k=5 and d=159.
This code was found by Heurico 1.16 in 66 seconds.