kanali.txt

24 Вести
Македонски
479.25
C22
Alsat M
Регионален
751.25
C56

out.txt

{24 Вести} 479.25 0 {0} 0
{Alsat M} 751.25 0 {0} 0

parser.py

#!/usr/bin/python
lines = open('kanali.txt').readlines()
out   = open('out.txt', 'w')

while True:
    chunk, lines = lines[:4], lines[4:]
    if not chunk:
        break
    name, _, freq, _ = chunk
    out.write('{%s} %s 0 {0} 0\n' % (name.strip(), freq.strip()))

out.close()