After reading all the posts about the improvements that can be made now
(and in the near future) to the K3, I find it difficult to decide
between a new K3S or to add the upgrades as they become available. I
have not set a list of improvement vs. costs to pen and paper yet ().
I am not a
I am using two K3's in my remote system. If I want to upgrade the syn boards,
do I need to do the control radio as well as the remote radio?
Also the remote radio has the sub receiver, which I use very infrequently,
remotely. Do I still need to do both boards in that rig? Thanks.
John, N0IJ
John,
Since the K3 that is operating in your local shack is only operating as
a 'terminal head', you will not find any improvement by upgrading its
synthesizer boards.
Yes, you need to change both boards if your K3 has the KRX3 installed -
it will not work right with mixed synth boards.
I
5) The KAT3A includes a relay which bypasses the tuner when
using a matched antenna. I have no idea how much extra power
will get to the antenna due to the relay, but it seems hard to
imagine it will be very many dB. Regardless, I'm glad that when
I ordered the KAT3, they shipped a KAT3A. I
OK, my misunderstanding ...
73,
... Joe, W4TV
On 2015-07-10 7:18 PM, Wayne Burdick wrote:
1) modified bias in the speaker amplifier *driver* (not the amp
itself) for improved linearity.
The power amp itself has in fact been updated. And there's a new AF driver
stage.
Wayne
This
Remember the cheap interface isn't the most inexpensive interface.
It's just a bit underdesigned (trying to be polite here).
On Fri, 10 Jul 2015, Joe Subich, W4TV wrote:
The other change is the KIO3B which provides the option of an
internal USB interface for radio control and USB CODEC (sound
I would guess. the matched tuner loss vs. the bypass tuner would be
in the order of 0.1 dB or so. At 100 watts that is about 2.5 watts
loss. So with the tuner bypassed, 100 watts to the feed line and with
the matched tuner active would be about 97.5 watts to the feed line.
73 Bob, K4TAX
Thanks for that very graphic display at the link
below, Dave.
Phil W7OX
On 7/10/15 6:18 AM, David Cole wrote:
Bill,
For your usage, I would not even worry about replacing the K3 with a
K3S. Just upgrade the synthesizer, and that is about all you will need
for Rag Chewing, etc... Now, if you
Bill,
For your usage, I would not even worry about replacing the K3 with a
K3S. Just upgrade the synthesizer, and that is about all you will need
for Rag Chewing, etc... Now, if you decide to start hunting DX, etc,
then you might start to worry...
I have a comparison between the old and new
Bill,
You are entirely correct, the K3 'as-is' is a great transceiver. Add the
new synthesizer(s) and you will have most of the performance improvement
available.
Look at the K3S FAQ for a good deal of additional information when
considering whether to upgrade or switch to the K3S - or to
Although not owning one...yet...K3SIf one wishes to
improve their station and they have a K3spend money on your
antenna system. Even if it means selling your real estate and moving to
a better location.
73 Bob, K4TAX
On 7/10/2015 1:26 PM, Poul Erik Karlshøj (PKA)
Bill
I'd say Oliver is right. The basic K3 is so good that you will not really
notice the difference for your use. You wont even have any problem if you start
chase difficult DX. You will never have to give up copying a rare CW DX station
even in difficult situations just because you didnt have
Aside from the new RF board, which includes a couple of extra attenuator
steps and a lower noise floor, many of the critical K3S upgrades are
available for the K3. To acquire a K3S that is configured similarly to
my K3, I'd have to spend almost $4600, and to do all that currently
available
On Fri,7/10/2015 6:07 AM, Bill wrote:
I am not a DXer or contester - merely a rag chewer on 75 and 40.
For your operating interests, the only thing I would do is upgrade to
the new synth board. I consider that 90% of the difference between the
K3 and K3S. I did that, and because 6M is
Bill,
for your kind of use leave it as it is and save the money, buy shoes for
your wifey, etc. ;-) I doubt you will see any difference ragchewing with
the K3 and any of the new options.
73, Olli - DH8BQA
Contest, DX radio projects: http://www.dh8bqa.de
Am 10.07.2015 um 15:07 schrieb
I agree with Jim - for the same reasons.
After updating the synthesizer(s) and replacing the KVX3/KXV3A
with the KXV3B, if one updates the KBPF3 general coverage
bandpass filter board(s) and adds the regulator bypass capacitors,
there are only four remaining performance upgrades between an
And the KIO3B will be available for K3 owners, should they wish to make
that change.
There is no doubt that the K3S is an improved radio, but whether those
improvements are worth the associated costs in selling a K3 and buying a
K3S is open for debate, given that many of the most important
Right on, Bob! And perhaps moving to a less noisy
QTH for some :-)
73, Phil W7OX
On 7/10/15 11:37 AM, Bob McGraw - K4TAX wrote:
Although not owning
one...yet...K3SIf one wishes to
improve their station and they have a
K3spend money on your antenna system.
Even if
1) modified bias in the speaker amplifier *driver* (not the amp
itself) for improved linearity.
The power amp itself has in fact been updated. And there's a new AF driver
stage.
Wayne
This does not affect the power
output or frequency response.
2) 5/10/15 dB stepping on the *main
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