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#1
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1936 vintage rig
Hi All,
My father, W7GEG, got his ticket in 1936 when he was in high school. Like many others, he built his first rig. His transmitter was based on an 809 tube and had plug-in coils to switch bands. His receiver was a three-tube regenerative, but he doesn't remember the tube types. He worked mainly 40 meters. According to my dad, both designs were very popular at the time. The rig worked the first time, and was a thrilling experience for him. "I probably wouldn't have gone into a technical career had the radio not worked," he told me. He holds a PhD in physics. Can any old-timers out there help me with any information regarding what he might have built? I thought I might try to either find or build a similar rig as a gift, or at least present him with the plans the equipment was based on. Thanks, 73, Glenn Dixon AC7ZN |
#2
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1936 vintage rig
In article .com,
MadEngineer wrote: Hi All, Can any old-timers out there help me with any information regarding what he might have built? I thought I might try to either find or build a similar rig as a gift, or at least present him with the plans the equipment was based on. Thanks, 73, Glenn Dixon AC7ZN I'm Not really an old timer yet but you can get the complete QST's from 1930-1939 on CDROM from the ARRL. That'll be a nice gift, Im sure there are plans in there to build a similar rig.. 73 |
#3
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1936 vintage rig
"MadEngineer" wrote in message
oups.com... Hi All, My father, W7GEG, got his ticket in 1936 when he was in high school. Like many others, he built his first rig. His transmitter was based on an 809 tube and had plug-in coils to switch bands. His receiver was a three-tube regenerative, but he doesn't remember the tube types. He worked mainly 40 meters. According to my dad, both designs were very popular at the time. The rig worked the first time, and was a thrilling experience for him. "I probably wouldn't have gone into a technical career had the radio not worked," he told me. He holds a PhD in physics. Can any old-timers out there help me with any information regarding what he might have built? I thought I might try to either find or build a similar rig as a gift, or at least present him with the plans the equipment was based on. Thanks, 73, Glenn Dixon AC7ZN Glenn- Google search for "GlowBugs" Here is an 809 used as a final amplifier in a homebrew design (AB0CW) http://www.qsl.net/ab0cw/809pa.htm The 807 was also a very popular tube of that era http://www.qsl.net/ab4yd/myprojects/index.htm http://www.qsl.net/ab4yd/myprojects/80m_807_a/final.jpg Some transmitter designs http://www.mines.uidaho.edu/%7eglowbugs/tx/index.html |
#4
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1936 vintage rig
gb wrote:
"MadEngineer" wrote in message roups.com... Hi All, My father, W7GEG, got his ticket in 1936 when he was in high school. Like many others, he built his first rig. His transmitter was based on an 809 tube and had plug-in coils to switch bands. His receiver was a three-tube regenerative, but he doesn't remember the tube types. He worked mainly 40 meters. According to my dad, both designs were very popular at the time. The rig worked the first time, and was a thrilling experience for him. "I probably wouldn't have gone into a technical career had the radio not worked," he told me. He holds a PhD in physics. Can any old-timers out there help me with any information regarding what he might have built? I thought I might try to either find or build a similar rig as a gift, or at least present him with the plans the equipment was based on. Thanks, 73, Glenn Dixon AC7ZN Glenn- Google search for "GlowBugs" Here is an 809 used as a final amplifier in a homebrew design (AB0CW) http://www.qsl.net/ab0cw/809pa.htm The 807 was also a very popular tube of that era http://www.qsl.net/ab4yd/myprojects/index.htm http://www.qsl.net/ab4yd/myprojects/80m_807_a/final.jpg Some transmitter designs http://www.mines.uidaho.edu/%7eglowbugs/tx/index.html And if you decide you need some parts I am sure that I and others can come up with most. Post your need here and some body will have what you need. Bill K7NOM |
#5
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1936 vintage rig
Both the transmitter and receiver are "classic" designs that survived
(with variations) from the 1930's through at least the 1960's ARRL handbooks. I don't think you'll find an exact copy of what he built because most of these rigs were truly homebrewed out of what was available at the time. By the 50's and 60's most single-tube transmitters didn't use triodes like the 809 but used tetrodes like the 1625, the 6146, sweep tubes, etc. But the principle is the same. A three-tube regenerative was a very long-lived design as well, Allied sold their "Space Spanner" and "Ocean Hopper" up through the 1960's I think, maybe even the early 70's. A google for "three-tube regenerative" shows up several in this vein using 30's era tubes, for example: http://www.qsl.net/wd4nka/TEXTS/REGENf~1.HTM Tim. |
#6
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1936 vintage rig
Tim Shoppa wrote:
Both the transmitter and receiver are "classic" designs that survived (with variations) from the 1930's through at least the 1960's ARRL handbooks. I don't think you'll find an exact copy of what he built because most of these rigs were truly homebrewed out of what was available at the time. By the 50's and 60's most single-tube transmitters didn't use triodes like the 809 but used tetrodes like the 1625, the 6146, sweep tubes, etc. But the principle is the same. A three-tube regenerative was a very long-lived design as well, Allied sold their "Space Spanner" and "Ocean Hopper" up through the 1960's I think, maybe even the early 70's. A google for "three-tube regenerative" shows up several in this vein using 30's era tubes, for example: http://www.qsl.net/wd4nka/TEXTS/REGENf~1.HTM Tim. I built a single tube regen using a #19 tube from plans in a book sold by Lindsay books (www.lindsaybks.com). It's a surprisingly sensitive radio (using my GAP Titan antenna). You do need 'phones to hear anything, but I suppose I could have added an output stage to drive a speaker (maybe using a #33 pentode tube). BTW the #19 is a dual triode, so this radio is the equal of a two tube set. |
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