The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  1  1  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  7 14  1  1  1  1 28  1  1  1  1  1  1 21  1  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1  1  1
 0  1  1 31 16 48  4 19  0 36 31 16 48  4 19  1 19 16 48 36  4  1  0 31 36 26 38  7  6 46 29  9 38  7  9  6 43  1  1 27 21  9 43  1 40  8 23 28 44 30  1 29 29  2 46 29 24 23 14 45 17 36 37 26  1  8  2 38 45
 0  0 35  0 35  7 35  7 42 14  7 42  0  0 42 14 21 28 14 21 42 14 21  0 14 42 35 28 21 14  7 28 14 14 21 21 42 35 42  7 35 21 28  7 28 14  7 28  7 35  0 42 28 28  7 42 28  0 21  7 35 42 14  7  7  7  0  0 28
 0  0  0  7 28 28 21 42  0 42  7 42 35 28 21 21 42 21 35 35 14  0 42 14  7 35 35 28 28 21 14  0 21 14  7  0 42 42 28  0  7 21  0 35 14 14 28 21  7 21 35 21  7 35 14 14  7  7 28  0 28  0 28 21 28  7 42 42 21

generates a code of length 69 over Z49 who´s minimum homogenous weight is 392.

Homogenous weight enumerator: w(x)=1x^0+648x^392+294x^394+630x^396+420x^398+5664x^399+3108x^401+2016x^403+1680x^405+8904x^406+5376x^408+3402x^410+5670x^412+19716x^413+11676x^415+5208x^417+6636x^419+20592x^420+8358x^422+3150x^424+4014x^427+162x^434+126x^441+90x^448+42x^455+36x^462+24x^469+6x^476

The gray image is a code over GF(7) with n=483, k=6 and d=392.
This code was found by Heurico 1.16 in 6.38 seconds.