When I was wet behind the ears in the cb world I had bought a Connex 4800dxl but soon traded it for a galaxy 99. I didn't know any better or I'd still have it. I understand now that it was a clone to the 148gtl dx but don't know for sure.
Never actually owned one of these -- Hallicrafters CB-1. You can find specs and a picture of this on RigPix...It was around 1960. Las Vegas High School had received a federal grant to start up an electronics program which involved us high school students during the day and started "SNTI" (Southern Nevada Technical Institute) for older students. The new facilities included a CB radio station for Vegas High to communicate with the other high schools in the area. One day after school, we had an abbreviated antenna party. The teacher, Chris K7LBQ (SK), was on the roof. I was stationed at the controls of that ancient radio to announce "This is 11Q0082 testing" and then take a reading on the SWR meter. Based on what Chris was doing, I was telling him "longer" or "shorter" for the ONE channel we had a crystal for.
After 3 or 4 adjustments, I heard another station, quite clearly, saying "Eleven Cue Zero Zero Aight Two, I know you cawn't talk to me, since this is your new "Citizen's Band", but I thought you'd like to know you're putting in a good signal here in Johannesburg. This is Zed Ess Three Romeo Bravo, clear."
Las Vegas to Jo'burg South Africa (he had the South African accent as well!) is pretty close to an antipodal contact. I hollered up to Chris and told him not to make any adjustments. The rest of the class was passing news of the DX to Chris as he came down the ladder. First thing he asked was, "You didn't talk to him, did you?"
There was a strict limitation on DX in the 1960s for this new CB stuff. I told Chris that I'd really wanted to, but I had my ham license (Novice) and I knew the rules for CB as well.
But not bad for a Hy-Gain CB GP antenna. Sorry for the lengthy post...