Re: [Elecraft] K2 advice needed - what to buy

2021-11-24 Thread David Woolley 
With such an out of balance antenna, the case, power supply and leads of 
the transmitter are all going to be parts of the real antenna.  I'm not 
sure, therefore, that  you can rely on an SWR measurement made using 
other equipment.


You should certainly make sure that paint is removed from inside the 
panels around where the 2-d fasteners go, to maximise the RF integrity 
of the outside of the case.  As you are not using a microphone, you 
probably don't need to bond signal ground to the case there, as well 
.


PS.  Starting a subject with Re, when it is not a reply, will be scored 
as possible spam by some spam filters.


--
David Woolley
Owner K2 06123

On 23/11/2021 11:57, E J Martin wrote:

I have a long wire resonant (SWR < 1.4) across the 40 band hence don't need an 
ATU.


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Re: [Elecraft] K2 advice needed - what to buy

2021-11-23 Thread Dave Van Wallaghen 

Hi Ted,

It sounds like all you would need is a simple configuration for your K2. 
A couple of things you may want to consider is the KNB2 noise blanker if 
you happen to have any impulse noise issues at your QTH. Also, the KAF2 
audio filter provides a set of nice audio filters that can be peaked at 
your sidetone frequency and help weak CW signals pop out of the noise.


You will have a set of 4, voltage controlled (adjustable) CW crystal 
filters. They can be set at any width you like and centered on your 
sidetone frequency. Typically they are set for widths of 1.5kHz, 700hz, 
400Hz and 200Hz. But you can choose whatever works for you. There is an 
older program out there called Spectrogram that makes setting up you 
filters a snap. You feed the K2 audio into your PC's soundcard and 
display the audio spectrum using Spectrogram to visually adjust the 
width and center frequency of your 4 filters.


A panadapter solution is not inherit in the K2. But, with the addition 
of a IF Buffer amplifier, the K2's IF can be brought outside the K2 for 
use with various solutions. I came up with a nice panadapter solution 
that uses an IF amp designed by Jack Smith, K8ZOA (SK) and sold by DX 
Engineering. I feed the IF output to a SDR Play unit and use HDSDR on a 
PC to display spectrum and provide point and click QSY via Omni-Rig. 
Here is a complete write up of the project on my site: 
https://www.w8fgu.com/k2pan.html


If you decide to implement a panadapter solution or need rig control 
from a PC, you will also need the KIO2 Aux I/O board in your K2 to 
provide RS-232 communication. Another consideration may be the K160RX 
module. Although it doesn't sound like you would need 160m capability, 
the module also provides a separate receive antenna port that can be 
used on any band if you have the need to use a separate RX antenna. 
Based on your operating preferences, it doesn't sound like the KSB2, 
KAT2 or KBT2 (internal battery) would be useful to you.


Hope this helps.

73,
Dave, W8FGU


On 11/23/2021 6:57:45 AM, "E J Martin"  wrote:


Good morning.  I'd like to buy & make a K2 kit but would appreciate advice on what 
features to buy.  I'm a simple chap based in the UK. And after 50 years I now Only use CW 
on 40m with a straight key,   and I don't bother with contests as the morse is all 
autokeyers, keyboards, decoders, & 30wpm PFKeys.  No criticism intended it's the 
inevitable evolution of CW with technology.  I have a long wire resonant (SWR < 1.4) 
across the 40 band hence don't need an ATU. I've consigned my ICOM kit to a box in the 
attic and now use an early generation K2, battery powered, at 10W.  But I'd rather like to 
build a new K2. I'd need roofing filters etc for CW but Not SSB or anything else.   What 
would also be nice would be a panadapter but not sure how that would connect. Any 
advice/guidance would be much appreciated. ––– Ted M5UF
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Re: [Elecraft] K2 advice needed - what to buy

2021-11-23 Thread E J Martin 
Good morning.  I'd like to buy & make a K2 kit but would appreciate advice on 
what features to buy.  I'm a simple chap based in the UK. And after 50 years I 
now Only use CW on 40m with a straight key,   and I don't bother with contests 
as the morse is all autokeyers, keyboards, decoders, & 30wpm PFKeys.  No 
criticism intended it's the inevitable evolution of CW with technology.  I have 
a long wire resonant (SWR < 1.4) across the 40 band hence don't need an ATU. 
I've consigned my ICOM kit to a box in the attic and now use an early 
generation K2, battery powered, at 10W.  But I'd rather like to build a new K2. 
I'd need roofing filters etc for CW but Not SSB or anything else.   What would 
also be nice would be a panadapter but not sure how that would connect. Any 
advice/guidance would be much appreciated. ––– Ted M5UF
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[Elecraft] K2 advice

2020-11-22 Thread John Daws 
Huge thanks to the many who have offered advice on the subject of my K2
intentions- all very useful and am just printing out the hard copies of all
the e-mails so I can reread and   think about it  (always did prefer hard
copy!!)

 

I really appreciate all the responses so many thanks; you have given me much
to think about .

 

Best wishes  and give me a call if you hear me .. the KX3 works well!

 

John

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Re: [Elecraft] K2: Advice about Rework Eliminators etc...

2010-08-15 Thread Robert G. Strickland 
John...

As per another post, I don't know if they're still available, either. 
That said, I used them and found them to be a non issue and most 
helpful in the long run. I am forever tinkering around inside my K2, and 
having the ReWorkEliminators in there makes a huge difference. Hope you 
can find them, still.

...robert


On 8/14/2010 05:07, VK7JB wrote:

 Hello Group,

 Having gained some confidence completing a K1 a few months ago, I've just
 ordered from Elecraft a K2 with these options:  KPA100, KSB2 and KDSP2.   I
 can't see that I'll ever want to install the KNB2 or the 160 or 60m options.

 Does the Rework Eliminator approach to the build simply complicate matters
 if I'm installing these options from the beginning and won't ever need the
 others?  Are there any other advantages to using the Options bypass headers
 etc?  Is it worth the potential extra-confusion of following essentially 2
 manuals during the build?  I find the unpcbs website a bit overwhelming and
 confusing, whereas I find the Elecraft Construction manuals very clear. It
 would be nice to be able to remove the options for isolating problems with
 them, but is that reason enough for all the extra fuss using the Rework
 Eliminators?

 I do like the idea of the Internal Mike Adapter from that company and will
 probably order that.

 Any ideas or advice would be very welcome,

 john
 VK7JB

-- 
Robert G. Strickland, PhD, ABPH - KE2WY
rc...@verizon.net
Syracuse, New York, USA
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[Elecraft] K2: Advice about Rework Eliminators etc...

2010-08-13 Thread VK7JB 

Hello Group,

Having gained some confidence completing a K1 a few months ago, I've just
ordered from Elecraft a K2 with these options:  KPA100, KSB2 and KDSP2.   I
can't see that I'll ever want to install the KNB2 or the 160 or 60m options.  

Does the Rework Eliminator approach to the build simply complicate matters
if I'm installing these options from the beginning and won't ever need the
others?  Are there any other advantages to using the Options bypass headers
etc?  Is it worth the potential extra-confusion of following essentially 2
manuals during the build?  I find the unpcbs website a bit overwhelming and
confusing, whereas I find the Elecraft Construction manuals very clear. It
would be nice to be able to remove the options for isolating problems with
them, but is that reason enough for all the extra fuss using the Rework
Eliminators?

I do like the idea of the Internal Mike Adapter from that company and will
probably order that.

Any ideas or advice would be very welcome,

john
VK7JB
-- 
View this message in context: 
http://elecraft.365791.n2.nabble.com/K2-Advice-about-Rework-Eliminators-etc-tp5422442p5422442.html
Sent from the [K2] mailing list archive at Nabble.com.
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Re: [Elecraft] K2: Advice about Rework Eliminators etc...

2010-08-13 Thread Brett Howard 
I don't think these are available anymore except for the mic
adapter  Bet that helps you make your decision...

;)

On Fri, Aug 13, 2010 at 10:07 PM, VK7JB zen...@netspace.net.au wrote:

 Hello Group,

 Having gained some confidence completing a K1 a few months ago, I've just
 ordered from Elecraft a K2 with these options:  KPA100, KSB2 and KDSP2.   I
 can't see that I'll ever want to install the KNB2 or the 160 or 60m options.

 Does the Rework Eliminator approach to the build simply complicate matters
 if I'm installing these options from the beginning and won't ever need the
 others?  Are there any other advantages to using the Options bypass headers
 etc?  Is it worth the potential extra-confusion of following essentially 2
 manuals during the build?  I find the unpcbs website a bit overwhelming and
 confusing, whereas I find the Elecraft Construction manuals very clear. It
 would be nice to be able to remove the options for isolating problems with
 them, but is that reason enough for all the extra fuss using the Rework
 Eliminators?

 I do like the idea of the Internal Mike Adapter from that company and will
 probably order that.

 Any ideas or advice would be very welcome,

 john
 VK7JB
 --
 View this message in context: 
 http://elecraft.365791.n2.nabble.com/K2-Advice-about-Rework-Eliminators-etc-tp5422442p5422442.html
 Sent from the [K2] mailing list archive at Nabble.com.
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