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#1
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#2
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On Wed, 25 Sep 2013, George Cornelius wrote:
wrote: On Thursday, July 31, 2003 12:49:38 PM UTC-4, Judah Smith wrote: THE REVIEW OF THE AGES FOR THE DX-160 - [...] Great revues! Lay-mans words that a layman can understand!!! That would be a ten year old article. I always liked the review from Popular Electronics that Radio Shack reprinted in some ads (maybe it was for the DX-150), about how great reception on the highest band was, I think they even said "great image rejection". No wonder Radio Shack reprinted the review. IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. I always liked the look of the Ameco R5, especially since it had an extra band that went from 30 to 54MHz, just the SP-600. But that had to be an even worse receiver than the DX-160 and the like, precisely because of that added band. I can't really imagine it was very useful, stability wise or image rejection wise. But boy, all of those things looked so good back then, a world beyond me because I didn't have the money. That pocket Grundig radio, the Mini Traveller or something, that I got at a garage sale a few years ago for 2.00 can't be worse than those 40 year old solid state analog receivers. And yet, it is in some ways so much better. It has an LCD frequency counter on board, so you actually know what frequency you are tuned to. And then to make tuning easier, the limited tuning speactrum is broken down into smaller segments. TO offset that, the thumbwheel tuning doesnt' make it so easy to tune the receiver. I paid around $80 Canadian for that Hallicrafters S-120A in the summer of 1971, clearing out my accumulated birthday and Christmas money, and it was junk. But you can buy a number of recent shortwave portables for the same price, or somewhat higher, that are nearly infinitely better than that Hallicrafters. Better readout because it's digital. Better tuning beause it's not got a sliderule dial with backlash. Better image rejection because it converts up to a high IF, then down to a lower frequency. Better selectivty because it uses ceramic filters rather than just IF transformers. And pretty good SSB reception, because they have actual product detectors. That Hallcrafters never worked on SSB, too low a BFO level, until I used a potentiometer between the antenna terminals and the antenna, so I could attenuate the signals. And by the time the incoming signal was weak enough so the BFO would be strong enough, virtually no signals were receivable. I am surprised I've never seen any DX-160s or that level of receiver at garage or rummage sales. LIke I said a while ago I was really surprised to find a TMC GPR-90 at a garage sale, and only $20. I sure wouldn't spend more than that on a DX-160 or the like. Michael |
#3
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On Thursday, September 26, 2013 1:03:17 AM UTC-4, Michael Black wrote:
On Wed, 25 Sep 2013, George Cornelius wrote: wrote: On Thursday, July 31, 2003 12:49:38 PM UTC-4, Judah Smith wrote: THE REVIEW OF THE AGES FOR THE DX-160 - [...] Great revues! Lay-mans words that a layman can understand!!! That would be a ten year old article. I always liked the review from Popular Electronics that Radio Shack reprinted in some ads (maybe it was for the DX-150), about how great reception on the highest band was, I think they even said "great image rejection". No wonder Radio Shack reprinted the review. IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. I always liked the look of the Ameco R5, especially since it had an extra band that went from 30 to 54MHz, just the SP-600. But that had to be an even worse receiver than the DX-160 and the like, precisely because of that added band. I can't really imagine it was very useful, stability wise or image rejection wise. But boy, all of those things looked so good back then, a world beyond me because I didn't have the money. That pocket Grundig radio, the Mini Traveller or something, that I got at a garage sale a few years ago for 2.00 can't be worse than those 40 year old solid state analog receivers. And yet, it is in some ways so much better. It has an LCD frequency counter on board, so you actually know what frequency you are tuned to. And then to make tuning easier, the limited tuning speactrum is broken down into smaller segments. TO offset that, the thumbwheel tuning doesnt' make it so easy to tune the receiver. I paid around $80 Canadian for that Hallicrafters S-120A in the summer of 1971, clearing out my accumulated birthday and Christmas money, and it was junk. But you can buy a number of recent shortwave portables for the same price, or somewhat higher, that are nearly infinitely better than that Hallicrafters. Better readout because it's digital. Better tuning beause it's not got a sliderule dial with backlash. Better image rejection because it converts up to a high IF, then down to a lower frequency. Better selectivty because it uses ceramic filters rather than just IF transformers. And pretty good SSB reception, because they have actual product detectors. That Hallcrafters never worked on SSB, too low a BFO level, until I used a potentiometer between the antenna terminals and the antenna, so I could attenuate the signals. And by the time the incoming signal was weak enough so the BFO would be strong enough, virtually no signals were receivable. I am surprised I've never seen any DX-160s or that level of receiver at garage or rummage sales. LIke I said a while ago I was really surprised to find a TMC GPR-90 at a garage sale, and only $20. I sure wouldn't spend more than that on a DX-160 or the like. Michael Did you go back to that place just to see if they have more of the good stuff? |
#4
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On 9/26/13 24:03 , Michael Black wrote:
IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. DX-160 was made by the late GRE, of Japan. OEM manufacturer for a number of companies. So, your supposition is likely correct--You did see the same radio in different packages. DX-160 wasn't related to S-120A, however. Actually, DX-160 was a better radio. |
#5
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On Thursday, September 26, 2013 5:05:31 PM UTC-4, D. Peter Maus wrote:
On 9/26/13 24:03 , Michael Black wrote: IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. DX-160 was made by the late GRE, of Japan. OEM manufacturer for a number of companies. So, your supposition is likely correct--You did see the same radio in different packages. DX-160 wasn't related to S-120A, however. Actually, DX-160 was a better radio. Isn't Alinco part of GRE ? Or maybe the other way around. They seem to have one HF receiver currently in production . It is DX-R8 . |
#6
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#7
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On 09/26/2013 02:05 PM, D. Peter Maus wrote:
On 9/26/13 24:03 , Michael Black wrote: IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. DX-160 was made by the late GRE, of Japan. OEM manufacturer for a number of companies. So, your supposition is likely correct--You did see the same radio in different packages. DX-160 wasn't related to S-120A, however. Actually, DX-160 was a better radio. Are you sure GRE has gone to the great trash heap? http://www.gre.co.jp/business/radiocom_e.html http://greamerica.com/ They look pretty alive on the web. HRO sells their full line of very nice scanning radios. |
#8
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On 09/27/2013 07:11 AM, dave wrote:
On 09/26/2013 02:05 PM, D. Peter Maus wrote: On 9/26/13 24:03 , Michael Black wrote: IN looking at pictures for one of those Radio Shack receivers, it looks quite a bit like what I remember the layout of my Hallicrafters S-120A junk receiver looked like. I should open that thing and look. But it made me wonder if we saw the same generic transistor receiver used by various companies in different cabinets. If nothing else, both receivers had the circuitry on one board, and the tuned circuits on another, which can't be good for good design. DX-160 was made by the late GRE, of Japan. OEM manufacturer for a number of companies. So, your supposition is likely correct--You did see the same radio in different packages. DX-160 wasn't related to S-120A, however. Actually, DX-160 was a better radio. Are you sure GRE has gone to the great trash heap? http://www.gre.co.jp/business/radiocom_e.html http://greamerica.com/ They look pretty alive on the web. HRO sells their full line of very nice scanning radios. Never mind: GRE Official Announcement 10/23/2012 October 23, 2012 To our valued Dealers and Customers, Due to circumstances beyond its control, General Research of Electronics of Japan (GRE) is temporarily not able to manufacture the GRECOM and Radio Shack branded radio scanners. The Chinese Government’s plan to redevelop the area where the GRE factory had been in operation for over ten years finally forced its closure. Anticipating this eventuality, GRE was in the process of building a new factory but unfortunately the cost of raw materials, labor and increased taxes created a heavy financial investment burden that could not be effectively recovered. GRE America continues to market, support and service the GRECOM branded scanners and is contractually committed to keep the Library Database updated and current. GRE America will continue to market, service and support Alinco’s radio products without any interruption. We sincerely apologize for this unfortunate turn of events. GRE is proceeding to establish a contract with a new factory and believes it will be able to restart the manufacturing in the near future. For continued sales, service and support, please contact the GRE America office. Raj Gounder Director of sales GRE America, Inc. |
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