date:20140818


Emory,

A display of 99.9 SWR normally indicates either a short or an open circuit.
It has to be somewhere between the wattmeter and the dummy load - in 
other words, it *has* to be in the ATU to make any sense to me.

It is strange that you see this only below 5 MHz - are the other bands OK?

73,
Don W3FPR

On 8/18/2014 8:10 AM, ejk...@gmail.com wrote:

This is my second post on this problem, got no replies on first one, still 
looking for help for transmitting below 5 Mhz and getting very high SWR.
I also connected a dummy load directly to the KX3, same problem.
Using the tune button and by-passing the ATU get SWR readings of 99.9 with 
dummy load on freqs below 5 Mhz?
So it probably is not the ATU.
When installing the 2 meter module I had to move the inductors, the 2 mtr 
antenna connector was touching one inductor, fit was very tight.
I have rechecked 2 meter module install nothing obvious.
Thanks for help.  73
Emory  WM3M



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Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?

2014-08-18 Thread Joe Subich, W4TV




At present the K3 has... let's call it an oversight... in the way
that it memorizes data sub-modes. It correctly memorizes the
last-used data sub-mode on each band, but not the bandwidth setting
appropriate to that sub-mode. Instead, the bandwidth settings for
*all* data sub-modes on *all* bands are overwritten by the settings
for whichever sub-mode was most recently used on *any* band. This is
often quite inappropriate, and inconvenient for anyone whose
interests cover a range of data sub-modes.


That problem needs to be fixed in the K3/KX3 firmware before moving
on to upgrade to automate the display settings of the P3 and the
PX3.


Agreed - and one of those user interface issues to which I referred
earlier in this thread.  DATA A and AFSK A/FSK D need separate default
bandwidth (2.8 or 4 KHz for DATA A, 500 Hz for AFSK A/FSK D) and the
last used BW/FC values need to be stored per sub-mode/band.

73,

   ... Joe, W4TV


On 2014-08-18 10:10 AM, Ian White wrote:

I would agree with that... but first, there is another point that needs
to be rationalized in the K3 (and, I presume, the KX3 also).

DATA is not a single mode - it is only a folder name for a collection
of different data sub-modes. Many of those sub-modes require quite
different settings for the transceiver bandwidth and center frequency;
and that is equally true about the optimum bandwidths for a visual
display.

At present the K3 has... let's call it an oversight... in the way that
it memorizes data sub-modes. It correctly memorizes the last-used data
sub-mode on each band, but not the bandwidth setting appropriate to that
sub-mode. Instead, the bandwidth settings for *all* data sub-modes on
*all* bands are overwritten by the settings for whichever sub-mode was
most recently used on *any* band. This is often quite inappropriate, and
inconvenient for anyone whose interests cover a range of data sub-modes.


That problem needs to be fixed in the K3/KX3 firmware before moving on
to upgrade to automate the display settings of the P3 and the PX3.


73 from Ian GM3SEK



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of

Joe

Subich, W4TV
Sent: 18 August 2014 13:17
To: Wayne Burdick
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?


On 2014-08-18 1:10 AM, Wayne Burdick wrote:

We're considering per-mode as well,


I agree that per mode is more valuable than per band.  I'm nearly
always changing span when I change modes (10 KHz on CW, 20 KHz on
data, 50 or 100 KHz on Phone) but not generally changing span with
bands unless I've also changed mode.

73,

... Joe, W4TV


On 2014-08-18 1:10 AM, Wayne Burdick wrote:

We're considering per-mode as well, but at the moment we're

experimenting with per-band. Input welcome.


Wayne

On Aug 17, 2014, at 10:07 PM, Matt VK2RQ matt.vk...@gmail.com

wrote:



Would it make more sense for it to be per-mode rather than per-band?

For example, I can imagine on CW you might want to zoom in more than on
SSB. Maybe some P3 owners can comment?


73, Matt VK2RQ


On 18 Aug 2014, at 3:01 pm, Wayne Burdick n...@elecraft.com

wrote:


We just added per-band SPAN settings to the PX3 (and will later add

it

to the P3). We're also adding a menu setting to quantize the SPAN
selections to 2, 5, 10, 20, 50, 100, and 200 kHz. This behavior would

be user-

selectable; the default would be continuously variable, as it is at

present.


For a lot of P3/PX3 users, the combination of these two changes

will

result in less manipulation of the SPAN control, and will save some Fn
switches for other uses.


Wayne
N6KR



On Aug 17, 2014, at 9:45 PM, Jim Brown

j...@audiosystemsgroup.com wrote:



On Sun,8/17/2014 7:18 PM, Fred Jensen wrote:
I'm still working at what the ideal span on my P3 would be, in

the

NAQP SSB yesterday, I had it at 100 KHz and it seemed pretty good.


I have five of the function keys programmed for different span

settings. The other three are Peak Toggle, Fixed Mode Toggle, and Noise
Blanker Toggle.


I use 2 kHz for looking at the quality of CW signals, 10 kHz for

most CW

pileups, 50 kHz, 100 kHz, and 200 kHz for contesting and general

operating.

I did have 20 kHz programmed, but gave that up for the NB toggle.


Before each contest, I'll run through all the bands and set up the

span

and centering. 50/60 kHz is pretty good for Sprints and state QSO

parties,

100 kHz is good for most CW contests, 200 kHz is not wide enough for

some

SSB contests.


For 6M, I set a 200 kHz span from 50.080 to 50.280. This lets me

see

CW, SSB, and JT65.


73, Jim K9YC






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[Elecraft] KX3 for SWLs?

Someone said the KX3 makes a descent shortwave receiver using telescopic
antenna.
I connected a whip antenna with loading coil for 20m, and compared the
performance side by side to a Grundig G3 shortwave radio. The latter was
using its own internal telescopic antenna.
However, the G3 radio turned out to be better than the KX3 in terms of both
signal strength and clarity on SSB and AM.
Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
whip?

73,
AC9FU
Chris
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Re: [Elecraft] KX3 for SWLs?

2014-08-18 Thread Fred Smith

I have both radios that you have and using a Real Antenna the KX3 has by
far the better receiver in fact they are not even in the same class. The
whip antennas I have 4 different ones BTW all were a waste of money IMHO and
sit on a shelf unused for some time, just use a wire antenna (even a short
one) and the internal tuner on the KX3 will run circles around the G3 mine
will.


73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100
P3/SVGA--KAT500--W2
Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G
300+w--(2) B-5016-G's 165w 2m



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Chris
Chien
Sent: Monday, August 18, 2014 9:47 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 for SWLs?

Someone said the KX3 makes a descent shortwave receiver using telescopic
antenna.
I connected a whip antenna with loading coil for 20m, and compared the
performance side by side to a Grundig G3 shortwave radio. The latter was
using its own internal telescopic antenna.
However, the G3 radio turned out to be better than the KX3 in terms of both
signal strength and clarity on SSB and AM.
Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
whip?

73,
AC9FU
Chris
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Re: [Elecraft] P3/PX3 SPAN Settings

2014-08-18 Thread Brian Hunt

I think it would be helpful to center the span on the A-cursor when changing 
spans. Often when going from 50 KHz to 10 KHz (e.g. take a closer look at a 
pileup) the cursor winds up on the far right side of the screen. My $0.02. 

73,
Brian K0DTJ
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Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?

2014-08-18 Thread iain macdonnell - N6ML

On Mon, Aug 18, 2014 at 7:35 AM, Joe Subich, W4TV li...@subich.com wrote:

 At present the K3 has... let's call it an oversight... in the way
 that it memorizes data sub-modes. It correctly memorizes the
 last-used data sub-mode on each band, but not the bandwidth setting
 appropriate to that sub-mode. Instead, the bandwidth settings for
 *all* data sub-modes on *all* bands are overwritten by the settings
 for whichever sub-mode was most recently used on *any* band. This is
 often quite inappropriate, and inconvenient for anyone whose
 interests cover a range of data sub-modes.


 That problem needs to be fixed in the K3/KX3 firmware before moving
 on to upgrade to automate the display settings of the P3 and the
 PX3.


 Agreed - and one of those user interface issues to which I referred
 earlier in this thread.  DATA A and AFSK A/FSK D need separate default
 bandwidth (2.8 or 4 KHz for DATA A, 500 Hz for AFSK A/FSK D) and the
 last used BW/FC values need to be stored per sub-mode/band.

+1

73,

~iain / N6ML





 On 2014-08-18 10:10 AM, Ian White wrote:

 I would agree with that... but first, there is another point that needs
 to be rationalized in the K3 (and, I presume, the KX3 also).

 DATA is not a single mode - it is only a folder name for a collection
 of different data sub-modes. Many of those sub-modes require quite
 different settings for the transceiver bandwidth and center frequency;
 and that is equally true about the optimum bandwidths for a visual
 display.

 At present the K3 has... let's call it an oversight... in the way that
 it memorizes data sub-modes. It correctly memorizes the last-used data
 sub-mode on each band, but not the bandwidth setting appropriate to that
 sub-mode. Instead, the bandwidth settings for *all* data sub-modes on
 *all* bands are overwritten by the settings for whichever sub-mode was
 most recently used on *any* band. This is often quite inappropriate, and
 inconvenient for anyone whose interests cover a range of data sub-modes.


 That problem needs to be fixed in the K3/KX3 firmware before moving on
 to upgrade to automate the display settings of the P3 and the PX3.


 73 from Ian GM3SEK


 -Original Message-
 From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of

 Joe

 Subich, W4TV
 Sent: 18 August 2014 13:17
 To: Wayne Burdick
 Cc: elecraft@mailman.qth.net
 Subject: Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?


 On 2014-08-18 1:10 AM, Wayne Burdick wrote:

 We're considering per-mode as well,


 I agree that per mode is more valuable than per band.  I'm nearly
 always changing span when I change modes (10 KHz on CW, 20 KHz on
 data, 50 or 100 KHz on Phone) but not generally changing span with
 bands unless I've also changed mode.

 73,

 ... Joe, W4TV


 On 2014-08-18 1:10 AM, Wayne Burdick wrote:

 We're considering per-mode as well, but at the moment we're

 experimenting with per-band. Input welcome.


 Wayne

 On Aug 17, 2014, at 10:07 PM, Matt VK2RQ matt.vk...@gmail.com

 wrote:


 Would it make more sense for it to be per-mode rather than per-band?

 For example, I can imagine on CW you might want to zoom in more than on
 SSB. Maybe some P3 owners can comment?


 73, Matt VK2RQ

 On 18 Aug 2014, at 3:01 pm, Wayne Burdick n...@elecraft.com

 wrote:


 We just added per-band SPAN settings to the PX3 (and will later add

 it

 to the P3). We're also adding a menu setting to quantize the SPAN
 selections to 2, 5, 10, 20, 50, 100, and 200 kHz. This behavior would

 be user-

 selectable; the default would be continuously variable, as it is at

 present.


 For a lot of P3/PX3 users, the combination of these two changes

 will

 result in less manipulation of the SPAN control, and will save some Fn
 switches for other uses.


 Wayne
 N6KR


 On Aug 17, 2014, at 9:45 PM, Jim Brown

 j...@audiosystemsgroup.com wrote:


 On Sun,8/17/2014 7:18 PM, Fred Jensen wrote:
 I'm still working at what the ideal span on my P3 would be, in

 the

 NAQP SSB yesterday, I had it at 100 KHz and it seemed pretty good.


 I have five of the function keys programmed for different span

 settings. The other three are Peak Toggle, Fixed Mode Toggle, and Noise
 Blanker Toggle.


 I use 2 kHz for looking at the quality of CW signals, 10 kHz for

 most CW

 pileups, 50 kHz, 100 kHz, and 200 kHz for contesting and general

 operating.

 I did have 20 kHz programmed, but gave that up for the NB toggle.


 Before each contest, I'll run through all the bands and set up the

 span

 and centering. 50/60 kHz is pretty good for Sprints and state QSO

 parties,

 100 kHz is good for most CW contests, 200 kHz is not wide enough for

 some

 SSB contests.


 For 6M, I set a 200 kHz span from 50.080 to 50.280. This lets me

 see

 CW, SSB, and JT65.


 73, Jim K9YC





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 Help:

Re: [Elecraft] [K3] Fan Replacement

2014-08-18 Thread Harry Yingst via Elecraft

I used the included Hardware with the  Noctua Fans





 From: zen...@netspace.net.au zen...@netspace.net.au
To: elecraft@mailman.qth.net elecraft@mailman.qth.net 
Sent: Sunday, August 17, 2014 8:59 AM
Subject: Re: [Elecraft] [K3] Fan Replacement
 

Hello Harry,

I'm about to follow your lead and install the Noctua fans in my K3. Did you 
have to use alternate mounting hardware for the fans? I see that the Noctua fan 
is 25mm thick, vs 15mm for the stock Utech fan and so the mounting bolts will 
be too short to hold the Noctua fan?

Thanks,
John
VK7JB
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[Elecraft] [K3] [FS] K-Line for Sale

2014-08-18 Thread Randy Moore

I am helping a friend, KD4UP, sell his K-Line.  Please consider the 
following:


K3/100:  $2000
  SN 688, updated 6/2013 by Elecraft to current factory specs,
 calibrated and aligned (including gold pins where required)
  Includes 2.8kHz roofing filter, KXV3A, KAT3, Elecraft mic

P3 w/SVGA:  $850
   SN 0474

KPA500:  $1700
   SN 0370

KAT500:  $525
   SN 0135

All cables included.
All plus shipping of your choice.
Prefer to sell the KPA500 and KAT500 together.

Tnx es 73,
Randy, KS4L
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Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?

2014-08-18 Thread Jim Brown


On Sun,8/17/2014 10:01 PM, Wayne Burdick wrote:

We just added per-band SPAN settings to the PX3 (and will later add it to the 
P3). We're also adding a menu setting to quantize the SPAN selections to 2, 5, 
10, 20, 50, 100, and 200 kHz. This behavior would be user-selectable; the 
default would be continuously variable, as it is at present.


I like that a lot.

73, Jim K9YC

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Re: [Elecraft] KX3 for SWLs?

The Grudig has more gain because it is designed to be used with a short whip. 
The KX3 is built for high dynamic range with full-size antennas, so it will 
perform better with a long wire, dipole, vertical, etc., cut for the band in 
use. 

But if you have no choice but to use a short whip with the KX3 sometimes, you 
can increase the PREAMP menu setting to 30 dB (a per-band setting).

73,
Wayne
N6KR





On Aug 18, 2014, at 7:46 AM, Chris Chien auspicious3...@gmail.com wrote:

 Someone said the KX3 makes a descent shortwave receiver using telescopic
 antenna.
 I connected a whip antenna with loading coil for 20m, and compared the
 performance side by side to a Grundig G3 shortwave radio. The latter was
 using its own internal telescopic antenna.
 However, the G3 radio turned out to be better than the KX3 in terms of both
 signal strength and clarity on SSB and AM.
 Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
 whip?
 
 73,
 AC9FU
 Chris
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Re: [Elecraft] KX3 for SWLs?

I agree. I used a short whip simply to see if the KX3 is suitable for
portable SWLs.
In this case, I would say a short whip doesn't make KX3 a descent shortwave
receiver.

73,
AC9FU


2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:

 The Grudig has more gain because it is designed to be used with a short
 whip. The KX3 is built for high dynamic range with full-size antennas, so
 it will perform better with a long wire, dipole, vertical, etc., cut for
 the band in use.

 But if you have no choice but to use a short whip with the KX3 sometimes,
 you can increase the PREAMP menu setting to 30 dB (a per-band setting).

 73,
 Wayne
 N6KR





 On Aug 18, 2014, at 7:46 AM, Chris Chien auspicious3...@gmail.com wrote:

  Someone said the KX3 makes a descent shortwave receiver using telescopic
  antenna.
  I connected a whip antenna with loading coil for 20m, and compared the
  performance side by side to a Grundig G3 shortwave radio. The latter was
  using its own internal telescopic antenna.
  However, the G3 radio turned out to be better than the KX3 in terms of
 both
  signal strength and clarity on SSB and AM.
  Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
  whip?
 
  73,
  AC9FU
  Chris
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Re: [Elecraft] KX3 for SWLs?

2014-08-18 Thread Chris, G5VZ

The KX3 works superbly well with a voltage probe antenna, such as the 
PA0DRT Mini Whip design.


I've used my KX3 with a NASA Marine HF Active Antenna, too.

All small, neat, tidy and high performance for listening. Performance 
comparing very well with full-size  antennas.


Chris
G5VZ / WG5VZ

On 18/08/14 17:10, Chris Chien wrote:

I agree. I used a short whip simply to see if the KX3 is suitable for
portable SWLs.
In this case, I would say a short whip doesn't make KX3 a descent shortwave
receiver.

73,
AC9FU


2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:


The Grudig has more gain because it is designed to be used with a short
whip. The KX3 is built for high dynamic range with full-size antennas, so
it will perform better with a long wire, dipole, vertical, etc., cut for
the band in use.

But if you have no choice but to use a short whip with the KX3 sometimes,
you can increase the PREAMP menu setting to 30 dB (a per-band setting).

73,
Wayne
N6KR





On Aug 18, 2014, at 7:46 AM, Chris Chien auspicious3...@gmail.com wrote:


Someone said the KX3 makes a descent shortwave receiver using telescopic
antenna.
I connected a whip antenna with loading coil for 20m, and compared the
performance side by side to a Grundig G3 shortwave radio. The latter was
using its own internal telescopic antenna.
However, the G3 radio turned out to be better than the KX3 in terms of

both

signal strength and clarity on SSB and AM.
Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
whip?

73,
AC9FU
Chris
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Re: [Elecraft] KX3 for SWLs?

You could use an active antenna (amplified) with the KX3 -- just don't 
transmit into it. The Grundig probably has the equivalent of an active antenna 
amplifier built in.

Wayne


On Aug 18, 2014, at 9:10 AM, Chris Chien auspicious3...@gmail.com wrote:

 I agree. I used a short whip simply to see if the KX3 is suitable for 
 portable SWLs.
 In this case, I would say a short whip doesn't make KX3 a descent shortwave 
 receiver.
 
 73,
 AC9FU
 
 
 2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:
 The Grudig has more gain because it is designed to be used with a short whip. 
 The KX3 is built for high dynamic range with full-size antennas, so it will 
 perform better with a long wire, dipole, vertical, etc., cut for the band in 
 use.
 
 But if you have no choice but to use a short whip with the KX3 sometimes, you 
 can increase the PREAMP menu setting to 30 dB (a per-band setting).
 
 73,
 Wayne
 N6KR



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Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?

2014-08-18 Thread Pierfrancesco Caci

On August 18, 2014 7:10:01 AM GMT+02:00, Wayne Burdick n...@elecraft.com 
wrote:
We're considering per-mode as well, but at the moment we're
experimenting with per-band. Input welcome.

Wayne

On Aug 17, 2014, at 10:07 PM, Matt VK2RQ matt.vk...@gmail.com wrote:

 Would it make more sense for it to be per-mode rather than per-band?
For example, I can imagine on CW you might want to zoom in more than on
SSB. Maybe some P3 owners can comment?
 
 73, Matt VK2RQ
 
 On 18 Aug 2014, at 3:01 pm, Wayne Burdick n...@elecraft.com wrote:
 
 We just added per-band SPAN settings to the PX3 (and will later add
it to the P3). We're also adding a menu setting to quantize the SPAN
selections to 2, 5, 10, 20, 50, 100, and 200 kHz. This behavior would
be user-selectable; the default would be continuously variable, as it
is at present.
 
 For a lot of P3/PX3 users, the combination of these two changes will
result in less manipulation of the SPAN control, and will save some Fn
switches for other uses. 
 
 Wayne
 N6KR
 
 
 On Aug 17, 2014, at 9:45 PM, Jim Brown j...@audiosystemsgroup.com
wrote:
 
 On Sun,8/17/2014 7:18 PM, Fred Jensen wrote:
 I'm still working at what the ideal span on my P3 would be, in
the NAQP SSB yesterday, I had it at 100 KHz and it seemed pretty good.
 
 I have five of the function keys programmed for different span
settings. The other three are Peak Toggle, Fixed Mode Toggle, and Noise
Blanker Toggle.
 
 I use 2 kHz for looking at the quality of CW signals, 10 kHz for
most CW pileups, 50 kHz, 100 kHz, and 200 kHz for contesting and
general operating. I did have 20 kHz programmed, but gave that up for
the NB toggle.
 
 Before each contest, I'll run through all the bands and set up the
span and centering. 50/60 kHz is pretty good for Sprints and state QSO
parties, 100 kHz is good for most CW contests, 200 kHz is not wide
enough for some SSB contests.
 
 For 6M, I set a 200 kHz span from 50.080 to 50.280. This lets me
see CW, SSB, and JT65.
 
 73, Jim K9YC
 
 
 
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Yes, I'd like it per mode.
Thanks,
Pf
-- 
Pierfrancesco Caci

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Re: [Elecraft] KX3 for SWLs?

Using the PREAMP increases both the signal and noise at the same time.
It works well with a 20dB gain active loop antenna, but it still not
completely blowing the Grundig away. I might want to test it later with a
full size dipole.
Though the little G3 is not at all in the same class as KX3, but it is
still comparable in terms of shortwave listening.

73,
AC9FU
Chris


2014-08-19 0:25 GMT+08:00 Wayne Burdick n...@elecraft.com:

 You could use an active antenna (amplified) with the KX3 -- just don't
 transmit into it. The Grundig probably has the equivalent of an active
 antenna amplifier built in.

 Wayne


 On Aug 18, 2014, at 9:10 AM, Chris Chien auspicious3...@gmail.com wrote:

  I agree. I used a short whip simply to see if the KX3 is suitable for
 portable SWLs.
  In this case, I would say a short whip doesn't make KX3 a descent
 shortwave receiver.
 
  73,
  AC9FU
 
 
  2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:
  The Grudig has more gain because it is designed to be used with a short
 whip. The KX3 is built for high dynamic range with full-size antennas, so
 it will perform better with a long wire, dipole, vertical, etc., cut for
 the band in use.
 
  But if you have no choice but to use a short whip with the KX3
 sometimes, you can increase the PREAMP menu setting to 30 dB (a per-band
 setting).
 
  73,
  Wayne
  N6KR




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Re: [Elecraft] P3SVGA

You're both right, he mused, studying his own schematic (and inexplicably 
referring to himself in the third person).

The KNB3 *is* downstream of the pick-off point for the P3. But in the presence 
of very strong signals and with the KNB3 set to a long gate time, some of the 
gating artifacts could in theory back-propagate to the pick-off point, 
affecting the P3. Normally this effect would be highly suppressed because of 
the low impedance of the driving stage (the mixer post-amp).

Wayne
N6KR


On Aug 17, 2014, at 11:54 PM, Jim Brown j...@audiosystemsgroup.com wrote:

 Joe,
 
 I don't want to be confrontational and I greatly value your engineering mind, 
 but I'm quite certain that the wide K3 NB DOES affect the P3 display. I work 
 a lot of JT65 on 6M, and there are several strong signals (not of overload 
 magnitude) near me. The NB DOES create artifacts that result in multiple 
 decodes, and corresponding stuff that is quite visible in the P3 display, and 
 that is not visible when the K3 NB is off.
 
 73, Jim K9YC
 
 On Fri,8/15/2014 2:35 PM, Joe Subich, W4TV wrote:
 
 I often study the screen of my P3, which DOES show reduction of noise
 when the wider NB is active. 2-4 dB is typical for the types of noise
 for which it is effective.
 
 2 - 4 dB may be due to upsetting the impedance at the IF feed but given
 the circuit topology it is not possible for the NB to provide effective
 blanking to the P3 with the noise gate *after* the IF pick-off point.
 
 73,
 
   ... Joe, W4TV
 
 
 On 2014-08-15 5:13 PM, Jim Brown wrote:
 On 8/15/2014 11:29 AM, Joe Subich, W4TV wrote:
 Jim, that information is incorrect.  The K3 NB can not possibly have
 any impact on the P3 or P3SVGA as the IF pick-off is at the output
 of the first mixer - *before* any noise blanker gate.
 
 Joe,
 
 I've never studied the schematic or signal flow in the regard, but I
 often study the screen of my P3, which DOES show reduction of noise when
 the wider NB is active. 2-4 dB is typical for the types of noise for
 which it is effective.
 
 I appreciate the alert to the existence of the P3 NB. I last updated
 firmware about six months ago, and it was not in that version. It does,
 indeed, work pretty well.
 
 73, Jim K9YC



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Re: [Elecraft] KX3 for SWLs?

The Grudig is a fine radio, lacking only the ability to transmit.

Wayne
N6KR


On Aug 18, 2014, at 9:47 AM, Chris Chien auspicious3...@gmail.com wrote:

 Using the PREAMP increases both the signal and noise at the same time. 
 It works well with a 20dB gain active loop antenna, but it still not 
 completely blowing the Grundig away. I might want to test it later with a 
 full size dipole.
 Though the little G3 is not at all in the same class as KX3, but it is still 
 comparable in terms of shortwave listening.
 
 73,
 AC9FU
 Chris
 
 
 2014-08-19 0:25 GMT+08:00 Wayne Burdick n...@elecraft.com:
 You could use an active antenna (amplified) with the KX3 -- just don't 
 transmit into it. The Grundig probably has the equivalent of an active 
 antenna amplifier built in.
 
 Wayne
 
 
 On Aug 18, 2014, at 9:10 AM, Chris Chien auspicious3...@gmail.com wrote:
 
  I agree. I used a short whip simply to see if the KX3 is suitable for 
  portable SWLs.
  In this case, I would say a short whip doesn't make KX3 a descent shortwave 
  receiver.
 
  73,
  AC9FU
 
 
  2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:
  The Grudig has more gain because it is designed to be used with a short 
  whip. The KX3 is built for high dynamic range with full-size antennas, so 
  it will perform better with a long wire, dipole, vertical, etc., cut for 
  the band in use.
 
  But if you have no choice but to use a short whip with the KX3 sometimes, 
  you can increase the PREAMP menu setting to 30 dB (a per-band setting).
 
  73,
  Wayne
  N6KR
 
 
 
 

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Re: [Elecraft] KX3 for SWLs?

2014-08-18 Thread George Fritkin via Elecraft

Wouldn't the fact that the bandwidth is much more narrow in the KX3 than your 
typical SW RX.  So AM is much better SSB probably better (speaker used not 
mentioned). A lot of SW radios copy FM radio stations, hence better fidelity.  
The signal strength maybe just apparent because the Signal + Noise is greater

My 2 cents worth, I'd give more but I have spent my money with Elecraft

George, W6GF


Sent from my iPad

 On Aug 18, 2014, at 8:59 AM, Wayne Burdick n...@elecraft.com wrote:
 
 The Grudig has more gain because it is designed to be used with a short whip. 
 The KX3 is built for high dynamic range with full-size antennas, so it will 
 perform better with a long wire, dipole, vertical, etc., cut for the band in 
 use. 
 
 But if you have no choice but to use a short whip with the KX3 sometimes, you 
 can increase the PREAMP menu setting to 30 dB (a per-band setting).
 
 73,
 Wayne
 N6KR
 
 
 
 
 
 On Aug 18, 2014, at 7:46 AM, Chris Chien auspicious3...@gmail.com wrote:
 
 Someone said the KX3 makes a descent shortwave receiver using telescopic
 antenna.
 I connected a whip antenna with loading coil for 20m, and compared the
 performance side by side to a Grundig G3 shortwave radio. The latter was
 using its own internal telescopic antenna.
 However, the G3 radio turned out to be better than the KX3 in terms of both
 signal strength and clarity on SSB and AM.
 Is this normal for KX3? Has anyone ever tried using the KX3 with a simple
 whip?
 
 73,
 AC9FU
 Chris
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[Elecraft] No thanks to SSTV on P3, let's get back on track.

2014-08-18 Thread david Moes


add me into the per mode group.and auto reference level would be cool

--
David Moes

dm...@nexicom.net
VE3DVY

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Re: [Elecraft] KX3 for SWLs?

Both the bandwidth and speaker have been taken into consideration. With a
short passive whip, the KX3 is far behind the Grundig, because even strong
station is barely heard from KX3.
However, an active antenna makes the KX3 much better, but still not
significantly better than the little Grundig.
In fact, this comparison is not a fair game for both rigs. The Grundig has
a built in amplifier to work with the telescopic antenna, while the KX3 is
not designed for that purpose. A safe conclusion would be that the KX3 is a
little deaf using short whips, and the Grundig is a descent shortwave
receiver too.

73,
AC9FU,
Chris


2014-08-19 0:54 GMT+08:00 George Fritkin georgefrit...@yahoo.com:

 Wouldn't the fact that the bandwidth is much more narrow in the KX3 than
 your typical SW RX.  So AM is much better SSB probably better (speaker used
 not mentioned). A lot of SW radios copy FM radio stations, hence better
 fidelity.  The signal strength maybe just apparent because the Signal +
 Noise is greater

 My 2 cents worth, I'd give more but I have spent my money with Elecraft

 George, W6GF


 Sent from my iPad

  On Aug 18, 2014, at 8:59 AM, Wayne Burdick n...@elecraft.com wrote:
 
  The Grudig has more gain because it is designed to be used with a short
 whip. The KX3 is built for high dynamic range with full-size antennas, so
 it will perform better with a long wire, dipole, vertical, etc., cut for
 the band in use.
 
  But if you have no choice but to use a short whip with the KX3
 sometimes, you can increase the PREAMP menu setting to 30 dB (a per-band
 setting).
 
  73,
  Wayne
  N6KR
 
 
 
 
 
  On Aug 18, 2014, at 7:46 AM, Chris Chien auspicious3...@gmail.com
 wrote:
 
  Someone said the KX3 makes a descent shortwave receiver using telescopic
  antenna.
  I connected a whip antenna with loading coil for 20m, and compared the
  performance side by side to a Grundig G3 shortwave radio. The latter was
  using its own internal telescopic antenna.
  However, the G3 radio turned out to be better than the KX3 in terms of
 both
  signal strength and clarity on SSB and AM.
  Is this normal for KX3? Has anyone ever tried using the KX3 with a
 simple
  whip?
 
  73,
  AC9FU
  Chris
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Re: [Elecraft] No thanks to SSTV on P3, let's get back on track.

2014-08-18 Thread GRANT YOUNGMAN

In a lot of ways it’s a no-win situation.

Data guys want mo’ data stuff and changes to existing features.  Moon bounce 
weak signal guys want something else.  Something doesn’t work right for one 
mode used by a few.  CW guys will want something else.  A few don’t like the 
size of the cabinet.  And then there’s the location of the notch.  Etc.  
Everyone seems to have a personal want list depending on their personal 
interest and real or perceived faults in the radio.

Bill (if your name is Bill, don’t take it personally, please)  wants something 
done one way, Joe wants it done some other way, and John doesn’t like either 
one.  No matter what is done, someone will be unhappy or find yet one more 
“inexcusable” design choice or engineering “error” and find a few other people 
on the list who agree with him, as we split into armed camps over some issue or 
other that will prevent the apparently unforgivable requirement  to actually 
turn a knob or make a conscious decision to change a parameter.

Why would SSTV decode on the P3 be “off track”?  It would be an interesting 
feature, in any case.  If someone suggests something, 20 people chime in with 
“that’s nonsense’, followed immediately with their own “essentials” or gripe 
list which likely at least in part is just as much nonsense to others.  Design 
by committee doesn’t always yield a very good design.

One more curmudgeonly opinion, from someone who is simply happy that the whole 
thing works and is blessed with appendages expressly designed to manipulate 
buttons and knobs  … ;)

Grant NQ5T


On Aug 18, 2014, at 12:34 PM, david Moes dm...@nexicom.net wrote:

 add me into the per mode group.and auto reference level would be cool
 

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Re: [Elecraft] No thanks to SSTV on P3, let's get back on track.

2014-08-18 Thread Jim Brown


On Mon,8/18/2014 11:08 AM, GRANT YOUNGMAN wrote:

Design by committee doesn’t always yield a very good design.


Design without considering how a product will be used rarely produces a 
useful product. From where I sit, Wayne and Eric have been quite good at 
studying the needs of their customer base, engaging the BS filter 
between their ears, and incorporating as many features as possible that 
1) make more users happy without making others unhappy; 2) are useful to 
enough users to justify the development costs. This thread is directly 
targeted both. Programming time for some of these features is not cheap, 
and Elecraft is not a big company.


73, Jim K9YC


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Re: [Elecraft] No thanks to SSTV on P3, let's get back on track.

2014-08-18 Thread GRANT YOUNGMAN


 
 Design without considering how a product will be used rarely produces a 
 useful product. From where I sit, Wayne and Eric have been quite good at 
 studying the needs of their customer base, engaging the BS filter between 
 their ears, and incorporating as many features as possible 

Certainly correct … 

Grant NQ5T
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[Elecraft] KX3 companion

2014-08-18 Thread Nr4c

I have up to now resisted looking at this APP. But today rec'd a keyboard and 
USB dongle for my Samsung TAB 2, so I took the plunge. Wow!  This is a really 
cool extension to the basic KX3 radio. I can see many hours of exploration into 
this new world. Great job!

Sent from my iPhone
...nr4c. bill

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Re: [Elecraft] No thanks to SSTV on P3, let's get back on track.

2014-08-18 Thread Ray Sills

And it appears to be the case that new features have been added to the  
K3, P3, and KX3 (and likely PX3) =without= anyone having to sacrifice  
and existing feature... i.e. you can have voice messages, but not CW  
messages or ..., etc.  It seems to me the Elecraft design team has  
been able to make efficient use of existing firmware code space, yet  
still able to add new things.  Sooner or later, they are going to run  
out of space to hold the code... and/or supporting data.


73 de Ray
K2ULR
KX3 #211


On Aug 18, 2014, at 2:35 PM, GRANT YOUNGMAN wrote:





Design without considering how a product will be used rarely  
produces a useful product. From where I sit, Wayne and Eric have  
been quite good at studying the needs of their customer base,  
engaging the BS filter between their ears, and incorporating as  
many features as possible


Certainly correct …

Grant NQ5T
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Re: [Elecraft] NiHg batteries How do I test?

2014-08-18 Thread Bob N3MNT

You did not mention what power level you were running. 
To find a bad one you need to check the voltage under load.  Even a bad one
can look OK after a short rest with no load.



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/NiHg-batteries-How-do-I-test-tp7592271p7592328.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KX3 for SWLs?

Hmm ... Above 49 meters an AlexLoop with the KX3 
should work very well for SWBC.


Phil W7OX

On 8/18/14, 9:47 AM, Chris Chien wrote:

Using the PREAMP increases both the signal and noise at the same time.
It works well with a 20dB gain active loop antenna, but it still not
completely blowing the Grundig away. I might want to test it later with a
full size dipole.
Though the little G3 is not at all in the same class as KX3, but it is
still comparable in terms of shortwave listening.

73,
AC9FU
Chris


2014-08-19 0:25 GMT+08:00 Wayne Burdick n...@elecraft.com:


You could use an active antenna (amplified) with the KX3 -- just don't
transmit into it. The Grundig probably has the equivalent of an active
antenna amplifier built in.

Wayne


On Aug 18, 2014, at 9:10 AM, Chris Chien auspicious3...@gmail.com wrote:


I agree. I used a short whip simply to see if the KX3 is suitable for

portable SWLs.

In this case, I would say a short whip doesn't make KX3 a descent

shortwave receiver.

73,
AC9FU


2014-08-18 23:59 GMT+08:00 Wayne Burdick n...@elecraft.com:
The Grudig has more gain because it is designed to be used with a short

whip. The KX3 is built for high dynamic range with full-size antennas, so
it will perform better with a long wire, dipole, vertical, etc., cut for
the band in use.

But if you have no choice but to use a short whip with the KX3

sometimes, you can increase the PREAMP menu setting to 30 dB (a per-band
setting).

73,
Wayne
N6KR





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[Elecraft] K1 Receiver Sensitivity Issue.

2014-08-18 Thread Les Garwood

Dear Fellows,

I Bought a K1 kit at a ham fest several years ago  (SN 02197) and recently
finished the receiver section.  Although audio is strong, as evidenced by
the hiss, I have nearly no signal on all 4 bands.
I can pump strong rf into it and hear a good side tone/bfo but not
strongly. Once, I heard a very faint CW station that was loud on my big
rig. But no others.
From the best of my repeated testings, all voltages and resistances
provided in the manual match.  I have not built an rf probe for my DMM yet
but will.  However, I also used the signal generator kit from Elecraft
(the KXGI?).  It is only weakly audible too, and only on the 50 microvolt
setting.  The AGC setting has no effect.  The attenuator kills the weak
probe signal when on.
One post I found after scouring the  Net spoke of a very similar problem
that turned out to be a bad 2N7000, in the A Preamp stage,  but I can't see
how that would affect signal sensitivity, only audio gain.
I also put a scope on pin one and pin 4 of U1, the Receiver Mixer.  The
relative voltage was 3x higher on pin 1 than on pin 4.  I would at least
have expected gain instead.

Any comments appreciated.

73
Les
KE7SLX
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Re: [Elecraft] K1 Receiver Sensitivity Issue.


Les,

Yes, the NE612 should show plenty of gain.  When it does not, the usual 
reason is little or no oscillator signal to pin 6.


The Pre-mixer Bandpass filter must be aligned before you will get much 
of a signal at U1 pin 6.


Since you have a 'scope (hopefully with a 10X probe), I will give you an 
alternate method of tuning the Pre-Mixer Bandpass filter.


Since you have the 4 band board, you must follow the proper band order - 
adjust 15 (or 17) meters before adjusting 20 meters, and likewise adjust 
30 meters before 40 meters.
Make a check before starting - align all the slots in the trimmer 
capacitors parallel with the long edge of the band board.  Then check 
the activity of the crystal for each band - put your probe on band board 
P1 pin 4 and not the amplitude of the signal as you switch through the 
bands - you should have greater than 200 mV peak to peak.  The position 
of the trimmer slots when tuned should be no more than 30 degrees from 
the center position if your toroids are correct.


Then switch to 15 (or 17) meters, and with your probe on P1 pin 6, 
adjust the Pre-Mixer trimmer caps for 15 meters for the maximum 
amplitude.  Switch to 30 meters and do the same for that bands 
trimmers.  Do the same for 20 meters and 40 meters.  You should be able 
to get 200 mV peak to peak there on all bands.
Remember that your 'scope probe will load the Pre-Mix filter a bit, so 
the trimmers to the right of the filter will not be at their optimum 
setting, but it will be enough for receive - you will set the optimum 
position when you adjust for transmit.


You should check to see that the Pre-Mix signal is getting to U1 pin 6 - 
if it is not, suspect the coax link on the bottom of the board between 
J9 and J10.


Once you have a good signal at U1 pin 6, you should see that the output 
at pin 4 is much greater than the input at pin 1.


73,
Don W3FPR

On 8/18/2014 5:20 PM, Les Garwood wrote:

Dear Fellows,

I Bought a K1 kit at a ham fest several years ago  (SN 02197) and recently
finished the receiver section.  Although audio is strong, as evidenced by
the hiss, I have nearly no signal on all 4 bands.
I can pump strong rf into it and hear a good side tone/bfo but not
strongly. Once, I heard a very faint CW station that was loud on my big
rig. But no others.
From the best of my repeated testings, all voltages and resistances
provided in the manual match.  I have not built an rf probe for my DMM yet
but will.  However, I also used the signal generator kit from Elecraft
(the KXGI?).  It is only weakly audible too, and only on the 50 microvolt
setting.  The AGC setting has no effect.  The attenuator kills the weak
probe signal when on.
One post I found after scouring the  Net spoke of a very similar problem
that turned out to be a bad 2N7000, in the A Preamp stage,  but I can't see
how that would affect signal sensitivity, only audio gain.
I also put a scope on pin one and pin 4 of U1, the Receiver Mixer.  The
relative voltage was 3x higher on pin 1 than on pin 4.  I would at least
have expected gain instead.




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[Elecraft] Elecraft Digest, Vol 124, Issue 15 KX3 CW Drift

2014-08-18 Thread John Lawrence via Elecraft





Focus Group Thoughts for Elecraft  Re: KX3 and K3 drift on VHF Digital 
Applications


What about adding an external phase lock option that would also allow
the 10 MHz reference phase lock and GPS sync?  Many of the digital mode aps are
needing this kind of stability and the KX3 with an internal 2 meter board or 
external XV transverter family choice.  The XV series transverter LOs could 
have a kit for phase lock too.  


There are so many interested in WSPR and you have one of the gurus up north of 
Elecraft who's already done a design.  This also would bring the Elecraft 
product up to what's new and state-of-the-art for both the K3 and KX3 in 
digital communications 


John, W1QS



Message: 22
Date: Sun, 17 Aug 2014 09:21:53 -0700
From: Wayne Burdick n...@elecraft.com
To: Chris Johnson elecr...@ozy.us
Cc: Elecraft Reflector elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3-2M CW Drift
Message-ID: 859e5ead-9672-4372-97ad-4e126fe6d...@elecraft.com
Content-Type: text/plain; charset=us-ascii

This is within spec, though we're still looking at ways to further reduce it. 

73,
Wayne
N6KR

On Aug 17, 2014, at 4:20 AM, Chris Johnson elecr...@ozy.us wrote:

 I have two KX3's each with a 2M module.  Both units have had the temp 
calibration done to them.   When using CW,  there is a noticeable drift in the 
received CW side tone.  It has an unsable warble back and forth slowly +/- ~10 
HZ or so.  Is this the natural drift of the 2M unit I'm seeing here?  If so I'm 
assuming that's as good as it gets.
 





*

 


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Re: [Elecraft] K1 Receiver Sensitivity Issue.

2014-08-18 Thread Les Garwood

Hi Don,

Extremely helpful and encouraging; thanks.  Actually,  I was able to get
the trimmers set pretty well, i think, using a strong signal source.  But I
will make the measurements you recommended.
Right now, I suspect either low VFO output or something is pulling down the
gain of U1.

Les
On Aug 18, 2014 3:00 PM, Don Wilhelm w3...@embarqmail.com wrote:

 Les,

 Yes, the NE612 should show plenty of gain.  When it does not, the usual
 reason is little or no oscillator signal to pin 6.

 The Pre-mixer Bandpass filter must be aligned before you will get much of
 a signal at U1 pin 6.

 Since you have a 'scope (hopefully with a 10X probe), I will give you an
 alternate method of tuning the Pre-Mixer Bandpass filter.

 Since you have the 4 band board, you must follow the proper band order -
 adjust 15 (or 17) meters before adjusting 20 meters, and likewise adjust 30
 meters before 40 meters.
 Make a check before starting - align all the slots in the trimmer
 capacitors parallel with the long edge of the band board.  Then check the
 activity of the crystal for each band - put your probe on band board P1 pin
 4 and not the amplitude of the signal as you switch through the bands - you
 should have greater than 200 mV peak to peak.  The position of the trimmer
 slots when tuned should be no more than 30 degrees from the center position
 if your toroids are correct.

 Then switch to 15 (or 17) meters, and with your probe on P1 pin 6, adjust
 the Pre-Mixer trimmer caps for 15 meters for the maximum amplitude.  Switch
 to 30 meters and do the same for that bands trimmers.  Do the same for 20
 meters and 40 meters.  You should be able to get 200 mV peak to peak there
 on all bands.
 Remember that your 'scope probe will load the Pre-Mix filter a bit, so the
 trimmers to the right of the filter will not be at their optimum setting,
 but it will be enough for receive - you will set the optimum position when
 you adjust for transmit.

 You should check to see that the Pre-Mix signal is getting to U1 pin 6 -
 if it is not, suspect the coax link on the bottom of the board between J9
 and J10.

 Once you have a good signal at U1 pin 6, you should see that the output at
 pin 4 is much greater than the input at pin 1.

 73,
 Don W3FPR

 On 8/18/2014 5:20 PM, Les Garwood wrote:

 Dear Fellows,

 I Bought a K1 kit at a ham fest several years ago  (SN 02197) and recently
 finished the receiver section.  Although audio is strong, as evidenced by
 the hiss, I have nearly no signal on all 4 bands.
 I can pump strong rf into it and hear a good side tone/bfo but not
 strongly. Once, I heard a very faint CW station that was loud on my big
 rig. But no others.
 From the best of my repeated testings, all voltages and resistances
 provided in the manual match.  I have not built an rf probe for my DMM yet
 but will.  However, I also used the signal generator kit from Elecraft
 (the KXGI?).  It is only weakly audible too, and only on the 50 microvolt
 setting.  The AGC setting has no effect.  The attenuator kills the weak
 probe signal when on.
 One post I found after scouring the  Net spoke of a very similar problem
 that turned out to be a bad 2N7000, in the A Preamp stage,  but I can't
 see
 how that would affect signal sensitivity, only audio gain.
 I also put a scope on pin one and pin 4 of U1, the Receiver Mixer.  The
 relative voltage was 3x higher on pin 1 than on pin 4.  I would at least
 have expected gain instead.




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[Elecraft] K3, KX3 and XV series external 10 MHz reference


John,

That is already in place for the K3 with the External Reference (part of 
the KXV3 option).
True that does not help with the XV series LO, and I am not certain 
where another connector could be added to the KX3 unless the 2 meter 
option were not installed and the SMA connector for that option were 
used for the external reference option.


73,
Don W3FPR

On 8/18/2014 6:02 PM, John Lawrence via Elecraft wrote:

Focus Group Thoughts for Elecraft  Re: KX3 and K3 drift on VHF Digital 
Applications


What about adding an external phase lock option that would also allow
the 10 MHz reference phase lock and GPS sync?  Many of the digital mode aps are
needing this kind of stability and the KX3 with an internal 2 meter board or 
external XV transverter family choice.  The XV series transverter LOs could 
have a kit for phase lock too.

There are so many interested in WSPR and you have one of the gurus up north of 
Elecraft who's already done a design.  This also would bring the Elecraft 
product up to what's new and state-of-the-art for both the K3 and KX3 in 
digital communications




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[Elecraft] K3, KX3 and XV series external 10 MHz reference


Correction - I was just informed of the error of my ways.
The K3EXTREF option is separate from the KXV3.

73,
Don W3FPR
--
John,

That is already in place for the K3 with the External Reference (part of 
the KXV3 option).
True that does not help with the XV series LO, and I am not certain 
where another connector could be added to the KX3 unless the 2 meter 
option were not installed and the SMA connector for that option were 
used for the external reference option.


73,
Don W3FPR

On 8/18/2014 6:02 PM, John Lawrence via Elecraft wrote:

Focus Group Thoughts for Elecraft  Re: KX3 and K3 drift on VHF Digital 
Applications


What about adding an external phase lock option that would also allow
the 10 MHz reference phase lock and GPS sync?  Many of the digital mode aps are
needing this kind of stability and the KX3 with an internal 2 meter board or 
external XV transverter family choice.  The XV series transverter LOs could 
have a kit for phase lock too.

There are so many interested in WSPR and you have one of the gurus up north of 
Elecraft who's already done a design.  This also would bring the Elecraft 
product up to what's new and state-of-the-art for both the K3 and KX3 in 
digital communications




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Re: [Elecraft] K1 Receiver Sensitivity Issue.


Les,

If you can get at least 200 mV peak to peak out of the Pre-Mixer 
bandpass, the VFO level is OK.
The VFO and band module xtal oscillator are mixed in U7 and the output 
of that mixer (after the bandpass filter) is applied to U1 pin 6.


If you find you need to check for loading of the U1 output, lift one 
lead of C22 to isolate it.


73,
Don W3FPR

On 8/18/2014 6:08 PM, Les Garwood wrote:

Hi Don,

Extremely helpful and encouraging; thanks.  Actually,  I was able to get
the trimmers set pretty well, i think, using a strong signal source.  But I
will make the measurements you recommended.
Right now, I suspect either low VFO output or something is pulling down the
gain of U1.

Les
On Aug 18, 2014 3:00 PM, Don Wilhelm w3...@embarqmail.com wrote:


Les,

Yes, the NE612 should show plenty of gain.  When it does not, the usual
reason is little or no oscillator signal to pin 6.

The Pre-mixer Bandpass filter must be aligned before you will get much of
a signal at U1 pin 6.

Since you have a 'scope (hopefully with a 10X probe), I will give you an
alternate method of tuning the Pre-Mixer Bandpass filter.

Since you have the 4 band board, you must follow the proper band order -
adjust 15 (or 17) meters before adjusting 20 meters, and likewise adjust 30
meters before 40 meters.
Make a check before starting - align all the slots in the trimmer
capacitors parallel with the long edge of the band board.  Then check the
activity of the crystal for each band - put your probe on band board P1 pin
4 and not the amplitude of the signal as you switch through the bands - you
should have greater than 200 mV peak to peak.  The position of the trimmer
slots when tuned should be no more than 30 degrees from the center position
if your toroids are correct.

Then switch to 15 (or 17) meters, and with your probe on P1 pin 6, adjust
the Pre-Mixer trimmer caps for 15 meters for the maximum amplitude.  Switch
to 30 meters and do the same for that bands trimmers.  Do the same for 20
meters and 40 meters.  You should be able to get 200 mV peak to peak there
on all bands.
Remember that your 'scope probe will load the Pre-Mix filter a bit, so the
trimmers to the right of the filter will not be at their optimum setting,
but it will be enough for receive - you will set the optimum position when
you adjust for transmit.

You should check to see that the Pre-Mix signal is getting to U1 pin 6 -
if it is not, suspect the coax link on the bottom of the board between J9
and J10.

Once you have a good signal at U1 pin 6, you should see that the output at
pin 4 is much greater than the input at pin 1.

73,
Don W3FPR




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Re: [Elecraft] [KX3] Case for KX3

2014-08-18 Thread Dennis Griffin

LowePro does have a very good bag finder guide on their website, and the 
BestBuy in my area carries quite a few of their bags, if you don't have a 
larger camera shop in your area. I have used many of their products for a few 
decades and it's all holding up well. REI also has some of their bags, as well 
as some photog type bags from MountainSmith.

Seeing a few comments about them, I ordered a StrobeStuff bag from ThinkTank, 
but returned it. I felt it is far bulkier than need be and doesn't offer 
protection for much beyond light bumps or scrapes, and I found it clumsy to get 
a KX3 into it, even w/o heatsink, SideKX's or Lexan cover, because of the 
center opening zipper. Might have been easier with a Lexan cover installed, 
preventing it from trying to hang up on the zipper. A snug fitting Polarfleece 
type stuff bag or something like a thick sock would offer about as much 
protection with minimal additional bulk, if one were going to carry it packed 
away in a backpack, for example. For carrying just the KX3 and a few 
accessories, on a bicycle, motorcycle or in the trunk of a vehicle, something 
like the Pelican 1200 or a well padded photog type case or pack is probably the 
best insurance. I've taken expensive camera  radio gear off road on the back 
of a dual sport motorcycle in Pelican 1200, 1300  1400 cases with no conce
 rns about the welfare of the contents.

73 de Dennis KD7CAC
Scottsdale, AZ

On Aug 18, 2014, at 5:27 PM, k...@qsl.net [KX3] k...@yahoogroups.com wrote:

 
 Sorry, Jim, but there's no model number anywhere on or in the bag.  I've 
 owned this bag for many years, so it's likely been discontinued.  I used it 
 to transport an Icom 703 for a long time before I got the KX3.  I just 
 reconfigured the dividers as required. 
 
  
 My suggestion is to visit a large camera store (the kind of place where 
 professional photographers shop) and see what they have to offer.  That's how 
 I found my bag.  Maybe look at the web sites of some of the big national 
 camera stores, like B  H Photo  Video, Ritz Camera (where I buy a lot of my 
 photo gear), and so on.  Your bag is out there...
 
  
 73/72,
 
 Dean K5DH
 
 
 __._,_.___
 Posted by: k...@qsl.net
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Re: [Elecraft] [KX3] Case for KX3

I use a LowePro Nova 170 AW. Holds the KX3,
batteries, etc. Has a waterproof cover.

Phil W7OX

On 8/18/14, 6:21 PM, Dennis Griffin wrote:

LowePro does have a very good bag finder guide on their website, and the
BestBuy in my area carries quite a few of their bags, if you don't have a
larger camera shop in your area. I have used many of their products for a few
decades and it's all holding up well. REI also has some of their bags, as well
as some photog type bags from MountainSmith.

Seeing a few comments about them, I ordered a StrobeStuff bag from ThinkTank, but
returned it. I felt it is far bulkier than need be and doesn't offer protection for
much beyond light bumps or scrapes, and I found it clumsy to get a KX3 into it, even
w/o heatsink, SideKX's or Lexan cover, because of the center opening zipper. Might have
been easier with a Lexan cover installed, preventing it from trying to hang up on the
zipper. A snug fitting Polarfleece type stuff bag or something like a thick sock would
offer about as much protection with minimal additional bulk, if one were going to carry
it packed away in a backpack, for example. For carrying just the KX3 and a few
accessories, on a bicycle, motorcycle or in the trunk of a vehicle, something like the
Pelican 1200 or a well padded photog type case or pack is probably the best insurance.
I've taken expensive camera radio gear off road on the back of a dual sport
motorcycle in Pelican 1200, 1300 1400 cases with no con

rns about the welfare of the contents.

73 de Dennis KD7CAC
Scottsdale, AZ

On Aug 18, 2014, at 5:27 PM, k...@qsl.net [KX3] k...@yahoogroups.com wrote:

Sorry, Jim, but there's no model number anywhere on or in the bag. I've owned
this bag for many years, so it's likely been discontinued. I used it to
transport an Icom 703 for a long time before I got the KX3. I just
reconfigured the dividers as required.

My suggestion is to visit a large camera store (the kind of place where professional photographers shop) and see what they have to offer. That's how I found my bag. Maybe look at the web sites of some of the big national camera stores, like B H Photo Video, Ritz Camera (where I buy a lot of my photo gear), and so on. Your bag is out there...

73/72,

Dean K5DH

__._,_.___
Posted by: k...@qsl.net

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Re: [Elecraft] [KX3] Case for KX3

My KX3 has the Sidekicks, Fred's heatsink, etc. 
Plenty of room, but not too much. A very good fit.


Phil W7OX

On 8/18/14, 6:51 PM, Phil Wheeler wrote:
I use a LowePro Nova 170 AW. Holds the KX3, 
batteries, etc.  Has a waterproof cover.


Phil W7OX

On 8/18/14, 6:21 PM, Dennis Griffin wrote:
LowePro does have a very good bag finder guide 
on their website, and the BestBuy in my area 
carries quite a few of their bags, if you don't 
have a larger camera shop in your area. I have 
used many of their products for a few decades 
and it's all holding up well. REI also has some 
of their bags, as well as some photog type bags 
from MountainSmith.


Seeing a few comments about them, I ordered a 
StrobeStuff bag from ThinkTank, but returned 
it. I felt it is far bulkier than need be and 
doesn't offer protection for much beyond light 
bumps or scrapes, and I found it clumsy to get 
a KX3 into it, even w/o heatsink, SideKX's or 
Lexan cover, because of the center opening 
zipper. Might have been easier with a Lexan 
cover installed, preventing it from trying to 
hang up on the zipper. A snug fitting 
Polarfleece type stuff bag or something like a 
thick sock would offer about as much protection 
with minimal additional bulk, if one were going 
to carry it packed away in a backpack, for 
example. For carrying just the KX3 and a few 
accessories, on a bicycle, motorcycle or in the 
trunk of a vehicle, something like the Pelican 
1200 or a well padded photog type case or pack 
is probably the best insurance. I've taken 
expensive camera  radio gear off road on the 
back of a dual sport motorcycle in Pelican 
1200, 1300  1400 cases with no con

ce

  rns about the welfare of the contents.

73 de Dennis KD7CAC
Scottsdale, AZ

On Aug 18, 2014, at 5:27 PM, k...@qsl.net [KX3] 
k...@yahoogroups.com wrote:


Sorry, Jim, but there's no model number 
anywhere on or in the bag.  I've owned this 
bag for many years, so it's likely been 
discontinued.  I used it to transport an Icom 
703 for a long time before I got the KX3.  I 
just reconfigured the dividers as required.


  My suggestion is to visit a large camera 
store (the kind of place where professional 
photographers shop) and see what they have to 
offer.  That's how I found my bag.  Maybe look 
at the web sites of some of the big national 
camera stores, like B  H Photo  Video, Ritz 
Camera (where I buy a lot of my photo gear), 
and so on.  Your bag is out there...


  73/72,

Dean K5DH


__._,_.___
Posted by: k...@qsl.net


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Re: [Elecraft] [KX3] Case for KX3

2014-08-18 Thread KD6QZX

Please look over the photos section, I have compiled a large array of carry 
options there.
 
Scott AK6Q  


On Monday, August 18, 2014 6:22 PM, Dennis Griffin-2 [via Elecraft] 
ml-node+s365791n7592337...@n2.nabble.com wrote:
  


LowePro does have a very good bag finder guide on their website, and the 
BestBuy in my area carries quite a few of their bags, if you don't have a 
larger camera shop in your area. I have used many of their products for a few 
decades and it's all holding up well. REI also has some of their bags, as well 
as some photog type bags from MountainSmith. 

Seeing a few comments about them, I ordered a StrobeStuff bag from ThinkTank, 
but returned it. I felt it is far bulkier than need be and doesn't offer 
protection for much beyond light bumps or scrapes, and I found it clumsy to get 
a KX3 into it, even w/o heatsink, SideKX's or Lexan cover, because of the 
center opening zipper. Might have been easier with a Lexan cover installed, 
preventing it from trying to hang up on the zipper. A snug fitting Polarfleece 
type stuff bag or something like a thick sock would offer about as much 
protection with minimal additional bulk, if one were going to carry it packed 
away in a backpack, for example. For carrying just the KX3 and a few 
accessories, on a bicycle, motorcycle or in the trunk of a vehicle, something 
like the Pelican 1200 or a well padded photog type case or pack is probably the 
best insurance. I've taken expensive camera  radio gear off road on the back 
of a dual sport motorcycle in Pelican 1200, 1300 
 1400 cases with no conce 
 rns about the welfare of the contents. 

73 de Dennis KD7CAC 
Scottsdale, AZ 

On Aug 18, 2014, at 5:27 PM, [hidden email] [KX3] [hidden email] wrote: 


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K3 #348 KX3 #2499
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Re: [Elecraft] [KX3] Case for KX3