I have done this in the past to deal with ladder line length on multi band use. cut the following lengths of ladder line.
1 foot 2 foot 4 foot 8 foot Solder alligator clips on all ends By using these in combinations, you now have the ability to increase your line length from 1-15 feet. Test SWR on the offending bands while adding increments of 1 foot at a time. The fact that you are finding the high SWR on both 20 and 40 could indicate a high impedance point at the input end in 1/4 wave increments. 15' will be an even 1/8 wave on 40 and an even 1/4 wave on 20. Adding some length of line might push this away from the input end on both bands. I will guess that 6' or 9' will be a good numbers to add. Duane -- bw...@fastmail.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
