Re: [Elecraft] New Contest Transceiver [OT]

2008-03-19 Thread Dave Lowenstein
There is way less casual CW operation than there was in '79, '89, and
even '99.  Except for contesting and DXing, CW is close to being dead. 
Foreign phones, RTTY  data stations in the lower portions of the CW
bands and the ARRL/FCC elimination of CW-testing will finish it off.  If
I thought there was any future in casual CW operation, I would have a K3
on order now. 

Dave
N7AF
K2 #4795

On Wed, 19 Mar 2008 13:50:03 -0400 Michael Brown [EMAIL PROTECTED]
writes:
 Although there isn't as much cw on during non-contest times as there 
 was 
 when I was licensed in '79, there are a number of ragchews going on 
 during 
 the day on 40m during the day and some dx at night/early morning 
 here in the 
 Midwest.
 
 I'd like for the people who think CW is dead to listen to the ARRL 
 160 
 contest, or any major contest for that matter. Even though the daily 
 
 activity may be down, I think we will continue to have decent cw 
 activity in 
 our lifetimes anyway.
 
 I think someone mentioned it earlier, and I don't want it to be 
 taken in the 
 wrong context, but if the bands are jam packed on 40m, 30 meters is 
 a great 
 band. I think it's better to go to 30m for cw qso's then it is to 
 get your 
 blood pressure up because 40 meters is jam packed with signals. Also 
 maybe 
 the contest managers can try to keep major cw and rtty contests on 
 different 
 dates, although I'm sure this is getting harder and harder
 
 73, Mike K9MI
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Re: [Elecraft] Re: K3 AM operation with FM roofing filter?

2007-05-24 Thread Dave Lowenstein
Does anyone know the answer to this?  Can the FM roofing filter be used
when transmitting AM to save the cost of an additional filter for a
rarely used mode?

On Tue, 22 May 2007 22:17:46 -0500 Scott Manthe [EMAIL PROTECTED] writes:
 I too would be interested in knowing this. I'm on a budget and it 
 would 
 be nice to save some $$ initially by buying only the FM filter and 
 using 
 the DSP to limit bandwidth in AM. Any possibility of this?
 
 Thanks,
 Scott, N9AA
 
 Dave Lowenstein wrote:
  No interest in ESSB and little interest in phone, but for casual 
 AM use,
  could the FM roofing filter be used or is it necessary to 
 purchase both
  AM  FM filters to be able to receive and transmit on all modes?
 
  73,
  Dave
  N7AF
 

 
 
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Re: [Elecraft] Re: K3 AM operation with FM roofing filter?

2007-05-22 Thread Dave Lowenstein
No interest in ESSB and little interest in phone, but for casual AM use,
could the FM roofing filter be used or is it necessary to purchase both
AM  FM filters to be able to receive and transmit on all modes?

73,
Dave
N7AF


On Tue, 22 May 2007 09:16:06 -0700 wayne burdick [EMAIL PROTECTED]
writes:
 Actually you could do ESSB at even wider bandwidths, say up to 4.5 or 
 
 even 5 kHz, but the exact specs are TBD.
 
 tnx
 Wayne
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Re: [Elecraft] Way OT - eBay - HELP

2006-05-31 Thread Dave Lowenstein

Geoff,

Everyone has pretty much covered the topic on the phony messages.  I've 
gotten them too.  However, your comment about contacting a real live person 
at eBay is a good one.  They are there but apparently days behind answering 
inquiries.  Since time is a major issue when dealing on eBay, you need 
timely help when there is a problem.  The problem is you can't get it when 
you need it.  That is poor customer service in my opinion and I no longer 
use eBay for that reason.  If Elecraft or the company I work for treated 
customers like eBay does, we'd be out of business!


73,
Dave
N7AF

- Original Message - 
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]

To: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Wednesday, May 31, 2006 2:10 AM
Subject: [Elecraft] Way OT - eBay - HELP


Sorry about this OT.  I keep getting nasty messages from ebay and ebay 
customers saying that I have not paid for this or that. I have NEVER used 
ebay nor have an account with them, and since none of my neighbours do 
either my question is 'How does one contact a HUMAN at ebay?'  All my 
messages to them seem to go into some Computer Black Hole.


Again, sorry for the bandwidth.

73,
Geoff
GM4ESD


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Re: [Elecraft] KAF2 or KDSP2 for K2 #5287

2006-04-06 Thread Dave Lowenstein
I find the crystal filter more than adequate for my type of CW operation and 
have felt no need to add any audio filtering.


73,
Dave
N7AF

- Original Message - 
From: Darwin, Keith [EMAIL PROTECTED]

To: Elecraft Group elecraft@mailman.qth.net
Sent: Thursday, April 06, 2006 9:14 AM
Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287


Great reply Vic,

Let's widen the question to make it KAF2 or KDSP2 or NOTHING?  Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you wouldn't want to be without it?

- Keith KD1E -

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Re: [Elecraft] Rework Eliminators

2006-03-22 Thread Dave Lowenstein
Had these been available when I built my K2, I would be more enthusiastic 
about adding options.  The one feature of the K2 I don't care for is the 
heat sink and mounting of the final transistors.  I don't relish the thought 
of taking the heat sink on and off and messing with those little washers and 
pads to add each option.  If I were to build another one with the thought of 
adding options, I would definitely consider the rework eliminators.


73,
Dave
N7AF

- Original Message - 
From: Charlie, W0YG [EMAIL PROTECTED]

To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Wednesday, March 22, 2006 8:30 AM
Subject: Re: [Elecraft] Rework Eliminators



Mike, AI4NS, wrote:


I ordered the complete kit for the partially assembled K2 I just bought.
Gary and Ken both emailed me with answers to my questions, and Gary called
me to make sure I ordered what I needed and thought I was getting. Great
service. Just email them with your questions, and they will let you know
what you need to order.


I just want to second what Mike said about the rework eliminators.  Gary 
and Ken are super quick to respond and their products are immensely 
helpful when troubleshooting an already built K2 or when making provisions 
in the build process for adding a future option.  I find I could not get 
along without a kit of these rework eliminators as they have sure saved 
time.


73,

Charlie, W0YG..
K2 SNs 4853 and 5366


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Re: [Elecraft] The Toroid Guy

2006-03-02 Thread Dave Lowenstein



winding toroids are not hard, just time consuming and boring.


I found winding the toroids a lot less boring and time-consuming than 
installing several hundred resistors and capacitors that I could hardly see.


Dave
N7AF 


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Re: [Elecraft] CW in Emergencies?

2005-09-06 Thread Dave Lowenstein
The disadvantage of no-code is that if new hams aren't required to learn 
CW, how are they going to be able handle emergency traffic from our 
low-powered battery-operated K1's and K2's?  Since emergencies are one of 
our reasons for being and CW gets through with simple equipment where other 
modes won't, aren't we shooting ourselves in the foot by eliminating the CW 
requirement?


Dave
N7AF 


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Re: [Elecraft] speaker problem

2005-07-29 Thread Dave Lowenstein
Mine has a sticker saying Made in China on it.  That pretty much tells you 
about the quality.  :(


Dave
N7AF


- Original Message - 
From: [EMAIL PROTECTED]

To: Elecraft@mailman.qth.net
Sent: Friday, July 29, 2005 1:18 PM
Subject: Re: [Elecraft] speaker problem



Hmmm. The headphone jack in K2 4152 is intermittent also. I'm  holding my
breath every time I unplug. Seems to be a problematic component, at  least 
some

of them are. Maybe there was a bad batch?

Elecraft, is there a more reliable  replacement?

Bill  K3UJ
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Re: [Elecraft] Elecraft Net Report for April 24-25, 2005

2005-04-25 Thread Dave Lowenstein
Hi Kevin,

My K2 is S/N 4795 and I'm located in Tempe, AZ.  Could just barely hear you
at times on 20 and same on 40 at beginning of the net.  I was able to copy
you pretty well by the end of the net.

73,
Dave
N7AF

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Re: [Elecraft] Low PLL reference oscillator range

2005-04-21 Thread Dave Lowenstein
Paul,

I had the same problem a few weeks ago.  You'll need to request a 12uH choke
from Elecraft for L31 and that will solve the problem.

73,
Dave
N7AF

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Re: [Elecraft] K2 volume

2005-04-14 Thread Dave Lowenstein
I'll answer this since the experts don't seem to be available at the moment.
1.  Yes, you should be able to receive signals on the 40-meter band.
2.  You should have full headphone volume now.
Good luck and I'm sure someone will be able to help you track down the
problem if there is one.

73,
Dave
N7AF

- Original Message - 
From: randt [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Thursday, April 14, 2005 12:41 PM
Subject: [Elecraft] K2 volume


kc4eyf Here!
To veteran k2'ers
Building #4877 k2
I have completed
Alignment and Test,Part 1
Alignment and Test,Part 2
I Have Two Questions
1-Should I be picking up 40 meter
band signals at this point CW/ 
2-Will my volume increase as I
Proceed with project
Might be a dumb question
but im curious at this point of k2
I will be adding ssb/nb/audiofilter
Thanks
kc4eyf

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Re: [Elecraft] ECN/30 - Success!? (I think)

2005-02-25 Thread Dave Lowenstein
What about the 0200 net, Daniel?  Or didn't it count since I was the only
check-in and was running a TT Argonaut?  hi.  I enjoyed working someone
using a K2 and hearing what it sounded like as I hope to build one soon.

73,
Dave
N7AF

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[Elecraft] Listening to SSB on K2 without KSB2

2005-02-22 Thread Dave Lowenstein
Is the K2 unsuitable for listening to SSB if the KSB2 isn't installed?

73,
Dave
N7AF

 The SSB filter is much more pleasant to use than the CW filter set for 
 a wide bandwidth. The SSB filter has a flat passband, whereas the CW 
 filter, being varactor controlled, develops a lot of ripple by the time 
 you widen it out. We experimented with variations on the filter 
 topology before releasing the K2 to production, but it was getting too 
 complex.

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Re: [Elecraft] Listening to SSB on K2 without KSB2

2005-02-22 Thread Dave Lowenstein
Thanks for the replies Don, David,  Philipe.  Sounds like it ought to work.
I'm a CW man on the verge of ordering a K2 but like to just listen to SSB
while I'm puttering around the shack.

73,
Dave
N7AF

- Original Message - 
From: W3FPR - Don Wilhelm [EMAIL PROTECTED]
To: Dave Lowenstein [EMAIL PROTECTED]; Elecraft@mailman.qth.net
Sent: Tuesday, February 22, 2005 10:12 AM
Subject: RE: [Elecraft] Listening to SSB on K2 without KSB2


 Dave,

 The variable filter is not completely unsuitable for SSB listening, it
just
 has a high passband ripple which can become tiring after a time to some
 people's ears.  I use the variable filter as a narrow SSB receive filter
to
 combat high pitched QRM (1.8, 1.7 or 1.6 kHz widths), but it does OK out
to
 about 2.2 or 2.3 kHz.  The passband is relatively flat up to about 1.2 kHz
 and above that the ripple becomes progressively greater as the width is
 increased.

 73,
 Don W3FPR

  -Original Message-
 
  Is the K2 unsuitable for listening to SSB if the KSB2 isn't installed?
 
  73,
  Dave
  N7AF
 
   The SSB filter is much more pleasant to use than the CW filter set for
   a wide bandwidth. The SSB filter has a flat passband, whereas the CW
   filter, being varactor controlled, develops a lot of ripple by the
time
   you widen it out. We experimented with variations on the filter
   topology before releasing the K2 to production, but it was getting too
   complex.
 
 



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