effective choke baluns
it's form the <arrl handbook for radio amateurs>
1)single band(very effectiv)
freq mhz rg213/rg-8 rg-58
3.5 22ft,8turns 20ft,6-8tunrs
7 22ft,10turns 15ft,6turns
10 12ft,10turns 10ft,7turns
14 10ft,4turns 8ft,8turns
21 8ft,6-8turns 6ft,8turns
28 6ft,6-8turns 4ft,6-8turns
2)multi;le band
freq mhz rg8/58/59/8x/213
3.5-30 10ft,7turns
3.5-10 18ft,9-10turns
14-30 8ft,6-7turns
