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Don,
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It would seem Hallicrafters was slow in adopting solid state design for their higher end communications receivers, up to and including the SX-133 radio. They did, as you pointed out, make a SS version of the S-120 (S-120A) but this was actually made for them by a Japanese manufacturer (Trio?). The earliest, all SS communications receiver I know of is the Hammarlund HQ-215, which used Collins mechanical filters. It was very expensive and don't think it sold well as a result. I had one briefly, but wasn't too impressed with it compared to more modern receivers. Drake hung in there through the early 80's and made several all SS receivers (eg. R7, SW-4/8 line, etc) which were excellent albeit expensive. All the US comm. receiver manufacturers folded up their tents not long after that but it would have been interesting if they had hung in there and developed more all SS communications models. Sadly, we'll never know what could have been.
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Bob K3AC
In a message dated 10/13/2022 5:53:59 PM Eastern Standard Time, drootofallevil@... writes: ?
Bob thanks for your quick reply From my recollection , I generally agree with this ?comment, and all but the one small point in the previous comment. ?? As the topic has morphed a bit, it ?seems to me, Transistors were a great fad, and very good for portable BCB/AM use, but? were lacking for some time in power , frequency and audio ¡°fidelity¡±. So one would expect communication receivers to lag behind table radios in use of transistors. The transistor was not taken seriously by many of us for some time. ? As to a slightly different point, the S-120 was a tube receiver [presumably made in USA], but the S-120A version was all solid state, and made in Japan.. according to Dachis. I don¡¯t think I have a transistorized Halli ; I wonder if the ¡°chassis¡± on early transistor units ?was partly circuit board. ? Regarding some of the comments re the sx-101 styling, seems to me ¡°my¡± S-47 was the first slide rule dial used by Hallicrafters. When it comes to style ,the SX-115 seems very unique. So many aspects of these radios to think about. ??? Don VA3DRL ? From: [email protected] [mailto:[email protected]] On Behalf Of Robert Needleman via groups.io
Sent: Thursday, October 13, 2022 4:24 PM To: [email protected]; [email protected] Subject: [HallicraftersRadios] SX-110 History ? Don - you are correct. First transistor was invented by Shockley, et all at Bell Labs, NJ,? in 1947. My intention was to convey that the dissemination/utlization of transistors? into consumer products (eg. comm. receivers) did not really occur significantly until the mid-late 50's. Hallicrafters and the other major US receiver manufactuers? were still relying primarily on hollow state design but eventually began developing solid state circuits for use in their receivers starting around this time, into the 60s/70s..? ? Bob K3AC
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