Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread Ron Manfredi 
The writer of the manual has a sense of humor.   You can download the 
manual, and on the last page of the "Troubleshooting" section the last 
problem listed is:  "Smoke comes from unit," and the solution, "Replace 
the smoke...only kidding, return to dealer."





On 5/28/2017 7:15 PM, pkhjr via Elecraft wrote:

Just ran across this the other day.  Anyone know have any experience with
this amp?
http://www.ebay.com/itm/Xiegu-XPA125-QRP-ALC-Antenna-Tuner-Function-125W-HF-Ham-Radio-Power-Amplifier-US-/132206081348?hash=item1ec818b544:g:cVQAAOSw9OFZKOkD
  
73 Tex

ka5y



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Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread Fred Jensen 
It's Chinese, YMMV. The BOGO offer seems strange for ham radio 
equipment.  Of course, you could always put two into a combiner and get 
250 W from a 10 W exciter. [:-)  It's in the US, no specslisted, 
5W-->125 W is 13.97 dB gain.  Doesn't say it runs on nominal 12VDC.  I 
have no experience and don't intend to get any -- Caveat Emptor.


73,

Fred ("Skip") K6DGW
Sparks NV USA
Washoe County DM09dn

On 5/28/2017 4:15 PM, pkhjr via Elecraft wrote:

Just ran across this the other day.  Anyone know have any experience with
this amp?
http://www.ebay.com/itm/Xiegu-XPA125-QRP-ALC-Antenna-Tuner-Function-125W-HF-Ham-Radio-Power-Amplifier-US-/132206081348?hash=item1ec818b544:g:cVQAAOSw9OFZKOkD
  
73 Tex

ka5y



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Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread pkhjr via Elecraft 
Just ran across this the other day.  Anyone know have any experience with
this amp?
http://www.ebay.com/itm/Xiegu-XPA125-QRP-ALC-Antenna-Tuner-Function-125W-HF-Ham-Radio-Power-Amplifier-US-/132206081348?hash=item1ec818b544:g:cVQAAOSw9OFZKOkD
 
73 Tex
ka5y



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Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread Walter Underwood 
When I priced them, the Hardrock was just about half the cost for half the 
power. I got the KXPA100.

The KXPA100 kit is assembly, no soldering. One of the design goals was for 
installation as a remote PA for mobile use. Install the KXPA next to the 
antenna and keep the KX3 by you.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On May 28, 2017, at 11:44 AM, Tom Francis, W1TEF  wrote:
> 
> Phil,
> 
> The Hardrock 50 has an atu - I don't know if the toroids are pre-wound or not 
> - if not, that's an
> issue for me.
> 
> Actually, I'm kind of in the reverse situation - I want to keep my KX2/3, but 
> get rid of my FT-450D
> - which is a nice radio, but it's bigger than I can use mobile.
> 
> All suggestions are welcome and you certainly gave me something to think 
> about.
> 
> Thanks.
> 
> Tom, W1TEF
> Lexington, SC
> 
> On 5/28/2017 2:04 PM, Phil Hystad wrote:
>> I looked into that very question a few months ago (February)…
>> 
>> My comments:
>> 
>> 1.  I don’t think Hardrock-50 has an auto-tuner so in pricing comparison, 
>> compare with
>> a separate vendors auto-tuner (as good as Elecraft’s) if you are assuming 
>> buying the KXPA100 with
>> auto tuner.
>> 
>> 2.  Hardrock-50 is half (or, less than half?) the output power of KXPA100 
>> (of course, you know this).
>> 
>> 3.  Include your own labor time in $ for building the kit?  I do this for 
>> everything I do to determine
>> if I want to do myself or pay to have it done.  For many of my projects, my 
>> time is a lot more valuable than
>> the cost of somebody else’s time.  For example, as a plumber my own labor 
>> costs are thousands of dollars
>> per hour.
>> 
>> Well, these are the three key items that I looked into in comparing leaving 
>> out the very likely quality
>> difference between a full soldering kit built by me versus a kit from 
>> Elecraft.
>> 
>> I chose the KXPA100+autotuner as a result of my evaluation.
>> 
>> But, the rest of the story.
>> 
>> I didn’t buy the KXPA100.  My reason for 100 watts was to see about getting 
>> a 100-watt capable
>> backup rig and could also be used in portable operations (with adaquate DC 
>> power of course).
>> 
>> I made a wild decision.  Instead of getting an amp for my KX3.  I sold my 
>> KX3!  In its place I
>> bought a new Icom IC-7300 and it is light-weight and could be portable (not 
>> mobile) as well.
>> 
>> But, I still loved QRP portable ops too so I bought a KX2 to replace my KX3. 
>>  I also sold other
>> equipment that was merely collecting dust to also put together the funds to 
>> buy the KX2 as
>> well as a second KAT500 to work with the IC-7300 (since the 7300s internal 
>> tuner is not good
>> enough for all of my antennas in use on all of my bands of interest).
>> 
>> Net cost was  minus $130.   That is, I had a net gain after buying the 
>> IC-7300, the KX2,
>> and the KAT500 by selling the KX3, and a mobile HF rig, a mobile VHF/UHF 
>> rig, and a R-75
>> receiver.
>> 
>> 73, phil, K7PEH
>> 
>> 
>>> On May 28, 2017, at 10:50 AM, Tom Francis, W1TEF  
>>> wrote:
>>> 
>>> Greetings,
>>> 
>>> I'm looking for a little practical advice about linear amplification for 
>>> the KX2/3 (I have both).
>>> 
>>> Hardrock-50 or KXPA100.
>>> 
>>> Essentially, it would be used mobile, although taking it out the car and 
>>> using it portable is
>>> possible.
>>> 
>>> So any information from users of these two amps will be greatly 
>>> appreciated.  Also, as the
>>> Hardrock 50 is a kit, how hard is it to build for something with finger 
>>> nephropathy?
>>> 
>>> Thanks for any info.
>>> 
>>> Very best regards,
>>> 
>>> Tom, W1TEF
>>> Lexington, SC
>>> 
>>> 
>>> 
>>> 
>>> __
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>>> Message delivered to phys...@mac.com
>> 
> 
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Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread Tom Francis, W1TEF 

Phil,

The Hardrock 50 has an atu - I don't know if the toroids are pre-wound 
or not - if not, that's an

issue for me.

Actually, I'm kind of in the reverse situation - I want to keep my 
KX2/3, but get rid of my FT-450D

- which is a nice radio, but it's bigger than I can use mobile.

All suggestions are welcome and you certainly gave me something to think 
about.


Thanks.

Tom, W1TEF
Lexington, SC

On 5/28/2017 2:04 PM, Phil Hystad wrote:

I looked into that very question a few months ago (February)…

My comments:

1.  I don’t think Hardrock-50 has an auto-tuner so in pricing comparison, 
compare with
a separate vendors auto-tuner (as good as Elecraft’s) if you are assuming 
buying the KXPA100 with
auto tuner.

2.  Hardrock-50 is half (or, less than half?) the output power of KXPA100 (of 
course, you know this).

3.  Include your own labor time in $ for building the kit?  I do this for 
everything I do to determine
if I want to do myself or pay to have it done.  For many of my projects, my 
time is a lot more valuable than
the cost of somebody else’s time.  For example, as a plumber my own labor costs 
are thousands of dollars
per hour.

Well, these are the three key items that I looked into in comparing leaving out 
the very likely quality
difference between a full soldering kit built by me versus a kit from Elecraft.

I chose the KXPA100+autotuner as a result of my evaluation.

But, the rest of the story.

I didn’t buy the KXPA100.  My reason for 100 watts was to see about getting a 
100-watt capable
backup rig and could also be used in portable operations (with adaquate DC 
power of course).

I made a wild decision.  Instead of getting an amp for my KX3.  I sold my KX3!  
In its place I
bought a new Icom IC-7300 and it is light-weight and could be portable (not 
mobile) as well.

But, I still loved QRP portable ops too so I bought a KX2 to replace my KX3.  I 
also sold other
equipment that was merely collecting dust to also put together the funds to buy 
the KX2 as
well as a second KAT500 to work with the IC-7300 (since the 7300s internal 
tuner is not good
enough for all of my antennas in use on all of my bands of interest).

Net cost was  minus $130.   That is, I had a net gain after buying the IC-7300, 
the KX2,
and the KAT500 by selling the KX3, and a mobile HF rig, a mobile VHF/UHF rig, 
and a R-75
receiver.

73, phil, K7PEH



On May 28, 2017, at 10:50 AM, Tom Francis, W1TEF  wrote:

Greetings,

I'm looking for a little practical advice about linear amplification for the 
KX2/3 (I have both).

Hardrock-50 or KXPA100.

Essentially, it would be used mobile, although taking it out the car and using 
it portable is
possible.

So any information from users of these two amps will be greatly appreciated.  
Also, as the
Hardrock 50 is a kit, how hard is it to build for something with finger 
nephropathy?

Thanks for any info.

Very best regards,

Tom, W1TEF
Lexington, SC




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Re: [Elecraft] KX2/3 Amplifiers

2017-05-28 Thread Phil Hystad 
I looked into that very question a few months ago (February)…

My comments:  

1.  I don’t think Hardrock-50 has an auto-tuner so in pricing comparison, 
compare with
a separate vendors auto-tuner (as good as Elecraft’s) if you are assuming 
buying the KXPA100 with
auto tuner.

2.  Hardrock-50 is half (or, less than half?) the output power of KXPA100 (of 
course, you know this).

3.  Include your own labor time in $ for building the kit?  I do this for 
everything I do to determine
if I want to do myself or pay to have it done.  For many of my projects, my 
time is a lot more valuable than
the cost of somebody else’s time.  For example, as a plumber my own labor costs 
are thousands of dollars
per hour.

Well, these are the three key items that I looked into in comparing leaving out 
the very likely quality
difference between a full soldering kit built by me versus a kit from Elecraft.

I chose the KXPA100+autotuner as a result of my evaluation.  

But, the rest of the story.

I didn’t buy the KXPA100.  My reason for 100 watts was to see about getting a 
100-watt capable
backup rig and could also be used in portable operations (with adaquate DC 
power of course).  

I made a wild decision.  Instead of getting an amp for my KX3.  I sold my KX3!  
In its place I
bought a new Icom IC-7300 and it is light-weight and could be portable (not 
mobile) as well.

But, I still loved QRP portable ops too so I bought a KX2 to replace my KX3.  I 
also sold other
equipment that was merely collecting dust to also put together the funds to buy 
the KX2 as
well as a second KAT500 to work with the IC-7300 (since the 7300s internal 
tuner is not good
enough for all of my antennas in use on all of my bands of interest).

Net cost was  minus $130.   That is, I had a net gain after buying the IC-7300, 
the KX2,
and the KAT500 by selling the KX3, and a mobile HF rig, a mobile VHF/UHF rig, 
and a R-75
receiver.

73, phil, K7PEH


> On May 28, 2017, at 10:50 AM, Tom Francis, W1TEF  wrote:
> 
> Greetings,
> 
> I'm looking for a little practical advice about linear amplification for the 
> KX2/3 (I have both).
> 
> Hardrock-50 or KXPA100.
> 
> Essentially, it would be used mobile, although taking it out the car and 
> using it portable is
> possible.
> 
> So any information from users of these two amps will be greatly appreciated.  
> Also, as the
> Hardrock 50 is a kit, how hard is it to build for something with finger 
> nephropathy?
> 
> Thanks for any info.
> 
> Very best regards,
> 
> Tom, W1TEF
> Lexington, SC
> 
> 
> 
> 
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> Please help support this email list: http://www.qsl.net/donate.html
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