[Elecraft] Elecraft] P3

2011-07-03 Thread Johnny Siu
My first addict to band spectrum was my IC781 and later on the entire IC756 
family.


TNX  73,


Johnny VR2XMC

從︰ Rick Prather k6limae...@gmail.com
收件人︰ Clay Freinwald k...@blarg.net
副本(CC)︰ elecraft@mailman.qth.net
傳送日期︰ 2011年07月3日 (週日) 1:19 PM
主題︰ Re: [Elecraft] P3

Clay,

Very true!

Once you get used to using the P3 you can't imagine running without it.

Rick
K6LE

On 7/2/2011, at 9:06 , Clay Freinwald wrote:

 I don't contribute to this list very often...However, in this case, I feel I
 must.
 
 I operated FD with the W7DK this year and fellow K3 owner K7MO who brought 
 His K3 - AND - P3.  
 
 This was my first time using the P3 in a contest and was I every amazed at
 how
 Much I used it.  Operating 15 phone, I found that it was what I was looking
 at 
 All the time.  Looking for a place to call CQ...and especially late in the
 day 
 Looking for those that I had not worked.  What a great tool.
 
 Time to add one in my shack!  Have to order an additional cover from Rose
 too.
 
 Clay Freinwald, K7CR

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[Elecraft] Power Supply?

2011-07-03 Thread Edward R. Cole
I sure Elecraft can answer this better.  I would make a guess that 
power supplies in much equipment is bought from a vendor and 
installed as a module; the vendor having taken care of all necessary 
certifications.  Perhaps in high volume production the PS is ordered 
to the manufacturers spec but supplied by a vendor the makes power supplies.

The Basecom20 is sold by Motorola but it is identical to the Astron 
R20.  My guess Motorola contracts Astron to manufacture the power 
supply re-labled for Motorola to sell.

When I was making custom equipment I didn't build the power supply as 
it was cheaper to buy something off-shelf at wholesale.


73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubus...@gmail.com
==

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Re: [Elecraft] K3 Power Supply/Speaker

2011-07-03 Thread Joel Hallas
Here's a thought -- why not fill out the K-line with an S-line-like
speaker with room for a power supply, as Collins did. 

Of course, the K3 really wants to have two speakers -- especially if a sub
receiver is installed. So a power supply could go in one (possibly sized for
someone else's, if they really can't deal with certifications) and the 100
W, 2 m amplifier I've been looking for in the other! (hint, hint).

That way they would potentially sell more than if just going for the power
supply market.

Regards, Joel Hallas, W1ZR
Westport, CT


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Re: [Elecraft] OT: Anyone heard from Tom N0SS?

2011-07-03 Thread Bill W4ZV
Thanks to several who replied and it was really great news to learn Tom is
OK.  He sent me a note yesterday and said he hopes to be released from the
hospital soon...perhaps even today.  Meanwhile we should all keep him in our
prayers for a speedy and complete recovery.

73,  Bill

--
View this message in context: 
http://elecraft.365791.n2.nabble.com/OT-Anyone-heard-from-Tom-N0SS-tp6539156p6543023.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] K3 Power Supply/Speaker

2011-07-03 Thread W2BLC
Kind of hard to beat an Astron 35 for power and a pair of Behringer MS40 
speakers for audio.  Sure, they don't match - but they work well.
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Re: [Elecraft] OT: Anyone heard from Tom N0SS?

2011-07-03 Thread Tommy Alderman
Good news about N0SS! Thanks.

Tom - W4BQF


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill W4ZV
Sent: Sunday, July 03, 2011 7:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: Anyone heard from Tom N0SS?

Thanks to several who replied and it was really great news to learn Tom is
OK.  He sent me a note yesterday and said he hopes to be released from the
hospital soon...perhaps even today.  Meanwhile we should all keep him in our
prayers for a speedy and complete recovery.

73,  Bill

--
View this message in context:
http://elecraft.365791.n2.nabble.com/OT-Anyone-heard-from-Tom-N0SS-tp6539156
p6543023.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] UPDATE ON TOM HAMMOND, N0SS

2011-07-03 Thread K9ZTV
Those who saw Tom at Dayton undoubtedly knew he shouldn't have been 
there.  The nine-hour trip from Jefferson City, the four days at Hara, 
and the return drive nearly did him in.

After several weeks in the hospital for problems tangential but not 
directly related to his cancer, he is now at home benefiting from 
24-hour home health care, as much for the sake of his XYL, Jeri, (K0RPH, 
herself a Registered Nurse) as for his.

He is weak and requires assistance walking, but is no longer bed-fast 
and spends his day in a recliner in the living room.  Having lost 
significant weight, the goal now is to regain it plus the strength to 
resume normal living.  Treatments are to resume soon with his oncologist 
continuing to affirm a positive outcome.

As many of you know, Tom is an extraordinarily optimistic person when it 
comes to handling adversity and major illness.  Lesser men would have 
been dead twenty years ago.

Much of that resilience he attributes to the prayers of others.  They 
are most surely needed now.

73,

Kent Trimble, K9ZTV
Jefferson City, Missouri

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Re: [Elecraft] Power Supply?

2011-07-03 Thread Eugene Balinski
All,

   Please be advised that Astron supplies are generally
over rated.  The RS-20 is rated at 20A peak and 16A
continuous.  It is more like 12 -14 continuous.  I have
seen people try to use them at their continuous ratings,
only to have them fail.  The heat sinking is just not
there.  Be careful when using any of the supplies at their
top ratings.  If you need to use one at rated, then put a
good fan on the heat sink.  


73
K1NR



On Sun, 03 Jul 2011 00:17:46 -0800
 Edward R. Cole kl...@acsalaska.net wrote:
 I sure Elecraft can answer this better.  I would make a
 guess that 
 power supplies in much equipment is bought from a vendor
 and 
 installed as a module; the vendor having taken care of
 all necessary 
 certifications.  Perhaps in high volume production the PS
 is ordered 
 to the manufacturers spec but supplied by a vendor the
 makes power supplies.
 
 The Basecom20 is sold by Motorola but it is identical to
 the Astron 
 R20.  My guess Motorola contracts Astron to manufacture
 the power 
 supply re-labled for Motorola to sell.
 
 When I was making custom equipment I didn't build the
 power supply as 
 it was cheaper to buy something off-shelf at wholesale.
 
 
 73, Ed - KL7UW, WD2XSH/45
 ==
 BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
 EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
 DUBUS Magazine USA Rep dubus...@gmail.com
 ==
 

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[Elecraft] some strange behaviour with K144XV

2011-07-03 Thread Johnny Siu
Hello Group,
 
My k3 comes with K144XV internal 2m transverter.  I seldom used it in the 
past.  However, in my recent operation, I notice a strange behaviour.  There 
are occassions where I push the band bottom up to 2m, no RX and TX from the 
K144XV.
 
After power off the K3 as well as power off the powerr supply for a few 
seconds, the K144XV works again when I power it up.  Sometimes, when I switch 
on the 'SUB' for second RX, no RX and TX again.
 
At this moment, I am not sure what sort of sequence of buttons will lead to 
this happen.  However, each time, I can solve the problem by power off k3 
entirely for a few seconds.
 
I am still not quite sure how I can duplicate the problem but I just ask the 
K144XV users here for similar strange behaviour.
 
When the K144XV functions, it RX and TX beautifully.  I tried to shake the TMP 
cables connected to the internal transverter but could not duplicate the 
problem.
 
Any ideas?
 

TNX  73,


Johnny VR2XMC
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Re: [Elecraft] Power Supply?

2011-07-03 Thread Jim McDonald
I have an RS-20 but use an RS-35M dedicated to my K3.  I have it and my
SteppIR controller plugged into an APC 700VA UPS (from
http://www.refurbups.com/ ) to prevent loss of AC power from adversely
affecting the radio.

I leave both the UPS and RS-35M on and turn off the K3 with the front panel
switch.  Both are on a shelf under the table.

Jim N7US



-Original Message-

All,

   Please be advised that Astron supplies are generally
over rated.  The RS-20 is rated at 20A peak and 16A
continuous.  It is more like 12 -14 continuous.  I have
seen people try to use them at their continuous ratings,
only to have them fail.  The heat sinking is just not
there.  Be careful when using any of the supplies at their
top ratings.  If you need to use one at rated, then put a
good fan on the heat sink.  


73
K1NR



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Re: [Elecraft] Power Supply?

2011-07-03 Thread Andrew Moore
AC0H Someone thinks they're going to shoehorn the guts of an RS-20M into
a P3? Good luck! I don't think the transformer would fit much less the heat
sink.

Have a look inside one then.  The transformer is 3.75 inches tall, by 4.0 by
4.5.  The PCB with caps, etc. is 2 tall, by 3.75 by 3 by 3.75. (though I'm
not suggesting we ignore the need for proper air circulation).

You area correct about the heat sink - it appears to be the only part that's
too big and needs hacking. But that's why we're amateurs.

AC0H I'd hope Elecraft wouldn't waste time and resources on trying to
re-invent
the pretty much perfected power supply

Agreed. Not what I'm asking for - just a blank P3.  But it looks like the
real P3 has plenty room for this project.

--Andrew, NV1B
..
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[Elecraft] Tnx AK5X

2011-07-03 Thread r miles

Tnx for the photo link on the KPA500. I have a better understanding  of 
the amp now. Mine was factory built [ #66]. One of these days I'll do 
the power sets on HF. I've had mine 3 weeks. I've had so  much fun 
working DX on 6m I  haven't even  QSY'd !!

K9IL
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[Elecraft] Hex Key S/N E 0234

2011-07-03 Thread Tim Heasman
Hi,

I am having trouble locating spare finger pieces for this key.  I have tried 
Bencher suppliers in the UK, and none keep spares.
I have also e-mailed Bencher and to date not had a reply, perhaps they are on 
holiday.
Morse Express is the only place I have actually seen finger pieces for Bencher 
keys listed.
Any suggestions where else I might try?


73

Tim

GM4LMH
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[Elecraft] URL, vox questions

2011-07-03 Thread Mike
Has anyone had any success going to the URL on p. 250 of KE7X's book? When I 
enter 
http://www.ehow.com/computers/how_5232755_delete-clear-ports-use.html 
http://www.ehow.com/computers/I get redirected to 
http://www.ehow.com/computers/ .

I'm trying to set up VOX so random low level noise in the room doesn't trigger 
it. 
I'm using a Yamaha CM500 headset, and even breathing close to it triggers VOX. 
If I'm 
working AFSK, and the phones are on the upper shelf om my desk, the keyboard 
triggers it.

VOX gain is 9, antiVOX is 74. Have I just not gone far enough with one or both 
these 
settings? Anything else affect it?

73, Mike NF4L
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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Mike WA8BXN
If you are using headphones, antivox generally is not needed. It sounds like
the vox gain is just too high. Turn the adjustment to one end or the other
so nothing trips the vox. Then adjust the gain control to where it trips
when you are talking. 
 
This is based on generic vox setup. The antivox part is intended to cancel
out speaker audio getting into the microphone. 
 
73 - Mike WA8BXN 
 
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[Elecraft] KPA500 questions

2011-07-03 Thread Dave Perry
To all,

I've now had my KPA500 for almost three weeks.  I really love it -- especially 
how well it interfaces to the K3 and makes changing bands so easy.  I used it 
yesterday to make about 120 QSOs in the DL-DX RTTY contest.  I was running it 
at 400 watts instead of a full 500 just to be conservative as I continue to 
break it in.  I have also used it quite a bit on 6M and even worked EU three 
times from Western KY using just a dipole.

I do notice a few clicks and pings coming from the amp.  These normally occur 
after the fan has kicked on and off or when the Temp is dropping back down into 
the high 40's C.  I assume that these clicks and pings are the normal operation 
of certain relays inside the amp.  The pings occur less frequently, but are 
quite noticeable.

The temp of the finals in the amp tend to be around 39C in standby.  Once I 
begin operating at full power the temp rises quickly to the mid 50s C.  I think 
I have seen it as high as 56C.  The fan normally comes on at slow speed at 
around 48C and then kicks into medium or high speed at 55C.  The fans are very 
quite, but noticeable through my Heil headset.

The amp operates flawlessly otherwise, but I wanted to put this out to the 
group to make sure that the clicks and pings are normal.  I have only been 
running the amp at 250W on 6m.  I try not to exceed 30 W of drive power on any 
band.

I am most interested if the occasional clicks and pings are normal.

Thanks,

Dave, N4QS








Dave Perry, N4QS
3600 Savoy Circle
Paducah, KY  42001
USA
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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Jim McDonald
I get the same but I think this is the current URL for the web page he
meant:

http://www.ehow.com/how_7334056_delete-serial-_com_-ports.html 

Jim N7US



-Original Message-
Has anyone had any success going to the URL on p. 250 of KE7X's book? When I
enter 
http://www.ehow.com/computers/how_5232755_delete-clear-ports-use.html .

I'm trying to set up VOX so random low level noise in the room doesn't
trigger it. 
I'm using a Yamaha CM500 headset, and even breathing close to it triggers
VOX. If I'm 
working AFSK, and the phones are on the upper shelf om my desk, the keyboard
triggers it.

VOX gain is 9, antiVOX is 74. Have I just not gone far enough with one or
both these 
settings? Anything else affect it?

73, Mike NF4L



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[Elecraft] New to list; My first question

2011-07-03 Thread Larry, KB5HMU
Hello fellow Hams,

I'm new to the list and was referred by many from the Yahoo K3 group. Thank you.

I have been wanting a new radio for a while now and the K3 is at the top of my 
list. My current radio, a 706 MkIIG, has performed well for the last 11 years 
but my interest in weak signal 6 and 2 meter operation leaves quite a lot to be 
desired. I'm not the sort that runs out and buys the newest or latest (I'm 
still driving my 1991 Accord EX) so I want a radio that will last me 20 years 
or more. This is what really led me to K3 as it can be updated anytime. I have 
been looking at the SDR radios but I'm really a hands-on-the-knob kind of 
operator. At field day I watched a ham at his gigantic Flex 5000C and 23 
monitor. Very impressive at first sight but after watching for a while, I 
noticed that his entire operation was nothing more than continuous wrist 
motions with the mouse. Just don't think I can go there.

I hope to learn much more about the K3 as I bank away my extra dollars. It 
looks like I need to buy quite a few of the options to do the K3 the way I need 
(Ha-Ha: NEED) for my operations. Two meter board, ATU, DVR, a few filters and 
the Panadapter are a must for me.

Here's my first question to the group:
I enjoy 6 meters immensely and someone recommended that I buy the pre-amp. My 
understanding about the effectiveness of a VHF preamp is to amplify the highest 
signal, i.e. at the antenna, to give the lowest noise increase. The PR6 mounts 
at the radio. Wouldn't that be amplifying noise in a weak signal more than if 
it were mounted at the antenna?

Thanks,
Larry
KB5HMU
http://qrz.com/db/KB5HMU
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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Dave Hachadorian
Maybe you have the mic gain menu item set high?  It should be low 
with a typical electret mic like the CM-500.


Dave Hachadorian, K6LL
Big Bear Lake, CA




-Original Message- 
From: Mike
Sent: Sunday, July 03, 2011 10:34 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] URL, vox questions

Has anyone had any success going to the URL on p. 250 of KE7X's 
book? When I enter
http://www.ehow.com/computers/how_5232755_delete-clear-ports-use.html
http://www.ehow.com/computers/I get redirected to 
http://www.ehow.com/computers/ .

I'm trying to set up VOX so random low level noise in the room 
doesn't trigger it.
I'm using a Yamaha CM500 headset, and even breathing close to it 
triggers VOX. If I'm
working AFSK, and the phones are on the upper shelf om my desk, 
the keyboard triggers it.

VOX gain is 9, antiVOX is 74. Have I just not gone far enough 
with one or both these
settings? Anything else affect it?

73, Mike NF4L
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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Mike
Thanks, Mike

Lowering the gain to 5 is about right. I often have the external speakers on, 
and if 
I have the cans on the shelf, they're close to a speaker.

73, Mike

On 7/3/2011 1:48 PM, Mike WA8BXN wrote:
 If you are using headphones, antivox generally is not needed. It sounds like
 the vox gain is just too high. Turn the adjustment to one end or the other
 so nothing trips the vox. Then adjust the gain control to where it trips
 when you are talking.

 This is based on generic vox setup. The antivox part is intended to cancel
 out speaker audio getting into the microphone.

 73 - Mike WA8BXN




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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Mike
Thanks, Jim nailed it in one.

73, Mike

On 7/3/2011 1:55 PM, Jim McDonald wrote:
 I get the same but I think this is the current URL for the web page he
 meant:

 http://www.ehow.com/how_7334056_delete-serial-_com_-ports.html

 Jim N7US



 -Original Message-
 Has anyone had any success going to the URL on p. 250 of KE7X's book? When I
 enter
 http://www.ehow.com/computers/how_5232755_delete-clear-ports-use.html .

 I'm trying to set up VOX so random low level noise in the room doesn't
 trigger it.
 I'm using a Yamaha CM500 headset, and even breathing close to it triggers
 VOX. If I'm
 working AFSK, and the phones are on the upper shelf om my desk, the keyboard
 triggers it.

 VOX gain is 9, antiVOX is 74. Have I just not gone far enough with one or
 both these
 settings? Anything else affect it?

 73, Mike NF4L



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Re: [Elecraft] URL, vox questions

2011-07-03 Thread Mike
Good thought Dave. The gain mic gain is OK, it was the VOX gain too high.

73, Mike NF4L

On 7/3/2011 2:05 PM, Dave Hachadorian wrote:
 Maybe you have the mic gain menu item set high?  It should be low with a 
 typical 
 electret mic like the CM-500.


 Dave Hachadorian, K6LL
 Big Bear Lake, CA




 -Original Message- From: Mike
 Sent: Sunday, July 03, 2011 10:34 AM
 To: elecraft@mailman.qth.net
 Subject: [Elecraft] URL, vox questions

 Has anyone had any success going to the URL on p. 250 of KE7X's book? When I 
 enter
 http://www.ehow.com/computers/how_5232755_delete-clear-ports-use.html
 http://www.ehow.com/computers/I get redirected to 
 http://www.ehow.com/computers/ .

 I'm trying to set up VOX so random low level noise in the room doesn't 
 trigger it.
 I'm using a Yamaha CM500 headset, and even breathing close to it triggers 
 VOX. If I'm
 working AFSK, and the phones are on the upper shelf om my desk, the keyboard 
 triggers it.

 VOX gain is 9, antiVOX is 74. Have I just not gone far enough with one or 
 both these
 settings? Anything else affect it?

 73, Mike NF4L
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Re: [Elecraft] New to list; My first question

2011-07-03 Thread Alan Bloom
On Sun, 2011-07-03 at 11:02 -0700, Larry, KB5HMU wrote:

 Here's my first question to the group:
 I enjoy 6 meters immensely and someone recommended that I buy the
 pre-amp. My understanding about the effectiveness of a VHF preamp is
 to amplify the highest signal, i.e. at the antenna, to give the lowest
 noise increase. The PR6 mounts at the radio. Wouldn't that be
 amplifying noise in a weak signal more than if it were mounted at the
 antenna?

Yes, theoretically it is always better to put the preamp at the antenna
end of the feedline so that the noise figure is not degraded by the
feedline loss.  However, that is less of an issue on 6 meters than on
the higher VHF/UHF bands because:

(1) Coax cable loss is less at the lower frequency and 

(2) Background noise is higher on 6 meters so that a super-low noise
figure is not as necessary.

It depends on what you're doing.  If you are into 6 meter moonbounce or
you have a long and/or lossy feedline then a remote preamp would be
worthwhile.

Alan N1AL


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Re: [Elecraft] New to list; My first question

2011-07-03 Thread Fred Townsend
Larry much has been written about defining the signal to noise ratio of a
receiver. You might want to search on this subject. 

Hopefully I can simply things a bit. It is the designer's goal to get the
receiver noise lower than the ambient noise. Once that is done you are at
the mercy of the ambient noise. Likewise the design goal of a preamp is to
amplify the signal without increasing the noise figure. Sure the preamp
amplifies noise too. The key is the signal to noise ratio should not be
deteriorated by the preamp.

Now as to the location of the preamp. Yes ideally it is better at the
antenna. Many TV antennas have preamps at the antenna but TV systems are
receive only. If you are transceiving at antenna then whatever preamp you
use must tolerate your transmit power or somehow switch out the preamp on
transmit. Without going into detail preamps at the antenna are very
difficult to do if transmit signals are involved.

73

de Fred, AE6QL
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Larry, KB5HMU
Sent: Sunday, July 03, 2011 11:03 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] New to list; My first question

Hello fellow Hams,

I'm new to the list and was referred by many from the Yahoo K3 group. Thank
you.

I have been wanting a new radio for a while now and the K3 is at the top of
my list. My current radio, a 706 MkIIG, has performed well for the last 11
years but my interest in weak signal 6 and 2 meter operation leaves quite a
lot to be desired. I'm not the sort that runs out and buys the newest or
latest (I'm still driving my 1991 Accord EX) so I want a radio that will
last me 20 years or more. This is what really led me to K3 as it can be
updated anytime. I have been looking at the SDR radios but I'm really a
hands-on-the-knob kind of operator. At field day I watched a ham at his
gigantic Flex 5000C and 23 monitor. Very impressive at first sight but
after watching for a while, I noticed that his entire operation was nothing
more than continuous wrist motions with the mouse. Just don't think I can go
there.

I hope to learn much more about the K3 as I bank away my extra dollars. It
looks like I need to buy quite a few of the options to do the K3 the way I
need (Ha-Ha: NEED) for my operations. Two meter board, ATU, DVR, a few
filters and the Panadapter are a must for me.

Here's my first question to the group:
I enjoy 6 meters immensely and someone recommended that I buy the pre-amp.
My understanding about the effectiveness of a VHF preamp is to amplify the
highest signal, i.e. at the antenna, to give the lowest noise increase. The
PR6 mounts at the radio. Wouldn't that be amplifying noise in a weak signal
more than if it were mounted at the antenna?

Thanks,
Larry
KB5HMU
http://qrz.com/db/KB5HMU
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Re: [Elecraft] New to list; My first question

2011-07-03 Thread Tony Estep
On Sun, Jul 3, 2011 at 1:02 PM, Larry, KB5HMU kb5...@starlightsolar.comwrote:

 ...the K3 is at the top of my list...watched a ham at his gigantic Flex
 5000C and 23 monitor.continuous wrist motions with the mouse

===
Larry, this doesn't answer your question about the 6M pre-amp, but I would
make the following comment about the 23 monitor etc.

As an owner of both a K3 and a Flex radio, I'd point out that you can have
the best of both worlds by adding an LP-Pan and PSDR to a K3. I have exactly
the same 23 display on my K3 as on my Flex. And of course, I can click
around the band with the mouse just as I do with the Flex. You commented
that you like knobs and buttons, and so do I. The PSDR interface is okay for
zero-beat phone work, but I find it to be unsuited to working CW split.
Knobs and buttons are much better. You'll also find the K3 to be a better
performer all-around: a far superior ATU, better at digging out weak
signals, an incomparably superior keyer, etc.

Actually, there is a way to get an excellent physical interface to the Flex:
Tobias, DH1TW, has concocted a neat mod to the PSDR program that allows you
to use the Hercules MP3 DJ gadget to operate the radio. This sounds a bit
strange, but in fact it is wonderful. Not only does it overcome the foibles
of PSDR, but it turns out to be a really excellent ergonomic solution to
operating a ham transceiver. However, the Flex powers-that-be have offered
no encouragement or support to this splendid idea, so it has gotten traction
only with a small number of hard-core users like me. One of the great
reasons to own an Elecraft product is that the top guys are operating hams
who get on the air just like their customers do, and who listen and respond
to the needs and comments of users.

So get yourself a K3, and enjoy it for 20 years!

73,
Tony KT0NY
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[Elecraft] Elecraft SSB Net results (7/3/11)

2011-07-03 Thread Phillip Shepard
Propagation was poor again today.  Only a couple of stations were S9 here in
OR.  No discussions followed check-ins.  We had 25 participants over a 26
minute period.  Have a great July 4th.

Here is the list of participants.

Station NameQTH Rig S/N

KC5RY   George  TX  K3  5208
K8EAG   Gil MI  K3  99
KE5RBS  Kelvin  AR  K2  3162
K4GCJ   Gerry   NC  K3  1597
W4RKS   Jim AL  K3  3618
AC0NM   Glenn   ID  K3  2843
KA0NCR  Arnie   NE  K3  185
W0FMTerry   MO  K3  474
W7NMD   Palmer  AR  K3  3779
AE6IC   FredCA  K3  2241
K6EQRoger   CA  K3  4629
W0RSR   MikeCO  K2  5767
AL7CE   Terry   AK  K3  5137
NV5ERob TX  K3  1417
AA3CS   Chuck   MD  K3  4072
W6TUK   TuckCA  K3  3032
AE6NN   HansCA
KO5YKen NM  K3  4442
K5LAD   Jim OK  K3  1068
KB3FBR  Joe PA  K2  6178
KK7PLyleWA  K3  3036
W4PFM   PaulVA  K3  1673
KJ6MPT  Robert  CA  TS2000
KH6RC   Randy   HI  IC756Pro3
NS7PPhilOR  K3  1826

73,

Phil, NS7P

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Re: [Elecraft] Power Supply?

2011-07-03 Thread Bill K9YEQ
Jim,

I use my own custom UPS... and Astron SS30M with a Powergate PG40S tied to a
Marine GSM battery at 200 amp. I can lose power for quite a while and still
operate.  I think this is less costly than a dedicated UPS to handle the
full load for even a short period.  I do have an APS UPS for the PC's
printers, routers and AP's.  

73,
Bill
K9YEQ


-Original Message-


I have an RS-20 but use an RS-35M dedicated to my K3.  I have it and my
SteppIR controller plugged into an APC 700VA UPS (from
http://www.refurbups.com/ ) to prevent loss of AC power from adversely
affecting the radio.

I leave both the UPS and RS-35M on and turn off the K3 with the front panel
switch.  Both are on a shelf under the table.

Jim N7US


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Re: [Elecraft] Power Supply?

2011-07-03 Thread Edward R. Cole
Another example of reading the manual or in this case the info sheet.

I have run Basecom20 for a 50w VHF-FM radio for up to ten years 
onboard 200-foot oil field work boats.  I did have one croak but 
that might have been due to the highly regulated (joke) ships 
generator: 115vac +/- 50vac!  Ten years in continuous duty is not 
bad.  These look to be re-labeled Astron RS-20 PS and have been 
supplying multiple radios on a boats.  250w = 18 amps.  A 150w 
marine SSB will have a dc load of about 250w.

I use a 50A Tait PS (14.1 vdc) to power my home station 12volt 
needs.  The No. 6 welding wire supply line is fused at 30A at the 
radio table distribution point.  Been in service for about 9 
years.  This is a re-labeled Astron VM-50.

So, yes, I derate them about 60% for long-term service.

Ed - KL7UW

At 06:16 AM 7/3/2011, Eugene Balinski wrote:
All,

Please be advised that Astron supplies are generally
over rated.  The RS-20 is rated at 20A peak and 16A
continuous.  It is more like 12 -14 continuous.  I have
seen people try to use them at their continuous ratings,
only to have them fail.  The heat sinking is just not
there.  Be careful when using any of the supplies at their
top ratings.  If you need to use one at rated, then put a
good fan on the heat sink.


73
K1NR



On Sun, 03 Jul 2011 00:17:46 -0800
  Edward R. Cole kl...@acsalaska.net wrote:
  I sure Elecraft can answer this better.  I would make a
  guess that
  power supplies in much equipment is bought from a vendor
  and
  installed as a module; the vendor having taken care of
  all necessary
  certifications.  Perhaps in high volume production the PS
  is ordered
  to the manufacturers spec but supplied by a vendor the
  makes power supplies.
 
  The Basecom20 is sold by Motorola but it is identical to
  the Astron
  R20.  My guess Motorola contracts Astron to manufacture
  the power
  supply re-labled for Motorola to sell.
 
  When I was making custom equipment I didn't build the
  power supply as
  it was cheaper to buy something off-shelf at wholesale.
 
 
  73, Ed - KL7UW, WD2XSH/45
  ==
  BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
  EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
  DUBUS Magazine USA Rep dubus...@gmail.com
  ==
 
 
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Web mail provided by NuNet, Inc. The Premier National provider.
http://www.nni.com/


73, Ed - KL7UW, WD2XSH/45
==
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-?
DUBUS Magazine USA Rep dubus...@gmail.com
==

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Re: [Elecraft] Power Supply?

2011-07-03 Thread Jim Brown
On 7/3/2011 2:09 PM, Bill K9YEQ wrote:
 I use my own custom UPS... and Astron SS30M with a Powergate PG40S tied to a
 Marine GSM battery at 200 amp.

Yes, I've done exactly this, but with a different battery and PSU, for 
about 8 years. My battery is a PAIR of the biggest deep cycle units that 
Costco sells (for about $75 each).  They last about four years.  This 
setup got me through Field Day with a K3 QRP for 19 hours on the air, 
with plenty of battery left at the end (I pulled the charger before FD 
started).

73, Jim K9YC
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[Elecraft] K3 DVR question

2011-07-03 Thread Dr. Werner Furlan
I am using the K3 DVR to record the received audio and play it back to the OM 
on the other side 
to give him an impression of his audio. Usually third party listeners told me 
that the recorded 
audio sounded nearly equal to the original, but last week I recorded a ham 
friend very close to 
me and the replay sounded a little distorted when I retransmitted it. It 
sounded very good in my 
monitor though. I have seen that the ALC meter was quite high when I replayed 
the recorded 
audio, and it could not be influenced by my mic gain and comp setting. 
Is this normal and intended?

73! de Werner OE9FWV

-- 
Meine Frau ist mit meinem Hund abgehauen. Ich vermisse ihn sehr...


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[Elecraft] Zipper Noise and Birdies on 6M -- FIXED!

2011-07-03 Thread Jim Brown
Ever since I started using my K3 on 6M I've been troubled with zipper 
noise as I tune, as well as birdies generated within the K3 that move 
around as I tune.  Today I found and eliminated the coupling mechanism, 
and the noise and birdies are gone.

My setup uses an external ARR 6M preamp at the RXOUT / RXIN patch point. 
(I use it rather than the Elecraft preamp because I already owned it, 
and it's a very good preamp). I also have a switch that brings in my 
Beverages,  with a Tee jumper between the AUX input (for the SUB RX) and 
the RXIN.  That Tee was the coupling path. On a hunch, I replaced the 
Tee with a Mini-Circuits passive splitter that has about 35dB of 
isolation between outputs, with an insertion loss of 6.6 dB.  It's rated 
for use between 10 MHz and 1 GHz, but it passes my Beverages on 160M 
just fine.

Mini-Circuits is an old line, well respected company based in Brooklyn. 
I've been specifying their splitters for about 30 years for the VHF and 
UHF wireless mic systems I designed for performance facilities and 
churches.  The splitter I used with the K3 is a ZFSC-4-175 that is one 
of several I picked up at a hamfest.  While it's a 75 ohm splitter, it 
works just fine in this application.  It's a 4x1 splitter, and a 2x1 
would work equally well.  For optimum isolation, unused outputs should 
be terminated in 75 ohms, and I did that.

http://www.minicircuits.com/pdfs/ZFSC-4-175.pdf

http://www.minicircuits.com/pdfs/ZFSC-2-1+.pdf

El cheapo CATV splitters MAY also work -- IF they have enough isolation.

73, Jim Brown K9YC
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Re: [Elecraft] Power Supply?

2011-07-03 Thread Bill K9YEQ
Mine is in place for around 3 years. I keep the supply set at 14.1 volts
with the proper jumper on the PWRgate.

73,
Bill
K9YEQ


-Original Message-


Yes, I've done exactly this, but with a different battery and PSU, for about
8 years. My battery is a PAIR of the biggest deep cycle units that Costco
sells (for about $75 each).  They last about four years.  This setup got me
through Field Day with a K3 QRP for 19 hours on the air, with plenty of
battery left at the end (I pulled the charger before FD started).

73, Jim K9YC

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Re: [Elecraft] Power Supply?

2011-07-03 Thread Ron D'Eau Claire
Also note that the Astron 20A rating is actually the ICS or Intermittent
Commercial Service rating. OTs recognize this as the former ICAS rating
when Amateur was included in the designation. 

IIRC, ICS is based on five minutes at full current and five minutes on
standby. 

Running SSB, CW and *some* digital modes, the actual load is much, much
less. SSB, for example, draws peak current only on voice peaks and, of
course, CW draws peak current only so long as the key is closed. 

Now, hammering out a digital mode such as RTTY at 100% power for long
transmission is a different story - and often well beyond the capabilities
of the transmitter anyway. 

Airflow and environment are important too. In commercial repeater service we
seldom crowded the specs, especially when the system was in a building full
of repeater gear where the temps around the power supply might exceed 100F
in spite of air conditioning. Even so, dozens of Astrons ran year after year
without a hitch. I cannot recall finding one dead. 

And then there's the Ham station I saw one time where the power supply was
sitting on the floor - directly on top of a heating vent! 

I've been running the home station from an Astron 20 for about 10 years now
- a K2/100 and then the K3/100. It handles either rig to full output with
current to spare. I am a 99.9% brass pounder.  

Ron AC7AC

-Original Message-

Another example of reading the manual or in this case the info sheet.

I have run Basecom20 for a 50w VHF-FM radio for up to ten years 
onboard 200-foot oil field work boats.  I did have one croak but 
that might have been due to the highly regulated (joke) ships 
generator: 115vac +/- 50vac!  Ten years in continuous duty is not 
bad.  These look to be re-labeled Astron RS-20 PS and have been 
supplying multiple radios on a boats.  250w = 18 amps.  A 150w 
marine SSB will have a dc load of about 250w.

I use a 50A Tait PS (14.1 vdc) to power my home station 12volt 
needs.  The No. 6 welding wire supply line is fused at 30A at the 
radio table distribution point.  Been in service for about 9 
years.  This is a re-labeled Astron VM-50.

So, yes, I derate them about 60% for long-term service.

Ed - KL7UW

At 06:16 AM 7/3/2011, Eugene Balinski wrote:
All,

Please be advised that Astron supplies are generally
over rated.  The RS-20 is rated at 20A peak and 16A
continuous.  It is more like 12 -14 continuous.  I have
seen people try to use them at their continuous ratings,
only to have them fail.  The heat sinking is just not
there.  Be careful when using any of the supplies at their
top ratings.  If you need to use one at rated, then put a
good fan on the heat sink.


73
K1NR

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Re: [Elecraft] Zipper Noise and Birdies on 6M -- FIXED!

2011-07-03 Thread Jim Brown
On 7/3/2011 3:42 PM, Merv Schweigert wrote:
 Ever since I started using my K3 on 6M I've been troubled with zipper
 noise as I tune, as well as birdies generated within the K3 that move
 around as I tune.  Today I found and eliminated the coupling mechanism,
 and the noise and birdies are gone. 

Sorry team, I spoke too soon.  Turns out the zipper noise was swamped by 
band noise when I tested after making the change. It's still there, a 
bit weaker. Most of the birdies are weaker, and a very loud one is gone. 
So the isolation of the splitter helps, but is not a complete fix.

73, Jim K9YC

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Re: [Elecraft] Zipper Noise and Birdies on 6M -- FIXED!

2011-07-03 Thread John_N1JM
How old is your radio? Isn't there an Elecraft mod for that?

John N1JM

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View this message in context: 
http://elecraft.365791.n2.nabble.com/Zipper-Noise-and-Birdies-on-6M-FIXED-tp6544327p6544537.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Power Supply?

2011-07-03 Thread Dave Ingram
I use the Powerwerx 30A switching power supply. It is switchable voltage and
takes an IEC lead, so there is no problem using it here in Australia. The 25A
continuous rating is well suited to the K3 with the PA. It takes up almost no
bench space and is only 3lbs. The dimensions are 6.1 x 5 x 2.5 in (154mm long,
127mm wide, 63mm tall).

The powerpole connections on the front really make it easy to use with the K3.

The cooling fans are off by default and it takes a lot of transmitting before
they spin up. Using a UHF/VHF mobile at 10W doesn't get the fans going, but my
old GME (Australian brand) switching radio PSU would fire up the fans with 5W
transmit and was noisy. This PSU is pretty quiet, and will make field
transport a breeze. I haven't found any extra RF interference from it (over
and above a gel cell), but I live in an urban area and so the background noise
is pretty bad.

I don't have any relationship with the supplier, other than being a happy
customer.


Dave.

-- 
David Ingram (VK4TDI)
Brisbane, Queensland, Australia
To avoid spam trap, send email to dave at ingramtech dot com

GPG: B0731AED
W: http://ingramtech.com/
MH: QG62lm



On 4/07/2011 9:15, Ron D'Eau Claire wrote:
 Also note that the Astron 20A rating is actually the ICS or Intermittent
 Commercial Service rating. OTs recognize this as the former ICAS rating
 when Amateur was included in the designation. 

 IIRC, ICS is based on five minutes at full current and five minutes on
 standby. 

 Running SSB, CW and *some* digital modes, the actual load is much, much
 less. SSB, for example, draws peak current only on voice peaks and, of
 course, CW draws peak current only so long as the key is closed. 

 Now, hammering out a digital mode such as RTTY at 100% power for long
 transmission is a different story - and often well beyond the capabilities
 of the transmitter anyway. 

 Airflow and environment are important too. In commercial repeater service we
 seldom crowded the specs, especially when the system was in a building full
 of repeater gear where the temps around the power supply might exceed 100F
 in spite of air conditioning. Even so, dozens of Astrons ran year after year
 without a hitch. I cannot recall finding one dead. 

 And then there's the Ham station I saw one time where the power supply was
 sitting on the floor - directly on top of a heating vent! 

 I've been running the home station from an Astron 20 for about 10 years now
 - a K2/100 and then the K3/100. It handles either rig to full output with
 current to spare. I am a 99.9% brass pounder.  

 Ron AC7AC

 -Original Message-

 Another example of reading the manual or in this case the info sheet.

 I have run Basecom20 for a 50w VHF-FM radio for up to ten years 
 onboard 200-foot oil field work boats.  I did have one croak but 
 that might have been due to the highly regulated (joke) ships 
 generator: 115vac +/- 50vac!  Ten years in continuous duty is not 
 bad.  These look to be re-labeled Astron RS-20 PS and have been 
 supplying multiple radios on a boats.  250w = 18 amps.  A 150w 
 marine SSB will have a dc load of about 250w.

 I use a 50A Tait PS (14.1 vdc) to power my home station 12volt 
 needs.  The No. 6 welding wire supply line is fused at 30A at the 
 radio table distribution point.  Been in service for about 9 
 years.  This is a re-labeled Astron VM-50.

 So, yes, I derate them about 60% for long-term service.

 Ed - KL7UW

 At 06:16 AM 7/3/2011, Eugene Balinski wrote:
 All,

Please be advised that Astron supplies are generally
 over rated.  The RS-20 is rated at 20A peak and 16A
 continuous.  It is more like 12 -14 continuous.  I have
 seen people try to use them at their continuous ratings,
 only to have them fail.  The heat sinking is just not
 there.  Be careful when using any of the supplies at their
 top ratings.  If you need to use one at rated, then put a
 good fan on the heat sink.


 73
 K1NR
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[Elecraft] [P3] Beta 1.08 bug?

2011-07-03 Thread Jim McDonald
I was experimenting with moving the VFO A frequency to the left side of the
display for PSK (a mode I don't normally use) and think I found a bug.

I set the span to 4 kHz, and the left side of the display shows the correct
VFO A frequency, 14070.0, and the right side correctly shows 14074.0, but
the center shows 14070.0 instead of 14072.2.

I saved a screenshot of the display with P3 Utility in case anyone wants to
see it.

Jim N7US




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[Elecraft] P3 Wanted

2011-07-03 Thread Charles Tifft
Probably a pipe dream, but anybody got a P3 they want to part with ? 
Other than Elecraft..
73's
Chuck
W6RD

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Re: [Elecraft] [P3] Beta 1.08 bug?

2011-07-03 Thread n5ge

Hi Jim,

I set my P3 Span at 4KHz and set the rig frequency at 14.070 and I get different
results:

Left  : 14.068.00
Center: 14.070.00
Right : 14.072.00

What am I missing in your post?

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


On Sun, 3 Jul 2011 20:43:34 -0500, Jim McDonald j...@n7us.net wrote:

I was experimenting with moving the VFO A frequency to the left side of the
display for PSK (a mode I don't normally use) and think I found a bug.

I set the span to 4 kHz, and the left side of the display shows the correct
VFO A frequency, 14070.0, and the right side correctly shows 14074.0, but
the center shows 14070.0 instead of 14072.2.

I saved a screenshot of the display with P3 Utility in case anyone wants to
see it.

Jim N7US




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