![]() |
CFRX 6070- an easy QSL
On Fri, 29 Sep 2006 23:55:12 GMT, "David Eduardo"
wrote: "dxAce" wrote in message ... David Eduardo wrote: "dxAce" wrote in message ... David Frackelton Gleason, still posing as 'Eduardo', tried really, really hard when he wrote: "dxAce" wrote in message ... "ve3..." wrote: CFRX 6070 khz uses a Harris !kw transmitter to relay the programs of CFRB Toronto 1010 khz. The website given below states that they use an Elcom-Bauer 701B-HF transmitter. Most of the Bauers were kits, built on site by the station engineer. This would indicate the transmitter is around 35 years old, and probably failing. Well, the article states that the transmitter was installed in 1983... Probably used, then. Wrong! They purchased it new. It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. |
CFRX 6070- an easy QSL
"David" wrote in message ... It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. |
CFRX 6070- an easy QSL
"dxAce" wrote in message ... David Eduardo wrote: "dxAce" wrote in message ... David Eduardo wrote: "dxAce" wrote in message ... David Frackelton Gleason, still posing as 'Eduardo', tried really, really hard when he wrote: "dxAce" wrote in message ... "ve3..." wrote: CFRX 6070 khz uses a Harris !kw transmitter to relay the programs of CFRB Toronto 1010 khz. The website given below states that they use an Elcom-Bauer 701B-HF transmitter. Most of the Bauers were kits, built on site by the station engineer. This would indicate the transmitter is around 35 years old, and probably failing. Well, the article states that the transmitter was installed in 1983... Probably used, then. Wrong! They purchased it new. It's still really old, which was my point. No, going back through the posts one will find that you were simply talking out your ass. You are such a fool. You have a total inability to read. I said, in reference to the Bauer, that most were kits and "this would indicate that the transmitter would be 35 years old." For your dense mind, this means, as anyone with a tad of English would know, that "if the transmitter was one of the kits, then it would be 35 years old." It was later clarified that the transmitter was a later model, and is STILL nearly a quarter century old. You probably pick in your neighbors' garbage to see what you can fabricate about them, too. If you had been a Roman, your specialty would have been the reading of entrails to find hidden messages in goat's livers. |
CFRX 6070- an easy QSL
On Sat, 30 Sep 2006 06:12:31 GMT, "David Eduardo"
wrote: "David" wrote in message .. . It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. I said 707. A transmitter with stock outputs of 1 KW and 0.25 KW can easily be restrapped for 0.5 KW. |
CFRX 6070- an easy QSL
"David" wrote in message ... On Sat, 30 Sep 2006 06:12:31 GMT, "David Eduardo" wrote: "David" wrote in message . .. It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. I said 707. A transmitter with stock outputs of 1 KW and 0.25 KW can easily be restrapped for 0.5 KW. I saw a bunch of 707's, and they were designed for Class IV stations running 1 kw always, meaning they had no cutback switch. It was brought to the market when the FCC approved 1 kw day an night for the roughly 1000 class IV stations in the US, and originally had no cutback. Was there a model with such? The issue with using a higher power transmitter for lower licensed fulltime power is that the FCC did not approve usage of such in the 60's and a modified right was likely not type accepted (doable with paperwork, though). A believe the rules did not allow more than 20% or 25% greater transmitter power than the licensed power or higher power if licensed at more than one power level. The 701 superseded the 707, and used 4.500's. The B model was solid state in the exciter and audio driver, only having 4 final and modulator tubes. |
CFRX 6070- an easy QSL
"David Eduardo" wrote in message .. . "David" wrote in message ... On Sat, 30 Sep 2006 06:12:31 GMT, "David Eduardo" wrote: "David" wrote in message ... It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. I said 707. A transmitter with stock outputs of 1 KW and 0.25 KW can easily be restrapped for 0.5 KW. I saw a bunch of 707's, and they were designed for Class IV stations running 1 kw always, meaning they had no cutback switch. It was brought to the market when the FCC approved 1 kw day an night for the roughly 1000 class IV stations in the US, and originally had no cutback. Was there a model with such? My mistake. I called a guy who actually built a 707 (and maintained several other Bauers as well) and he said the 707 came as a both a fixed power kit for staitons with one level and an adjustable second power selection for those with multiple output levels. Here is one without the cutback... a 1 kw daytimer on 1290 that had no need for two power levels. http://www.oldradio.com/archives/hardware/707.htm The issue with using a higher power transmitter for lower licensed fulltime power is that the FCC did not approve usage of such in the 60's and a modified right was likely not type accepted (doable with paperwork, though). A believe the rules did not allow more than 20% or 25% greater transmitter power than the licensed power or higher power if licensed at more than one power level. The 701 superseded the 707, which was built for about 10 years, and used 4-500's. The B model was solid state in the exciter and audio driver, only having 4 final and modulator tubes. |
CFRX 6070- an easy QSL
David Eduardo wrote: "David" wrote in message ... On Sat, 30 Sep 2006 06:12:31 GMT, "David Eduardo" wrote: "David" wrote in message . .. It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. I said 707. A transmitter with stock outputs of 1 KW and 0.25 KW can easily be restrapped for 0.5 KW. I saw a bunch of 707's, and they were designed for Class IV stations running 1 kw always, meaning they had no cutback switch. It was brought to the market when the FCC approved 1 kw day an night for the roughly 1000 class IV stations in the US, and originally had no cutback. Was there a model with such? The 707 was apparently designed to operate at both 1000 watts and 250 watts. dxAce Michigan USA |
CFRX 6070- an easy QSL
On Sat, 30 Sep 2006 15:30:53 GMT, "David Eduardo"
wrote: "David" wrote in message .. . On Sat, 30 Sep 2006 06:12:31 GMT, "David Eduardo" wrote: "David" wrote in message ... It's still really old, which was my point. Bauer did not sell many transmitters in that era. The 701B was a derivative of a "quick and dirty" model they built to fill the need of about 1,000 class IV stations for new transmitters when the FCC authorized 1 kw for them. I think they sold something like 300 at the time, which was quite amazing. The 701B was simply an old-technology high-level plate modulated transmitter using, if I recall, glass envelope tubes... maybe the 4-500A. KXIV and KRIZ both used the 707, in the '60s. KUPD got a couple in the early '70s I recall. 4-400As. I understood the B model at some point used 4-500's due to the relatively short life of the US built 4-400 from EIMAC, and the transmitter's inability to use the European QB4-1100 (without major work), which lasted as much as 5,000 hours more than the 4-400A. KUPD was 500 watts all through the 60's. I do not recall the 701B having a power cutback in the stock model... must have been a modified 701 which was sold as a 1 kw only rig for upgrading Class IV station. I said 707. A transmitter with stock outputs of 1 KW and 0.25 KW can easily be restrapped for 0.5 KW. I saw a bunch of 707's, and they were designed for Class IV stations running 1 kw always, meaning they had no cutback switch. It was brought to the market when the FCC approved 1 kw day an night for the roughly 1000 class IV stations in the US, and originally had no cutback. Was there a model with such? The issue with using a higher power transmitter for lower licensed fulltime power is that the FCC did not approve usage of such in the 60's and a modified right was likely not type accepted (doable with paperwork, though). A believe the rules did not allow more than 20% or 25% greater transmitter power than the licensed power or higher power if licensed at more than one power level. The 701 superseded the 707, and used 4.500's. The B model was solid state in the exciter and audio driver, only having 4 final and modulator tubes. I've seen the transmitter. I knew Frank Muter. http://www.rwonline.com/reference-ro..._bauer_7.shtml |
CFRX 6070- an easy QSL
"dxAce" wrote in message ... The 707 was apparently designed to operate at both 1000 watts and 250 watts. I ma told by an engineer who worked on several that the cutback kit was an option. The one I linked to, a 1 kw daytimer in Texas, did not have a cutback. |
CFRX 6070- an easy QSL
"David" wrote in message ... power level. The 701 superseded the 707, and used 4.500's. The B model was solid state in the exciter and audio driver, only having 4 final and modulator tubes. I've seen the transmitter. I knew Frank Muter. This sounds like your statement that the Level Devil was never used as a compressor. There were 707's with the cutback, and 707's without. Our chief in LA has worked on both (And both of us have worked with the same Bauer 5 kw at KWIZ in Santa Ana). |
All times are GMT +1. The time now is 02:55 AM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com