incorporated?
We need to know who needs to order them
and who does not.
Thanks and 73
Bob N6WG
- Original Message - From: wayne burdick [EMAIL PROTECTED]
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Thursday, November 13, 2008 10:40 AM
Subject: [Elecraft] K3 AF Upgrade Kit
Speaker amplifier modification:
In the AF stage upgrade instruction page 1 it is mentioned:
“This mod changes RFC 47, 100 µH radio frequency choke that supplies power
to the K3 audio amplifier. The
original choke has a resistance of about 1.5 ohms. This resistance is high
enough to cause some
is the 100
uH choke.
http://www.bourns.com/pdfs/5800_series.pdf
Paul, W9AC
- Original Message -
From: hb9wi [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Thursday, November 20, 2008 1:51 PM
Subject: Re: [Elecraft] K3 AF Upgrade Kit (for speaker amplifier and LINE
OUTs
Kit (for speaker amplifier and LINE
OUTs)
With minor circuit changes, both the K3's speaker amplifier and line
outputs can provide lower IMD (intermodulation distortion) at higher
signal levels. We've been testing these changes for a couple of
months, and have already phased them
Hi,
I am a little confused as to exactly what is affected by the choke mod (the
document only mentions speakers):
Internal speaker?
External speakers?
Front panel headphones?
Rear panel headphones?
I am asking because I use headphones 99% of the time (currently front
connected, but I am
I am a little confused as to exactly what is affected by the choke mod (the
document only mentions speakers):
The document is accurate.
It means the speaker amplifier, which is used to drive the internal
speaker and the external speaker jack. Not the headphones or LINE OUT,
just the
With minor circuit changes, both the K3's speaker amplifier and line
outputs can provide lower IMD (intermodulation distortion) at higher
signal levels. We've been testing these changes for a couple of months,
and have already phased them into production.
These changes can easily be made to
, November 13, 2008 10:40 AM
Subject: [Elecraft] K3 AF Upgrade Kit (for speaker amplifier and LINE OUTs)
With minor circuit changes, both the K3's speaker amplifier and line
outputs can provide lower IMD (intermodulation distortion) at higher
signal levels. We've been testing these changes
]
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Thursday, November 13, 2008 10:40 AM
Subject: [Elecraft] K3 AF Upgrade Kit (for speaker amplifier and LINE OUTs)
With minor circuit changes, both the K3's speaker amplifier and line
outputs can provide lower IMD (intermodulation distortion) at higher
wayne burdick wrote:
SPEAKER AMP: The mod kit includes a very low-resistance RF choke for
use at RFC47
73,
Wayne
N6KR
What is the value? / SM2EKM
Could this be homebrewed? Core, turns, wire? / LZ1VB
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wayne burdick wrote:
SPEAKER AMP: The mod kit includes a very low-resistance RF choke for
use at RFC47
73,
Wayne
N6KR
What is the value? / SM2EKM
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