[Elecraft] RG58U vs RG58A/U

[Geoffrey Mackenzie-Kennedy]

Hi Brett,

Certainly there are differences between RG58U and RG58A/U, but if the three 
50ft lengths you have are quite old I would suggest that the best way to 
decide which piece(s) to use would be to measure the insertion loss of each 
50ft length at the frequency to be used, using a 50 +j0 load.

73,
Geoff
GM4ESD


Brett Howard wrote on Sunday, March 21, 2010 at 6:23 AM:

<snip>

> Anyway is there any reason not to use the RG58A/U or a compelling reason
> to use the RG58U over the RG58A/U?  I know I really should use something
> other than RG58 if I'm going to be going any farther than the length of
> run that would be needed for a mobile.  However at the moment the
> repeaters that I'm looking to be able to get into with this antenna I
> can hit with 5 watts (and the antenna in the same room with me).  Its a
> just shy of 10 foot tall antenna in a room with 8 foot ceilings so its
> not exactly "vertically polarized" either... ;)