If you look at sheet 1 of the RF Board schematic, you will see that Key Out is
controlled by 7R, not 7T. I'm pretty sure 7T is not the complement of 7R, as
there are separate MCU outputs for them, T5 and R5. This, no doubt, has to do
with timing issues. 7R controls numerous switching
You don't have to disable anything. Follow all the leads and you will see
that:
1) VOX is a firmware state only from tap vs. hold on a button shared with
band down.
2) PTT IN is routed to the CPU via an import path only without exporting
any effect around the CPU directly to the physical post
No. 7R - which drives Key Out - is used to control receive functions.
You *CAN NOT* disable that, as would be required to disable Key Out,
without leaving receive functions *ON* which would defeat other
functions (like muting) when operating the key.
Will this subject please die? This is the
Joe This is the way Wayne designed the
J oe radio.
Fine, if this cannot be corrected, some explanation need to be given in owners
manual or specs, so people know what to expect. As it is stated now, it is not
clear.
Joe If you don't like it, get a YaeComWood and stop fussing
Joe
Fine, if this cannot be corrected, some explanation need to be
given in owners manual or specs, so people know what to expect.
As it is stated now, it is not clear.
What's not clear? Key Out is the logical or of the key input
(straight key, internal keyer, PTT and VOX). A low on any of
Joe What's not clear? Key Out is the logical or of the key input
Joe (straight key, internal keyer, PTT and VOX). A low on any of
Joe those inputs/internally generated signals reflect as a low on
Joe the Key Out whether the K3 is actually generating RF or not
Joe (e.g. Test mode or CW in
On Mon, Mar 14, 2011 at 3:01 PM, Joe Subich, W4TV li...@subich.com wrote:
Key Out is the logical or of the key input
(straight key, internal keyer, PTT and VOX).
WRONG. To use your terms and convention, as currently coded in firmware...
KEY OUT in CW mode is the logical or of straight key,
KEY OUT in CW mode is the logical or of straight key, internal
keyer and PTT. Turning on VOX neither asserts nor gates KEY OUT
No, when any of the (input) signals I named - straight key, internal
keyer CW, PTT or VOX (note VOX is an input *not* a control state) -
is active, Key Out is
Joe, I do not understand what you mean by VOX in your assertion below.
There is no VOX steady state input from anywhere. There is no VOX jack or
ACC pin named VOX. There is a steady state VOX segment in the LCD display,
but that is driven from the CPU across the LCDSCL LCDDI LCDCE LCDMODE
this anymore.
73,
Igor, N1YX
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy Olinger K2AV
Sent: Monday, March 14, 2011 5:52 PM
To: Joe Subich, W4TV
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 transmit/amplifier relay
, 2011 5:52 PM
To: Joe Subich, W4TV
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 transmit/amplifier relay
Joe, I do not understand what you mean by VOX in your assertion below.
There is no VOX steady state input from anywhere. There is no VOX jack or
ACC pin named VOX. There is a steady
Ralph, VE7XF, took the words right from my own mouth. This situation is
unique, extremely annoying, and I have not been able to get used to this
anomaly after several years. Using my spare FT-1000D is a big relief in
that particular area. I have asked for a solution to this for years,
but
I am not so sure that this cannot be accomplished in firmware.
And I completely get what this causes if one has a complex pre-K3 setup
switching tower-top preamps, etc., whose primary state-change signal comes
from
Only the CPU knows that VOX is on or off. There is no VOX lead. Band
down and
Guy,
Don't forget that KEY OUT is driven directly by the 7R signal in the K3
- that signal reaches and controls all the circuits that are turned on
for receive.
So it cannot be accomplished entirely in firmware without an
accompanying hardware change.
Any internal hardware change would
It may NOT be a good idea to gate the KEY_OUT with the foot switch because of
timing issues. If you release the foot switch while transmitting, the
amplifier relay, especially a fast QSK relay, could release before the K3 RF
output decays, resulting in hot-switching of the relay. KEY_OUT
...While staying in the CW receive mode I operate the paddle to adjust
speed and monitor level.
The transmit relay activates and the amplifier relay also is activated...
I don't care what justification others come up with - my other radios don't
do this, and I find it extremely annoying. Always
Most of my operating is on CW. While staying in the CW receive mode I
operate the paddle to adjust speed and monitor level. The transmit relay
activates and the amplifier relay also is activated. Being in the CW
receive mode there is no RF output but the relay clanking is annoying.
Neither VOX
I think this is normal, and it's annoying. I don't know of any other
transceiver that behaves this way.
73,
Scott K9MA
On Mar 11, 2011, at 2:40 PM, Sy Botan wrote:
Most of my operating is on CW. While staying in the CW receive mode I
operate the paddle to adjust speed and monitor
It seems to me that switching your amp to standby while doing your adjustments
would solve the problem?
73s Jim
On Mar 11, 2011, at 2:47 PM, Scott Ellington wrote:
I think this is normal, and it's annoying. I don't know of any other
transceiver that behaves this way.
73,
Scott K9MA
@mailman.qth.net
Subject: Re: [Elecraft] K3 transmit/amplifier relay
Most of my operating is on CW. While staying in the CW receive mode I
operate the paddle to adjust speed and monitor level. The
transmit relay
activates and the amplifier relay also is activated. Being in the CW
receive mode
Why would you need to do this? Adjust it while you actually transmit then
this is not an issue.
Most of my operating is on CW. While staying in the CW receive mode I
operate the paddle to adjust speed and monitor level. The transmit relay
activates and the amplifier relay also is activated.
Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Sy Botan
Sent: Saturday, 12 March 2011 9:41 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 transmit/amplifier relay
Most of my operating is on CW. While staying in the CW
Not necessarily. The PTT Out line may control more than just the internal
amplifier relays. For example, if one uses a separate receiving antenna, there
should be a relay which disconnects it from the receiver on transmit. The
amplifier output may also be switched by an external relay.
Turn VOX off ?
On 11/03/2011 21:26, Scott Ellington wrote:
Not necessarily. The PTT Out line may control more than just the internal
amplifier relays. For example, if one uses a separate receiving antenna,
there should be a relay which disconnects it from the receiver on transmit.
The
I reported this problem awhile ago. I've got no answer... I guess this is just
the way it is...
Igor, N1YX
- Original Message -
From: Sy Botan szppho...@gmail.com
To: elecraft@mailman.qth.net
Sent: Friday, March 11, 2011 3:40:36 PM
Subject: Re: [Elecraft] K3 transmit
Enter TEST mode. Adjust keyer. Leave TEST mode.
73 - Steve WB6RSE
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In all fairness, I now see why the K3 behaves as it does, and that it's not a
simple firmware mod to fix it. KEY_OUT is derived from 7R, which switches all
sorts of stuff between RX and TX mode. If 7R were disabled in PTT RX mode,
probably even the sidetone wouldn't work. I don't even see a
TX TEST will still activate KEYOUT.
This has been discussed at length long before, both on the Firmware
Field Tester reflector and this email reflector. TX TEST is a mode
where no RF is generated, but the entire Transmit Setup in your station
is acivated (for test purposes). If indeed, one
Actually there is a situation where it is very desirable for me. But I
understand why most people would prefer to not have this happen. I use this
feature for QSK testing, including external QSK switches, for the amp. It
is very useful because all timing is exactly the same as if RF were being
Chuck,
Your testing is *exactly* what TX TEST is supposed to accomplish.
Those with VHF sequencers have an even more complex set of conditions
that can be tested and affirmed good or bad with TX TEST.
The fact that RF is not generated makes it also useful for things like
setting your keying
On 3/11/2011 6:37 PM, Don Wilhelm wrote:
Chuck,
Your testing is *exactly* what TX TEST is supposed to accomplish.
Those with VHF sequencers have an even more complex set of conditions
that can be tested and affirmed good or bad with TX TEST.
This thread reminds me of the need for a fix I
Wilhelm
Sent: Friday, March 11, 2011 8:51 PM
To: wb6r...@mac.com
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 transmit/amplifier relay
TX TEST will still activate KEYOUT.
This has been discussed at length long before, both on the Firmware
Field Tester reflector and this email reflector. TX
Hello,
I need some information how can I hook up my new K3 to either ICOM PW1 or
Heathkit SB1000 Amplifier.
What do I need to get my K3 work with my AMP?
73
George KE6TE
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Home:
George,
The K3 keys up to 200 volts POSITIVE via the Key Out jack in the back. If
your amps require negative voltage to be keyed you will need an outboard
relay.
You really do not need ALC, but if you want to use it, the signal is on the
accessory jack. Be sure your K3 has the negative ALC
BerichtI think a lot of folk would be interested, perhaps Ron could elaborate.
David
G3UNA
- Original Message -
From: Arie Kleingeld PA3A
To: 'Ron D'Eau Claire' ; elecraft@mailman.qth.net
Sent: Monday, November 10, 2008 7:11 AM
Subject: RE: [Elecraft] Rambling on
Same
Hello,
See http://wilcoxengineering.com/K3sn40.aspx ... I added a couple more
pictures after installing the KPA3 power amplifier today. Got good IMD
report on an extended QSO today while testing it out on PSK31.
Alan
Alan D. Wilcox, W3DVX
570-321-1516
http://WilcoxEngineering.com
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