[Elecraft] Separate AGC settings for RTTY?

2014-11-03 Thread Jan Pettersson

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[Elecraft] [KX3] RX I/Q signals "reversed" on 2m

2014-11-03 Thread Matt VK2RQ
That's interesting, the RX I/Q signal lines appear to be "reversed" when 
operating the KX3 on 2m.

I guess this makes sense, if you consider the 2m module is using the "x4" 
output of the KX3's local oscillator, so that if you tune to 144MHz for 
example, the LO would be running at 48MHz, so that in the 2m module the 144Mhz 
signal would be mixed with a 4x48=192MHz signal. This would place the "USB" 
image at 192+144=336MHz, which is discarded, and then place the "LSB" image 
(192-144) at 48MHz, which is then downshifted to 0MHz by the 48MHz LO in the 
main receiver. Because the LSB image is the one that is used, the frequencies 
appear "reversed" when you look at then on the I/Q output. By swapping the I & 
Q signals, you can effectively "reverse" the frequencies a second time, and get 
a normal display on the waterfall. Of course, this is taken care of 
automatically in the PX3 :-)

73,
Matt VK2RQ
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Re: [Elecraft] KPA500 fault at H44KW (no pwr high SWR)

2014-11-03 Thread wa9fvp
I just found out that there's a Rework Kit E850607 for the KPA500.  It
replaces Q5 (a FET)  with a Darlington Transistor.  The kit also includes a
Zener Diode, resistors and capacitors and includes changes to the 12 meter
LP filter.  The kit applies to board REV D9 or earlier.



-
Jack WA9FVP

Sent from my TRS-80 :-)
--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KPA500-fault-at-H44KW-no-pwr-high-SWR-tp7570161p7594371.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] [KX3] RX I/Q signals "reversed" on 2m

2014-11-03 Thread Joe Subich, W4TV



Of course, this is taken care of automatically in the PX3 :-)


Many of the better "SDR Console" software packages include a
configuration option to "swap I/Q above 'N' MHz" ... works for
KX3 on 144 MHz and K3 on 50 MHz.

73,

  ... Joe, W4TV


On 2014-11-03 9:41 AM, Matt VK2RQ wrote:

That's interesting, the RX I/Q signal lines appear to be "reversed"
when operating the KX3 on 2m.

I guess this makes sense, if you consider the 2m module is using the
"x4" output of the KX3's local oscillator, so that if you tune to
144MHz for example, the LO would be running at 48MHz, so that in the
2m module the 144Mhz signal would be mixed with a 4x48=192MHz signal.
This would place the "USB" image at 192+144=336MHz, which is
discarded, and then place the "LSB" image (192-144) at 48MHz, which
is then downshifted to 0MHz by the 48MHz LO in the main receiver.
Because the LSB image is the one that is used, the frequencies appear
"reversed" when you look at then on the I/Q output. By swapping the I
& Q signals, you can effectively "reverse" the frequencies a second
time, and get a normal display on the waterfall. Of course, this is
taken care of automatically in the PX3 :-)

73, Matt VK2RQ
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[Elecraft] KPA500 is always warmed up

2014-11-03 Thread Barry Boothe via Elecraft
I bet this has been asked and answered before.  My new amp works perfectly. 
Another engineering masterpiece from Elecraft. Is it  normal for the amp to 
be warm all the time whether it is on or off? Mine feels  warm on the 
bottom and shows about 32C when everything else in the shack is 24C  to 26C. 
Thanks, Barry, W9UCW
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Re: [Elecraft] KPA500 is always warmed up

2014-11-03 Thread mcduffie
On Mon, 3 Nov 2014 19:04:27 -0500, Barry Boothe via Elecraft wrote:

> Is it  normal for the amp to 
> be warm all the time whether it is on or off? Mine feels  warm on the 
> bottom and shows about 32C when everything else in the shack is 24C  to 26C. 

I have not turned mine over to see how warm it is with the front panel power
switch off.  Remember, it is normally left in the position of having the rear
switch turned on.  There is a power supply that may be heating your bottom hot
spot, but I'll let the official word come from Wayne or someone else on that.  I
can't turn mine over to see, since it is hooked up to many cables.

On the other hand, I've checked mine many times on the sides, front, and top to
see if there are any warm spots.  I use an IR thermometer, so it is extremely
easy and fast.  Mine is always room temp unless I'm "heating it up".  I also
have a thermometer in the exhaust fan "cage" to keep an eye on that temperature,
and I monitor temp on the amp's digital readout at all times I'm using it.

If there is any condition or location (other than the bottom) that I can measure
for you, spell out the conditions and I'll do it.  I use it daily.

Gary
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Re: [Elecraft] 4W/G3ZEM

2014-11-03 Thread Gary K9GS

Hello Bob,

I would like to thank YOU for your trip to 4W.  I was down to my last 4 
zones needed on 80M and putting you in the log recently took that number 
down to three zones left.  Fantastic job with an HF9V for sure!  You had 
a very good signal on 80M.


The best part was a confirmation on LoTW within a few hours of working you.

Now if I could talk you into going to zone 22,23, and 24???


On 11/2/2014 12:59 AM, Bob Henderson wrote:

I want to acknowledge the superb performance of my K3, KPA500, KAT500 combo
along with my little HF9V while away on my solo 'man in a tent' trip to
Timor-Leste.

The nominal 220V supply in T-L rapidly ranges +/-20% when it is available
at all  This would be a challenge for any equipment.  Aside from occasional
60V high/low faults reported on the KPA500 everything worked faultlessly.

System integration was perfect providing for instant pre-tuned band changes
day and night.  15,200 Qs over 10 days CW only.  I'm sure to have worked a
lot of Elecrafters.

K3, KPA500, KAT500 really is the combo of choice for fly-in fly-out
DX-peditioning.

Thanks to Elecraft for some first class equipment.

73 Bob, 5B4AGN
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--
73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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Re: [Elecraft] KX3 Questions

2014-11-03 Thread Phil Wheeler
Nice site, Jim. Thanks for the link. Very nice 
instructions on the amp, too.


Phil W7OX

On 11/1/14, 7:58 AM, James Bennett wrote:

Another option for a tad more power is to "roll you own". W6PQL had an article 
in the May 2013 issue of QST for building an 80 watt out all mode 2 meter amp:

http://www.w6pql.com/2_meter_80w_all_mode_amplifier.htm

He has a ton of other home brew projects on his web site. I built that amp this 
past spring and it works great. I made my own cabinet, but bought the board 
from him. The parts were obtained through various online retailers. It works 
great - I've used mine, driven by 5 watts from my K3, on CW, SSB, and FM.

Just a thought.

73, Jim / W6JHB
KX3# 5539, K3# 4359

On   Saturday, Nov 1, 2014, at  Saturday, 7:49 AM, Dale Parfitt 
 wrote:


One could always buy a Mitsubishi brick and put  it in a case. RF parts or eBay:
eBay item number:121444258503

$45 for a 30W out module fully assembled. Or $58 for 60W out. 50mW drive. Add 
an LPF, bypass switching  and you are done.
Normally set up for FM, they can be run linear by adjusting the gate voltage.
Dale W4OP

- Original Message - From: "Phil Hystad" 
To: 
Cc: 
Sent: Saturday, November 01, 2014 9:56 AM
Subject: Re: [Elecraft] KX3 Questions



Jim -- Definitely agree on the need for an amp with KX3 2-meter.  I have 
posted, more than once, my Elecraft wish list item of a nice 2-meter amp. It 
just seems like something that would be easy for them to throw together.  
Otherwise, there are a few 2-meter amps I have been looking at but so far I 
have not needed one (mostly since my home brew 2-meter yagi is not anywhere 
near done yet).

73, phil, K7PEH


On Oct 31, 2014, at 11:06 PM, Jim Brown  wrote:

On 10/31/2014 9:19 AM, Phil Hystad wrote:

But, if you are wanting to do weak signal work with CW, SSB, etc. then the 2M 
option is a very good cost item and worth the small increment of $.

Yes, IF you can find a good amp that drives with the 3W or so that the 2M 
transverter produces. There was an '80s vintage Mirage 2W In, 150W out brick 
that did that, and I have one (but there's no way I'd sell it). :)

73, Jim K9YC


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[Elecraft] OK... I give up on what is happening...

2014-11-03 Thread David Cole
Hello all,

I have spent a few months trying to fathom this and finally have given
up and need your help...

When in CW mode, and running MixW the following is observed:

1.  All bands below 18 MHz, if I move the tuning dial, the frequency
display of MixW moves as expected, and any signals stay locked under the
frequency, and move with the display.

2.  All bands 18 and over, if I move the dial, the frequency display of
MixW moves as expected, and any signals move in the opposite direction
of the display, and do NOT stay under the frequency shown, they move, as
if the signal is changing frequency.  

Is there some per band mode for which sideband CW is using?  Am I on th
right rack here?



-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



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Re: [Elecraft] OK... I give up on what is happening...

2014-11-03 Thread David Cole
This is on a K3
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Mon, 2014-11-03 at 18:53 -0800, David Cole wrote:
> Hello all,
> 
> I have spent a few months trying to fathom this and finally have given
> up and need your help...
> 
> When in CW mode, and running MixW the following is observed:
> 
> 1.  All bands below 18 MHz, if I move the tuning dial, the frequency
> display of MixW moves as expected, and any signals stay locked under the
> frequency, and move with the display.
> 
> 2.  All bands 18 and over, if I move the dial, the frequency display of
> MixW moves as expected, and any signals move in the opposite direction
> of the display, and do NOT stay under the frequency shown, they move, as
> if the signal is changing frequency.  
> 
> Is there some per band mode for which sideband CW is using?  Am I on th
> right rack here?
> 
> 
> 

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Re: [Elecraft] OK... I give up on what is happening...

2014-11-03 Thread Michael Eberle
You may have to put it in CW-R mode to get on the opposite sideband.  Although 
I would think one would use digital soundcard programs in DATA-A mode.


Sent from my U.S. Cellular® Smartphone

 Original message From: David Cole 
 Date:11/03/2014  8:53 PM  (GMT-06:00) To: 
elecraft@mailman.qth.net Subject: [Elecraft] OK...  I give up on 
what is happening... 
Hello all,

I have spent a few months trying to fathom this and finally have given
up and need your help...

When in CW mode, and running MixW the following is observed:

1.  All bands below 18 MHz, if I move the tuning dial, the frequency
display of MixW moves as expected, and any signals stay locked under the
frequency, and move with the display.

2.  All bands 18 and over, if I move the dial, the frequency display of
MixW moves as expected, and any signals move in the opposite direction
of the display, and do NOT stay under the frequency shown, they move, as
if the signal is changing frequency.  

Is there some per band mode for which sideband CW is using?  Am I on th
right rack here?



-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



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Re: [Elecraft] OK... I give up on what is happening...

2014-11-03 Thread David Cole
Hi,
I have tried that...  Same thing happens, the radio acts exactly the
same...  It is some interaction with MixW I think...  If I load FLDigi,
I get the same action, only all the time...  I have disabled the
bands.ini in MixW to test, and that seems to make no difference...  
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Mon, 2014-11-03 at 21:21 -0600, Michael Eberle wrote:
> You may have to put it in CW-R mode to get on the opposite sideband.
>  Although I would think one would use digital soundcard programs in
> DATA-A mode.
> 
> 
> 
> 
> Sent from my U.S. Cellular® Smartphone
> 
> 
>  Original message 
> From: David Cole 
> Date:11/03/2014 8:53 PM (GMT-06:00) 
> To: elecraft@mailman.qth.net 
> Subject: [Elecraft] OK... I give up on what is happening... 
> 
> 
> Hello all,
> 
> I have spent a few months trying to fathom this and finally have given
> up and need your help...
> 
> When in CW mode, and running MixW the following is observed:
> 
> 1.  All bands below 18 MHz, if I move the tuning dial, the frequency
> display of MixW moves as expected, and any signals stay locked under
> the
> frequency, and move with the display.
> 
> 2.  All bands 18 and over, if I move the dial, the frequency display
> of
> MixW moves as expected, and any signals move in the opposite direction
> of the display, and do NOT stay under the frequency shown, they move,
> as
> if the signal is changing frequency.  
> 
> Is there some per band mode for which sideband CW is using?  Am I on
> th
> right rack here?
> 
> 
> 
> -- 
> Thanks and 73's,
> For equipment, and software setups and reviews see:
> www.nk7z.net
> for MixW support see;
> http://groups.yahoo.com/neo/groups/mixw/info
> for Dopplergram information see:
> http://groups.yahoo.com/neo/groups/dopplergram/info
> for MM-SSTV see:
> http://groups.yahoo.com/neo/groups/MM-SSTV/info
> 
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to mtebe...@mchsi.com

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[Elecraft] P3 Span limits in Fixed Tune mode

2014-11-03 Thread Fred Jensen
I generally operate CW at 20KHz spans, with the bottom edge of the 
screen at an even 20 KHz boundary.  Seems to work well, occasionally 
I'll find it different, not sure why.


In SS CW, I noticed that my lower span boundary was often 5 KHz up from 
the normal value ... such as 14025.  It seemed to happen more when I was 
using the N1MM Band Map and clicking on spots, which sends frequency 
change commands to the K3.


This is not a big deal, I just sort of like the bottom of the band to be 
at the bottom of the P3 span, but I can't find any other reason to 
complain except that I'm a retired engineer ... you know how we are, 
just ask my wife.


This P3 effect doesn't seem to happen any other time, but it was pretty 
regular when the laptop was sending frequency commands to the K3.


Just curious, maybe someone else has noticed this ... or maybe not and 
my mind made it all up.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2015 Cal QSO Party 3-4 Oct 2015
- www.cqp.org

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[Elecraft] Elecraft SSB net results for 11/2/2014

2014-11-03 Thread Phil Shepard
Here is the net report for the Elecraft SSB net from November 2, 2014.  We had 
26 participants.  

Station NameQTH Rig S/N

KM4IK   Ian GA  K3  281
W0CZKen ND  K3  457
NC0JW   Jim CO  KX3 1356
KC0XT   David   CA  KX3 6980
W2RWA   DickNY  K3  2603
AD5IJ   Howard  OR  KX3 5178QRP
KF5IMA  Bruce   MS  K2  3575
K1NWBrian   RI  K3  4974
KE7FSD  Al  AZ  K3  8532
KD0MOA  JohnCO  KX3 3560
KN5LJohnTX  K3  4448
KC9LIF  KentIL  K2  6896
QRP
N6LEW   Lew CA  K3  3805
QRP
KC5RY   George  TX  K3  5208
KU4UW   Ray NM  KX3 6751
QRP
ZL1PWD  Peter   NZ  K3  139
KF5YBE  Lee TX  K3  7771
KD7BCF  Wes OR  KX3 7071
W7QHD   KurtAZ  K2  1538
N6JWJohnCA  K3  936
AE6JV   BillCA  K3  6299
KI6FH   Rod AZ  IC706   
WB5JJA  Ray OK  K3  7877
KA0NCR  Arnie   NE  KX3 161
NM7MBob OR  KX3 3924
NS7PPhilOR  K3  1826

73,
Phil, NS7P
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Re: [Elecraft] P3 Span limits in Fixed Tune mode

2014-11-03 Thread Alan

Hi Fred,

When the K3 VFO A frequency gets outside of the P3 displayed span, the 
P3 center frequency may change to keep VFO A on-screen, depending on the 
setting of the FixMode menu setting.  If you set FixMode to "Static" 
then the displayed range should not change no matter what the K3 is doing.


Alan N1AL



On 11/03/2014 08:49 PM, Fred Jensen wrote:
I generally operate CW at 20KHz spans, with the bottom edge of the 
screen at an even 20 KHz boundary.  Seems to work well, occasionally 
I'll find it different, not sure why.


In SS CW, I noticed that my lower span boundary was often 5 KHz up 
from the normal value ... such as 14025.  It seemed to happen more 
when I was using the N1MM Band Map and clicking on spots, which sends 
frequency change commands to the K3.


This is not a big deal, I just sort of like the bottom of the band to 
be at the bottom of the P3 span, but I can't find any other reason to 
complain except that I'm a retired engineer ... you know how we are, 
just ask my wife.


This P3 effect doesn't seem to happen any other time, but it was 
pretty regular when the laptop was sending frequency commands to the K3.


Just curious, maybe someone else has noticed this ... or maybe not and 
my mind made it all up.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2015 Cal QSO Party 3-4 Oct 2015
- www.cqp.org

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Re: [Elecraft] 4W/G3ZEM

2014-11-03 Thread Igor Sokolov

Hi Gary,
I will be one of the  3 operators from 8Q7DV (zone 22) during CQWW CW. We 
are leaving from home on the 22nd of Nov and returning on the 4th of Dec so 
there will be time before and after the contest. . Sure enough all the rigs 
will be by Elecraft (actually a pair of K3 and possibly one KX3 for QRP)


73, Igor UA9CDC
- Original Message - 
From: "Gary K9GS" 

To: 
Sent: Tuesday, November 04, 2014 8:03 AM
Subject: Re: [Elecraft] 4W/G3ZEM



Hello Bob,

I would like to thank YOU for your trip to 4W.  I was down to my last 4 
zones needed on 80M and putting you in the log recently took that number 
down to three zones left.  Fantastic job with an HF9V for sure!  You had a 
very good signal on 80M.


The best part was a confirmation on LoTW within a few hours of working 
you.


Now if I could talk you into going to zone 22,23, and 24???


On 11/2/2014 12:59 AM, Bob Henderson wrote:
I want to acknowledge the superb performance of my K3, KPA500, KAT500 
combo

along with my little HF9V while away on my solo 'man in a tent' trip to
Timor-Leste.

The nominal 220V supply in T-L rapidly ranges +/-20% when it is available
at all  This would be a challenge for any equipment.  Aside from 
occasional

60V high/low faults reported on the KPA500 everything worked faultlessly.

System integration was perfect providing for instant pre-tuned band 
changes
day and night.  15,200 Qs over 10 days CW only.  I'm sure to have worked 
a

lot of Elecrafters.

K3, KPA500, KAT500 really is the combo of choice for fly-in fly-out
DX-peditioning.

Thanks to Elecraft for some first class equipment.

73 Bob, 5B4AGN
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--
73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org



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Re: [Elecraft] OK... I give up on what is happening...

2014-11-03 Thread Pierfrancesco Caci
> "David" == David Cole  writes:


David> Hi,
David> I have tried that...  Same thing happens, the radio acts exactly the
David> same...  It is some interaction with MixW I think...  If I
David> load FLDigi, 
David> I get the same action, only all the time...  I have disabled the
David> bands.ini in MixW to test, and that seems to make no difference...  

Dave,
the K3 uses LSB for CW on all bands. 
In FLDigi there's a configuration knob to let you deal with that, under
Configure->Misc->Sweet Spot.  This will make the waterfall move in the
correct direction when you tune, and it will make the QSY button tune
your radio correctly.  
Please see if this fixes your problem in FLDigi. I don't know MixW, but
it it changes direction from a certain band up, it may be configured to
invert the sidebands like some old radios used to do. 
Other thing to make sure is that FLDigi (and possibly MixW) gets the
mode correctly. Sometimes the K3 spews info too quickly and you get
garbage in the Mode dropdown of FLDigi. 

Pf


-- 
Pierfrancesco Caci, ik5pvx
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