There's no need to argue about 1500W or 500W. The 1500W will bring more
signal across to the other receiver.
And whether you are succesfull with 500W or 1500W depends on how you
use it.
The question is: why did Elecraft decide to bring a 500W PA and not the
1500W version that was on display
Hi All:
Alan's reply makes the most sense of all.
For the casual DXer / casual contester, speed and frequency agility can make
as big of a difference as having brute force behind your signal.
Consider the example of being able to quickly change bands to follow a
multiplier or rare DX station
Working stations with the minimal power required is the end game at least that
is what i remember from the tests I took last year. Hihi.
Personally, I really enjoy working stations low power (with 20W or less). It
gives me tremendous satisfaction when I work a DX station with QRP. Like wow I
It's been stated here that the difference between 1500W and 500W is
mostly unimportant. Most views are going from about 100 w to 500 W.
Here is another view based up the past 15 days of operation with a
KPA-500. The previously 1500 watts was used with identical antennas.
I chase DX and
It's all relative to how to spend what dollars one has. For me, if money was no
concern, I might have a mega KW Alpha sitting on my desk. But I don't have that
kind of money, nor the additional dollars to run a dedicated 240V line to the
shack. With the dollars I don't spend on a 1,500 watt
A power ratio of 3 (1500 watts versus 500 watts) is just under 5 db.
Check out these audio files (CW, though ... not SSB) I generated to see
what kind of impact that can have for readability of signals near the
noise threshold.
http://www.ab7e.com/weak_signal/mdd.html
73,
Dave AB7E
On
Interesting experiment Dave. I think that kind of test is valid for VHF
operation. But on HF it is very rare to hear a signal at a constant
level like that.
Normally signal strength varies considerably from moment to moment due
to fading. Even if the average signal level is right at the noise
Those files had me reaching for my APF button!
I completely agree about every dB counting, either near the noise level or in a
competitive situation.
On 1/17/2012 3:52 PM, David Gilbert wrote:
A power ratio of 3 (1500 watts versus 500 watts) is just under 5 db.
Check out these audio files
Keep in mind that it all adds up. If you get 2 db more from your beam, and 3 db
from going
from 500 to 1000 watts (say), and maybe a db by replacing your old coax, etc.,
that's 6 db
-- a huge advantage.
On 1/17/2012 4:15 PM, Alan Bloom wrote:
Interesting experiment Dave. I think that kind
I'm fairly positive that everyone has their own story. For perhaps 9-12
months prior to purchasing the KPA500, I ran my 1,200W amp at 500W to
see if this was going to be a good deal. I decided it was, got the KPA
and sold the amp. I'm not sorry.
I'm probably somewhat more casual in contests
Very true. But even 6 dB would not make a big difference for a
rag-chewer or a casual contester. Even for a fairly serious DXer, being
in the right place at the right time and having superior operating
skills are more important than an S-unit of signal strength.
The place where the best
I'm hoping they skip the middle man and go right for the KPA-1500. Folks
considering a KW might have been persuaded by the fine reviews and excellent
integration to jump into the KPA-500. Those desiring the legal limit are
probably taking a wait and see approach.
73,
Mike K2MK
alsopb wrote
It isn't really a question of what's more important. Of course if you don't
call on the
right frequency you won't get through even with 5 kW. It's about what happens
other
things being equal in poor conditions, near the noise level or in a pileup.
On 1/17/2012 4:30 PM, Alan Bloom wrote:
Very
[mailto:elecraft-boun...@mailman.qth.net]On Behalf Of Alan Bloom
Sent: Tuesday, January 17, 2012 6:30 PM
To: Vic K2VCO
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 (another view)
Very true. But even 6 dB would not make a big difference for a
rag-chewer or a casual contester. Even
On Tue, Jan 17, 2012 at 6:28 PM, Fred Jensen k6...@foothill.net wrote:
I've put a little $$ into antennas, which I'm
pretty sure has made a much bigger difference...
=
Agreed (I usually agree with Fred). Propagation here was super
frustrating today. Lotsa band noise, and weak
At the moment, I am spending money on my little beginners antenna farm. I am
upgrading my K4KIO Hex beam (and keeping the hex beam for vacation property) to
a Steppir 3 element antenna for my small lot station. I haven't bought the
KPA500 yet but I am seriously considering transitioning from
it can easily work at some 600w SSB without any difficulties.
TNX 73,
Johnny VR2XMC
從︰ Vic K2VCO k2vco@gmail.com
收件人︰ Elecraft Reflector elecraft@mailman.qth.net
傳送日期︰ 2012年01月18日 (週三) 8:53 AM
主題︰ Re: [Elecraft] KPA500 (another view)
It isn't really
從︰ Keith Heimbold ag...@hotmail.com
收件人︰ Mike K2MK k...@comcast.net
副本(CC)︰ elecraft@mailman.qth.net elecraft@mailman.qth.net
傳送日期︰ 2012年01月18日 (週三) 9:05 AM
主題︰ Re: [Elecraft] KPA500 (another view)
At the moment, I am spending money on my little beginners antenna farm. I am
The other point about desktop db is that repair is a heck of a lot easier.
No antenna parties, climbing and dealing with the elements.
Having an amp like a KPA1500 which one can fix helps keep those db's on
the air.
I've seen many ham stations with inoperative antennas that eventually
lead to
The only real problem with amp over antennas is that an amp only helps in one
direction. Better antennas help both ways :)
And what about alligator stations? You know, big mouth, little ears?
In my getting to be 25 years on the air, I've never had an amp. Never seen a
need for one. Maybe it's
Hi Johnny,
My only complaint about the Quadra is the pretty lame internal autotuner and if
I sold it I could probably have enough to buy the KPA500 and the KAT500, and
maybe have a little left over to put towards a legal limit 6m tube amp. Not
sure that math adds up. I am a 6m enthusiast but
There are a great many Hams whose budget and circumstances does NOT allow a
240V service or huge antenna. They may be renters, living under HOA
restrictions, or simply have a very small lot. For them, stepping up from
100 watts to 500 watts - about the most one can squeeze from a 120 V mains
Call me a contrarian, but my biggest thrills have always come from
working Europe with 3 watts to an attic dipole and other under-the-
radar efforts. I'd probably get stage fright if you put me in front of
a KW :)
But that's where Eric comes in. A little ying, a little yang.
73,
Wayne
N6KR
Heck, I will be ecstatic when I manage to find the time to finish my
KPA100, other K2 accessories, and trim my pair of 20/15 dipoles and
10m loop!
(living in medium density housing with as long as we can't see it
HOA restrictions by the harbor in Santa Cruz, which isn't so bad,
really)
73,
On 1/17/2012 9:57 PM, Wayne Burdick wrote:qbd sd6r4 sww99i8t]
Call me a contrarian, but my biggest thrills have always come from
working Europe with 3 watts to an attic dipole and other under-the-
radar efforts. I'd probably get stage fright if you put me in front of
a KW :)
But that's
*Mike,
Where and when have we even heard of such a beast in the offing?
I have not heard/read anything about the development or redesign of the
prototype KPA-1500 or for the KPA-800 with auto-tuner inbuilt for that
matter.
All postings have been met so far with a deafening silence from the
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