date:20120218

The ad says it has a dynamic microphone. While that can be fine, IMX dynamic
mics vary widely in audio response and output level, unlike the ubiquitous
electret condenser mics that tend to have much higher output and an
extremely flat response. 

Also, it's clear the headband and earphone support is quite different from
the Yamaha. I've had nice-looking headphones that squeaked and rattled like
crazy in my ears whenever I moved due to the plastic parts rubbing against
each other. 

I'd consider any cash spent to test them strictly a gamble. 

Ron AC7AC

-Original Message-
That looks nice and costs only 50 Euro. Technical data's are ok.
Seems to be worth for a test.
The next higher version is also nice:
http://www.monacor.de/produkte/buehnen-und-dj-equipment/produktauflistung/pr
oduktdetailseite/?artikelid=133
73's Erwin/DK5EW

Am 18.02.2012 14:00, schrieb Win Kriegl DK9IP/KH7CD:
 http://www.monacor.de/en/product-detail-page/?artikelid=2961


 73 Win DK9IP

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Mic connector for Yamaha CM500 on K3

Griff,

For the K3, nothing is needed, just plug the 3.5mm stereo connectors 
into the rear panel mic and phones jacks.  Set the microphone  menu for 
rear panel with bias.

73,
Don W3FPR

On 2/18/2012 11:18 AM, N5AG wrote:
 Before I order the headset, I am curious as to what mic connector is provided
 if any? I am supposing an 8 pin connector is a required purchase for my K3,
 correct?

 Griff...N5AG

 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/Mic-connector-for-Yamaha-CM500-on-K3-tp7297190p7297190.html
 Sent from the Elecraft mailing list archive at Nabble.com.
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Does this headset look familiar ?

2012-02-18 Thread Mitch Wolfson DJØQN

Ron,

Have you taken a look at the Koss SB40 that someone also found? Does
this look any better?
http://www.amazon.de/Koss-SB40-KOSS-Headset-schwarz/dp/B5ML7T/ref=sr_1_1?ie=UTF8qid=1329567287sr=8-1

73,
Mitch DJ0QN

On 18.02.2012 18:02, Ron D'Eau Claire wrote:
The ad says it has a dynamic microphone. While that can be fine, IMX dynamic
mics vary widely in audio response and output level, unlike the ubiquitous
electret condenser mics that tend to have much higher output and an
extremely flat response.

Also, it's clear the headband and earphone support is quite different from
the Yamaha. I've had nice-looking headphones that squeaked and rattled like
crazy in my ears whenever I moved due to the plastic parts rubbing against
each other.

I'd consider any cash spent to test them strictly a gamble.

Ron AC7AC

-Original Message-
That looks nice and costs only 50 Euro. Technical data's are ok.
Seems to be worth for a test.
The next higher version is also nice:
http://www.monacor.de/produkte/buehnen-und-dj-equipment/produktauflistung/pr
oduktdetailseite/?artikelid=133
73's Erwin/DK5EW

Am 18.02.2012 14:00, schrieb Win Kriegl DK9IP/KH7CD:
http://www.monacor.de/en/product-detail-page/?artikelid=2961

73 Win DK9IP
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

In radio communications, it's been long understood that a male voice sounds
best with an audio response the rises in output gradually to about 2.5 kHz
before falling off again. 

The equalization controls allow you to adjust this response. 

Modern condenser electrets mics are usually flat from 100 Hz or so to out
over 15 kHz. The filters in the rig take care of suppressing the very low
and high frequencies and the equalizer is used to shape the response curve
in the transmitted audio range to suit your voice. 

Also, communications type dynamic microphones often have rather uneven
response curves. Some I've seen have way too much response below 500 or 600
Hz. The equalizer can be used to compensate for this response. 

And the XYs out there have a whole different voice. Actually, most of them
have a naturally better response curve but there are still a lot of
variations that the equalizer can help with.

73, Ron AC7AC

-Original Message-

Can anyone tell me what the benefits of TX equalization are?

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] CM500 mic connections

2012-02-18 Thread Allen Griffith

Thanks for the multiple replies.  Y'all make life easier!!

 

73,
GriffN5AG
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Mic connector for Yamaha CM500 on K3

Phil,

To match the Yamaha CM-500 to the K2, you can purchase the adapter used 
with the Proset-K2 - and wire the microphone configuration header just 
as for the Elecraft MH2 microphone - all pins jumper straight across and 
add the 5.6k bias resistor between mic jack pins 1 and 6.

I thought I had the part number for the adapter without the microphone, 
but I cannot find it, perhaps someone else will supply it.

Of course, an adapter should not be difficult to build yourself with a 
Foster plug and 2 jacks (one for the microphone and another for the PTT 
input jack.

73,
Don W3FPR

On 2/18/2012 12:01 PM, Phil Yates wrote:
 How would it match up to on the K2.

 Phil
 G7BZD

 On Sat, Feb 18, 2012 at 4:56 PM, Dick Dievendorffdie...@comcast.netwrote:

 You can plug the Yamaha CM500 microphone and headphone 3.5mm plugs directly
 into 3.5mm jacks on the back panel, and use the K3's SPKR+PH capability
 (which I have set up as PF1) to turn the speaker on and off. The K3 has a
 back panel RCA connector that you may use for something like a foot switch,
 if you prefer PTT.

 If you prefer a front panel microphone/headset connection, the Yamaha CM500
 comes with a 3.5mm to 1/4 phone plug adapter, and you can use something
 like the Heil Sound AD-1-K adapter (or a home-brew equivalent) that has an
 8
 pin foster plug, a 3.5mm jack for the microphone, and a 1/4 mono jack for
 a
 footswitch like the Heil Sound FS-3.   I prefer to keep the footswitch
 connector on the back panel, even if I'm using a front panel headset.

 73 de Dick, K6KR

 Before I order the headset, I am curious as to what mic connector is
 provided if any? I am supposing an 8 pin connector is a required purchase
 for my K3, correct?
 Griff...N5AG

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Yamaha CM500 Headset

2012-02-18 Thread Jaime P.Ullivarri

Hello,
I have a Yamaha CM500 and looks exactly as Koss SB40 but this one in EUis 
easy to get from Amazon and cheaper.
Both headphones have the same characteristics 120 ohm, 96 dB etc. and both 
have Dynamic Mic.
http://www.shopping.com/xSBS-Koss-Koss-SB-40-Headset-ear-cup-Yamaha-Yamaha-CM500-Headset-with-Built-In-Microphone~PRDLT-21312157-30843141

Well I have ordered a Koss SB40 and will see.
73.
Jaime, EA6NB. 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Yamaha CM500 / KOSS SB40

2012-02-18 Thread Malcolm

Can some one who has a pair of these tell me if there is any electronic noise 
reduction circuitry in the headphones or is it by physical isolation only 
please?

Sorry to be off topic 

Malcolm
G0MIC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Digital Audio File

2012-02-18 Thread Fausto Coletti

There is a way to download the audio file stored in the memory of the K3? 

73, Fausto IK4NMF
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Mic connector for Yamaha CM500 on K3

2012-02-18 Thread Dick Dievendorff

Heil Sound AD-1-K is the red adapter that has an 8-pin Foster microphone
connector, a 3.5 mm mono ack for the microphone, and a 1/4 mono jack for a
footswitch. It's suitable for a K3 as well as a K2 if you wire the
microphone configuration header appropriately.

The picture has the wrong color (it's really red), but this is the general
look of the adapter: http://www.hamradio.com/detail.cfm?pid=H0-003264

Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm
Sent: Saturday, February 18, 2012 10:10 AM
To: Phil Yates
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Mic connector for Yamaha CM500 on K3

Phil,

To match the Yamaha CM-500 to the K2, you can purchase the adapter used with
the Proset-K2 - and wire the microphone configuration header just as for the
Elecraft MH2 microphone - all pins jumper straight across and add the 5.6k
bias resistor between mic jack pins 1 and 6.

I thought I had the part number for the adapter without the microphone, but
I cannot find it, perhaps someone else will supply it.

Of course, an adapter should not be difficult to build yourself with a
Foster plug and 2 jacks (one for the microphone and another for the PTT
input jack.

73,
Don W3FPR

On 2/18/2012 12:01 PM, Phil Yates wrote:
 How would it match up to on the K2.

 Phil
 G7BZD

 On Sat, Feb 18, 2012 at 4:56 PM, Dick
Dievendorffdie...@comcast.netwrote:

 You can plug the Yamaha CM500 microphone and headphone 3.5mm plugs 
 directly into 3.5mm jacks on the back panel, and use the K3's SPKR+PH 
 capability (which I have set up as PF1) to turn the speaker on and 
 off. The K3 has a back panel RCA connector that you may use for 
 something like a foot switch, if you prefer PTT.

 If you prefer a front panel microphone/headset connection, the Yamaha 
 CM500 comes with a 3.5mm to 1/4 phone plug adapter, and you can use 
 something like the Heil Sound AD-1-K adapter (or a home-brew 
 equivalent) that has an
 8
 pin foster plug, a 3.5mm jack for the microphone, and a 1/4 mono 
 jack for a
 footswitch like the Heil Sound FS-3.   I prefer to keep the footswitch
 connector on the back panel, even if I'm using a front panel headset.

 73 de Dick, K6KR

 Before I order the headset, I am curious as to what mic connector is
 provided if any? I am supposing an 8 pin connector is a required 
 purchase for my K3, correct?
 Griff...N5AG

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest

2012-02-18 Thread Guy Olinger K2AV

If the UKeyer is showing the correct frequency, then the Ukeyer is talking
just fine to the K3,  and you need to be on the Wintest logger reflector.

Do not throw your K3 out the window or call Elecraft tech support.  K3 is
not involved.

Remove the USB cable from the Microham  Ukeyer
Shut down the Microham USB Device router program.
Do whatever Wintest requires to save the log (maybe nothing).
Shut down Wintest
Reinsert the USB cable to the Ukeyer.
Bring up the USB Device router.
Restart Wintest

It should work.  IMHO, the problem most likely was RF getting into your USB
cable.  Or you could have had a power blip, or any one of the million
things that could blip a program.

If it works, write these steps down and keep them visible, so you can do
them quickly without losing your run frequency.  Without changes to the
station layout and RF susceptibility, you are going to get a lot of
practice.

73, Guy.

On Sat, Feb 18, 2012 at 11:41 AM, Doug Turnbull turnb...@net1.ie wrote:

 Dear OMs and Yls,

  This may be slightly off topic but I at the heart of my operations is a K3
 and perhaps another of our number is using a similar arrangement for
 contesting and can give me a dig out.



 I am using a K3, Micro Keyer II and WInTest for contesting and all was
 working okay but no longer.   In both the CQWW 160M and ARRL CW DX tests
 the
 log is not following the K3.   If I change bands on the K3  the log does
 not
 follow the change.   If I change bands trying to use the up down band
 change
 arrows in WinTest the K3 does not follow these band changes.   The log is
 not displaying the frequency changes initiated by the VFO knob A of the K3.
 The MicroKeyer II under the PORT tab does show the correct K3 frequency and
 does track the K3 but it does not track the band changes of the UP Down
 Arrows used for band changing in WinTest.



  All cables look to be inserted correctly.

 I would be grateful for suggestions.   Thank you.



73 Doug EI2CN







 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Yamaha CM500 / KOSS SB40

2012-02-18 Thread Dick Dievendorff

My Yamaha CM500 does not include electronic noise reduction.   

The supplied battery box is for bias, and isn't required if you can get bias
elsewhere, like a PC microphone connector, or a K3 with microphone bias
turned on.

Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Malcolm
Sent: Saturday, February 18, 2012 10:18 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] Yamaha CM500 / KOSS SB40

Can some one who has a pair of these tell me if there is any electronic
noise reduction circuitry in the headphones or is it by physical isolation
only please?

Sorry to be off topic 

Malcolm
G0MIC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] KX3 report

2012-02-18 Thread Greg

Trying to get some operating time this weekend while doing school work.  
I am connected to N1MM with KX3 #14 and interfaced with my SO2R box.  No 
problems so far with N1MM using the K3 setting as expected.

I have the KX3 connected to an OB12/6 yagi at 50ft (high winds today) 
and running 5W.   Audio sounds great with the headphones.  K3 users will 
have no problems operating this radio.  So far on 15 I have worked a 
bunch of DX including ST2AR in a pile up and some EU stations.

One suggestion for folks who get this.  Make your interconnect cables 
from molded right angle plugs.  Right now I am using adapters from 1/4 
in down to 1/8 inch and while it works it may put too much strain on the 
internal sockets.

I have not tried SSB yet but I will later today when I get another break.



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] KX3 report

2012-02-18 Thread Wayne Burdick

Greg wrote:


 One suggestion for folks who get this.  Make your interconnect cables
 from molded right angle plugs.  Right now I am using adapters from 1/4
 in down to 1/8 inch

Hi Greg,

Good advice.

Note that all of the cables we supply -- power, PC, and mic -- come  
with molded right-angle plugs. We're also going to offer 2.5-mm  
adapter cables for use with the ACC2 and RX I/Q jacks.

Wayne
N6KR

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

2012-02-18 Thread Mike

I'm curious. Once set, why would you change eq settings, especially receive?

73, Mike NF4L

On 2/18/2012 10:32 AM, Art Nienhouse wrote:
 Agreed ... sure would like a command that could be used within a macro to
 change the RX EQ settings, like the one for transmit EQ.

 I do this with k3_ez with the eq page I have set to save several different 
 settings that can be sent to the k3 with a click of send to.
 I have labeled a couple of different settings to *save* in the k3_ez program 
 it only takes a moment to send all 8 settings to the k3 eq.

 This works for both RX eq and TX eq

 Regards
 Art
 ka9zap


 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Yamaha CM500 Headset

Jamie,

Without regard to what that ad states, the CM500 has an electret element 
- NOT a dynamic element.
I don't know about the Koss SB40, I could not find any reliable data, 
but they seem to be universally advertized as computer headset and 
since most if not all computer microphones are electret types, I suspect 
the SB40 is also electret type.

When you get yours, see if it works without bias - if so, it must be a 
dynamic type, but if it needs bias, it is an electret.

73,
Don W3FPR

On 2/18/2012 1:10 PM, Jaime P.Ullivarri wrote:
 Hello,
 I have a Yamaha CM500 and looks exactly as Koss SB40 but this one in EUis
 easy to get from Amazon and cheaper.
 Both headphones have the same characteristics 120 ohm, 96 dB etc. and both
 have Dynamic Mic.
 http://www.shopping.com/xSBS-Koss-Koss-SB-40-Headset-ear-cup-Yamaha-Yamaha-CM500-Headset-with-Built-In-Microphone~PRDLT-21312157-30843141

 Well I have ordered a Koss SB40 and will see.
 73.
 Jaime, EA6NB.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest


 The MicroKeyer II under the PORT tab does show the correct K3
 frequency and does track the K3 but it does not track the band
 changes of the UP Down Arrows used for band changing in WinTest.

Sounds like an issue with Win-Test not opening the CAT port in
microHAM Router correctly.  Have you checked the CAT settings
in Win-Test?  Is the CAT port shown as Open with the correct
communications parameters in microHAM Router?

Since Router is showing the correct frequency (and mode) from
the K3, the K3 and microHAM hardware appear to be operating
correctly.

73,

... Joe, W4TV


On 2/18/2012 11:41 AM, Doug Turnbull wrote:
 Dear OMs and Yls,

   This may be slightly off topic but I at the heart of my operations is a K3
 and perhaps another of our number is using a similar arrangement for
 contesting and can give me a dig out.



 I am using a K3, Micro Keyer II and WInTest for contesting and all was
 working okay but no longer.   In both the CQWW 160M and ARRL CW DX tests the
 log is not following the K3.   If I change bands on the K3  the log does not
 follow the change.   If I change bands trying to use the up down band change
 arrows in WinTest the K3 does not follow these band changes.   The log is
 not displaying the frequency changes initiated by the VFO knob A of the K3.
 The MicroKeyer II under the PORT tab does show the correct K3 frequency and
 does track the K3 but it does not track the band changes of the UP Down
 Arrows used for band changing in WinTest.



   All cables look to be inserted correctly.

 I would be grateful for suggestions.   Thank you.



  73 Doug EI2CN







 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Yamaha CM500 Headset

2012-02-18 Thread Gary K9GS

I live near Milwaukee where the Koss factory is located.  They have an 
outlet store.

I'll try to stop in there this week and see if I can try on a pair

Stay tuned...

BTW...one of the best kept secrets about Koss is that they will do 
lifetime repairs if their products fail.  I have a Koss headset that I 
use for CW that I have taken to the outlet store for repair several 
times.  They'll usually repair while you wait.  They also will sell you 
wear items like earpads for very low cost.  It's a great deal if you 
live close by..otherwise I think you have to pay shipping.

On 2/18/2012 5:05 AM, Peter Torry wrote:
 Many thanks everyone for your responses to my request.
 I am now investigating the Koss SB40 that appears to be similar to the Yamaha 
 headset.

 Regards

 Peter G3SMT
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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


-- 


73,

Gary K9GS

Check out K9NS on the web:  http://www.k9ns.com
Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Elecraft SSB net announcement

2012-02-18 Thread Phillip Shepard

The weekly Elecraft SSB net will meet tomorrow (2/19/12) at 1800Z on 14.3035
MHz +/- QRM. I will be net control from western Oregon, and we'll try relays
to pull in the stations that I can't hear.

See you there.

73,

Phil, NS7P

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest


  Remove the USB cable from the Microham  Ukeyer

If the ports tab is showing frequency and mode, there is no
reason to unplug the USB cable and/or restart Router.  The
issue must be in the application software - either the wrong
port is selected or the data communications parameters are
incorrect.

73,

... Joe, W4TV


On 2/18/2012 1:46 PM, Guy Olinger K2AV wrote:
 If the UKeyer is showing the correct frequency, then the Ukeyer is talking
 just fine to the K3,  and you need to be on the Wintest logger reflector.

 Do not throw your K3 out the window or call Elecraft tech support.  K3 is
 not involved.

 Remove the USB cable from the Microham  Ukeyer
 Shut down the Microham USB Device router program.
 Do whatever Wintest requires to save the log (maybe nothing).
 Shut down Wintest
 Reinsert the USB cable to the Ukeyer.
 Bring up the USB Device router.
 Restart Wintest

 It should work.  IMHO, the problem most likely was RF getting into your USB
 cable.  Or you could have had a power blip, or any one of the million
 things that could blip a program.

 If it works, write these steps down and keep them visible, so you can do
 them quickly without losing your run frequency.  Without changes to the
 station layout and RF susceptibility, you are going to get a lot of
 practice.

 73, Guy.

 On Sat, Feb 18, 2012 at 11:41 AM, Doug Turnbullturnb...@net1.ie  wrote:

 Dear OMs and Yls,

   This may be slightly off topic but I at the heart of my operations is a K3
 and perhaps another of our number is using a similar arrangement for
 contesting and can give me a dig out.



 I am using a K3, Micro Keyer II and WInTest for contesting and all was
 working okay but no longer.   In both the CQWW 160M and ARRL CW DX tests
 the
 log is not following the K3.   If I change bands on the K3  the log does
 not
 follow the change.   If I change bands trying to use the up down band
 change
 arrows in WinTest the K3 does not follow these band changes.   The log is
 not displaying the frequency changes initiated by the VFO knob A of the K3.
 The MicroKeyer II under the PORT tab does show the correct K3 frequency and
 does track the K3 but it does not track the band changes of the UP Down
 Arrows used for band changing in WinTest.



   All cables look to be inserted correctly.

 I would be grateful for suggestions.   Thank you.



 73 Doug EI2CN







 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP

After 2 weeks or so of happy operating of my newly assembled K2, Q7 exploded
with a loud snap.  From what I read here, I'm going to have to replace the
whole transmit transistor kit.  I did see that this failure has happened to
others, so I'd really like to hear if those who had the experience were able
to identify the cause of the problem.  Replacing the TX chain will be bad
enough--I don't want to have to do it a second time.

What's crazy here is that I wasn't in transmit mode when it happened. 
Actually, I had gone over to change taps on my ladder line tuner to change
bands.  There was a considerable static build-up on the antenna and I got a
small spark when I went to change a tap...and the Q7 let go at the same
time.  That could have been a complete coincidence. . .but it still seems
strange.  Any thoughts or experience regarding possible causes?

thanks,

George
N9AUP 

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Q7-failure-in-K2-tp7297576p7297576.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Yamaha CM500 Headset

2012-02-18 Thread Mitch Wolfson DJØQN

Thanks, Jaime, then I will let you play guinea pig instead of me and 
wait for your feedback.

73,
Mitch DJ0QN

On 18.02.2012 19:10, Jaime P.Ullivarri wrote:
 Hello,
 I have a Yamaha CM500 and looks exactly as Koss SB40 but this one in EUis
 easy to get from Amazon and cheaper.
 Both headphones have the same characteristics 120 ohm, 96 dB etc. and both
 have Dynamic Mic.
 http://www.shopping.com/xSBS-Koss-Koss-SB-40-Headset-ear-cup-Yamaha-Yamaha-CM500-Headset-with-Built-In-Microphone~PRDLT-21312157-30843141

 Well I have ordered a Koss SB40 and will see.
 73.
 Jaime, EA6NB.

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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


 -- 
 Mitch Wolfson
 DJØQN / K7DX
 Georg-Kerschensteiner-Str. 42, 81829 Muenchen, Germany
 Skype: mitchwo - Home:+49 89 32152700 - Mobile:+49 172 8374436
 Echolink: 3001 - IRLP: 5378
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Love at first site - KX-3

2012-02-18 Thread Keith Heimbold

Now I am really excited. I saw the KX-3 at the Yuma hamfest and it is a n 
absolute beauty. Also got to meet Eric, Lisa and the Elecraft gang. Really cool 
people.

Keith
AG6AZ

Sent from my iPhone please excuse typos
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest

2012-02-18 Thread Guy Olinger K2AV

I understand that.

HOWEVER,

Remove the USB cable from the Microham Ukeyer
Shut down the Microham USB Device router program.
Do whatever Wintest requires to save the log (maybe nothing).
Shut down Wintest
Reinsert the USB cable to the Ukeyer.
Bring up the USB Device router.
Restart Wintest

... is a general purpose recycle everything, that allows continuing the
contest without having to lose your run frequency, while with a
fatigue-handicapped mind, you try to figure out what the exact trouble is,
and skip a step.:)

73, Guy.

On Sat, Feb 18, 2012 at 3:00 PM, Joe Subich, W4TV li...@subich.com wrote:

Remove the USB cable from the Microham Ukeyer

If the ports tab is showing frequency and mode, there is no
reason to unplug the USB cable and/or restart Router. The
issue must be in the application software - either the wrong
port is selected or the data communications parameters are
incorrect.

73,

... Joe, W4TV

On 2/18/2012 1:46 PM, Guy Olinger K2AV wrote:

If the UKeyer is showing the correct frequency, then the Ukeyer is talking
just fine to the K3, and you need to be on the Wintest logger reflector.

Do not throw your K3 out the window or call Elecraft tech support. K3 is
not involved.

It should work. IMHO, the problem most likely was RF getting into your
USB
cable. Or you could have had a power blip, or any one of the million
things that could blip a program.

If it works, write these steps down and keep them visible, so you can do
them quickly without losing your run frequency. Without changes to the
station layout and RF susceptibility, you are going to get a lot of
practice.

73, Guy.

On Sat, Feb 18, 2012 at 11:41 AM, Doug Turnbullturnb...@net1.ie wrote:

Dear OMs and Yls,

This may be slightly off topic but I at the heart of my operations is a
K3
and perhaps another of our number is using a similar arrangement for
contesting and can give me a dig out.

I am using a K3, Micro Keyer II and WInTest for contesting and all was
working okay but no longer. In both the CQWW 160M and ARRL CW DX tests
the
log is not following the K3. If I change bands on the K3 the log does
not
follow the change. If I change bands trying to use the up down band
change
arrows in WinTest the K3 does not follow these band changes. The log is
not displaying the frequency changes initiated by the VFO knob A of the
K3.
The MicroKeyer II under the PORT tab does show the correct K3 frequency
and
does track the K3 but it does not track the band changes of the UP Down
Arrows used for band changing in WinTest.

All cables look to be inserted correctly.

I would be grateful for suggestions. Thank you.

73 Doug EI2CN

__**__**__
Elecraft mailing list
Home:
http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm
Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Q7 failure in K2

George,

First, you do not have to replace the entire RF transmit chain, only the 
two PA output transistors (Q7 and Q8) and the 2 2NAs that control 
the PA bias (Q11 and Q13).  Replace Q11 and Q13 first, and then measure 
the voltage on the PA transistor base solder pads during a TUNE - it 
should be between 0.61 and 0.64 volts.  If it is not in that range, do 
not install the PA transistors until that condition has been corrected 
or you will end up with a second set of failed PA transistors.

Yes, that static charge could have been a factor.  The real failure 
mechanism was either leakage in the Q7 PA transistor from the collector 
to the base which will drive a lot of current into the base and saturate 
the PA transistor.  It is not designed for that kind of switching 
service, so it will quickly explode with the high current and subsequent 
heat inside the transistor housing.
The other possibility is that Q11 or Q13 failed and increased the bias 
on Q7 and Q8 causing a swift increase in current through the PA 
transistors - with similar results.
OK, so that is how it happened, one can only speculate on the real root 
cause, but the static charge could have been a contributing factor.

Order the K2PAKIT from Elecraft - that kit has matched PA transistors.
Is this a K2/10 or is the KPA100 present?  If the KPA100 is present, I 
would suggest ordering 2 (or even 4) 1N5711 diodes (KPA100 D16 and 
D17).  Often with the KPA100 installed, static will destroy KPA100 D16 
and D17, and then the power tries to go to maximum because the K2 MCU 
thinks there is no power output - that attempt to drive at maximum power 
often damages one or both of the base K2 PA transistors.
Bottom line - if the KPA100 is installed, make certain the KPA100 
wattmeter diodes are good in addition to replacing the base K2 PA 
transistors.

73,
Don W3FPR

On 2/18/2012 3:17 PM, N9AUP wrote:
 After 2 weeks or so of happy operating of my newly assembled K2, Q7 exploded
 with a loud snap.  From what I read here, I'm going to have to replace the
 whole transmit transistor kit.  I did see that this failure has happened to
 others, so I'd really like to hear if those who had the experience were able
 to identify the cause of the problem.  Replacing the TX chain will be bad
 enough--I don't want to have to do it a second time.

 What's crazy here is that I wasn't in transmit mode when it happened.
 Actually, I had gone over to change taps on my ladder line tuner to change
 bands.  There was a considerable static build-up on the antenna and I got a
 small spark when I went to change a tap...and the Q7 let go at the same
 time.  That could have been a complete coincidence. . .but it still seems
 strange.  Any thoughts or experience regarding possible causes?

 thanks,

 George
 N9AUP

 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/Q7-failure-in-K2-tp7297576p7297576.html
 Sent from the Elecraft mailing list archive at Nabble.com.
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest

2012-02-18 Thread Doug Turnbull

Joe,
I found that the problem was with my Win-Test Setup, Options, Configure
Interfaces menu setup.   COM8 is my RADIO 1 port, which needs to be
configured as 38400 BPS, 8 data bits and 1 stop bit.   Somehow the
allocation had been dropped and data rate changed to 9600.   I tried
reconfiguring the K3 Config Menu for 9600 BPS but when I recycle power on
the K3 it always returns to 38400 so I have set the rate at 38400.   The
rate of 9600 had been used with an amplifier interface.   I will do what is
needed.   The whole system is now communicating.

 Thank you and all who replied.   I read all the messages and took them
all into account.   One person questioned the forum in which I was asking
the question but there needs to be some limit to the number of forums and
hardware, software, hardware integration issues are always chasing a tail.
As it turns out it was dependent on the K3 and I am very grateful that I
asked here and also appreciative of all the advice.   The gentleman who
questioned my using the Elecraft forum was however kind enough to also
provide useful guidance; so thanks to you all.   I am as always grateful and
happy with this forum and the help it provides.

  Oh joy a problem solved!!!   Yippee!!!   Mucho Gracias!!!

73 Doug EI2CN

-Original Message-
From: Joe Subich, W4TV [mailto:li...@subich.com] 
Sent: 18 February 2012 19:26
To: Doug Turnbull; Elecraft Reflector
Subject: Re: [Elecraft] [K3] Prob with K3, Micro Keyer II and WinTest


 The MicroKeyer II under the PORT tab does show the correct K3
 frequency and does track the K3 but it does not track the band
 changes of the UP Down Arrows used for band changing in WinTest.

Sounds like an issue with Win-Test not opening the CAT port in
microHAM Router correctly.  Have you checked the CAT settings
in Win-Test?  Is the CAT port shown as Open with the correct
communications parameters in microHAM Router?

Since Router is showing the correct frequency (and mode) from
the K3, the K3 and microHAM hardware appear to be operating
correctly.

73,

... Joe, W4TV


On 2/18/2012 11:41 AM, Doug Turnbull wrote:
 Dear OMs and Yls,

   This may be slightly off topic but I at the heart of my operations is a
K3
 and perhaps another of our number is using a similar arrangement for
 contesting and can give me a dig out.



 I am using a K3, Micro Keyer II and WInTest for contesting and all was
 working okay but no longer.   In both the CQWW 160M and ARRL CW DX tests
the
 log is not following the K3.   If I change bands on the K3  the log does
not
 follow the change.   If I change bands trying to use the up down band
change
 arrows in WinTest the K3 does not follow these band changes.   The log is
 not displaying the frequency changes initiated by the VFO knob A of the
K3.
 The MicroKeyer II under the PORT tab does show the correct K3 frequency
and
 does track the K3 but it does not track the band changes of the UP Down
 Arrows used for band changing in WinTest.



   All cables look to be inserted correctly.

 I would be grateful for suggestions.   Thank you.



  73 Doug EI2CN







 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Love at first site - KX-3

Keith,

I think you have committed yourself to a ride down the Elecraft Road - 
it is a pleasant journey with a lot of surprises.  Enjoy it.

73,
Don W3FPR

On 2/18/2012 3:29 PM, Keith Heimbold wrote:
 Now I am really excited. I saw the KX-3 at the Yuma hamfest and it is a n 
 absolute beauty. Also got to meet Eric, Lisa and the Elecraft gang. Really 
 cool people.

 Keith
 AG6AZ

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Sudden jump in SWR when power above 80 watts

I am having trouble with my K3 tuner, the SWR jumps high when I turn it above 
80 watts on 80m.  

At first I thought it was something outside but after replacing open wire 
feedline, balun, coax, I have come to the conclusion that the problem must be 
internal to the K3.  

The antenna is a 130' center fed dipole, fed with 45' of open wire to a 4:1 
balun and then to the K3.   It tunes easily and works okay on all the bands but 
on 80m, when I up the power above about 80 watts, the SWR jumps up and the K3 
shuts down with HI SWR.   

The problem does not happen with my old TS-440, nor does it happen when I 
bypass the internal K3 tuner and use an external Palstar AT2K tuner.

I don't believe I had this problem when I bought the K3 last December but then 
I might not have run the power up all the way either. 

Thoughts?  Am I missing something?Has anyone else had this same problem?  

Another thing I noticed (is it related?) is that when I tune the Palstar to 1:1 
SWR, the K3 shows a 2+:1 SWR.  If I use the K3 meter to tune the Palstar tuner, 
then the Palstar meter indicates a 2:1 SWR.  

Thanks,

Ken WA8JXM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

On 2/18/2012 11:11 AM, Mike wrote:
 I'm curious. Once set, why would you change eq settings, especially receive?

Different modes.  I have a group of settings I use for SSB that attempt 
to emulate the program in my hearing aids.  Not near enough for me but 
it's sure better than nothing.  If I set the lows for -16, I can set the 
higher frequencies up to + 16, turn up the overall gain, and get about 
32 db of net equalization [Thanks for that idea from K9YC].  3 times 
that would be perfect, but I can understand SSB on my K3 that I can't on 
the FT-847.

For CW, I try to get a peak around my sidetone [570 Hz] and roll the 
rest off to lower the perceived noise a little.  It makes a difference.

If I had a cable from the radio to the miniscule sockets the use to 
program my hearing aids, I wouldn't need the RX EQ :-)

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Digital Audio File

2012-02-18 Thread Rick Prather

You could play it into your computer and record it there.

Rick
K6LE

On 2/18/2012, at 10:19 , Fausto Coletti faustocole...@alice.it wrote:

 There is a way to download the audio file stored in the memory of the K3? 
 
 73, Fausto IK4NMF
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

2012-02-18 Thread Rick Prather

Ken,

Yes, I have the same problem.  

Using a 102' doublet, open wire to a 4:1 outside the shack.  

Works great everywhere above 160M but on 80 the SWR goes nuts over about 75 
Watts.  

My workaround has been to not run over 75 Watts  :-)

Rick
K6LE

On 2/18/2012, at 1:40 , Ken wa8...@gmail.com wrote:

 I am having trouble with my K3 tuner, the SWR jumps high when I turn it above 
 80 watts on 80m.  
 
 At first I thought it was something outside but after replacing open wire 
 feedline, balun, coax, I have come to the conclusion that the problem must be 
 internal to the K3.  
 
 The antenna is a 130' center fed dipole, fed with 45' of open wire to a 4:1 
 balun and then to the K3.   It tunes easily and works okay on all the bands 
 but on 80m, when I up the power above about 80 watts, the SWR jumps up and 
 the K3 shuts down with HI SWR.   
 
 The problem does not happen with my old TS-440, nor does it happen when I 
 bypass the internal K3 tuner and use an external Palstar AT2K tuner.
 
 I don't believe I had this problem when I bought the K3 last December but 
 then I might not have run the power up all the way either. 
 
 Thoughts?  Am I missing something?Has anyone else had this same problem?  
 
 Another thing I noticed (is it related?) is that when I tune the Palstar to 
 1:1 SWR, the K3 shows a 2+:1 SWR.  If I use the K3 meter to tune the Palstar 
 tuner, then the Palstar meter indicates a 2:1 SWR.  
 
 Thanks,
 
 Ken WA8JXM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

Ken,

A typical question when something like this arises is: What does it do 
if you drive a dummy load?.

While another transceiver handling your antenna situation may also be 
good to know, it does not satisfy the question of What does the K3 do 
when driving a 50 ohm resistive load.

The question of the difference in SWR readings between your Palstar 
tuner and the K3 cannot be answered without additional measurements 
driving a dummy load that produces a known SWR.

One thing you could do if you have an antenna analyzer is to tune the 
antenna tuner so the K3 indicates a 1:1 SWR - then remove the coax from 
the K3 and read the impedance on the analyzer.  Is it 50 + j0 or 
somewhat close?  If so, the K3 reading is correct, but if the SWR 
reading is 2:1. then your Palstar reading is correct.  If you have a 
substantial length of feedline between the K3 and the Palstar tuner, 
that might explain the difference in readings.

73,
Don W3FPR

On 2/18/2012 4:40 PM, Ken wrote:
 I am having trouble with my K3 tuner, the SWR jumps high when I turn it above 
 80 watts on 80m.

 At first I thought it was something outside but after replacing open wire 
 feedline, balun, coax, I have come to the conclusion that the problem must be 
 internal to the K3.

 The antenna is a 130' center fed dipole, fed with 45' of open wire to a 4:1 
 balun and then to the K3.   It tunes easily and works okay on all the bands 
 but on 80m, when I up the power above about 80 watts, the SWR jumps up and 
 the K3 shuts down with HI SWR.

 The problem does not happen with my old TS-440, nor does it happen when I 
 bypass the internal K3 tuner and use an external Palstar AT2K tuner.

 I don't believe I had this problem when I bought the K3 last December but 
 then I might not have run the power up all the way either.

 Thoughts?  Am I missing something?Has anyone else had this same problem?

 Another thing I noticed (is it related?) is that when I tune the Palstar to 
 1:1 SWR, the K3 shows a 2+:1 SWR.  If I use the K3 meter to tune the Palstar 
 tuner, then the Palstar meter indicates a 2:1 SWR.

 Thanks,

 Ken WA8JXM

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP

Thanks Don,

I've now pulled the remains of Q7 and also removed Q8.  I checked the bias
and it is at .64 volts and present at both base pads.  This is a K2/10, so
does that rule out the static antenna charge theory?  I have a sort of crude
transistor check which consists of connecting ohm meter - to emitter and +
to collector (NPN) then touching my finger across base and collector to see
if resistance decreases.  If that means anything in this case, then Q8
wasn't totally destroyed.  Of course, I'll buy the K2PAKIT and install the
matched pair.

I note that the receiver mode seems to be working just fine.  I pulled the
controller board and turned power on and off to do a relay reset per the
manual.  40 through 10 meters are open at the moment, the relays are
clicking and I have reception across the board so the relays/filters must be
ok.

Can you suggest anything else to check?

73,
George

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Q7-failure-in-K2-tp7297576p7297744.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

To be clear, Rick, is the KAT3 in BYPASS when you adjust the Palstar tuner?
It must be. Then, when you switch in the KAT3, you need to do a tune in
which it will adjust its settings to a 1:1 SWR on the link between the KAT3
and the Palstar. 

There's no advantage to having both tuners in the system. In normal use one
or the other should be in bypass. 

Does the power jump happened when feeding a dummy load? If not, then it's
certainly RF getting loose and triggering the power metering circuit in
the K3. That usually happens at some critical power level, which fits with
the SWR reported suddenly jumping above a specific power. Normally it's RF
on the outside of the coax shield that finds its way back to the K3. 

Often, using a remote tuner will cure that sort of problem by providing some
physical isolation between the K3 itself and the tuner in a separate box.

I suspect you have something in the range of 60 feet of open line feeding
your dipole. Such a feed line inverts the impedance. Since the dipole shows
a relatively low impedance at the center, that means the end of the feed
line in the shack has a very high impedance and high RF voltage. A 4:1 balun
can help but it's no panacea in the presence of high RF voltages. 

Ron AC7AC 


-Original Message-

Ken,

Yes, I have the same problem.  

Using a 102' doublet, open wire to a 4:1 outside the shack.  

Works great everywhere above 160M but on 80 the SWR goes nuts over about 75
Watts.  

My workaround has been to not run over 75 Watts  :-)

Rick
K6LE

On 2/18/2012, at 1:40 , Ken wa8...@gmail.com wrote:

 I am having trouble with my K3 tuner, the SWR jumps high when I turn it
above 80 watts on 80m.  
 
 At first I thought it was something outside but after replacing open wire
feedline, balun, coax, I have come to the conclusion that the problem must
be internal to the K3.  
 
 The antenna is a 130' center fed dipole, fed with 45' of open wire to a
4:1 balun and then to the K3.   It tunes easily and works okay on all the
bands but on 80m, when I up the power above about 80 watts, the SWR jumps up
and the K3 shuts down with HI SWR.   
 
 The problem does not happen with my old TS-440, nor does it happen when I
bypass the internal K3 tuner and use an external Palstar AT2K tuner.
 
 I don't believe I had this problem when I bought the K3 last December but
then I might not have run the power up all the way either. 
 
 Thoughts?  Am I missing something?Has anyone else had this same
problem?  
 
 Another thing I noticed (is it related?) is that when I tune the Palstar
to 1:1 SWR, the K3 shows a 2+:1 SWR.  If I use the K3 meter to tune the
Palstar tuner, then the Palstar meter indicates a 2:1 SWR.  
 
 Thanks,
 
 Ken WA8JXM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

Rick and all,

Look for something in the antenna system that is arcing over above the 
80 watt level (or whatever level the problem starts).  Check every 
junction in your antenna system.  Your workaround may be OK, but the 
real fix may increase your antenna efficiency.

The other situation that will cause bad behavior above a certain power 
level (and on a particular band) is common mode RF coming in from the 
antenna and its feedline.  The SWR sensing circuits may go crazy in 
the presence of too much RF voltage.  In this case, the use of common 
mode chokes at the antenna, and possibly at other points along the 
feedline may be what it takes to tame the beast.

73,
Don W3FPR

On 2/18/2012 5:14 PM, Rick Prather wrote:
 Ken,

 Yes, I have the same problem.

 Using a 102' doublet, open wire to a 4:1 outside the shack.

 Works great everywhere above 160M but on 80 the SWR goes nuts over about 75 
 Watts.

 My workaround has been to not run over 75 Watts  :-)

 Rick
 K6LE

 On 2/18/2012, at 1:40 , Kenwa8...@gmail.com  wrote:

 I am having trouble with my K3 tuner, the SWR jumps high when I turn it 
 above 80 watts on 80m.

 At first I thought it was something outside but after replacing open wire 
 feedline, balun, coax, I have come to the conclusion that the problem must 
 be internal to the K3.

 The antenna is a 130' center fed dipole, fed with 45' of open wire to a 4:1 
 balun and then to the K3.   It tunes easily and works okay on all the bands 
 but on 80m, when I up the power above about 80 watts, the SWR jumps up and 
 the K3 shuts down with HI SWR.

 The problem does not happen with my old TS-440, nor does it happen when I 
 bypass the internal K3 tuner and use an external Palstar AT2K tuner.

 I don't believe I had this problem when I bought the K3 last December but 
 then I might not have run the power up all the way either.

 Thoughts?  Am I missing something?Has anyone else had this same problem?

 Another thing I noticed (is it related?) is that when I tune the Palstar to 
 1:1 SWR, the K3 shows a 2+:1 SWR.  If I use the K3 meter to tune the Palstar 
 tuner, then the Palstar meter indicates a 2:1 SWR.

 Thanks,


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] To ground or not to ground

2012-02-18 Thread Clint

OK, this is OT, sort of. It will be connected to my K3 so..

I just bought a remote mast mounted antenna switch (Ameritron RSC-8V). It comes 
with the center conductor electrically floating when the port is OFF. It seems 
to me I would be better off (safer) if the center conductor was grounded (or 
had a gas discharge tube or choke or resistor or??? when OFF.

What do ya think?

One thing is for darn sure, I am going to paint the cruddy polystyrene box and 
steel brackets (with Rust Bullet  FYI), clean off the flux and coat the PC 
board before it sees the costal weather! Caulking will be in order also. Salty 
rain and spray are nasty even 5 miles in.

 73,

Clint

KI6SSN
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts


On Feb 18, 2012, at 5:35 PM, Don Wilhelm wrote:

 A typical question when something like this arises is: What does it do if 
 you drive a dummy load?.


Well, I don't have a true dummy load.   However, since the problem doesn't 
occur when letting the Palstar do the tuning (at either setting), I assume 
that's close enough to answer the question that it doesn't happen with a pure 
50 ohm load.

Ken WA8JXM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

No.   When I moved the balun inside, it went from a 30' length of coax to a 4' 
length.  No change in the SWR jump.

Likewise no difference in the jump when changing from a 4:1 to a 1:1 balun.

It's difficult to change the open wire feedline length:  If I shorten it, it 
won't reach the antenna, if I lengthen it, it performs poorly laying on the 
ground ;-)

I doubt that the 3' length of coax from the K3 to the Palstar makes a 2:1 SWR 
difference between the two tuners on 80m.  

Ken WA8JXM

On Feb 18, 2012, at 5:47 PM, Rick Bates wrote:

 I'll wager that if you change the length of the feedline or the coax from
 the balun, that you'll see different loads.  Which is pretty much what
 you're doing with the Palstar being external (adding more coax).

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Q7 failure in K2

George,

OK, do check D9 for possible damage, or if you have the KAT2 installed, 
there are wattmeter dides in that option that may have failed and could 
produce the same thing as damaged diodes in the KPA100.

I am not saying the above is your problem, but I am saying, do check - 
if you have a damaged power measurement component (RF Board D9 or KAT2 
wattmeter diodes), you could end up wiith a repeat failure (and that 
would not be nice).

Put the new 2Ns in anyway and then check the base solder pads of Q7 
and Q8 before installing Q7 and Q8.

If you do not have good de-soldering equipment - waste the component(s) 
by clipping off the leads and remove the leads one at a time.  Clean up 
the solder pads with solder wick and if the holes are not open, use a 
wooden toothpick or a stainless steel needle to open the holes if required.

73,
Don W3FPR

On 2/18/2012 5:39 PM, N9AUP wrote:
 Thanks Don,

 I've now pulled the remains of Q7 and also removed Q8.  I checked the bias
 and it is at .64 volts and present at both base pads.  This is a K2/10, so
 does that rule out the static antenna charge theory?  I have a sort of crude
 transistor check which consists of connecting ohm meter - to emitter and +
 to collector (NPN) then touching my finger across base and collector to see
 if resistance decreases.  If that means anything in this case, then Q8
 wasn't totally destroyed.  Of course, I'll buy the K2PAKIT and install the
 matched pair.

 I note that the receiver mode seems to be working just fine.  I pulled the
 controller board and turned power on and off to do a relay reset per the
 manual.  40 through 10 meters are open at the moment, the relays are
 clicking and I have reception across the board so the relays/filters must be
 ok.

 Can you suggest anything else to check?

 73,
 George

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts


On Feb 18, 2012, at 5:43 PM, Don Wilhelm wrote:

 Rick and all,
 
 Look for something in the antenna system that is arcing over above the 
 80 watt level (or whatever level the problem starts).  Check every 
 junction in your antenna system.  Your workaround may be OK, but the 
 real fix may increase your antenna efficiency.


That's where I first started.  I replaced the ancient twin lead with new open 
wire.  No change.  I replaced the 4:1 balun with a new 1:1 balun.  No change.

I replaced the coax to the balun.  No change.  I inspected the center 
insulator, that's a block of quarter inch PVC with everything separated at 
least two inches.  I checked the end insulators.  They look fine and they are 
tied to Dacron line.   The ONLY thing I didn't change is the antenna wire ;-)   

The antenna is in free space with the closest object being the antenna mast a 
foot away.

What did stop the problem is changing rigs (to a TS-440) or changing the 
antenna tuner (to the Palstar).   What's in common with the problem?  The K3. 



 
 The other situation that will cause bad behavior above a certain power 
 level (and on a particular band) is common mode RF coming in from the 
 antenna and its feedline.  The SWR sensing circuits may go crazy in 
 the presence of too much RF voltage.  In this case, the use of common 
 mode chokes at the antenna, and possibly at other points along the 
 feedline may be what it takes to tame the beast.


Now that sounds like a possibility.   

Ken WA8JXM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] Tuner Opinions Needed

2012-02-18 Thread Joel Black

My trusty LDG Z-100+ tuner died last night.  Luckily, it is one month 
before the end of the two-year warranty so I will be sending it back for 
repair.  In the mean time, I am without a tuner.  I do not know when (if 
ever) I'd buy an amp, so I do not need a high-power tuner.  I will be 
using the tuner with an Elecraft K3 and Genesis G59 with 10W amp (GPA10).

I have narrowed my selections down to the following:

LDG Electronics:
AT-100ProII
AT-200ProII

MFJ:
993B

I am *no* fan of MFJ.  I had a 949E that I never liked, the meters would 
never calibrate, and the DL was ~60ohms.  However, I like the Z-matching 
range and the SWR-matching range.  It also has the cross-needle meters 
(that wouldn't previously calibrate) and an LCD readout with multiple 
functions.  Also, I have since built a reliable, 100W 50ohm dummy load.

The Z-100Plus has problems tuning some freqs especially in wet weather.

The reviews on eham.net (read with a grain of salt) do not favor the 
AT-100ProII as much as the AT-200ProII and MFJ-993B.

Anyone have any experience (good or bad) with any of these tuners?  Are 
there any other recommendations (other than the KAT3)?
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq


 Also, communications type dynamic microphones often have rather
 uneven response curves. Some I've seen have way too much response
 below 500 or 600 Hz. The equalizer can be used to compensate for this
 response.

Electret (condenser) mics also show a bass boost when worked close as
with a headset or close talked hand mic.  That's why - in addition to
limiting hum and background noise - it's generally best to set the K3's
two lowest EQ bands to -16 and set 200 Hz to -6 or so.

Low frequencies contribute very little to intelligibility but consume
a lot of transmitter power.

73,

... Joe, W4TV


On 2/18/2012 12:47 PM, Ron D'Eau Claire wrote:
 In radio communications, it's been long understood that a male voice sounds
 best with an audio response the rises in output gradually to about 2.5 kHz
 before falling off again.

 The equalization controls allow you to adjust this response.

 Modern condenser electrets mics are usually flat from 100 Hz or so to out
 over 15 kHz. The filters in the rig take care of suppressing the very low
 and high frequencies and the equalizer is used to shape the response curve
 in the transmitted audio range to suit your voice.

 Also, communications type dynamic microphones often have rather uneven
 response curves. Some I've seen have way too much response below 500 or 600
 Hz. The equalizer can be used to compensate for this response.

 And the XYs out there have a whole different voice. Actually, most of them
 have a naturally better response curve but there are still a lot of
 variations that the equalizer can help with.

 73, Ron AC7AC

 -Original Message-

 Can anyone tell me what the benefits of TX equalization are?

 73,
 Tom
 Amateur Radio Operator N5GE
 ARRL Lifetime Member
 QCWA Lifetime Member


 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Tuner Opinions Needed

2012-02-18 Thread Joel Black

Sorry, I forgot to sign the previous...

Joel - W4JBB
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

Normal practice is to connect the ground to the station ground buss. The
station ground buss may be connected to a ground system at the base of the
tower or somewhere near the station, provided it is ALSO tied directly to
the AC mains ground for the structure. The point is to be certain there is
but ONE mains ground for the structure and the station **without** relying
on connections from the coax cables to the chassis to the mains outlet
ground. 

Also, external devices normally have a seamless enclosure with only one side
that opens for access to internal components. Normally it must be mounted
with the side that opens facing downward, so rain will not get inside.
Sealing such an enclosure is also possible, if you insist, but be sure to
provide plenty of desiccant inside to absorb the moisture that will condense
out of the air trapped inside unless you have an opening in the side facing
downward. Otherwise you'll see a huge amount of corrosion in spite of
sealing it against salt air. 

I would recommend calking only any seams that are facing to the sides or
upward. 

Also, it is very important to provide drip loops on all cables entering
the enclosure. Good designs have the connectors and any cable openings
facing down since they are not 100% water tight. Drip loops will form
naturally for any conductors coming from above. Be sure to run conductors
coming from below to a point above the unit, then loop back down to form a
drip loop. 

You guys in the warm climates really have it tough. Here on the Oregon coast
I'm a few hundred yards from the surf, close enough that it's a constant
background sound, and several times each winter we experience Cat 1 or 2
hurricane force winds blowing in off of the ocean, yet I have yet to
experience salt corrosion on anything. 

Ron AC7AC

 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Clint
Sent: Saturday, February 18, 2012 2:51 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] To ground or not to ground

OK, this is OT, sort of. It will be connected to my K3 so..

I just bought a remote mast mounted antenna switch (Ameritron RSC-8V). It
comes with the center conductor electrically floating when the port is OFF.
It seems to me I would be better off (safer) if the center conductor was
grounded (or had a gas discharge tube or choke or resistor or??? when OFF.

What do ya think?

One thing is for darn sure, I am going to paint the cruddy polystyrene box
and steel brackets (with Rust Bullet  FYI), clean off the flux and coat
the PC board before it sees the costal weather! Caulking will be in order
also. Salty rain and spray are nasty even 5 miles in.

 73,

Clint

KI6SSN

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Tuner Opinions Needed

2012-02-18 Thread Ian Kahn - Ham

I used the original AT-100Pro with my FT-857D for several years and 
really liked it.  For me, it did an admirable job.  I don't have any 
experience with the other two tuners.  In fact, my K3 (#281) has the 
KAT3 internal tuner.  One push tuning and I'm done.  No power 
adjustments to remember, and it takes about half a second (in my 
environment - YMMV) to tune.  It is internal to the K3, so doesn't take 
any more desk space, and is only slightly more expensive than the other 
two tuners you're considering.

Just my two cents' worth.

73,

--Ian

Ian Kahn, KM4IK
Roswell, GA
km4ik@gmail.com
K3 #281, P3 #688


On 2/18/2012 6:14 PM, Joel Black wrote:
 My trusty LDG Z-100+ tuner died last night.  Luckily, it is one month
 before the end of the two-year warranty so I will be sending it back for
 repair.  In the mean time, I am without a tuner.  I do not know when (if
 ever) I'd buy an amp, so I do not need a high-power tuner.  I will be
 using the tuner with an Elecraft K3 and Genesis G59 with 10W amp (GPA10).

 I have narrowed my selections down to the following:

 LDG Electronics:
 AT-100ProII
 AT-200ProII

 MFJ:
 993B

 I am *no* fan of MFJ.  I had a 949E that I never liked, the meters would
 never calibrate, and the DL was ~60ohms.  However, I like the Z-matching
 range and the SWR-matching range.  It also has the cross-needle meters
 (that wouldn't previously calibrate) and an LCD readout with multiple
 functions.  Also, I have since built a reliable, 100W 50ohm dummy load.

 The Z-100Plus has problems tuning some freqs especially in wet weather.

 The reviews on eham.net (read with a grain of salt) do not favor the
 AT-100ProII as much as the AT-200ProII and MFJ-993B.

 Anyone have any experience (good or bad) with any of these tuners?  Are
 there any other recommendations (other than the KAT3)?
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

Clint,

Not OT at all.  Many remote antenna switches do it the easy way, and 
use SPST relays to switch in the selected antenna - there is no way with 
that type relay to ground the antennas that are not currently selected.

So yes, some type of static discharge device would be beneficial across 
each antenna connector to bleed off static.  Usually a 100 uHy choke (of 
sufficient current capacity for your power level) or a 2 or 3 watt 
carbon resistor in the range of 3000 to 30,000 ohms will provide the DC 
path to bleed off any static charge.

Imagine your antenna with a static charge - then you select that antenna 
- suddenly your transceiver is subjected to whatever charge was on the 
antenna.  Sometimes OK, but other times, not so good.

73,
Don W3FPR

On 2/18/2012 5:51 PM, Clint wrote:
 OK, this is OT, sort of. It will be connected to my K3 so..

 I just bought a remote mast mounted antenna switch (Ameritron RSC-8V). It 
 comes with the center conductor electrically floating when the port is OFF. 
 It seems to me I would be better off (safer) if the center conductor was 
 grounded (or had a gas discharge tube or choke or resistor or??? when OFF.

 What do ya think?

 One thing is for darn sure, I am going to paint the cruddy polystyrene box 
 and steel brackets (with Rust Bullet  FYI), clean off the flux and coat the 
 PC board before it sees the costal weather! Caulking will be in order also. 
 Salty rain and spray are nasty even 5 miles in.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

Thanks to all of you who replied that you have also experienced the same issue. 
 I guess I am not alone!

Maybe Wayne or someone from Elecraft will contribute some info.

73, Ken WA8JXM

On Feb 18, 2012, at 5:14 PM, Rick Prather wrote:

 Yes, I have the same problem.  

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

On 2/18/2012 3:15 PM, Ron D'Eau Claire wrote:

 You guys in the warm climates really have it tough. Here on the Oregon coast
 I'm a few hundred yards from the surf, close enough that it's a constant
 background sound, and several times each winter we experience Cat 1 or 2
 hurricane force winds blowing in off of the ocean, yet I have yet to
 experience salt corrosion on anything.

Of course not, Ron!  It's so cold there, the NaCl is already 
crystallized out by the time it gets to your antenna.  By that time, 
it's practically distilled water, probably blowing horizontally. :-)

73,

Fred K6DGW
Auburn CA CM98lw

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

2012-02-18 Thread goldtr8

Sounds like my shack when I had RF problems.  Strange SWR was one of my 
problems also.

One thing I found is that I need to wind a big choke on the power leads 
into the K3 to stop a lot of my problems.  It was the last thing I did 
to fix issues.  I wish I would have know to start there :-)

~73
Don
KD8NNU


On Sat, Feb 18, 2012 at 6:09 PM, Ken wrote:

 On Feb 18, 2012, at 5:43 PM, Don Wilhelm wrote:

 Rick and all,

 Look for something in the antenna system that is arcing over above 
 the 80 watt level (or whatever level the problem starts).  Check 
 every junction in your antenna system.  Your workaround may be OK, 
 but the real fix may increase your antenna efficiency.


 That's where I first started.  I replaced the ancient twin lead with 
 new open wire.  No change.  I replaced the 4:1 balun with a new 1:1 
 balun.  No change.

 I replaced the coax to the balun.  No change.  I inspected the center 
 insulator, that's a block of quarter inch PVC with everything 
 separated at least two inches.  I checked the end insulators.  They 
 look fine and they are tied to Dacron line.   The ONLY thing I didn't 
 change is the antenna wire ;-)
 The antenna is in free space with the closest object being the antenna 
 mast a foot away.

 What did stop the problem is changing rigs (to a TS-440) or changing 
 the antenna tuner (to the Palstar).   What's in common with the 
 problem?  The K3.



 The other situation that will cause bad behavior above a certain 
 power level (and on a particular band) is common mode RF coming in 
 from the antenna and its feedline.  The SWR sensing circuits may go 
 crazy in the presence of too much RF voltage.  In this case, the use 
 of common mode chokes at the antenna, and possibly at other points 
 along the feedline may be what it takes to tame the beast.


 Now that sounds like a possibility.
 Ken WA8JXM
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

If you want to see a remote antenna switch that grounds all un-selected 
antennas, take a look at http://www.qsl.net/ei7ba/remote.htm
It is quite easy to homebrew your own remote antenna switch.

73,
Don W3FPR

On 2/18/2012 6:26 PM, Don Wilhelm wrote:
 Clint,

 Not OT at all.  Many remote antenna switches do it the easy way, and
 use SPST relays to switch in the selected antenna - there is no way with
 that type relay to ground the antennas that are not currently selected.

 So yes, some type of static discharge device would be beneficial across
 each antenna connector to bleed off static.  Usually a 100 uHy choke (of
 sufficient current capacity for your power level) or a 2 or 3 watt
 carbon resistor in the range of 3000 to 30,000 ohms will provide the DC
 path to bleed off any static charge.

 Imagine your antenna with a static charge - then you select that antenna
 - suddenly your transceiver is subjected to whatever charge was on the
 antenna.  Sometimes OK, but other times, not so good.

 73,
 Don W3FPR

 On 2/18/2012 5:51 PM, Clint wrote:
 OK, this is OT, sort of. It will be connected to my K3 so..

 I just bought a remote mast mounted antenna switch (Ameritron RSC-8V). It 
 comes with the center conductor electrically floating when the port is OFF. 
 It seems to me I would be better off (safer) if the center conductor was 
 grounded (or had a gas discharge tube or choke or resistor or??? when OFF.

 What do ya think?

 One thing is for darn sure, I am going to paint the cruddy polystyrene box 
 and steel brackets (with Rust Bullet  FYI), clean off the flux and coat 
 the PC board before it sees the costal weather! Caulking will be in order 
 also. Salty rain and spray are nasty even 5 miles in.


 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Sudden jump in SWR when power above 80 watts

One great solution is to put a good balanced link coupled antenna tuner 
between the transceiver and the parallel feedline.  I emphasize link 
coupled because that alone will stop common mode current.
You can homebrew one, or look for a Johnson Matchbox.

73,
Don W3FPR

On 2/18/2012 6:33 PM, gold...@charter.net wrote:
 Sounds like my shack when I had RF problems.  Strange SWR was one of my
 problems also.

 One thing I found is that I need to wind a big choke on the power leads
 into the K3 to stop a lot of my problems.  It was the last thing I did
 to fix issues.  I wish I would have know to start there :-)

 ~73
 Don

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

On 2/18/2012 3:14 PM, Joe Subich, W4TV wrote:

 Electret (condenser) mics also show a bass boost when worked close as
 with a headset or close talked hand mic.  That's why - in addition to
 limiting hum and background noise - it's generally best to set the K3's
 two lowest EQ bands to -16 and set 200 Hz to -6 or so.

While in college, I had a job for awhile at KPFA [FM] in Berkeley CA. 
They had one of those old RCA velocity mics [the sort of 
prismatic-shaped ones, fairly big] on the control board and one of my 
shifts was to sign the station on the air at 0600.  I discovered that, 
if I crawled right up to the mic while reading the sign-on script, I 
could sound like Johnny Cash instead of a 17 year old.  The effect was 
striking.  I think it's true of most mics, this one was just extreme.

I use a Heil Elecraft ProSet with the electret mic.  My Audio Elmer 
[K9YC] suggested setting the TX EQ:

0.05 -14
0.10 -10
0.20  -6
0.40  -2
0.80   0
1.60  +4
2.40  +6
3.20 +10

In SSB contests, if I don't get at least six unsolicited comments of 
great audio, I'm disappointed.  It happens all the time.  Of course, 
I'm no longer 17 either.  One of these days I'll have to get Rich, NU6T, 
to trade stations with me and listen to it myself.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

2012-02-18 Thread Phil Kane

On 2/18/2012 3:15 PM, Ron D'Eau Claire wrote:

 You guys in the warm climates really have it tough. Here on the Oregon coast
 I'm a few hundred yards from the surf, close enough that it's a constant
 background sound, and several times each winter we experience Cat 1 or 2
 hurricane force winds blowing in off of the ocean, yet I have yet to
 experience salt corrosion on anything. 

I formerly lived about 3 miles inland off the California coast
(Pacifica, San Francisco area) where the fog came in almost every day
and the salt would build up in the eye of the dipole insulators.
---
73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Q7 failure in K2

2012-02-18 Thread N9AUP

OK Don,

I pulled one leg of D9 and saw 54K forward and infinite reverse on the DVM
(no KAT2) so I'm guessing that's ok for a Schottky diode.  I just now
checked the tuner taps and the antenna was charged up pretty good. . .that's
amazing since there's hardly a breeze and it isn't below freezing out.  I
suppose my 35 foot linear loaded vertical dipole (with 6 foot capacitance
hats on on the far ends) is a pretty good static picker-upper.  Do you think
I could get away with a choke to ground, say 50 MH on each leg of the ladder
line on the antenna side of the tuner?  I guess I better do the math to
figure out what the impedance would be on each of the bands 40 thru 10
--although heaven only knows what the antenna impedance would be on each
band.  I guess I could always put the bleeder on the nominal 50 ohm side of
the tuner.

73,

George

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Q7-failure-in-K2-tp7297576p7297857.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] TX gain Calibration

2012-02-18 Thread Mike Anderson

I am trying to do the tx gain calibration. I am hooked into a 300w dummy dry 
dummy load. When I run the test it dies on the 17m band and says:

Tx Gain calibration failed because power readings did not converge to a 
consistent value

I really have no idea what this means, and I can't find any info on it anywhere.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Does this headset look familiar ?

2012-02-18 Thread Martin

These

http://www.monacor.de/de/JPG/1024/H/H2/H220300A.jpg

were on the ham market in DL some years ago, labeled *GB Sound* .They 
were equiped with Heil Mics (HC4 or 5, could choose).

It is pretty much the same as a Heil, even the Heil earpads
fit. The original earpads are covered with cheap plastic and wear out fast.
If mine was broken i would by this headset again, replace the mic if 
necessary and the earpads.


-- 

Ohne CW ist es nur CB..

73, Martin DM4iM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Tuner Opinions Needed

2012-02-18 Thread NZ0T

The KAT3 is an excellent internal tuner and if you don't plan on ever having
an amp why not get one?  If not there are a lot of good tuners out there.  I
would look for an L network tuner as they are more efficient and more broad
banded than the differential T units out there.  For high power work I have
an old Ten Tec 229 which is and L network unit and works really well.

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Tuner-Opinions-Needed-tp7297796p7297867.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] Q7 failure in K2

George,

I would advocate 100 uHy rather than 50 mHy - but for 40 thru 10 meters, 
50 uHy is OK.

If you really meant 50 millihenries, then yes that would be quite fine 
for providing a DC path for the lower bands, but there may be strange 
effects on the higher bands due to stray capacity.

73,
Don W3FPR

On 2/18/2012 7:02 PM, N9AUP wrote:
 OK Don,

 I pulled one leg of D9 and saw 54K forward and infinite reverse on the DVM
 (no KAT2) so I'm guessing that's ok for a Schottky diode.  I just now
 checked the tuner taps and the antenna was charged up pretty good. . .that's
 amazing since there's hardly a breeze and it isn't below freezing out.  I
 suppose my 35 foot linear loaded vertical dipole (with 6 foot capacitance
 hats on on the far ends) is a pretty good static picker-upper.  Do you think
 I could get away with a choke to ground, say 50 MH on each leg of the ladder
 line on the antenna side of the tuner?  I guess I better do the math to
 figure out what the impedance would be on each of the bands 40 thru 10
 --although heaven only knows what the antenna impedance would be on each
 band.  I guess I could always put the bleeder on the nominal 50 ohm side of
 the tuner.

 73,

 George


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq


After a career that started in the recording studio, spent time in
radio and then as a TV audio man before moving into management, I've
done a lot with voice equalization ...

  I use a Heil Elecraft ProSet with the electret mic.  My Audio Elmer
  [K9YC] suggested setting the TX EQ:
 
  0.05 -14
  0.10 -10
  0.20  -6
  0.40  -2
  0.80   0
  1.60  +4
  2.40  +6
  3.20 +10

Your numbers are remarkably similar to mine - particularly when you
compare 400 Hz to 1600 Hz and look at the 6dB/octave slope at the
high end:

  0.05 -16
  0.10 -16
  0.20  -6
  0.40  -0
  0.80  -3
  1.60  +6
  2.40 +10
  3.20 +12

I've always used a bit of a notch around 1 KHz.  Since most voices
have no energy in the 800 - 1200 Hz range, adding a notch makes any
system less susceptible to feedback and reduces noise pick-up without
compromising fidelity.  For both communications and PA applications
the notch also seems to aid in intelligibility by cutting down on any
noise in that range.

73,

... Joe, W4TV


On 2/18/2012 6:50 PM, Fred Jensen wrote:
 On 2/18/2012 3:14 PM, Joe Subich, W4TV wrote:

 Electret (condenser) mics also show a bass boost when worked close as
 with a headset or close talked hand mic.  That's why - in addition to
 limiting hum and background noise - it's generally best to set the K3's
 two lowest EQ bands to -16 and set 200 Hz to -6 or so.

 While in college, I had a job for awhile at KPFA [FM] in Berkeley CA.
 They had one of those old RCA velocity mics [the sort of
 prismatic-shaped ones, fairly big] on the control board and one of my
 shifts was to sign the station on the air at 0600.  I discovered that,
 if I crawled right up to the mic while reading the sign-on script, I
 could sound like Johnny Cash instead of a 17 year old.  The effect was
 striking.  I think it's true of most mics, this one was just extreme.

 I use a Heil Elecraft ProSet with the electret mic.  My Audio Elmer
 [K9YC] suggested setting the TX EQ:

 0.05 -14
 0.10 -10
 0.20  -6
 0.40  -2
 0.80   0
 1.60  +4
 2.40  +6
 3.20 +10

 In SSB contests, if I don't get at least six unsolicited comments of
 great audio, I'm disappointed.  It happens all the time.  Of course,
 I'm no longer 17 either.  One of these days I'll have to get Rich, NU6T,
 to trade stations with me and listen to it myself.

 73,

 Fred K6DGW
 - Northern California Contest Club
 - CU in the 2012 Cal QSO Party 6-7 Oct 2012
 - www.cqp.org

 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 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

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] K3 for sale

2012-02-18 Thread David Herring

Temporary conditions mandate that I offer up the following for sale:

K3/100 serial # 3019, equipped with
 KAT3
 KBPF3
 KXV3
 KIO3
 KNB3
 MH2
 KFL3A-6K
 KFL3A-2.7K
 KFL3A-500
 KFL3A-200

When new this cost somewhere around $2800. The rig is in excellent physical and 
functional shape.  I'm the original owner and this is a non-smoking environment.
I'm asking $2500 and I'll pay shipping to any of these 50 united states.  I'll 
take PayPal or postal money order.  I'll also entertain reasonable offers.

73  Aloha,
Dave, AH6TD

dave at ah6td dot com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] To ground or not to ground

Don makes an excellent point. And a really cheap and effective way to do it
is to put a resistor from each antenna hot side to ground. For a 50-ohm
transmission, 500 to 1000 ohms is fine. That will bleed off any charge
building up on the antenna but will be too high of a value to affect the
operation of the antenna. 

Ron AC7AC

-Original Message-

Clint,

Not OT at all.  Many remote antenna switches do it the easy way, and 
use SPST relays to switch in the selected antenna - there is no way with 
that type relay to ground the antennas that are not currently selected.

So yes, some type of static discharge device would be beneficial across 
each antenna connector to bleed off static.  Usually a 100 uHy choke (of 
sufficient current capacity for your power level) or a 2 or 3 watt 
carbon resistor in the range of 3000 to 30,000 ohms will provide the DC 
path to bleed off any static charge.

Imagine your antenna with a static charge - then you select that antenna 
- suddenly your transceiver is subjected to whatever charge was on the 
antenna.  Sometimes OK, but other times, not so good.

73,
Don W3FPR


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

This unwanted effect is largely avoided by using a communications mic
correctly - speaking *across* the front of it, not into it. A boom mic that
will reach the front of your face should be positioned *below* your mouth.
Note that most newer boom mics stop short of the mouth. That automatically
ensures you won't talk into it. 

Ron AC7AC

-Original Message-

On 2/18/2012 3:14 PM, Joe Subich, W4TV wrote:

 Electret (condenser) mics also show a bass boost when worked close as
 with a headset or close talked hand mic.  That's why - in addition to
 limiting hum and background noise - it's generally best to set the K3's
 two lowest EQ bands to -16 and set 200 Hz to -6 or so.

While in college, I had a job for awhile at KPFA [FM] in Berkeley CA. 
They had one of those old RCA velocity mics [the sort of 
prismatic-shaped ones, fairly big] on the control board and one of my 
shifts was to sign the station on the air at 0600.  I discovered that, 
if I crawled right up to the mic while reading the sign-on script, I 
could sound like Johnny Cash instead of a 17 year old.  The effect was 
striking.  I think it's true of most mics, this one was just extreme...
.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

[Elecraft] [K2] Hi Current...still

2012-02-18 Thread b . denley



After getting the HiCur message, I replaced the two PA transistors, the 
associated hardware, Q11 and Q13, and R50.  Unfortunately I stll get the same 
message:  HiCur when I press TUNE with power any higher than about 1.5 watts  
inot a 50 ohm dummy load.  Any have any ideas about what else might cause this 
problem? 



Brian KB1VBF 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

Well, you and Jim seem to move in the same audio circles.  I think you 
may be right, more the derivatives than the actual numbers, but mine 
sure work good.  I will confess, I had no idea what to do with all these 
TX and RX EQ #'s without help from my Elmer.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

On 2/18/2012 5:26 PM, Joe Subich, W4TV wrote:

 After a career that started in the recording studio, spent time in
 radio and then as a TV audio man before moving into management, I've
 done a lot with voice equalization ...

 Your numbers are remarkably similar to mine - particularly when you
 compare 400 Hz to 1600 Hz and look at the 6dB/octave slope at the
 high end:

0.05 -16
0.10 -16
0.20  -6
0.40  -0
0.80  -3
1.60  +6
2.40 +10
3.20 +12

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq

Ron:  Whatever made you think this was an unwanted effect? :-)  I 
loved it as soon as I figured it out! [Pgm Mgr didn't all that much but 
it was 0600 and he wasn't awake yet].  I loved it, Johnny Cash wasn't 
quite as famous then but he's the first person I can think of that I was 
trying to sound like ... deep baritone base -- 17 yr old, and it never 
came without that mic.  I was careful not to cough directly into it, it 
could have torn the ribbon out.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org

On 2/18/2012 6:48 PM, Ron D'Eau Claire wrote:
 This unwanted effect is largely avoided by using a communications mic
 correctly - speaking *across* the front of it, not into it.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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

Re: [Elecraft] RX eq