HI, RS discones are contracted out of China,,no Diamond does not build radio shacks antenna for them, I spoke with a gentleman , named Wayne from diamond ant. about 2 yrs. ago about that, But diamond does make the Icom ah-7000 discone.,,except for the included coax, your really paying more for the name, not to knock icom whatsoever, Because Diamond has the N-connector version on the market the past couple yrs. again,,I have the D 130 NJ, Great antenna, well built !!.....PS I did read a few yrs back that Diamond Ant. and Comet have some Ant parts built for them from the same manufacturer in Japan, although the two are not affiliated with each other.