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I’ll do as you say. I will try the LMR-400 but it’s from DX Engineering, which has a velocity factor of 84%, which gives me 15.1851’ x 4 = 60.74’  = 60’ + 9” . 


I would like to know how this cables from DX Engineering compare to the real deal, the Times Microwave LMR-400.


Please, correct me if I am wrong.


I used this page to calculate length :


https://www.qsl.net/w4sat/velfact.htm