Home |
Search |
Today's Posts |
|
#1
![]()
posted to rec.boats
|
|||
|
|||
![]() wrote in message ... On Tue, 5 May 2009 16:39:41 -0400, "Eisboch" wrote: In the old days, real "skill" meant determining *what* component or components needed to be replaced using a schematic, meter and/or an o'scope. Much of today's modern electronic circuitry has built in diagnostics that scream "replace me" when they go bad. We called it "the bad part falls out smoking on the floor". I liked working on computers when a CPU was the size of a commercial sub-zero fridge and had 1000 cards. Since then it is "cut open the box and plug in a new one". I've been out of the electronics field for over 30 years, but am absolutely amazed at the advances made since I went to school. I learned vacuum tube theory, transistors and had a basic introduction to digital in the form of TTL (5v) logic devices, soon after replaced by 12v CMOS mainly because TTL just wasn't reliable. A digital display was a row of Nixie Tubes with the proper internal elements illuminated for a display. Electronics then was all discrete components and a piece of gear designed with them mounted on a single layer PC board was "High Tech". Now, a complete FM receiver and 5.1 surround sound decoder is on a single chip that costs about 53 cents to manufacture. It's really an amazing evolution. Soon, PC boards will lose their copper conductors, replaced by modulated LEDs and fiber optics. The size of products will continue to shrink and become even more powerful. Eisboch |
#2
![]()
posted to rec.boats
|
|||
|
|||
![]()
On May 5, 8:52*pm, "Eisboch" wrote:
wrote in message ... On Tue, 5 May 2009 16:39:41 -0400, "Eisboch" wrote: In the old days, real "skill" meant determining **what* component or components needed to be replaced using a schematic, meter and/or an o'scope. Much of today's modern electronic circuitry has built in diagnostics that scream "replace me" when they go bad. We called it "the bad part falls out smoking on the floor". I liked working on computers when a CPU was the size of a commercial sub-zero fridge and had 1000 cards. Since then it is "cut open the box and plug in a new one". I've been out of the electronics field for over 30 years, but am absolutely amazed at the advances made since I went to school. * I learned vacuum tube theory, transistors and had a basic introduction to digital in the form of TTL *(5v) logic devices, soon after replaced by 12v CMOS mainly because TTL just wasn't reliable. * A digital display was a row of Nixie Tubes with the proper internal elements illuminated for a display. * Electronics then was all discrete components and a piece of gear designed with them mounted on a single layer PC board was "High Tech". Now, a complete FM receiver and 5.1 surround sound decoder is on a single chip that costs about 53 cents to manufacture. * It's really an amazing evolution. * Soon, PC boards will lose their copper conductors, replaced by modulated LEDs and fiber optics. * The size of products will continue to shrink and become even more powerful. Eisboch I am a bit younger but the first time I ever did a repair was taking apart a tube CB radio and bringing the tubes to radio shack where they had a tester.. It was a big box about the size of a video game.. You plugged in the tube and hit the button.. I think I was about 8-10 at the time. |
#3
![]()
posted to rec.boats
|
|||
|
|||
![]() |
#4
![]()
posted to rec.boats
|
|||
|
|||
![]() "Richard Casady" wrote in message ... On Tue, 5 May 2009 18:01:38 -0700 (PDT), wrote: I am a bit younger but the first time I ever did a repair was taking apart a tube CB radio and bringing the tubes to radio shack where they had a tester.. It was a big box about the size of a video game.. You plugged in the tube and hit the button.. I think I was about 8-10 at the time. When I was a kid there was a tube tester at the drug store. Radio Shack sold to radio amateurs mostly, and it was downtown. Everything was downtown there were no malls. Casady I think I mentioned before that I remember as a young kid going with my Dad to the original Radio Shack that was located somewhere near the "Common" in Boston. Eisboch |
#5
![]()
posted to rec.boats
|
|||
|
|||
![]()
On May 6, 10:01*am, Richard Casady
wrote: On Tue, 5 May 2009 18:01:38 -0700 (PDT), wrote: I am a bit younger but the first time I ever did a repair was taking apart a tube CB radio and bringing the tubes to radio shack where they had a tester.. *It was a big box about the size of a video game.. You plugged in the tube and hit the button.. I think I was about 8-10 at the time. When I was a kid there was a tube tester at the drug store. Radio Shack sold to radio amateurs mostly, and it was downtown. Everything was downtown there were no malls. Casady Yep, and Heathkit kits were a spin off. My older brother built a Heathkit shortwave radio, then a Heathkit guitar amp! Man, we used to stay up at night and listen to that shortwave radio, and to us kids stuck in nowhere, NY, it was like listening to another world! Same with when we'd get AM skip and listen to WWVA in Wheeling, WVa. It seemed exotic to think we were listening to someone talking that was that far away! |
#7
![]()
posted to rec.boats
|
|||
|
|||
![]()
On May 6, 11:47*am, "Eisboch" wrote:
wrote in message ... On Wed, 6 May 2009 07:18:29 -0700 (PDT), wrote: On May 6, 10:01 am, Richard Casady wrote: On Tue, 5 May 2009 18:01:38 -0700 (PDT), wrote: I am a bit younger but the first time I ever did a repair was taking apart a tube CB radio and bringing the tubes to radio shack where they had a tester.. It was a big box about the size of a video game.. You plugged in the tube and hit the button.. I think I was about 8-10 at the time. When I was a kid there was a tube tester at the drug store. Radio Shack sold to radio amateurs mostly, and it was downtown. Everything was downtown there were no malls. Casady Yep, and Heathkit kits were a spin off. My older brother built a Heathkit shortwave radio, then a Heathkit guitar amp! Man, we used to stay up at night and listen to that shortwave radio, and to us kids stuck in nowhere, NY, it was like listening to another world! Same with when we'd get AM skip and listen to WWVA in Wheeling, WVa. It seemed exotic to think we were listening to someone talking that was that far away! There were 3 or 4 of those 50KW clear channel stations we could work in DC. I liked WLS out of Chicago (Dick Biondi) WOWO from New York worked too. WBZ in Boston was one of the original 50kw clear channel stations. *I could occasionally pick it up at night in Jupiter, FL a few years ago. Dick Summer's Night Light Show (with Irving, the Venus Fly-Trap) *caused many sleepless nights back in the 60's. http://www.wvnh.net/summer/dicksummer.htm Eisboch- Hide quoted text - - Show quoted text - Hunting for skip channels is a fun passtime! I still do it! |
#8
![]()
posted to rec.boats
|
|||
|
|||
![]()
wrote:
On Wed, 6 May 2009 10:26:25 -0700 (PDT), wrote: Yep, and Heathkit kits were a spin off. My older brother built a Heathkit shortwave radio, then a Heathkit guitar amp! Man, we used to stay up at night and listen to that shortwave radio, and to us kids stuck in nowhere, NY, it was like listening to another world! Same with when we'd get AM skip and listen to WWVA in Wheeling, WVa. It seemed exotic to think we were listening to someone talking that was that far away! There were 3 or 4 of those 50KW clear channel stations we could work in DC. I liked WLS out of Chicago (Dick Biondi) WOWO from New York worked too. WBZ in Boston was one of the original 50kw clear channel stations. I could occasionally pick it up at night in Jupiter, FL a few years ago. Dick Summer's Night Light Show (with Irving, the Venus Fly-Trap) caused many sleepless nights back in the 60's. http://www.wvnh.net/summer/dicksummer.htm Eisboch- Hide quoted text - - Show quoted text - Hunting for skip channels is a fun passtime! I still do it! If you are serious about DXing AM band you really need a long wire antenna and that becomes a lightning rod here. I listened to XERF, the Mexican border blaster, for Wolfman Jack. I vaguely remember one of the staff announcers claiming it had a lot more than 50kw of broadcast power. It was the only station we listened to at the near-weekly sandbar parties on the "mighty" Kaw River. |
#9
![]()
posted to rec.boats
|
|||
|
|||
![]()
On May 6, 2:44*pm, wrote:
On Wed, 6 May 2009 10:26:25 -0700 (PDT), wrote: Yep, and Heathkit kits were a spin off. My older brother built a Heathkit shortwave radio, then a Heathkit guitar amp! Man, we used to stay up at night and listen to that shortwave radio, and to us kids stuck in nowhere, NY, it was like listening to another world! Same with when we'd get AM skip and listen to WWVA in Wheeling, WVa. It seemed exotic to think we were listening to someone talking that was that far away! There were 3 or 4 of those 50KW clear channel stations we could work in DC. I liked WLS out of Chicago (Dick Biondi) WOWO from New York worked too. WBZ in Boston was one of the original 50kw clear channel stations. *I could occasionally pick it up at night in Jupiter, FL a few years ago. Dick Summer's Night Light Show (with Irving, the Venus Fly-Trap) *caused many sleepless nights back in the 60's. http://www.wvnh.net/summer/dicksummer.htm Eisboch- Hide quoted text - - Show quoted text - Hunting for skip channels is a fun passtime! I still do it! If you are serious about DXing AM band you really need a long wire antenna and that becomes a lightning rod here.- Hide quoted text - - Show quoted text - My brother lives on top of a mountain in western NY, and he made a ground plane antenna that did really well. |
#10
![]()
posted to rec.boats
|
|||
|
|||
![]()
On May 6, 11:39*am, wrote:
On Wed, 6 May 2009 07:18:29 -0700 (PDT), wrote: On May 6, 10:01*am, Richard Casady wrote: On Tue, 5 May 2009 18:01:38 -0700 (PDT), wrote: I am a bit younger but the first time I ever did a repair was taking apart a tube CB radio and bringing the tubes to radio shack where they had a tester.. *It was a big box about the size of a video game.. You plugged in the tube and hit the button.. I think I was about 8-10 at the time. When I was a kid there was a tube tester at the drug store. Radio Shack sold to radio amateurs mostly, and it was downtown. Everything was downtown there were no malls. Casady Yep, and Heathkit kits were a spin off. My older brother built a Heathkit shortwave radio, then a Heathkit guitar amp! Man, we used to stay up at night and listen to that shortwave radio, and to us kids stuck in nowhere, NY, it was like listening to another world! Same with when we'd get AM skip and listen to WWVA in Wheeling, WVa. It seemed exotic to think we were listening to someone talking that was that far away! There were 3 or 4 of those 50KW clear channel stations we could work in DC. I liked WLS out of Chicago (Dick Biondi) WOWO from New York worked too.- Hide quoted text - - Show quoted text - The valley we lived in in western NY had some limitations! We couldn't get hardly any television up there! |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Some Sarah! | General | |||
Why is Sarah Palin in... | General | |||
Why is Sarah Palin in... | General | |||
Fun with Sarah | General | |||
something about Sarah | General |