Hi all,
If I key ACC pin 4 (PTT IN) and enable ACC pin 7 (TX inhibit active),
will the KEY OUT T/R relay activate.
In essence,KEY OUT= (ACC4) AND (ACC7)
Or, KEY OUT=(ACC4)?
73 de Kai/SM0RCL
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You could always try setting the noise gate to the point where the beeps are
not heard.
73 Ian
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SysOp GB7MBC HB9DRV-9 DX Clusters
Member RSGB, GQRP 9838, FISTS 14077 | K3 #455
http://www.m0scg.org.uk
On 7 October 2010 13:12, Sam Morgan k5oai@gmail.com wrote:
I got
Hi Don
I have two K2's one with kat100 fitted one without. I wanted to fit the kat100
into the second unit. The amp works but I do not get receive audio
I have looked into the menu's and can not see one that tells the receive path
to go via the kat100 unit. Any idears?
Bill G4OAX
Bill,
Please explain what you mean by with kat100 fitted. The KAT100 is an
external option in its own enclosure and connects the the K2 (or KPA100)
AUX I/O connector via a cable. The receive (and transmit) path between
the K2 and the KAT100 is through a coaxial cable.
Once you explain
Howdy Don,
A display, that shows all the segments one time or another, depending on the
state or mode, i.e. in cw normal, the bottow segment of the c is missing..
but it shows in u, has me confused. The soldering has been rechecked, under
a 30x glass, on the front panel and control board,
Kai,
Yes - all keying functions should operate but no RF will be transmitted
if TX INH is asserted from an external input.
73,
Don W3FPR
On 10/8/2010 3:12 AM, Kai Rämö wrote:
Hi all,
If I key ACC pin 4 (PTT IN) and enable ACC pin 7 (TX inhibit active),
will the KEY OUT T/R relay
I like to listen to a receiver with the rf gain set to just below
antenna atmospheric noise and AGC on - and not raising the rf gain when
it is switched on.
My K3 is srl 46xx and the only way I get the quiet background I desire
is to turn the AGC off. This necessitates having the AF limiter
Dale,
The K2 microprocessor sends serial data to the display controller (IDAT
and ICLK signals), and the display controller lights the corresponding
segments on the LCD.
So a missing segment on the c mode indicator can be either a missing
bit in the data from the microprocessor ( CB U6) or
Interesting. Many of us have wanted just the opposite. The ability to
hold off AGC action until even high levels than the THR value allows
now. Perhaps in the future
73 de Brian/K3KO
On 10/8/2010 12:22, John Chappell G3XRJ wrote:
I like to listen to a receiver with the rf gain set to
I had an opportunity to visit a very sophisticated lab on Wednesday where
they were testing a complex software/hardware system whose implementation
requires an almost perfect detection rate of positive events while achieving
almost zero false alarms. (What else is new?) This is a public safety
Hi
I already have the 250Hz, 400Hz and 2.7 KHz filters fitted to both
receivers. I plan to add 2.1KHz or 1.8kHz filters some time I in the future.
In the nearer future I intend adding the 2m module to my K3. Since this will
be used for local traffic I understand that I need to add an FM filter
Bill,
You can use the FM filter to receive AM, but not for transmit. To
transmit AM, you must have the 6 kHz filter, so you will have to
sacrifice one filter.
73,
Don W3FPR
On 10/8/2010 9:11 AM, Bill Henderson wrote:
Hi
I already have the 250Hz, 400Hz and 2.7 KHz filters fitted to both
At least make it optional if you do. If I get something screwed up hung
transmitting into open air or a closed switch, I want it to turn off NOW,
not after a delay.
73, de Jim KG0KP
- Original Message -
From: Richard rich...@aroundwood.com
To: Dan Atchison n...@aol.com
Cc:
Don
I thought that that might be the case.
I can live without TX in AM (hi)
Vy 73
Bill
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I would like to add my opinion to those who have already written about
a Power Off delay on the K3. I use an ICOM 910H for VHF/UHF coverage
which has this feature, and it is a nuisance, though minor.
My K3's power switch is ergonomically located in such a way that it
would seem almost
John, I've noticed the same thing: the AGC does seem to make the receiver - in
the absence of signals - roar quite a bit with my early (#770) K3.
I've attributed a lot of the noise to computer and suburban hash, but listening
with my old Drake receiver shows things much quieter. Noise
Steve,
The solution is to RAISE the threshold. I run mine at 008 which is the
max. I also run the slope at 002 which makes the K3 AGC response more
like my K2 - weak signals sound weaker than stronger signals. You can
alter the slope without running into the situation where the K3 sounds
Ok, now I've done it...
I had resigned myself to living with the AGC off because I can't stand the
sound of the audio with it on in CW mode (I've come close to selling it
because of that many times), but with all this chatter about the AGC
settings, I got in there and messed around again (still
You guys are headed in the wrong direction ... crank the AGC threshold
UP and you will come closer to getting what you want. I have mine set
to 008 and if it would go higher I would set it there.
73,
Dave AB7E
On 10/8/2010 7:25 AM, Steve Wedge wrote:
John, I've noticed the same thing:
My first thought on comments about noise on a receiver is that the radio
they are comparing it to just can't hear as well.
73, Jim
- Original Message -
From: Steve Wedge w1es1...@earthlink.net
To: John Chappell G3XRJ j...@g3xrj.com; Elecraft@mailman.qth.net
Sent: Friday, October 08,
On 10/8/2010 9:30 AM, Don Wilhelm wrote:
You can use the FM filter to receive AM, but not for transmit. To
transmit AM, you must have the 6 kHz filter, so you will have to
sacrifice one filter.
Repeating one of my complaints about the K3 there is no reason
that the FM filter should
Don,
What I should have mentioned in my initial post was that the recording
was made at midday on 80m and the noise from the antenna was only s1.
For a given setting of the rf gain, increasing the threshold to 8
increases the noise, as can be heard in the recording.
John G3XRJ
The solution
Can someone explain why this restriction exists?
*Why* can't you transmit through a 2.1 filter for example. *Why* is it
precluded?
I don't want a 2.7 or a 2.8 filter tying up one of the too few filter slots.
W5OV
-Original Message-
From: elecraft-boun...@mailman.qth.net
I agree, Bob, and wouldn't 2.1 kc make our transmit signal even cleaner??
I'm afraid I don't see the status quo either.
73,
Don, WB5HAK
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In fact, 2.1 was one of the original possibilities for the TX filter
and was removed.
73, doug
From: Don Cunningham wb5...@martineer.net
Date: Fri, 8 Oct 2010 11:31:04 -0500
I agree, Bob, and wouldn't 2.1 kc make our transmit signal even cleaner??
I'm afraid I don't see the status
Bob,
I could change all of the transmit filter bandwidth restrictions in
firmware, and this is on my list. But it would be a complex change,
and I have to weigh it against many competing firmware change
requests. I assume the presence of a 2.7 or 2.8 kHz filter in all of
the
Wayne,
Would you mind answering the question of transmit purity. Would the change
from 2.8 to 2.1 make our transmissions any cleaner?? If not, it would not
be worth all the work you would need to do. Thanks to listening to our
requests. That is what makes Elecraft so good, other
John,
I find that true too - but ONLY under the following conditions:
1 - the preamp is turned on
2 - the attenuator is off
3 - I set the K3 to hear only noise (no signal)
If I set the preamp off and attenuator on (normal operation with my 80
meter antenna) and then set the AF gain to listen
Yes please do!!
Jim
On 2010-10-08 18:56, Wayne Burdick wrote:
Bob,
I could change all of the transmit filter bandwidth restrictions in
firmware, and this is on my list. But it would be a complex change,
and I have to weigh it against many competing firmware change
requests. I
Re:
...the only way I get the quiet background I desire is to turn the AGC off..
and
I had resigned myself to living with the AGC off because I can't stand
the sound of the audio with it on in CW mode
(I've come close to selling it because of that many times),
AHA!!!
Whenever I've posted a
is any one out there with 6khz fliter on essb ?
E.P
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If this change is made, we should be prepared for
complaints about Elecraft transmitters being wide,
splattering, etc. The present filter imitations serve
to protect some of us from both unintended and intentional
excessive bandwidth.
Elecraft's excellent reputation for clean transmitters
I had resigned myself to living with the AGC off because I can't stand
the sound of the audio with it on in CW mode..
I have similar perceptions in CW mode and generally leave AGC turned off.
The only problem I've encountered living in Florida is that on the 40m-20M
bands, the 100 kHz/sec sweep
I have thought about John's wish for more AGC control. The K3 has a lot of
gain, I wonder if greater attenuator control would be more useful. I would
like to rotate in another 10 or 20 dB attenuation at times when operating
lower bands. I would guess my that wishes would require hardware
I would concur with Don. I do not use the preamp unless the noise level is
very low. I use the attenuator on load bands or when there is a substantial
noise level. I use AGC as I don't want to damage my hearing accidentally.
Bill
K9YEQ
John,
I find that true too - but ONLY under the
I seem to have trouble convincing some to raise the threshold to
combat the noisy effect. Please read all below carefully, and I believe
I can offer some explanation.
Let's study what the AGC SLP and AGC THR settings do and try to relate
them to the perception that the K3 is noisy.
IF --
Is this K2, K3, or valid for both?
Leigh/WA5ZNU
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Leigh,
It is the K3 - there is no TX INH on the K2.
73,
Don W3FPR
On 10/8/2010 2:48 PM, Leigh L. Klotz Jr WA5ZNU wrote:
Is this K2, K3, or valid for both?
Leigh/WA5ZNU
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The present filter imitations serve to protect some of us
from both unintended and intentional excessive bandwidth.
AM/ESSB/SSB bandwidth is determined by the DSP modulation
not the roofing filter bandwidth. This can easily be seen
in the use of the 6 KHz filter for ESSB where the occupied
Don,
I tried your recommendations and it makes the setup sound better than where
I had it. The threshold increase makes quite a listening difference for me
personally. Thank you for sharing.
Bill
K9YEQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
Similarly, I assume a 6 kHz filter for TX in AM and ESSB modes.
That's a problematic assumption. If one has 2.7 or 2.8 plus a
narrow SSB filter (1.5/1.8) a normal CW/RTTY filter and a narrow
CW filter there is simply no way to support both FM (4.5 KHz DSB
AM RX) and normal AM filters. Since
Thanks for clarifying the maximum achievable
transmitted bandwidth issue, Joe. I was aware
of this, but it had retreated to the nether regions
of my old poop's brain. (;-)
73! Ken Kopp - K0PP
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Don,
That's a good explanation. Hopefully those folks will read it however
many times it takes for them to understand that lowering the threshold
is the opposite of what they want to do. I suspect that MANY of the
complaints about the K3 being a noisy rig are due to similar
P3/AGC Issue:
I have an intermittent issue that occurs when jumping frequency with the 'tap'
on the freq select knob on the P3 - This happens fairly often - it disables my
AGC - resulting in a blast of audio in my cans - till I get the AGC set again.
I think I have the latest firmware download
P3/AGC Issue:
I have an intermittent issue that occurs when jumping frequency with the
'tap' on the freq select knob on the P3 - This happens fairly often - it
disables my AGC - resulting in a blast of audio in my cans - till I get
the AGC set again. I think I have the latest firmware
John Chappell G3XRJ wrote:
Don,
What I should have mentioned in my initial post was that the recording
was made at midday on 80m and the noise from the antenna was only s1.
For a given setting of the rf gain, increasing the threshold to 8
increases the noise, as can be heard in the
I just installed Version 4.12, everything went as it should, I
power-cycled the K3. In CONFIG:TX DVR, I set it to IND. Holding the
CMP/PWR gives me the usual monitor tone [I'm on CW] adjustable by the
knob. Holding it a second time turns the tone off but leaves the MON 60
n the display.
Just went through your setup. I have 4.12.
Doing a MON hold with TX DVR set to IND brings up MON tone which
behaves normally. HOWEVER, doing a HOLD MON again changes nothing. A
*tap* on CMP/PWR/MON turns off the monitor tone, and returns the
display to normal. If I reset TX DVR to nor, and
This is RIDICULOUS!!
Do you guys read the manual? Based on all of the whining posts the last few
days, it's apparent that there are a lot K3 and P3 owners who've never bothered
to open the freakin' book. Agc, noise, this that, good grief. IT isn't just
about the K3 -- it's about how to
In an effort to help those who perceive their K3 as noisy, and for
those who are not certain their AGC slope and threshold settings are not
right for their operation, I have added a page to my website.
Go to www.w3fpr.com and click on the link in the left column referring
to K3 noise and AGC
AMEN!
Jim, W4ATK
On Oct 8, 2010, at 6:29 PM, Grant Youngman wrote:
This is RIDICULOUS!!
Do you guys read the manual? Based on all of the whining posts the
last few days, it's apparent that there are a lot K3 and P3 owners
who've never bothered to open the freakin' book. Agc, noise,
NAQCC 6th Anniversary Special Event Stations Operation.
Tom/WY3H (NAQCC President) and John/K3WWP (NAQCC VP) would like to invite all
operators to help the North American QRP CW Club (NAQCC) celebrate its Sixth
Anniversary.
How?
By working their ten special event stations N1A, N2A,
You will have to choose which filter is used ALL THE TIME for SSB TX.
You COULD currently define the 2.1 filter as 2.7 and set an offset to
center it properly. BUT it will not be cleaner as you suppose. The
narrower filters have more envelope delay near the skirts, and that
creates distortion
I would like to fix the P3 display - so it doesn't travel with the VFO
tuning
Bruce W8RA
Hi Bruce:
I believe this is on the to do list.
However, you can simulate very much of what you want by using VFO B (with or
without the Sub-Rx).
If you have the sub-receiver, here is what you do:
1. Tap
Hi List:
There is currently another RTTY contest on the go this weekend.
Has there been any progress on the reported FSK D 'bug' that
causes RX audio shift when 'chaining' memories on TX? [See,
a previous entry from me: K3 FSK D Mode: possible 'bug'?]
Regards and 73
John, N6JW
P.S. I
Let's study what the AGC SLP and AGC THR settings do
and try to relate them to the perception that the K3 is noisy.
Tnx, Don.
I read your website item, tried your AGC settings, and even fooled around
with them a bit, listening to a busy night on 40m CW. I didn't realize that
I could hear the
Ralph,
I am pleased to hear that I could be of help to you. Enjoy your K3.
73,
Don W3FPR
On 10/8/2010 11:58 PM, Ralph Parker wrote:
Let's study what the AGC SLP and AGC THR settings do
and try to relate them to the perception that the K3 is noisy.
Tnx, Don.
I read your website item,
Wayne,
Am I correct in my understanding that the reason the 2.1 is not currently
allowed is simply a firmware issue?
If it is indeed technically OK to use the 2.1 instead of the 2.7 or 2.8, yes
- I would like that option to be available.
I was surprised that after removing the 2.7 and
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