[Elecraft] Elecraft CW Net Report

[kevin]

Good Evening,

   I know I lost at least one of you on 20 meters; the band just went 
away on me.  Forty meters was also challenging. Thunderstorms caused 
loud QRN crashes.  QSB was lower than it had been on 20 meters.  There 
it varied from moderate and slow to light and fast.  I think the 
lightning crashes of static were the most difficult to ignore.  Walking 
outside afterward was soothing.



  On 14050.5 kHz at 2200z:

W0CZ - Ken - ND

K0DTJ - Brian - CA

K6XK - Roy - IA


  On 7047.5 kHz at z:

K7TXA - Jim - ID

K0DTJ - Brian - CA

WM5F - Dwight - ID

N7TB - Terry - OR

K6PJV - Dale - CA


   Until next week 73,

 Kevin.  KD5ONS





-






https://www.quantamagazine.org/memories-help-brains-recognize-new-events-worth-remembering-20230517/



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[Elecraft] FS, two Elecraft rigs, Ks and KX2

[Douglas Hudson]

Medical issues suggest it would be wise for me to reduce my inventory of ham 
related items I have collected over the past 63 years.  I have the following 
for sale:

K2/10, SN 6280 with the following accessories and options,

KNB2, K6OXV, KAF2, KBT2, KDSP2, KSB2, and KAT2.  The KBT2 battery is not 
included as it no longer holds a charge and is heavy to the point it may cause 
physical damage in shipping.  The battery can be found on the internet.
This unit was recently submitted to Dave Wallaghen with a request to check the 
statis and function of all options and accessories, do a complete alignment, 
and overall function test.  Dave did a wonderful job, and the unit is 100% 
operational.
Included is literature and spare/old parts for the options, plus the assembly, 
alignment, and owner's manuals.  Photos are available along with Dave 
Wallaghan's report.  Asking $950 plus shipping from the Seattle area.


KX2-F, SN 1888, Shack-In A- Box the following options,
KXAT2, KXIO2, KXBC2, KXBT2, KX2GNDPLUG, MH3, CS40 (Small Lowepro case), KXPD2, 
KXUSB, KXIO2, and Gem Products extended side plates with Lexan cover.
This unit is 100% operational.

I also have the following which I would like to sell with the KX2 as a complete 
package,

A brand new, never used Elecraft AX1 antenna with associated bipod, 90 degree 
BNC connector, and counterpoise.
A new, never used Buddipole-Mini antenna package.
An older Heil Pro-Set headset which has never been used.

All of these products come from a childless, no smoking home, and are in new 
condition.  The Elecraft rigs have no marks, or blemishes, and are 100% 
operational.  The two antennas are also new and 100%.
I would like to sell the KX2 as a complete set with the two antennas and 
headset.  Asking $1,600 for the package.

Photos of all of these items are available upon request.  These items are also 
listed for sale on another venue.

Please inquire via direct e-mail.

K7CUU//Doug
d_hud...@outlook.com



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[Elecraft] FS, two Elecraft rigs, Ks and KX2

[Douglas Hudson]

Medical issues suggest it would be wise for me to reduce my inventory of ham 
related items I have collected over the past 63 years.  I have the following 
for sale:

K2/10, SN 6280 with the following accessories and options,

KNB2, K6OXV, KAF2, KBT2, KDSP2, KSB2, and KAT2.  The KBT2 battery is not 
included as it no longer holds a charge and is heavy to the point it may cause 
physical damage in shipping.  The battery can be found on the internet.
This unit was recently submitted to Dave Wallaghen with a request to check the 
statis and function of all options and accessories, do a complete alignment, 
and overall function test.  Dave did a wonderful job, and the unit is 100% 
operational.
Included is literature and spare/old parts for the options, plus the assembly, 
alignment, and owner's manuals.  Photos are available along with Dave 
Wallaghan's report.  Asking $950 plus shipping from the Seattle area.


KX2-F, SN 1888, Shack-In A- Box the following options,
KXAT2, KXIO2, KXBC2, KXBT2, KX2GNDPLUG, MH3, CS40 (Small Lowepro case), KXPD2, 
KXUSB, KXIO2, and Gem Products extended side plates with Lexan cover.
This unit is 100% operational.

I also have the following which I would like to sell with the KX2 as a complete 
package,

A brand new, never used Elecraft AX1 antenna with associated bipod, 90 degree 
BNC connector, and counterpoise.
A new, never used Buddipole-Mini antenna package.
An older Heil Pro-Set headset which has never been used.

All of these products come from a childless, no smoking home, and are in new 
condition.  The Elecraft rigs have no marks, or blemishes, and are 100% 
operational.  The two antennas are also new and 100%.
I would like to sell the KX2 as a complete set with the two antennas and 
headset.  Asking $1,600 for the package.

Photos of all of these items are available upon request.  These items are also 
listed for sale on another venue.

Please inquire via direct e-mail.

K7CUU//Doug
d_hud...@outlook.com



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Re: [Elecraft] question K3 digital duty cycle power FT8

[AB2E Darrell]

Thanks Rick, info appreciated.

73 Darrell AB2E


From: elecraft-boun...@mailman.qth.net  on 
behalf of Rick Bates, NK7I 
Sent: Sunday, May 21, 2023 4:34 PM
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] question K3 digital duty cycle power FT8

13 seconds of transmit, 17 seconds of receive = 43% duty cycle.

I use (rarely) less than 100 watts, all the way up to band legal limit.
With a K3, don't worry about it.  IF the cooling become inadequate due
to local environment, it'll reduce output to protect itself.

73,
Rick nk7i


On 5/21/2023 12:43 PM, AB2E Darrell wrote:
> Hi all,
> I'm leaving for VP9 on Wed, and taking my trusty K3.
> A little time will be devoted to FT8 so my question is what is the duty cycle 
> for running FT8 on K3?
> I've read a couple old posts about PSK, so I'm wondering what the group is 
> doing.
> How much power out are you running the K3 on FT8 without overheating etc?
>
> 73
> Darrell AB2E (portable VP9 from 24-29May)
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Re: [Elecraft] question K3 digital duty cycle power FT8

[Rick Bates, NK7I]

13 seconds of transmit, 17 seconds of receive = 43% duty cycle.

I use (rarely) less than 100 watts, all the way up to band legal limit.  
With a K3, don't worry about it.  IF the cooling become inadequate due 
to local environment, it'll reduce output to protect itself.


73,
Rick nk7i


On 5/21/2023 12:43 PM, AB2E Darrell wrote:

Hi all,
I'm leaving for VP9 on Wed, and taking my trusty K3.
A little time will be devoted to FT8 so my question is what is the duty cycle 
for running FT8 on K3?
I've read a couple old posts about PSK, so I'm wondering what the group is 
doing.
How much power out are you running the K3 on FT8 without overheating etc?

73
Darrell AB2E (portable VP9 from 24-29May)
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[Elecraft] 40 meter SSB net, 7280, 1900Z

[Steve Hall]

Thanks to all checking in.  Few signals on 40 today.  Mostly short skip.
20 meters was not much better.

WM6P STEVE GA K4D NET CONTROL
K8NU CARL OH K4D
K4DFH DAVE TN G90
W9EJB ED IN K4D
KC8WH MIKE OH K3S
KI4OCC JIM NC IC725
W4DML DOUG TN K3
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[Elecraft] question K3 digital duty cycle power FT8

[AB2E Darrell]

Hi all,
I'm leaving for VP9 on Wed, and taking my trusty K3.
A little time will be devoted to FT8 so my question is what is the duty cycle 
for running FT8 on K3?
I've read a couple old posts about PSK, so I'm wondering what the group is 
doing.
How much power out are you running the K3 on FT8 without overheating etc?

73
Darrell AB2E (portable VP9 from 24-29May)
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Re: [Elecraft] K3 Rotary encoder

[evert]

Hello Kimo and others,

 

Thank you all for your the answers.

I think Ramon (wd4x) came up with the right ones.

 

I checked the size and they are the same.

Found them at Mouser for € 1,71 (abt $ 1,70) each, ordered them and they will 
be delivered Tuesday. So that’s fast.

I will replace them all as they are in a nasty place (most probably have to 
remove the LED board but will have to look into it carefully).

 

73, Evert PA2KW

 

From: Kimo Chun  
Sent: Sunday, 21 May 2023 18:48
To: David Pratt ; ev...@pa2kw.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 Rotary encoder

 

I am no expert on this radio. However, I notice that the part Evert is 
referring to is not the same or type of encoder/part that David mentioned. I am 
only going by the visual representation in the manual.

The E850239 is one of two identical rotary encoders used for VFO A and B. I 
purchased a spare of that particular part. There is no part number listed in 
the Assembly Manual for the HI / WIDTH control first mentioned. It appears that 
part is one of several that are preinstalled on the E850242 Front Panel PCB 
Assembly and is not normally available or installed as a separate kit part.

 

However, contacting the factory is advised if not already done.

 

1. They would be able to say whether it is advisable for that part to be 
replaced in the field (granted, many people have the expertise and equipment to 
do so).

 

2. They have been open to me and others with offering any parts (for sale) that 
can be and/or in lieu of that, giving the OEM part they sourced themselves. 
Those, in my case, were from Digi-key for which they provided their part number 
purchased. Though not likely applicable in this case, one thing you might have 
to investigate is whether the part Elecraft sourced is correct for small 
quantity purchase and packaging format (not on a reel of SMD intended for 
automated feeding and insertion). I"m injecting this though I don't know if 
Elecraft does this. I think their contracted board assembly builders may.

 

The point is...ask the source. If you want me to phone them on your behalf I'd 
be glad to do so (so no international phone call).

 

Good luck.

73, Kimo Chun KH7U

 

 

 

On Sun, May 21, 2023 at 12:07 AM David Pratt mailto:da...@g4dmp.co.uk> > wrote:

Several years ago I had a problem with one of my K3 encoders and 
obtained a replacement E850239 from Elecraft under warranty. However, I 
noticed that the two halves of the encoder had started to separate. They 
were held together by small aluminium rivets. By carefully removing the 
rivets, one by one, and replacing them with small screws of a suitable 
size the encoder could be repaired.  If your problem is with the encoder 
halves separating, Evert, that might be worth a try.

73 de David G4DMP

On 21/05/2023 10:46, ev...@pa2kw.com   wrote:
> I think I have a defect rotary encoder on a K3.
> It is the one used for setting the bandwidth (Hi/Width).
> Anyone out here who knows the manufacturer / type number of this rotary 
> encoder?
> 
> 73. Evert PA2KW

-- 
+ - - - - - - - - - - - - - - - - - +
| David M Pratt, Kippax, Leeds, UK  |
| Website: https://www.g4dmp.co.uk  |
+ - - - - - - - - - - - - - - - - - +

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Re: [Elecraft] K3 Rotary encoder

[Geert Jan de Groot]

On 21/05/2023 18:23, elecraft-requ...@mailman.qth.net wrote:

I think I have a defect rotary encoder on a K3.
It is the one used for setting the bandwidth (Hi/Width).
Anyone out here who knows the manufacturer / type number of this rotary encoder?


Google finds https://n5na.net/wp/replacing-elecraft-k3-push-button-encoders/
Also 
https://groups.io/g/Elecraft-K3/topic/k3_rotary_encoder_replacement/74198899


You probably want to order enough to replace all four encoders at once.

NOTE, the VFO-A and VFO-B encoder, as well as the RIT encoder, are 
*different types*.


If you qualify for minimum order size, then ordering directly at mouser 
or digikey is simplest, at least for us behind the EU customs wall.


Be sure to include diodes to protect your KLPA when you put in an order.

Geert Jan


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Re: [Elecraft] K3 Rotary encoder

[Kimo Chun]

I am no expert on this radio. However, I notice that the part Evert is
referring to is not the same or type of encoder/part that David mentioned.
I am only going by the visual representation in the manual.
The E850239 is one of two identical rotary encoders used for VFO A and B. I
purchased a spare of that particular part. There is no part number listed
in the Assembly Manual for the HI / WIDTH control first mentioned. It
appears that part is one of several that are preinstalled on the E850242
Front Panel PCB Assembly and is not normally available or installed as a
separate kit part.

However, contacting the factory is advised if not already done.

1. They would be able to say whether it is advisable for that part to be
replaced in the field (granted, many people have the expertise and
equipment to do so).

2. They have been open to me and others with offering any parts (for sale)
that can be and/or in lieu of that, giving the OEM part they sourced
themselves. Those, in my case, were from Digi-key for which they provided
their part number purchased. Though not likely applicable in this case, one
thing you might have to investigate is whether the part Elecraft sourced is
correct for small quantity purchase and packaging format (not on a reel of
SMD intended for automated feeding and insertion). I"m injecting this
though I don't know if Elecraft does this. I think their contracted board
assembly builders may.

The point is...ask the source. If you want me to phone them on your behalf
I'd be glad to do so (so no international phone call).

Good luck.
73, Kimo Chun KH7U



On Sun, May 21, 2023 at 12:07 AM David Pratt  wrote:

> Several years ago I had a problem with one of my K3 encoders and
> obtained a replacement E850239 from Elecraft under warranty. However, I
> noticed that the two halves of the encoder had started to separate. They
> were held together by small aluminium rivets. By carefully removing the
> rivets, one by one, and replacing them with small screws of a suitable
> size the encoder could be repaired.  If your problem is with the encoder
> halves separating, Evert, that might be worth a try.
>
> 73 de David G4DMP
>
> On 21/05/2023 10:46, ev...@pa2kw.com wrote:
> > I think I have a defect rotary encoder on a K3.
> > It is the one used for setting the bandwidth (Hi/Width).
> > Anyone out here who knows the manufacturer / type number of this rotary
> encoder?
> >
> > 73. Evert PA2KW
>
> --
> + - - - - - - - - - - - - - - - - - +
> | David M Pratt, Kippax, Leeds, UK  |
> | Website: https://www.g4dmp.co.uk  |
> + - - - - - - - - - - - - - - - - - +
>
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Re: [Elecraft] CM 500 Ear Covers - Update

[Joe Subich, W4TV]

A follow-up ...

Since I had two pairs of CM-500 that needed refurbishment
(my original pair - without any cushions - and my current
pair - that is starting to flake), I took a chance and
ordered cushions for the Koss QZPRO.

They arrived a couple weeks ago and appear to be a perfect
fit for the CM-500.  I would guess they are the same as the
suggested UR-20 cushions (which are "Sold Out").

As the foam was also gone (original pair) or falling apart
(current pair), I started looking for a suitable replacement
as I did not want to do a cut up sock and double stick tape
as suggested in one You Tube video.  I found these:
   
These are 90 mm round and I was able to simply tuck them
between the QZPRO cushions and the face of the CM-500
"speakers" after installing the new cushions.  There was
no need to cut them down to fit the recesses of the CM-500
and hold them in place using double stick tape.  The foam
is a bit thicker and softer than the original Yamaha (Koss).

Finally, and probably not necessary, I added cloth covers ...
   
Although I took a chance and got a spare set of the cushions and
foam disks for each of my CM-500s, I decided the extra protection
from sweat, etc. was probably worthwhile for the long term.  I
went with black but a station with multiple operators could use
a different color for each operator.

All in all, replacing the cushions and adding new foam is quite
easy - no broken speaker wires if one is careful.  Getting to
the three screws (Phillips #0) is easy once one learns where
they are (front and +/- 120 degrees).  For $18 total per headset
for cushions ($5), foam disks ($9) and covers ($8 for 2 pair)
the cost is far less than an equivalent replacement headset
(the CM-500 is currently $60 on Amazon).

73,

   ... Joe, W4TV


On 5/8/2023 6:14 PM, Joe Subich, W4TV wrote:


On 5/2/2023 12:03 PM, Walter Underwood wrote:

The Koss UR-20 is the same headphone as the Yamaha CM-500 and Koss 
SB-40, but without a boom mic. The link to these replacements was 
posted in this email reflector (11/1/19) by Josh W6XU. These are the 
ones I ordered. 


Unfortunately, the SB-40 ear cushions are "Sold Out" at Koss.  The 
QZPRRO headset ear cups appeared to be the same size/shape so I

ordered a couple pairs (both of my CM-500s need new cushions) and
they fit just fine: 
The foam in both of my headsets has also deteriorated but the QZPRO
cushions do not come with replacement foam.  My next step is to find
a source for that foam.

For the benefit of others, the earphone cups of the CM-500 are
98.4 mm (3 7/8") x 93.6 (3 11/16") - a standard 100 or 105 mm
(round) headphone pad should work.  However, since the screws
holding the headphones together are located under the cushions and
the cushions are clamped between the face and cup of the headphones,
cushions with built in foam screens will not work.

The foam screens are 80 mm (3 1/8") x 60 mm (2 3/8") and are
fixed to the face of the headphone with double stick tape.  One
could probably use 98 x 93 mm foam and simply slide it between
the earpad and the face of the headphone after the earpad has
been replaced.

73,

    ... Joe, W4TV



On 5/2/2023 12:03 PM, Walter Underwood wrote:
Replacement ear pads are available, but the internal wiring is very 
fragile.


I managed to get the replacements on, but broke a wire. After four 
breaks and three re-solderings, there wasn’t enough wire left to work 
with, so I bought a new headset.


The Koss UR-20 is the same headphone as the Yamaha CM-500 and Koss 
SB-40, but without a boom mic. The link to these replacements was 
posted in this email reflector (11/1/19) by Josh W6XU. These are the 
ones I ordered.


https://www.koss.com/accessories/cushions/ur20-ear-cushion

This video walks you through the replacement steps.

https://www.youtube.com/watch?v=Gz-atFziEz4

This guy just glued on the new ones, which might be a safer approach.

http://n4cf.mdodd.com/cm500_pads.html

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)


On May 2, 2023, at 7:24 AM, Paul Ecker  wrote:

Realize this subject has been around before, most of postings in 
archives

are dated. Does anyone have a good current source for replacement ear
covers for the Yamaha CM 500 Headset?

73 Paul w2eck



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Re: [Elecraft] K3 Rotary encoder

[David Pratt]

Several years ago I had a problem with one of my K3 encoders and 
obtained a replacement E850239 from Elecraft under warranty. However, I 
noticed that the two halves of the encoder had started to separate. They 
were held together by small aluminium rivets. By carefully removing the 
rivets, one by one, and replacing them with small screws of a suitable 
size the encoder could be repaired.  If your problem is with the encoder 
halves separating, Evert, that might be worth a try.


73 de David G4DMP

On 21/05/2023 10:46, ev...@pa2kw.com wrote:

I think I have a defect rotary encoder on a K3.
It is the one used for setting the bandwidth (Hi/Width).
Anyone out here who knows the manufacturer / type number of this rotary encoder?

73. Evert PA2KW


--
+ - - - - - - - - - - - - - - - - - +
| David M Pratt, Kippax, Leeds, UK  |
| Website: https://www.g4dmp.co.uk  |
+ - - - - - - - - - - - - - - - - - +

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[Elecraft] K3 Rotary encoder

[evert]

I think I have a defect rotary encoder on a K3.
It is the one used for setting the bandwidth (Hi/Width).
Anyone out here who knows the manufacturer / type number of this rotary encoder?

73. Evert PA2KW


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[Elecraft] K3 Remote software

[Josep via Elecraft]

Hi Guys, 
just compiling information on remote operation and wanted to know what is the 
software you use to manage a K3 remote station.I am in the process to put (by 
the end of year) a remote station in my 2nd QTH and want to have things 
clear.Equipment will be a K3/100 atthe remote site and K3/0 at home. RRC-1258 
MkII (still need to find the Control unit) to manage the remote.
Thanks in advance.


73, 
JosepEA6BFMyWebsiteBUG #256  -  CWOps #3072  -  FOC #2182 (ex 1724)
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