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Need Recommendations for a New HF Amp
My trusted Amp Supply LK-500ZB got damaged after a lightning strike. I am
looking to replace this HF amp (which used two 3-500Z tubes). Any recommendations for a new legal limit HF amp? What about the Amritron amps? The AL-82 uses two 3-500Z tubes. The AL-1200 uses a 3CX1200A7. The AL-1500 uses the 3CX1500A tube. In 10 years time, which tube will be easiest to get? Any other manufacturers I should consider? Rob P.S. Since I do a lot of RTTY and SSTV, I am staying away from the solid state amps. |
"Rob" wrote What about the Amritron amps? The AL-82 uses two 3-500Z tubes. The AL-1200 uses a 3CX1200A7. The AL-1500 uses the 3CX1500A tube. AL-1200. This is one tough box! Full 1500W key down for as long as you want. 73, de Hans, K0HB |
"Rob" wrote What about the Amritron amps? The AL-82 uses two 3-500Z tubes. The AL-1200 uses a 3CX1200A7. The AL-1500 uses the 3CX1500A tube. AL-1200. This is one tough box! Full 1500W key down for as long as you want. 73, de Hans, K0HB |
On Mon, 3 May 2004 18:49:55 -0400, "Rob" wrote:
My trusted Amp Supply LK-500ZB got damaged after a lightning strike. I am looking to replace this HF amp (which used two 3-500Z tubes). Any recommendations for a new legal limit HF amp? What about the Amritron amps? The AL-82 uses two 3-500Z tubes. The AL-1200 uses a 3CX1200A7. The AL-1500 uses the 3CX1500A tube. In 10 years time, which tube will be easiest to get? Any other manufacturers I should consider? Rob P.S. Since I do a lot of RTTY and SSTV, I am staying away from the solid state amps. Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP -- Note - Remove the X from my e-mail address for direct replies |
On Mon, 3 May 2004 18:49:55 -0400, "Rob" wrote:
My trusted Amp Supply LK-500ZB got damaged after a lightning strike. I am looking to replace this HF amp (which used two 3-500Z tubes). Any recommendations for a new legal limit HF amp? What about the Amritron amps? The AL-82 uses two 3-500Z tubes. The AL-1200 uses a 3CX1200A7. The AL-1500 uses the 3CX1500A tube. In 10 years time, which tube will be easiest to get? Any other manufacturers I should consider? Rob P.S. Since I do a lot of RTTY and SSTV, I am staying away from the solid state amps. Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP -- Note - Remove the X from my e-mail address for direct replies |
Barry wrote:
Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Barry wrote:
Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Rob:
The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Rob:
The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Any recommendations for a new legal limit HF amp? Rob P.S. Since I do a lot of RTTY and SSTV, I am staying away from the solid state amps. Rob, Don't buy anything until you hear it run. Some really make noise! |
Any recommendations for a new legal limit HF amp? Rob P.S. Since I do a lot of RTTY and SSTV, I am staying away from the solid state amps. Rob, Don't buy anything until you hear it run. Some really make noise! |
Jeff Maass wrote:
Rob: The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. Many thanks for the info. Yes, noise is always a factor to consider. Too bad most of the specs for amps do not list the noise in db! The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Jeff Maass wrote:
Rob: The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. Many thanks for the info. Yes, noise is always a factor to consider. Too bad most of the specs for amps do not list the noise in db! The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
Take a look at TenTec. The original Titan amplifier was the best piece of ham gear I ever owned....... http://www.tentec.com/TT417.htm 73, Jim KH2D |
Take a look at TenTec. The original Titan amplifier was the best piece of ham gear I ever owned....... http://www.tentec.com/TT417.htm 73, Jim KH2D |
FYI: Some other amplifiers
Commander Amps URL: http://www.command1.com/ Ten Tec Amps URL: http://www.tentec.com/Amateur.htm Henry Amps URL: http://www.radiodan.com/Henry/henry_spec_list.htm ICOM http://www.icomamerica.com/amateur/amps/ QRO Technologies http://www.qrotec.com/ Emtron - Australia http://www.emtron.com.au/amplifiers.html Just FYI -- not any recommendations or comparisons to Alpha, Ameritron and Acon -- deje a lector guardarse Amateur Radio is the best back-up communications system in the world, and that's the way it is. Walter Cronkite --------------------------------------------------------------------- "Rob" wrote in message ... Jeff Maass wrote: Rob: The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. Many thanks for the info. Yes, noise is always a factor to consider. Too bad most of the specs for amps do not list the noise in db! The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
FYI: Some other amplifiers
Commander Amps URL: http://www.command1.com/ Ten Tec Amps URL: http://www.tentec.com/Amateur.htm Henry Amps URL: http://www.radiodan.com/Henry/henry_spec_list.htm ICOM http://www.icomamerica.com/amateur/amps/ QRO Technologies http://www.qrotec.com/ Emtron - Australia http://www.emtron.com.au/amplifiers.html Just FYI -- not any recommendations or comparisons to Alpha, Ameritron and Acon -- deje a lector guardarse Amateur Radio is the best back-up communications system in the world, and that's the way it is. Walter Cronkite --------------------------------------------------------------------- "Rob" wrote in message ... Jeff Maass wrote: Rob: The 4CX800A tubes are far more cost effective than the 3CX1200A7. I bought a tested pair of 4CX800As from Alpha for $221; the new prices for the 3CX1200A7 are ~$800. The 4CX800As seem tough and work well in my Alpha 91b amps. I've used the AL-1200 (we have one at the PJ2T contest station). The 3CX1200A7 is an "instant on" tube (like the 3-500Z), and requires nearly 100W drive for full output. It's considerably noisier than the Alphas. The AL-1200 is a BIG package. Many thanks for the info. Yes, noise is always a factor to consider. Too bad most of the specs for amps do not list the noise in db! The Alpha 91b/99 requires a 3 minutes warmup time, and requires about 45 watts for full output. I consider this lower drive requirement a plus, since it means that my transceiver runs cooler during a contest. The Alphas have much better circuitry to protect me from errors made when I'm tired and/or in the 'heat of battle'. It's considerably better- built mechanically than the AL-1200. There are other manufacturers making amps with the 4CX800A, and any of these would be a good choice. If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. Jeff K8ND "Rob" wrote in message . .. Barry wrote: Take a look at the Acom. I have the 2000A and run RTTY full power in contests. My coax gets warmer than the amp :.) It uses the Svetlana 4CX800A tubes, which are reliable, readily available and inexpensive. If you don't want to spend the big bucks for autotune, etc. look at the 1000. Barry W2UP Thanks. First time I have heard about Acom. It looks like they make very high quality amps (like the Aplhas). I have aasked for prices since there doesn't seem to be any on the Acom web site. I noticed the Alpha 99 also uses the 4CX800A tubes. Which tubes are better -- the 3X1200A7 or the 4CX800A? Rob |
In rec.radio.amateur.dx Rob wrote:
If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. The TenTec Titan 425 uses a pair of 3CX800A7 and is a great amplifier if you do CW as your main mode since it does perfect QSK. The power supply is separate from the amp itself so you can actually have it on a table in the shack without it taking up too much space. Peter Lemken DF5JT Berlin -- Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming, 'Wow, what a ride!' |
In rec.radio.amateur.dx Rob wrote:
If you can think of any of manufacturers, please post them. The only manufacturers of amps I know of are Alpha, Ameritron and Acon. (But Ameritron does not seem to make amps wiith the 4CX800A tubes). I am sure there must be other manufacturers I should consider. The TenTec Titan 425 uses a pair of 3CX800A7 and is a great amplifier if you do CW as your main mode since it does perfect QSK. The power supply is separate from the amp itself so you can actually have it on a table in the shack without it taking up too much space. Peter Lemken DF5JT Berlin -- Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out and loudly proclaiming, 'Wow, what a ride!' |
deje a lector guardarse wrote:
FYI: Some other amplifiers Commander Amps URL: http://www.command1.com/ Ten Tec Amps URL: http://www.tentec.com/Amateur.htm Henry Amps URL: http://www.radiodan.com/Henry/henry_spec_list.htm ICOM http://www.icomamerica.com/amateur/amps/ QRO Technologies http://www.qrotec.com/ Emtron - Australia http://www.emtron.com.au/amplifiers.html Just FYI -- not any recommendations or comparisons to Alpha, Ameritron and Acon Thanks for all the links. I had bettter start clicking! Rob |
deje a lector guardarse wrote:
FYI: Some other amplifiers Commander Amps URL: http://www.command1.com/ Ten Tec Amps URL: http://www.tentec.com/Amateur.htm Henry Amps URL: http://www.radiodan.com/Henry/henry_spec_list.htm ICOM http://www.icomamerica.com/amateur/amps/ QRO Technologies http://www.qrotec.com/ Emtron - Australia http://www.emtron.com.au/amplifiers.html Just FYI -- not any recommendations or comparisons to Alpha, Ameritron and Acon Thanks for all the links. I had bettter start clicking! Rob |
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