Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

   Home   Help Search  
Pages: Prev 1 [2] 3 Next   Go Down
  Print  
Author Topic: kx3 with kxpa100  (Read 16416 times)
KD8MJR
Member

Posts: 2235




Ignore
« Reply #15 on: June 30, 2013, 07:09:05 PM »

I am not sure why swl2002 says it will be a splattering CB amp, I see no proof of that but I will say that the price is very high for an amp in that power range.
Logged
SWL2002
Member

Posts: 262




Ignore
« Reply #16 on: July 01, 2013, 03:37:44 AM »

Yes, the new 100-watt amp is expensive but it is far from a CB amp.  I don't know SWL2002 but unless he works for Elecraft or is a beta-tester, he knows nothing of what he is talking about.  After all, it is not even available yet.  Knowing Wayne and Eric at Elecraft (plus the other designers) this amp will be top notch.  It is actually cheaper than a few other amps in the same category but not by much (not enough to buy dinner for two at a pizza house).

As for me, I own the KX3 as well as  K3/100 and also the KPA500, P3, KAT500, KX1, and other radios and amplifiers too; BUT, I will not be buying the 100-watt amp because I am just fine using the KX3 as my QRP rig and with CW this works just fine for me -- no need for more power.  As for SSB, I have actually only used SSB once with the KX3.  All other activity has been CW.

73, phil, K7PEH

We know what MOSFETs they are using.  Its another Mitsubishi splatterbox.
Logged
NR4C
Member

Posts: 308




Ignore
« Reply #17 on: July 02, 2013, 11:13:23 AM »

In comparing prices of amps for the KX3, note the KXP100-F (Factory Built) is $749.00 not $700.  To be fair, all the other amps in the list were factory built and not all were 100 Watts.

...bill nr4c
Logged
AE7WC
Member

Posts: 4




Ignore
« Reply #18 on: July 02, 2013, 04:08:00 PM »

Yes, the new 100-watt amp is expensive but it is far from a CB amp.  I don't know SWL2002 but unless he works for Elecraft or is a beta-tester, he knows nothing of what he is talking about.  After all, it is not even available yet.  Knowing Wayne and Eric at Elecraft (plus the other designers) this amp will be top notch.  It is actually cheaper than a few other amps in the same category but not by much (not enough to buy dinner for two at a pizza house).

As for me, I own the KX3 as well as  K3/100 and also the KPA500, P3, KAT500, KX1, and other radios and amplifiers too; BUT, I will not be buying the 100-watt amp because I am just fine using the KX3 as my QRP rig and with CW this works just fine for me -- no need for more power.  As for SSB, I have actually only used SSB once with the KX3.  All other activity has been CW.

73, phil, K7PEH

We know what MOSFETs they are using.  Its another Mitsubishi splatterbox.

Could you please quote your sources for the BOM info and functional characteristics?  Inquiring minds want to know.
Logged
AE7WC
Member

Posts: 4




Ignore
« Reply #19 on: July 02, 2013, 05:25:47 PM »

Yes, the new 100-watt amp is expensive but it is far from a CB amp.  I don't know SWL2002 but unless he works for Elecraft or is a beta-tester, he knows nothing of what he is talking about.  After all, it is not even available yet.  Knowing Wayne and Eric at Elecraft (plus the other designers) this amp will be top notch.  It is actually cheaper than a few other amps in the same category but not by much (not enough to buy dinner for two at a pizza house).

As for me, I own the KX3 as well as  K3/100 and also the KPA500, P3, KAT500, KX1, and other radios and amplifiers too; BUT, I will not be buying the 100-watt amp because I am just fine using the KX3 as my QRP rig and with CW this works just fine for me -- no need for more power.  As for SSB, I have actually only used SSB once with the KX3.  All other activity has been CW.

73, phil, K7PEH

We know what MOSFETs they are using.  Its another Mitsubishi splatterbox.

SWL2002 - "Bob" please give your personal creds for this kind of post.  I am an EE out of UC Berkeley, 1976, so you can be as technical as you want as I have been around the block a few times in the last 37 years.  Since you are unwilling to give a call sign or email this leads one to think one of the following:
•   You are an Elecraft employee and your conscience is causing you to be a whistle blower and are credible.
•   You are an industrial spy as the design info is proprietary and has not, to my knowledge, been released and may be credible.  (You did use the term 'we know what MOSFETS...')
•   You work for a competitor and are trying to discredit Elecraft's efforts (see above).
•   You are clueless and just like to get a rise out of people and see your comments on line.
I am not actually trying to slam you as, if you are right, I don't wish to waste my money on poorly made equipment.  So fire away - my email is listed if you don't want to post.
Logged
KE7TMA
Member

Posts: 471




Ignore
« Reply #20 on: July 03, 2013, 09:57:16 PM »

I recently purchased and built a kx3 400x serial. I love the radio and I have taken it to parks and many other outings. However I find 10 watts just not enough for reliable enjoyable ssb contacts. 10 watts is fine 90% of the time for cw contacts, however a big part in my deciding to purchase this rig was the fact that Elecraft was developing a 100watt amp, and i figured this rig, could serve as a good home station that I could unplug and throw in a bag for portable qrp work. They recently announced the new kxpa100 watt amp. The amp is beautiful and I am sure it works great, but it is kind of pricy. I know you get what you pay for but at this price point for only 100 watts it puts a great many other amps in play. Take a look and tell me what you all think.

http://www.elecraft.com/tmp/kxpa100.htm



Another 12V splattery CB type amplifier.  Not good at all.

You've tested an amplifier that just came out this past week?  Or are you just making assumptions and pronouncements based upon the fact that it isn't Japanese and $4000?
Logged
KE7TMA
Member

Posts: 471




Ignore
« Reply #21 on: July 03, 2013, 09:58:06 PM »

I recently purchased and built a kx3 400x serial. I love the radio and I have taken it to parks and many other outings. However I find 10 watts just not enough for reliable enjoyable ssb contacts. 10 watts is fine 90% of the time for cw contacts, however a big part in my deciding to purchase this rig was the fact that Elecraft was developing a 100watt amp, and i figured this rig, could serve as a good home station that I could unplug and throw in a bag for portable qrp work. They recently announced the new kxpa100 watt amp. The amp is beautiful and I am sure it works great, but it is kind of pricy. I know you get what you pay for but at this price point for only 100 watts it puts a great many other amps in play. Take a look and tell me what you all think.

http://www.elecraft.com/tmp/kxpa100.htm



Another 12V splattery CB type amplifier.  Not good at all.

Jesus Christ! Do you ever freaking quit?

It's his job.  The Japanese are really suffering because they finally have some competition.
Logged
WX7G
Member

Posts: 6032




Ignore
« Reply #22 on: July 04, 2013, 06:54:14 AM »

Elecraft has never specified IMD for their products so we might have to wait until the ARRL reviews the KXPA-100 to know the actual IMD performance.

What might we predict based on Elecraft's track record? Two older products, the K3/10 and K3/100, have 3rd order IMD of -27 and -28 dB respectively. Two never products, the KX3 and the KXPA-500, have 3rd order IMD of -36 dB and -34 dB respectively. It appears that Elecraft has cleaned up their act, so to speak, and we might expect the KXPA-100 to be a clean amp.


« Last Edit: July 04, 2013, 07:16:31 AM by WX7G » Logged
SWL2002
Member

Posts: 262




Ignore
« Reply #23 on: July 04, 2013, 11:58:59 AM »

Yes, the new 100-watt amp is expensive but it is far from a CB amp.  I don't know SWL2002 but unless he works for Elecraft or is a beta-tester, he knows nothing of what he is talking about.  After all, it is not even available yet.  Knowing Wayne and Eric at Elecraft (plus the other designers) this amp will be top notch.  It is actually cheaper than a few other amps in the same category but not by much (not enough to buy dinner for two at a pizza house).

As for me, I own the KX3 as well as  K3/100 and also the KPA500, P3, KAT500, KX1, and other radios and amplifiers too; BUT, I will not be buying the 100-watt amp because I am just fine using the KX3 as my QRP rig and with CW this works just fine for me -- no need for more power.  As for SSB, I have actually only used SSB once with the KX3.  All other activity has been CW.

73, phil, K7PEH

We know what MOSFETs they are using.  Its another Mitsubishi splatterbox.

SWL2002 - "Bob" please give your personal creds for this kind of post.  I am an EE out of UC Berkeley, 1976, so you can be as technical as you want as I have been around the block a few times in the last 37 years.  Since you are unwilling to give a call sign or email this leads one to think one of the following:
•   You are an Elecraft employee and your conscience is causing you to be a whistle blower and are credible.
•   You are an industrial spy as the design info is proprietary and has not, to my knowledge, been released and may be credible.  (You did use the term 'we know what MOSFETS...')
•   You work for a competitor and are trying to discredit Elecraft's efforts (see above).
•   You are clueless and just like to get a rise out of people and see your comments on line.
I am not actually trying to slam you as, if you are right, I don't wish to waste my money on poorly made equipment.  So fire away - my email is listed if you don't want to post.


You can ask me anything EE related and I can answer you.  My credentials are my knowledge and I will match my knowledge with you any time. 

You can be in denial all you want about Elecraft's crappy TX performance but it is true.  I have nothing against the company Elecraft except that like most other Ham radio companies, they are safely in the CB amp category with their transmitters.  Pointing this out is NOT an attempt to hurt Elecraft's business.  Most of the technically incompetent appliance operators we call Hams today don't know the difference and don't care, so Elecraft is going to be OK.

AE7WC, please give your SSN so we can verify your "personal" credentials.  Maybe you are an Elecraft employee dispatched to the group to defend the company?

Logged
SWL2002
Member

Posts: 262




Ignore
« Reply #24 on: July 04, 2013, 12:00:29 PM »

Elecraft has never specified IMD for their products so we might have to wait until the ARRL reviews the KXPA-100 to know the actual IMD performance.

What might we predict based on Elecraft's track record? Two older products, the K3/10 and K3/100, have 3rd order IMD of -27 and -28 dB respectively. Two never products, the KX3 and the KXPA-500, have 3rd order IMD of -36 dB and -34 dB respectively. It appears that Elecraft has cleaned up their act, so to speak, and we might expect the KXPA-100 to be a clean amp.




Boy, that is a real stretch! Are you being paid by Elecraft to say this on eHam?
Logged
WX7G
Member

Posts: 6032




Ignore
« Reply #25 on: July 05, 2013, 10:07:46 AM »

SWL2002, let me see if I can help out. You are stuck in a rhetorical Mobius loop and are not gaining traction in arguing your point.

Argumentation consists of Logos, Ethos, and Pathos; technical argumentation is usually confined to Logos and Ethos. But you are using Pathos and many here are questioning the Ethos behind your arguments. That is why you are failing to effectively argue your point.

Logos involves logic, numbers, and is objective.
Ethos involves the credibility of the speaker.
Pathos involves the emotions, is subjective, and has no place in technical argumentation.  

Your credibility is brought up again and again because we don't know who you are. To bolster the Ethos of your argument we must know your name and call sign. To bolster the Logos of your argument you must back up your argument with factual numbers and the sources of these numbers. And your argument would be strengthened further if you refrain from employing Pathos ("CB splatter box, crappy, etc."). And you are using what I call deflection, which is to attempt to deflect the focus from a pertinent point to something that sounds the same but does not matter. For example, when asked your name and call sign, which are pertinent to the discussion, you ask for the person's SSN, which does not matter to this discussion.
« Last Edit: July 05, 2013, 10:16:08 AM by WX7G » Logged
AE7WC
Member

Posts: 4




Ignore
« Reply #26 on: July 05, 2013, 03:18:35 PM »

Yes, the new 100-watt amp is expensive but it is far from a CB amp.  I don't know SWL2002 but unless he works for Elecraft or is a beta-tester, he knows nothing of what he is talking about.  After all, it is not even available yet.  Knowing Wayne and Eric at Elecraft (plus the other designers) this amp will be top notch.  It is actually cheaper than a few other amps in the same category but not by much (not enough to buy dinner for two at a pizza house).

As for me, I own the KX3 as well as  K3/100 and also the KPA500, P3, KAT500, KX1, and other radios and amplifiers too; BUT, I will not be buying the 100-watt amp because I am just fine using the KX3 as my QRP rig and with CW this works just fine for me -- no need for more power.  As for SSB, I have actually only used SSB once with the KX3.  All other activity has been CW.

73, phil, K7PEH

We know what MOSFETs they are using.  Its another Mitsubishi splatterbox.

SWL2002 - "Bob" please give your personal creds for this kind of post.  I am an EE out of UC Berkeley, 1976, so you can be as technical as you want as I have been around the block a few times in the last 37 years.  Since you are unwilling to give a call sign or email this leads one to think one of the following:
•   You are an Elecraft employee and your conscience is causing you to be a whistle blower and are credible.
•   You are an industrial spy as the design info is proprietary and has not, to my knowledge, been released and may be credible.  (You did use the term 'we know what MOSFETS...')
•   You work for a competitor and are trying to discredit Elecraft's efforts (see above).
•   You are clueless and just like to get a rise out of people and see your comments on line.
I am not actually trying to slam you as, if you are right, I don't wish to waste my money on poorly made equipment.  So fire away - my email is listed if you don't want to post.


You can ask me anything EE related and I can answer you.  My credentials are my knowledge and I will match my knowledge with you any time. 

You can be in denial all you want about Elecraft's crappy TX performance but it is true.  I have nothing against the company Elecraft except that like most other Ham radio companies, they are safely in the CB amp category with their transmitters.  Pointing this out is NOT an attempt to hurt Elecraft's business.  Most of the technically incompetent appliance operators we call Hams today don't know the difference and don't care, so Elecraft is going to be OK.

AE7WC, please give your SSN so we can verify your "personal" credentials.  Maybe you are an Elecraft employee dispatched to the group to defend the company?



I find it irritating that you won't give your call sign as it is easy then to blast away from anonymity (otherwise known in blog-space as a 'troll').  That being said, I don't want to pi$$ away $1000 when I could get something better.  What amp would you suggest?  Yes, I am a humble new HAM "appliance operator" with the intention of becoming more (CW, DIY radios and antennas, etc.).
Logged
KE7TMA
Member

Posts: 471




Ignore
« Reply #27 on: July 05, 2013, 03:21:43 PM »

Elecraft has never specified IMD for their products so we might have to wait until the ARRL reviews the KXPA-100 to know the actual IMD performance.

What might we predict based on Elecraft's track record? Two older products, the K3/10 and K3/100, have 3rd order IMD of -27 and -28 dB respectively. Two never products, the KX3 and the KXPA-500, have 3rd order IMD of -36 dB and -34 dB respectively. It appears that Elecraft has cleaned up their act, so to speak, and we might expect the KXPA-100 to be a clean amp.




Boy, that is a real stretch! Are you being paid by Elecraft to say this on eHam?

Are you actually claiming that his figures are inaccurate?
Logged
TANAKASAN
Member

Posts: 933




Ignore
« Reply #28 on: July 13, 2013, 03:32:55 AM »

The KXPA-500 is very clean and a quick test on one of the units confirmed the IMD spec of -34dB. The main reason for this is probably the built in 50V power supply because, as I said elsewhere on EHam, homebrew amplifiers that run on 28V and 48V/50V have been found in my tests to have lower IMD.

The moment I saw the 12V Powerpole connector on the back of the KXPA-100 my heart sank, Elecraft really dropped the ball on this one. I am of course willing to be proved wrong and I await an IMD test with interest.

Tanakasan

Logged
KE7TMA
Member

Posts: 471




Ignore
« Reply #29 on: July 17, 2013, 09:17:59 PM »

The KXPA-500 is very clean and a quick test on one of the units confirmed the IMD spec of -34dB. The main reason for this is probably the built in 50V power supply because, as I said elsewhere on EHam, homebrew amplifiers that run on 28V and 48V/50V have been found in my tests to have lower IMD.

The moment I saw the 12V Powerpole connector on the back of the KXPA-100 my heart sank, Elecraft really dropped the ball on this one. I am of course willing to be proved wrong and I await an IMD test with interest.

Tanakasan



You, Zenki, and SWL2002 all seem to have identical views on a wide variety of topics.  Perhaps you three should get together.

Anyway what kind of portable equipment runs on 50v?  Nothing in the amateur world.  Maybe some military gear but the receivers in those rigs are garbage from what I have seen.

Is there any principle in electronic theory that proves that 12v amplifiers are unreliable or splattery?  I haven't come across any theories that vindicate your assertion.
Logged
Pages: Prev 1 [2] 3 Next   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!