Who says there is nothing new in amplifiers?
PA is not battery driven, so 12V headroom is not a question.
Look what is presented in ADT 200A transceiver.
http://www.adat.ch/index_e.html
This rig use adaptive predistorsion. New amplifier could
use it too with feedback to K3 ???
And have 3rd IMD mu
]
[mailto:[EMAIL PROTECTED] On Behalf Of OE5CSP-Chris
Sent: Friday, June 27, 2008 4:08 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Power Amplifier Jumper Block
I almost finished my K3 tonight, but now there´s a problem. The assembly
manual on page 54 says, that the Power Amplifier Jumper
Sent: Friday, June 27, 2008 4:08 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Power Amplifier Jumper Block
I almost finished my K3 tonight, but now there´s a problem. The assembly
manual on page 54 says, that the Power Amplifier Jumper Block is already
installed.Unfortunately there is no ju
I almost finished my K3 tonight, but now there´s a problem. The assembly
manual on page 54 says, that the Power Amplifier Jumper Block is already
installed.Unfortunately there is no jumper installed in my K3 and I can´t
find it anywhere.
I´d like to install the KPA 100 tomorrow, but I can´t go on
On Sun, Nov 19, 2006 at 08:07:59AM -0600, Mike Short wrote:
> Mine is not as elegant, but is cheaper. I am building a 140W amp kit from
> Communication-Concepts, and using
> The filter assembly kit from k5oor. For serious QRO I am working on a legal
I'm considering building the same 140W amp kit.
L
Richard haendel wrote:
For those who don't want to wait for the Elecraft linear amplifiers, here
is an option that I pursued. I bought a Tokyo Hi-power amplifier the HL
1.2KFS that is rated at 750 watts output with typically 60 watts drive. But
here is what I did, I asked Nobuki San, the chief
selection
and filtering. I recommend them.
73,
Bill - WA5PB
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Richard haendel
Sent: Sunday, November 19, 2006 7:57 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Power amplifier for K2
For those who don&#
ction.
Both will drive to full output with the basic K2.
Mike
AI4NS
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Richard haendel
Sent: Sunday, November 19, 2006 7:57 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Power amplifier for K2
For thos
For those who don't want to wait for the Elecraft linear amplifiers, here
is an option that I pursued. I bought a Tokyo Hi-power amplifier the HL
1.2KFS that is rated at 750 watts output with typically 60 watts drive. But
here is what I did, I asked Nobuki San, the chief engineer, to set up the
I agree with several who voiced their opinion about what power level the new
amplifier should be. IMHO 400 watts is plenty. I made my own 400 watt PA
driven by my dependable K2 S/N 40xx. It works fine. With a 2 element switched
beam (non rotating) up at 30 ft. I can work everything I can he
It's that 50 volt 20 amp supply that's a killer!
Doug
W6JD
- Original Message -
From: "Tom Mc" <[EMAIL PROTECTED]>
To: "Richard Haendel" <[EMAIL PROTECTED]>; "Elecraft List"
Sent: Thursday, January 06, 2005 6:58 PM
Subject: Re: [El
pop (poor choice of words?) about right for the MRF-150's?
Tom
WB2QDG
K2 1103
-Original Message-
From: Richard Haendel <[EMAIL PROTECTED]>
To: elecraft@mailman.qth.net
Date: Thursday, January 06, 2005 9:53 AM
Subject: [Elecraft] Power Amplifier for K2
For those who think life is to
For those who think life is too short to do QRP all the time, here is what I
did. I made an amplifier similar to the amp in Communication Concepts web
page, specifically the Motorola EB-104 Amplifier (kit!) that uses 4 MRF-150
transistors.
See www.communication-concepts.com/eb104.htm. I use 48 vo
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