Re: [Elecraft] K2/100 down power on 20M

[Michael Carter via Elecraft]

Hi Jerry,

I agree that the relatively low TX power output on 20M
originates in the KPA100 module.  Did you build that
module and install it yourself?  The LPA circuit in the
base K2 seems to operating normally, and your
peaking of the BPF confirms that.

If you have capability to sweep the 20M/30M LPF
section on the KPA100 for insertion loss, that would
provide more insight.  However, those LPF sections
are also inline when the KPA100 is nominally
bypassed - it's only the amplifier circuit that is
bypassed.  If there was a significant problem in the
LPF on the KPA100, it would have been evident in
your tests on the 10 watt TX power setting.

I would check the ALC indication on each band, but
set the Power control for 100 watts rather than full
clockwise rotation.  You could also monitor the
ALC voltage on the Control board as you change
bands to see if for some reason the ALC control
is reducing TX power on 20 meters.  There is no
band-dependent circuitry in the ALC system,
but the SWR forward/reverse power detection
circuit on the KPA100 does have a trimmer cap
to balance the bridge.  It would be unlikely for
a resonance condition in the bridge to cause
an elevated VRFDET voltage on one band alone,
but I am curious if the ALC system is doing something
odd on 20 meters only.

73,
Mike, K8CN
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Re: [Elecraft] K2/100 down power on 20M

[jerry]

OK,

   With a dummy load - actually a 500W Bird 30dB attenuator - the 
displayed power out came up to 78W.
I tried adjusting the bandpass filter - it was already spot on.  They 
use one filter for 40M and 30M,
and you go back & forth between the two.  It was already perfectly 
peaked & tweaked.


   What about the KPA100?  I turned the power down to 10W, taking it out 
of the circuit.

20M - 9.6W
30M - 10.23W

  With power set to 40W:
20M - 41.7W
30M - 42.5W

  With power set to 60W:
20M - 56.8W
30M - 62.5W

  With power set to 80W:
20M - 71W
30M - 77.6W

  With power set to 100W:
20M - 78.6W
30M - 91.7W

 With power set to 110W:
20M - 78.6W
30M - 98.5W

  I suspect that the problem is in the KPA-100.  Maybe a wrong value in 
the LPF?
Power out with control set fully clockwise, into the dummy load, 
measured by the Telepost:

80M - 120W
40M - 104W
30M - 97.7W
20M - 79.4W
17M - 98.3W
15M - 88W
10M - 74.5W

  Interesting, according to the KPA100 manual, 20M and 17M share an LPF. 
 If it was out of whack, I'd expect 17M to be MORE

effected than 20.

   - Jerry, KF6VB






On 2024-03-16 09:10, Joe Subich, W4TV wrote:

But before that, I should redo the test with a dummy load.

Yes.

And it's not just gain decreasing with rising frequency, because it 
does 92W on 15M, 76W on 10M.

First suspicion ... check the alignment of your bandpass filters.

73,

   ... Joe, W4TV


On 3/16/2024 11:56 AM, jerry wrote:

Hello,

    I've been doing a bit of operation with my K2 lately.  It really 
is a joy on CW, and it fits perfectly under my big computer
monitors.  But I have noticed   On 40M, it does 101W out.  But on 
20, only 63W.  This is measured with a Telepost LP-100A vector

wattmeter.  The SWR is 1.4 to 1.

   And it's not just gain decreasing with rising frequency, because it 
does 92W on 15M, 76W on 10M.


   Guess it's time to get out the schematics...  But before that, I 
should redo the test with a dummy load.


  - Jerry, KF6VB










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Re: [Elecraft] K2/100 down power on 20M

[Joe Subich, W4TV]

But before that, I should redo the test with a dummy load.

Yes.

And it's not just gain decreasing with rising frequency, because it 
does 92W on 15M, 76W on 10M.

First suspicion ... check the alignment of your bandpass filters.

73,

   ... Joe, W4TV


On 3/16/2024 11:56 AM, jerry wrote:

Hello,

    I've been doing a bit of operation with my K2 lately.  It really is 
a joy on CW, and it fits perfectly under my big computer
monitors.  But I have noticed   On 40M, it does 101W out.  But on 
20, only 63W.  This is measured with a Telepost LP-100A vector

wattmeter.  The SWR is 1.4 to 1.

   And it's not just gain decreasing with rising frequency, because it 
does 92W on 15M, 76W on 10M.


   Guess it's time to get out the schematics...  But before that, I 
should redo the test with a dummy load.


  - Jerry, KF6VB










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[Elecraft] K2/100 down power on 20M

[jerry]

Hello,

   I've been doing a bit of operation with my K2 lately.  It really is a 
joy on CW, and it fits perfectly under my big computer
monitors.  But I have noticed   On 40M, it does 101W out.  But on 
20, only 63W.  This is measured with a Telepost LP-100A vector

wattmeter.  The SWR is 1.4 to 1.

  And it's not just gain decreasing with rising frequency, because it 
does 92W on 15M, 76W on 10M.


  Guess it's time to get out the schematics...  But before that, I 
should redo the test with a dummy load.


 - Jerry, KF6VB










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Re: [Elecraft] K2/100 refurbishment

[Geert Jan de Groot via Elecraft]

May I add another pitfall:

The original K2 radio has a round 2.1mm plug to power the radio.
The KPA100 adds a powerpole 12V input. Powering the radio through the 
powerpoles will feed the radio *and* the amplifier.


However the reverse is not true; powering the round plug will feed the 
radio but not feed the KPA100. However the KPA100 PIC communicting will 
receive power.


Hence, perhaps emberassing: "did you power the K2 via the powerpoles"?

Geert Jan
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[Elecraft] K2/100 refurbishment

[Don Palmer via Elecraft]

Hi Steve

 

How many screws do you need as I carry a stock of screws for
the K2 & K3.

 

 

Don G6CMV

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Re: [Elecraft] K2/100 refurbishment

[Victor Rosenthal]

1. Look at the pin diodes.

2. Elecraft isn't in the UK, but they sell stainless steel screws of the 
right size.


73, Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco

On 12/03/2024 22:06, Steve Bunting via Elecraft wrote:

Hi.

I’ve picked up a K2/100 from an sk sale. It has two issues:

1. The 100w PA doesnt work. I get power from the low power stage but above 15w 
power output drops to zero as the 100w stage clicks in. Before I go through all 
the devices systematically, is there a common fault that I can check?

2. The screws are a quite rusty and I would like to replace. Does anyone know a 
UK source of the American size screws that I can buy?

Cheers
Steve
M0BPQ


Sent from my iPhone
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Re: [Elecraft] K2/100 refurbishment

[Victor Rosenthal]

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Re: [Elecraft] K2/100 refurbishment

[Victor Rosenthal 4X6GP]

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Re: [Elecraft] K2/100 refurbishment

[Michael Carter via Elecraft]

Hi Steve,

No answer for your question #2 - Elecraft sells
packs of 25 screws for modest price, but shipping
to U.K. and VAT (if applicable) may dictate
otherwise.  Maybe pose that question to John,
G3PQA - he's done a lot of work on Elecraft
radios for fellow hams in the U.K.

Before doing any tests on the PA module
itself, go into the K2 secondary menu
(tap Menu, then tap Display) and find
the PA entry - it should be 'on' - you can
also check the PA fan control for proper
functioning.

If the 100 watt PA is enabled and the
problem persists,  then the
detective work ensues.

On question #1: carefully remove the KPA100
100 watt PA module from the base K2/10.
There is an internal RF feed from the base K2
to the KPA100, a speaker cable, a 12 V DC power
cable, and a ribbon cable to the Control panel.
The small plugs are 2-pin plastic with non-locking tabs, and
are easy to remove.  Be careful to label the two
identical plugs for RF and 12 VDC feed - you
don't want to swap these upon reassembly.
You can lay the KPA100 alongside the K2 and keep it connected
for powered troubleshooting - use a couple
of books to raise the KPA100 up to the level
of the K2 side panel.

I would first check (with power supply off and
disconnected) the resistance between
the PowerPole terminals on the KPA100.
If it's low, then you could have a shorted
PA transistor (Q1 or Q2).  There are additional
resistance checks described in a table
on p. 45 of the KPA100 manual - see the
Support menu on the Elecraft web page
for access to manuals - the KPA100 manual
appears under the Classic Line link for
K2-related manuals.  Those checks require
removal of the KPA100 module, hence my
recommendation to pull it.  You could do
the PowerPole resistance check before
removing the PA module, of course.

If there's no PA transistor short, then
there may be a problem in the diode
T/R switch.  This would take a bit more
effort to test, so I would hold off until
you've done the other resistance checks.
Some radios have been damaged by
lightning-induced overvoltages
on the cables, and the T/R switch
diodes have been mentioned in older
posts.

Given what you observed about
case screws being corroded, I would
unplug and plug those internal cables
and inspect for corrosion when plugs
are separated from their mates.

73,
Mike, K8CN



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[Elecraft] K2/100 refurbishment

[Steve Bunting via Elecraft]

Hi.

I’ve picked up a K2/100 from an sk sale. It has two issues:

1. The 100w PA doesnt work. I get power from the low power stage but above 15w 
power output drops to zero as the 100w stage clicks in. Before I go through all 
the devices systematically, is there a common fault that I can check?

2. The screws are a quite rusty and I would like to replace. Does anyone know a 
UK source of the American size screws that I can buy?

Cheers
Steve
M0BPQ


Sent from my iPhone
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[Elecraft] K2-100 For Sale

[H. Cary]

K2-100 #7450 - base unit aligned by Elecraft & KPA-100 built & aligned by Don 
Wilhelm, W3FPR. Includes KSB2 SSB option and KDSP2 Advanced DSP Filter & 
Real-Time Clock plus Heil headphone mic combo. Reason? My K4 & KPA-1500 too 
compelling! $750 plus $25 UPS Insured shipping.
Contact direct:
H. Cary, K4TM
Cell: 434-660-8299
Email: H3cary at Gmail dot Com
LYNCHBURG VA

Sent from the QTH of K4TM in the foothills of the beautiful Blue Ridge 
mountains of Virginia with my iPad.
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[Elecraft] K2/100 for sale

[Brian Rae via Elecraft]

For sale is my K2/100.  In January, Dave Van Wallaghen of W8FGU Services 
performed an alignment/calibration and installed the KPA100 upgrade kit. From a 
non-smoking home in very good condition.
 

The K2 is fitted with the following options: 
KNB2 noise blanker

KSB2 SSB adapter with mic jack configured for Elecraft mics

KDSP2 internal dsp filter and clock

DC power cable with Anderson Power Pole on one end and ring terminals at other


Also included are the manuals for radio and options.
Asking $1200 plus $25 shipping to continental US. Payment by USPS money order 
or certified check. Photos provided upon request.

 
Please reply off list to br1...@yahoo.com if interested.

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[Elecraft] K2/100 for sale

[Brian Rae via Elecraft]

For sale is my K2/100 in very good condition.  In January of this year Dave Van 
Wallaghen of W8FGU Services performed an alignment and calibration and 
installed the KPA100 upgrade kit.
 

The K2 is fitted with the following options: 
KNB2 noise blanker

KSB2 SSB adapter with mic jack configured for Elecraft mics

KDSP2 internal dsp filter and clock

DC power cable with Anderson Power Pole on one end and ring terminals at other


Also included are the manuals for radio and options.
The price is $1400 plus $25 shipping to continental US. Payment by USPS money 
order or certified check. Photos provided upon request.

 
Please reply off list to br1...@yahoo.com if interested.


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[Elecraft] K2/100 + KAT100 donation offer

[Augie "Gus" Hansen]

KN1CBR, a long-time Elecraft user and builder of several K2 
transceivers, is downsizing and has a K2 + KAT100 system that he wants 
to donate to an organization that helps new hams get started. Donee must 
be a school or 501(c)(3) organization that will use the gear rather than 
sell it for cash.


If you are interested and feel qualified to participate in this effort 
please contact Ed (Ted on CW) directly at this email address:

    eda...@law.du.edu

The system is in excellent condition and works well. Here are the 
components offered as a package.


K2 transceiver (SN76XX)
- 100 watt PA installed
- Original QRP top with speaker (no options)
- AF filter and RTC board
- SSB module
- Noise blanker board
- KIO2 interface board
- MH2 microphone
- Lightweight headphones (earbuds)
- Misc. cables for computer interfacing, etc.

KAT100 tuner in the low-profile case
- Strapped beneah the K2 with four "hook and loop" straps
- All needed cables for connecting the units

Power Werx SS-30DV power supply

There is also a box with spare parts and tools from several K2 builds.

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[Elecraft] For Sale: Elecraft K2/100

[David Inger]

I have for sale a very nice K2 (100 watt version).  I am the second owner.  The 
radio received a full check out and alignment by Dave Van Wallaghen W8FGU.  I 
also had Dave add the fixed audio output board and rear panel jack.  This 
option provide a much more stable audio signal for digital modes such as FT-8, 
etc.  This is a great compact and solid performing radio.  It is also in 
excellent physical condition.

The radio includes the following Elecraft options:

• KSB2 SSB adapter (wired for Kenwood/Elecraft mics)
• KNB2 Noise Blanker
• K160RX 160-meter and receive antenna port
• KIOS2 RS-232 interface board with USB adapter cable
• Power cable with Anderson PowerPoles on each end

I also have all of the assembly/operation manuals for radio and options.  The 
price for the K2 is $900.00 firm plus $25 shipping.  I also have available a 
Signalink USB digital interface with all required cables for digital mode 
operations.  I will sell this package for an additional $50 to the buyer of the 
radio.  Payment by USPS Money Order, Zelle or personal check pending bank 
clearance.  Pictures will be available to interested buyers.

73 de K6SBA
David in Santa Barbara, CA


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[Elecraft] For Sale Elecraft K2/100

[David Inger]

I have for sale my K2 (100-watt version).  I am the second owner.  In 2020, I 
sent the radio to Dave Van Wallaghen W8FGU for a complete alignment and 
checkout.  Dave insured that all relevant upgrades had been installed.  I also 
had Dave install the fixed audio output board and rear panel jack.  This option 
provides a more stable audio output for use with digital modes such as FT-8.  
This is a great, compact and solid performing radio.  It is also in excellent 
physical condition.

The K2 is fitted with the following options:

* KSB2 SSB adapter with mic jack wired for Kenwood/Elecraft mics.
* KNB2 Noise Blanker
* KIOS2 R-232 board with serial-to-USB adapter cable
* K160RX module which add 160-meter operation and receive antenna port
* DC power cable with Anderson PowerPoles on both ends.

I have most of the original assembly/operations manuals for the radio and 
options. The price is $900 firm + $25 shipping to any US Zip Code.  Payment by 
USPS money order, Zelle or personal check (shipping pending bank clearance).  
Pictures are available to interested buyers.

I also have a Signalink USB interface with all the necessary cables to get the 
K2 on the digital modes.  The price is $50 to the buyer of the K2.

73 de K6SBA

David in Santa Barbara, CA
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[Elecraft] K2-100 Trade For KAT-500.

[Ramon Batista]

I Have A Pair Of K2-100, I’m Trading 1 K2-100 With All Filters, Hand Mic,
Power Cord, DSP, SSB, NB And More, Trading For KAT-500.
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[Elecraft] K2-100 at Dayton

[Tim O'Rourke W4YN]

GM Elecraft hamsters de W4YN

I will have my K2-100 for sale at Dayton vendor stall 9439 front flea 
market area.


Has all the main options tuner, ssb, dsp, clock, 160M, rx antenna etc.

Somewhat unique in that the 100W PA and tuner are in a matching K2 
enclosure leaving the 10W K2 intact for portable opps.


If your interested drop me a note at w...@earthlink.net or txt to 
704-453-1958


Safe travels if your coming to Xenia.

73 Tim W4YN


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[Elecraft] K2/100 with ATU for sale

[Tim Tucker]

This is a listing for a local ham, W6KLE who is not on this list.  He would
like to sell his K2/100 with DSP and ATU (10-80m).  The rig is pristine and
the asking price is $1400.  Contact me off list for contact info.

Tim
--
Owner, worldwidedx.com
AE6LX, Amateur Radio
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[Elecraft] K2/100 with DSP/AutoTuner for sale

[Tim Tucker]

This is a listing for W6KLE, a local ham not on this list.  He would like
to sell his very nice K2/100 that was built by Don Wilhelm.  It is 10m-80m
with the auto tuner, DSP, and all the manuals.  I have used this rig and it
is in perfect working condition.  He's asking $1400.  Contact me off list
for contact details.  He is a motivated seller because he wants to buy my
K3 :)

Tim
--
Owner, worldwidedx.com
AE6LX, Amateur Radio
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Re: [Elecraft] K2/100 audio

[Terry Bassett]

Thanks, I'll check them out.

On Tue, Dec 21, 2021, 1:19 PM Don Wilhelm  wrote:

> Edward and Terry,
>
> The SSBCAPKT was released November 2004.KSB2 kits built before that
> had a 2.1 khz filter.
> Look at  your KSB2 board.  If CB and CN positions are populated, you
> have the narrow 2.1 khz filter width.
>
> Download the instructions for the SSBCAPKT
> (https://ftp.elecraft.com/K2/Manuals%20Downloads/SSBCAPKT.pdf) and pay
> close attention to the 2nd page to see if  your BFO range will support
> the 2.6 khz width.  If not you will have to use the 2.4 kHz width.
> You will want to use Spectrogram for alignment - but the link in that
> document will no longer work.  You can find a good download on my
> website www.w3fpr.com - scroll the homepage to near the bottom to find
> the links to the files resident on my website.
> Position the 'knee' of the low frequency slope of the passband.
> See http://www.mmccs.com/mmarc/n0ss/k2_filters_using_gram_v5r17.pdf if
> you are not familiar with setup and use of Spectrogram.
>
> 73,
> Don W3FPR
>
> On 12/21/2021 9:31 AM, Dave Van Wallaghen wrote:
> > I am sure Don may be able to answer when the KSB2 came out with a
> > wider crystal filter response, but the early on versions of the KSB2
> > came standard with a 2.1kHz filter. Today it is 2.4kHz. If you look at
> > your KSB2 module and take a look at the lettered capacitors around the
> > crystals and you have caps installed in the B and N positions, then it
> > has a 2.1kHz filter (I think all of those caps were mostly blue in
> > color as well).
> >
> > Elecraft sells a capacitor kit to convert the KSB2 to a 2.4kHz or
> > 2.6kHz filter by changing those lettered caps with different values to
> > increase the width. It is called the SSBCAPKT and found on the site
> > here:
> >
> https://elecraft.com/products/ssbcapkt_ksb2-wider-bandwidth-capacitor-kit.
>
> > As I mentioned, 2.4kHz has been the standard width sold with the KSB2
> > for a number of years now.
> >
> > Another thing to keep in mind is that there was also a crystal type
> > change applied as well to provide a flatter response and improve audio
> > quality. Again, looking at your KSB2 module, if the crystals have a
> > "-S' suffix on them, then you already have the newer crystals. If not,
> > you can upgrade them (and you may want to upgrade your CW crystals at
> > the same time if they do not have the "-S" suffix). There is a crystal
> > kit called K2KSB2XTLS that contains 14 crystals to replace both the
> > KSB2 and K2 CW crystals.
> >
> > It is preferred to replace the caps and crystals at the same time as
> > it is easier to replace those tiny caps while the old crystals are
> > removed from the KSB2 board. Replace the caps first for your desired
> > width and then the crystals. It does make quite a bit of difference in
> > audio response.
> >
> > 73,
> > Dave, W8FGU
> >
> >
> > On 12/21/2021 9:11:33 AM, "Edward Tanton"  wrote:
> >
> >> I too would be interested in hearing the answer for this. I am NOT a
> >> big SSB person, but would always prefer fidelity on the 1% of such
> >> QSOs. Sent from my T-Mobile 4G LTE Device
> >>  Original message From: Terry Bassett
> >>  Date: 12/21/21  9:01 AM (GMT-05:00) To:
> >> elecraft@mailman.qth.net Subject: [Elecraft] K2/100 audio I assembled
> >> my k2/100 quite some time ago. I finally used it on ssb. I wastold my
> >> audio was too tight. I think the early ones were setup for
> >> contestaudio. Mine was about serial number 3400 or so.My question is
> >> this: what can I do to change it to more of a ragchew styleof
> >> audio?TIAW9TRB
> >>
> Terry__Elecraft
> >> mailing listHome:
> >> http://mailman.qth.net/mailman/listinfo/elecraftHelp:
> >> http://mailman.qth.net/mmfaq.htmPost:
> >> mailto:elecr...@mailman.qth.netThis list hosted by:
> >> http://www.qsl.netPlease help support this email list:
> >> http://www.qsl.net/donate.htmlMessage delivered to n...@comcast.net
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> >> Message delivered to d...@w8fgu.com
> 

Re: [Elecraft] K2/100 audio

[Don Wilhelm]

Edward and Terry,

The SSBCAPKT was released November 2004.    KSB2 kits built before that 
had a 2.1 khz filter.
Look at  your KSB2 board.  If CB and CN positions are populated, you 
have the narrow 2.1 khz filter width.


Download the instructions for the SSBCAPKT 
(https://ftp.elecraft.com/K2/Manuals%20Downloads/SSBCAPKT.pdf) and pay 
close attention to the 2nd page to see if  your BFO range will support 
the 2.6 khz width.  If not you will have to use the 2.4 kHz width.
You will want to use Spectrogram for alignment - but the link in that 
document will no longer work.  You can find a good download on my 
website www.w3fpr.com - scroll the homepage to near the bottom to find 
the links to the files resident on my website.

Position the 'knee' of the low frequency slope of the passband.
See http://www.mmccs.com/mmarc/n0ss/k2_filters_using_gram_v5r17.pdf if 
you are not familiar with setup and use of Spectrogram.


73,
Don W3FPR

On 12/21/2021 9:31 AM, Dave Van Wallaghen wrote:
I am sure Don may be able to answer when the KSB2 came out with a 
wider crystal filter response, but the early on versions of the KSB2 
came standard with a 2.1kHz filter. Today it is 2.4kHz. If you look at 
your KSB2 module and take a look at the lettered capacitors around the 
crystals and you have caps installed in the B and N positions, then it 
has a 2.1kHz filter (I think all of those caps were mostly blue in 
color as well).


Elecraft sells a capacitor kit to convert the KSB2 to a 2.4kHz or 
2.6kHz filter by changing those lettered caps with different values to 
increase the width. It is called the SSBCAPKT and found on the site 
here: 
https://elecraft.com/products/ssbcapkt_ksb2-wider-bandwidth-capacitor-kit. 
As I mentioned, 2.4kHz has been the standard width sold with the KSB2 
for a number of years now.


Another thing to keep in mind is that there was also a crystal type 
change applied as well to provide a flatter response and improve audio 
quality. Again, looking at your KSB2 module, if the crystals have a 
"-S' suffix on them, then you already have the newer crystals. If not, 
you can upgrade them (and you may want to upgrade your CW crystals at 
the same time if they do not have the "-S" suffix). There is a crystal 
kit called K2KSB2XTLS that contains 14 crystals to replace both the 
KSB2 and K2 CW crystals.


It is preferred to replace the caps and crystals at the same time as 
it is easier to replace those tiny caps while the old crystals are 
removed from the KSB2 board. Replace the caps first for your desired 
width and then the crystals. It does make quite a bit of difference in 
audio response.


73,
Dave, W8FGU


On 12/21/2021 9:11:33 AM, "Edward Tanton"  wrote:

I too would be interested in hearing the answer for this. I am NOT a 
big SSB person, but would always prefer fidelity on the 1% of such 
QSOs. Sent from my T-Mobile 4G LTE Device
 Original message From: Terry Bassett 
 Date: 12/21/21  9:01 AM (GMT-05:00) To: 
elecraft@mailman.qth.net Subject: [Elecraft] K2/100 audio I assembled 
my k2/100 quite some time ago. I finally used it on ssb. I wastold my 
audio was too tight. I think the early ones were setup for 
contestaudio. Mine was about serial number 3400 or so.My question is 
this: what can I do to change it to more of a ragchew styleof 
audio?TIAW9TRB 
Terry__Elecraft 
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Re: [Elecraft] K2/100 audio

[Dave Van Wallaghen]

I am sure Don may be able to answer when the KSB2 came out with a wider 
crystal filter response, but the early on versions of the KSB2 came 
standard with a 2.1kHz filter. Today it is 2.4kHz. If you look at your 
KSB2 module and take a look at the lettered capacitors around the 
crystals and you have caps installed in the B and N positions, then it 
has a 2.1kHz filter (I think all of those caps were mostly blue in color 
as well).


Elecraft sells a capacitor kit to convert the KSB2 to a 2.4kHz or 2.6kHz 
filter by changing those lettered caps with different values to increase 
the width. It is called the SSBCAPKT and found on the site here: 
https://elecraft.com/products/ssbcapkt_ksb2-wider-bandwidth-capacitor-kit. 
As I mentioned, 2.4kHz has been the standard width sold with the KSB2 
for a number of years now.


Another thing to keep in mind is that there was also a crystal type 
change applied as well to provide a flatter response and improve audio 
quality. Again, looking at your KSB2 module, if the crystals have a "-S' 
suffix on them, then you already have the newer crystals. If not, you 
can upgrade them (and you may want to upgrade your CW crystals at the 
same time if they do not have the "-S" suffix). There is a crystal kit 
called K2KSB2XTLS that contains 14 crystals to replace both the KSB2 and 
K2 CW crystals.


It is preferred to replace the caps and crystals at the same time as it 
is easier to replace those tiny caps while the old crystals are removed 
from the KSB2 board. Replace the caps first for your desired width and 
then the crystals. It does make quite a bit of difference in audio 
response.


73,
Dave, W8FGU


On 12/21/2021 9:11:33 AM, "Edward Tanton"  wrote:


I too would be interested in hearing the answer for this. I am NOT a big SSB 
person, but would always prefer fidelity on the 1% of such QSOs. Sent from my 
T-Mobile 4G LTE Device
 Original message From: Terry Bassett  
Date: 12/21/21  9:01 AM  (GMT-05:00) To: elecraft@mailman.qth.net Subject: [Elecraft] 
K2/100 audio I assembled my k2/100 quite some time ago. I finally used it on ssb. I 
wastold my audio was too tight. I think the early ones were setup for contestaudio. 
Mine was about serial number 3400 or so.My question is this: what can I do to change 
it to more of a ragchew styleof audio?TIAW9TRB 
Terry__Elecraft mailing 
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Re: [Elecraft] K2/100 audio

[Edward Tanton]

I too would be interested in hearing the answer for this. I am NOT a big SSB 
person, but would always prefer fidelity on the 1% of such QSOs. Sent from my 
T-Mobile 4G LTE Device
 Original message From: Terry Bassett  
Date: 12/21/21  9:01 AM  (GMT-05:00) To: elecraft@mailman.qth.net Subject: 
[Elecraft] K2/100 audio I assembled my k2/100 quite some time ago. I finally 
used it on ssb. I wastold my audio was too tight. I think the early ones were 
setup for contestaudio. Mine was about serial number 3400 or so.My question is 
this: what can I do to change it to more of a ragchew styleof audio?TIAW9TRB 
Terry__Elecraft 
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[Elecraft] K2/100 audio

[Terry Bassett]

I assembled my k2/100 quite some time ago. I finally used it on ssb. I was
told my audio was too tight. I think the early ones were setup for contest
audio. Mine was about serial number 3400 or so.

My question is this: what can I do to change it to more of a ragchew style
of audio?

TIA

W9TRB Terry
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Re: [Elecraft] K2/100 in a high RF environment

[Fred Jensen]

One never knows, Chuck, RF can be very unpredictable.  If the TBL were 
feeding coax, you'd probably be OK just disconnecting the K2/KAT 
antenna.  Given that part of the TX antenna is inside the shack a few ft 
away and shipboard HF antennas are rarely resonant, I would plug a 
shorted PL259 into all the Elecraft ant connectors.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

Chuck Chandler wrote on 11/6/2021 6:00 AM:

Some background here -

I volunteer aboard the museum ship USS Slater in Albany.  She is a
destroyer escort restored to her 1945 configuration as she was sent from
the Atlantic to the Pacific after VE day.

I try to put it on the air every time I'm there, once a week or so,
maintenance issues allowing.  We use a K2/100 and KAT100 patched through a
WW2 vintage Transmitter Transfer Panel to a choice of the ships original
wire antennas.  These were mostly verticals used for receiving back in the
day.  We can also use the two original transmitting antennas, long wires
running fore and aft.

We are restoring a TBL 400 watt transmitter, which is only connected to the
fore and aft long wires.  The output exits the top of the TBL cabinet and
consists of copper tubing that runs along the ceiling (I know, overhead...
I'm a civilian) to where it exits Radio Central.

Legend has it (and I have no reason to doubt it, I've seen the repair
invoice) that the last time the TBL was fired up the KAT100 was damaged.
Our practice is to unplug the feedlines to the KAT100 at the Antenna
Transfer Panel, as well as where they connect to the rear of the KAT100
itself.

The repair invoice says “The wattmeter in this KAT100 had been damaged. D1
and D2 were replaced. R1 was found to be open and replaced. C31 was not
well soldered. “

Im wondering if unplugging both antenna feed lines from the KAT100 is
enough protection from a 400 watt transmitter firing up a few feet away?


73 de Chuck, WS1L

chandler...@gmail.com


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[Elecraft] K2/100 in a high RF environment

[Chuck Chandler]

Some background here -

I volunteer aboard the museum ship USS Slater in Albany.  She is a
destroyer escort restored to her 1945 configuration as she was sent from
the Atlantic to the Pacific after VE day.

I try to put it on the air every time I'm there, once a week or so,
maintenance issues allowing.  We use a K2/100 and KAT100 patched through a
WW2 vintage Transmitter Transfer Panel to a choice of the ships original
wire antennas.  These were mostly verticals used for receiving back in the
day.  We can also use the two original transmitting antennas, long wires
running fore and aft.

We are restoring a TBL 400 watt transmitter, which is only connected to the
fore and aft long wires.  The output exits the top of the TBL cabinet and
consists of copper tubing that runs along the ceiling (I know, overhead...
I'm a civilian) to where it exits Radio Central.

Legend has it (and I have no reason to doubt it, I've seen the repair
invoice) that the last time the TBL was fired up the KAT100 was damaged.
Our practice is to unplug the feedlines to the KAT100 at the Antenna
Transfer Panel, as well as where they connect to the rear of the KAT100
itself.

The repair invoice says “The wattmeter in this KAT100 had been damaged. D1
and D2 were replaced. R1 was found to be open and replaced. C31 was not
well soldered. “

Im wondering if unplugging both antenna feed lines from the KAT100 is
enough protection from a 400 watt transmitter firing up a few feet away?


73 de Chuck, WS1L

chandler...@gmail.com
-- 
Sent from Gmail Mobile Chuck Chandler chandler...@gmail.com
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Re: [Elecraft] K2/100 RS232 trouble

[Geert Jan de Groot]

The problem of using a standard cable with the serial port is not that
it might fail to operate as a serial port, but rather than it might
permanently destroy the (non-RS232) internal signalling within the
transceiver.

...

In fact there seem to be two pins that are used for signals that cannot
tolerate RS232 voltages.


The K2 "A to B mod" has some modifications that at least seem to reduce 
some of the damage. I don't remember it being announced as such, but 
reviewing the mod status of my K2 after some time found some snippets I 
had not seen before.
Things still would not work and I am not sure the K2 is fully protected 
but some protection is added and the damage should be less.


If you still did make the boo-boo, this link from LA3ZA may be useful:
http://folk.uio.no/sverre/LA3ZA/blog/K2/N0SS/k2_wrong_ser_cbl_damage.pdf

Geert Jan
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Re: [Elecraft] K2/100 RS232 trouble

[David Woolley]

The problem of using a standard cable with the serial port is not that 
it might fail to operate as a serial port, but rather than it might 
permanently destroy the (non-RS232) internal signalling within the 
transceiver.


If that signalling is destroyed, the set won't be able to do anything 
useful, so won't be able to operate the serial port.


In fact there seem to be two pins that are used for signals that cannot 
tolerate RS232 voltages.


This is only a may, because it depends on which wires in the cable are 
actually connected at the other end.  The special cable basically leaves 
some pins unconnected.


--
David Woolley
Owner K2 06123
On 10/09/2021 13:12, Andy McMullin wrote:

You are using the special RS232 cable aren’t you? You must connect with a cable 
matching the special pinout first. If you try a straight connection it will 
fail.



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Re: [Elecraft] K2/100 RS232 trouble

[bo.andersson]

Sorry guys, suddenly everything works fine again, just like that 

 

Best 73 de SM6FPG / Bo

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[Elecraft] K2/100 RS232 trouble

[bo.andersson]

Can you see any signal on AUXBUS on U2 pin 12 from control board on K2?

A friend tested with an oscilloscope on U2 pin 12 but there was no signal if
I changed the frequency on vfo

 

/SM6FPG Bo

 

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[Elecraft] K2/100 RS232 trouble

[bo.andersson]

Yes I use the special K2 cable

 

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Re: [Elecraft] K2/100 RS232 trouble

[David Pratt]

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Re: [Elecraft] K2/100 RS232 trouble

[Andy McMullin via Elecraft]

Bo,

You are using the special RS232 cable aren’t you? You must connect with a cable 
matching the special pinout first. If you try a straight connection it will 
fail.

Try the K2 and its cable into an interface unit such as the Modular Technology 
interfaker (like https://www.ebay.co.uk/itm/224519972647 
) or something smaller such as 
https://cpc.farnell.com/pro-signal/t-mb460p/rs232-check-tester/dp/CS11237?ost=pro+signal+t-mb460
 

 

Check you have enabled the necessary handshake pins, and are receiving the same 
from the USB interface.

Hope this helps
Andy


> On 10 Sep 2021, at 12:38,   
> wrote:
> 
> 
> 
> Hi
> 
> 
> 
> RS232 does not work to K2 / 100 via usb.
> 
> Have tested various rs232 / usb adapters, also brand new.
> 
> The correct values ​​are entered in the computer for the port.
> 
> All measured values ​​of U4 MAX1406 are according to Table 4 IC DC voltage 
> chart.
> 
> Has also changed U4 to a new one.
> 
> Is it the control board on K2 that is faulty?
> 
> How do I investigate this? 
> 
> SM6FPG/Bo
> 
> 
> 
> 
> 
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[Elecraft] .[K2/100] RS232 trouble

[bo.andersson]

Hi

RS232 does not work to K2 / 100 via usb.

Have tested various rs232 / usb adapters, also brand new.

The correct values ​​are entered in the computer for the port.

All measured values ​​of U4 MAX1406 are according to Table 4 IC DC voltage 
chart.

Has also changed U4 to a new one.

Is it the control board on K2 that is faulty?

How do I investigate this? 

SM6FPG/Bo

 

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[Elecraft] K2/100 RS232 trouble

[bo.andersson]

 

Hi

 

RS232 does not work to K2 / 100 via usb.

Have tested various rs232 / usb adapters, also brand new.

The correct values ​​are entered in the computer for the port.

All measured values ​​of U4 MAX1406 are according to Table 4 IC DC voltage 
chart.

Has also changed U4 to a new one.

Is it the control board on K2 that is faulty?

How do I investigate this? 

SM6FPG/Bo

 





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Re: [Elecraft] K2/100 RF gain knob inoperable

[jerry]

All,

  The AF gain pot on my K2/10 was quite scratchy when I got it.  A few 
days

of ham activity, plus some whacking it back & forth, cured it.  No more
scratches.  Worth trying.

   - Jerry KF6VB


On 2021-08-16 08:59, Don Wilhelm wrote:

Mike,

First set the AGC Threshold voltage, and then check the operation of
the RF Gain to see if you can get the CAL S LO and CAL S HI settings
to fall in line.
It is not likely that replacing the pot will fix it.

For a scratchy AF Gain control, replace the control, as well as doing
the Alternate AF Gain Wiring Modification.  You can download the
instructions from the Elecraft website.

73,
Don W3FPR

On 8/16/2021 10:27 AM, Mike Seiffert wrote:

Hi Folks,
I have an Elecraft K2/100 (S/N 01136) given to me by father (SK) some 
years ago. I am finally finding some time again for ham radio and 
would like to get this rig up and working well.  It has the A to B 
mods applied, and includes the options for SSB, DSP, 160/Rx ant, etc. 
I have applied the BFO and PLL upgrades.


My current problem is that the RF gain knob doesn’t seem to do 
anything. I was expecting to hear some difference in the level of 
received signals and to see the S-meter go to the right as I turn the 
knob fully CCW. Turning this knob seems to have no affect on anything.


Any help would be appreciated!  I mention the following details in 
case they are relevant: my father was mostly interested in 160m cw, so 
I’m not sure if other aspects of the radio received attention when he 
built it. The AF gain knob is scratchy - I’ve read about the mod that 
addresses this, but haven’t yet applied it. The AGC needs adjustment - 
I can tell the difference in volume AGC On vs off with no antenna 
connected. I don’t know that any of these are related to the RF gain.


Before I open things up to measure and replace the RF gain pot, are 
there other things I should check?  A quick check of the email 
reflector archive didn’t turn up anything obvious to me.





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Re: [Elecraft] K2/100 RF gain knob inoperable

[Don Wilhelm]

Mike,

First set the AGC Threshold voltage, and then check the operation of the 
RF Gain to see if you can get the CAL S LO and CAL S HI settings to fall 
in line.

It is not likely that replacing the pot will fix it.

For a scratchy AF Gain control, replace the control, as well as doing 
the Alternate AF Gain Wiring Modification.  You can download the 
instructions from the Elecraft website.


73,
Don W3FPR

On 8/16/2021 10:27 AM, Mike Seiffert wrote:

Hi Folks,
I have an Elecraft K2/100 (S/N 01136) given to me by father (SK) some years 
ago. I am finally finding some time again for ham radio and would like to get 
this rig up and working well.  It has the A to B mods applied, and includes the 
options for SSB, DSP, 160/Rx ant, etc. I have applied the BFO and PLL upgrades.

My current problem is that the RF gain knob doesn’t seem to do anything. I was 
expecting to hear some difference in the level of received signals and to see 
the S-meter go to the right as I turn the knob fully CCW. Turning this knob 
seems to have no affect on anything.

Any help would be appreciated!  I mention the following details in case they 
are relevant: my father was mostly interested in 160m cw, so I’m not sure if 
other aspects of the radio received attention when he built it. The AF gain 
knob is scratchy - I’ve read about the mod that addresses this, but haven’t yet 
applied it. The AGC needs adjustment - I can tell the difference in volume AGC 
On vs off with no antenna connected. I don’t know that any of these are related 
to the RF gain.

Before I open things up to measure and replace the RF gain pot, are there other 
things I should check?  A quick check of the email reflector archive didn’t 
turn up anything obvious to me.




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[Elecraft] K2/100 RF gain knob inoperable

[Mike Seiffert]

Hi Folks,
I have an Elecraft K2/100 (S/N 01136) given to me by father (SK) some years 
ago. I am finally finding some time again for ham radio and would like to get 
this rig up and working well.  It has the A to B mods applied, and includes the 
options for SSB, DSP, 160/Rx ant, etc. I have applied the BFO and PLL upgrades.

My current problem is that the RF gain knob doesn’t seem to do anything. I was 
expecting to hear some difference in the level of received signals and to see 
the S-meter go to the right as I turn the knob fully CCW. Turning this knob 
seems to have no affect on anything. 

Any help would be appreciated!  I mention the following details in case they 
are relevant: my father was mostly interested in 160m cw, so I’m not sure if 
other aspects of the radio received attention when he built it. The AF gain 
knob is scratchy - I’ve read about the mod that addresses this, but haven’t yet 
applied it. The AGC needs adjustment - I can tell the difference in volume AGC 
On vs off with no antenna connected. I don’t know that any of these are related 
to the RF gain. 

Before I open things up to measure and replace the RF gain pot, are there other 
things I should check?  A quick check of the email reflector archive didn’t 
turn up anything obvious to me. 

73,
Mike AE6NH 
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Re: [Elecraft] K2/100

[Don Wilhelm]

Doug,

Peer into the side of the KPA100 (the side where the coax and power 
connections are) - If you see blue toroid cores, the upgrade has been 
done.  If you can only see red toroid cores in about the middle of the 
board, the lastest update is not installed.


73,
Don W3FPR

On 5/11/2021 1:00 PM, Doug Person wrote:
Do you happen to know at what point the upgrades were included? Is 
there an easy way to determine if the update is present or Not?




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Re: [Elecraft] K2/100

[Doug Person]

Do you happen to know at what point the upgrades were included? Is there 
an easy way to determine if the update is present or Not?


tnx -- Doug -- K0DXV

On 5/10/2021 2:56 PM, Don Wilhelm wrote:

Larry,

The KPA100UPKT totally revamps the T-R switch section on the KPA100, 
so the answer is yes.
There is a chance that there may be a nasty spur when on 40 meters - 
at about 8 MHz if you do not have the upgrade.


73,
Don W3FPR


On 5/10/2021 4:04 PM, Larry Dodson via Elecraft wrote:
I built my KPA100 14 years ago in a separate enclosure and it still 
works
fine. I wonder if the upgrade kit would provide improved performance. 
Any

feed back will be appreciated.
Larry - GOIKE



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Re: [Elecraft] K2/100

[Don Wilhelm]

Larry,

The KPA100UPKT totally revamps the T-R switch section on the KPA100, so 
the answer is yes.
There is a chance that there may be a nasty spur when on 40 meters - at 
about 8 MHz if you do not have the upgrade.


73,
Don W3FPR


On 5/10/2021 4:04 PM, Larry Dodson via Elecraft wrote:

I built my KPA100 14 years ago in a separate enclosure and it still works
fine. I wonder if the upgrade kit would provide improved performance. Any
feed back will be appreciated.
Larry - GOIKE



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[Elecraft] K2/100

[Larry Dodson via Elecraft]

I built my KPA100 14 years ago in a separate enclosure and it still works
fine. I wonder if the upgrade kit would provide improved performance. Any
feed back will be appreciated.
Larry - GOIKE
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Re: [Elecraft] K2/100 up-date

[Louandzip via Elecraft]

 Great.  Thanks for the tip.  Downloaded and added to my ham to-do list, which 
is rapidly getting lengthier. HI HI.
Lou W7HV

On Monday, May 10, 2021, 8:35:36 AM MDT, Don Wilhelm  
wrote:  
 
 Lou,

Download the K2 A to B instructions and inspect your K2 to see which 
mods have been installed.
Physical inspection is the only way I know to do it.

73,
Don W3FPR

On 5/10/2021 8:21 AM, Louandzip via Elecraft wrote:
>  One thing that's holding me up is doing the research to figure out which 
>mods I've done and which I should do.  Mine is 1818 and I fervently kept up 
>with all the mods, updates, and tweaks for 3 or 4 years after I built it.  You 
>mention replacing the IF xtals. I know I did that at some point because I have 
>a little paper envelope with the set I pulled out, and I remember doing the 
>improved grounding mod of soldering the grounding wires to the base of the 
>xtal cans. IIRC, at the time some were adding additional SMT bypass caps at 
>the xtals but IDK where that went.  There were many temp drift tweaks and mods 
>going on too and I have many pages in my notebook experimenting with those, 
>especially with the heat introduced by the KPA100.  I have lot's of cryptic 
>notes like: "Removed RF C180 to flatten 2nd IF filter.  Added 10pF NPO in 
>parallel with C72 to reduce VCO voltages.  Set L30 for 6V.  Removed 1 PLL xtal 
>X1 per Wayne." and it goes on.
>
> Perhaps the main obstacle is it's still working FB for me.  There's always 
> that sage piece of wisdom lurking in the back of my mind, "Don't fix it if it 
> ain't broke."  HI HI
> Lou W7HV
>
>

  
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Re: [Elecraft] K2/100 up-date

[Don Wilhelm]

Lou,

Download the K2 A to B instructions and inspect your K2 to see which 
mods have been installed.

Physical inspection is the only way I know to do it.

73,
Don W3FPR

On 5/10/2021 8:21 AM, Louandzip via Elecraft wrote:

  One thing that's holding me up is doing the research to figure out which mods I've done 
and which I should do.  Mine is 1818 and I fervently kept up with all the mods, updates, 
and tweaks for 3 or 4 years after I built it.  You mention replacing the IF xtals. I know 
I did that at some point because I have a little paper envelope with the set I pulled 
out, and I remember doing the improved grounding mod of soldering the grounding wires to 
the base of the xtal cans. IIRC, at the time some were adding additional SMT bypass caps 
at the xtals but IDK where that went.  There were many temp drift tweaks and mods going 
on too and I have many pages in my notebook experimenting with those, especially with the 
heat introduced by the KPA100.  I have lot's of cryptic notes like: "Removed RF C180 
to flatten 2nd IF filter.  Added 10pF NPO in parallel with C72 to reduce VCO voltages.  
Set L30 for 6V.  Removed 1 PLL xtal X1 per Wayne." and it goes on.

Perhaps the main obstacle is it's still working FB for me.  There's always that sage 
piece of wisdom lurking in the back of my mind, "Don't fix it if it ain't 
broke."  HI HI
Lou W7HV




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Re: [Elecraft] K2/100 up-date

[Louandzip via Elecraft]

 One thing that's holding me up is doing the research to figure out which mods 
I've done and which I should do.  Mine is 1818 and I fervently kept up with all 
the mods, updates, and tweaks for 3 or 4 years after I built it.  You mention 
replacing the IF xtals. I know I did that at some point because I have a little 
paper envelope with the set I pulled out, and I remember doing the improved 
grounding mod of soldering the grounding wires to the base of the xtal cans. 
IIRC, at the time some were adding additional SMT bypass caps at the xtals but 
IDK where that went.  There were many temp drift tweaks and mods going on too 
and I have many pages in my notebook experimenting with those, especially with 
the heat introduced by the KPA100.  I have lot's of cryptic notes like: 
"Removed RF C180 to flatten 2nd IF filter.  Added 10pF NPO in parallel with C72 
to reduce VCO voltages.  Set L30 for 6V.  Removed 1 PLL xtal X1 per Wayne." and 
it goes on. 

Perhaps the main obstacle is it's still working FB for me.  There's always that 
sage piece of wisdom lurking in the back of my mind, "Don't fix it if it ain't 
broke."  HI HI
Lou W7HV  

On Sunday, May 9, 2021, 6:40:05 PM MDT, Don Wilhelm  wrote: 
 
 
 Greert Jan de Groot,

If you have an earlier K2, I suggest that you do the other upgrades.
If your K2 is below SN 3000, then the K2ATOB mods are applicable - 
download the K2ATOB instructions for a list of all the mods are required.
If your SN is below 2560, I recommend replacing the IF crystals for a 
better IF filter response.
Those steps will bring it up to date except for the K2 Keying Waveshape 
mod which is currently not available from Elecraft as a kit.  I can give 
you instructions on how to install it on your K2 if necessary.  K2s 
above SN 4660 have that mod already installed.

73,
Don W3FPR



On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:
> On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:
>> Don, W3FPR used to do much of this work on K2 transceivers, but he has
>> retired from that role.  Dave, W8FGU has assumed Don's role. Alan, W3DVX
>> also provides such services.  Both have posted periodically to this 
>> forum.
>> There may be others who are experienced K2 upgraders, but these are the
>> folks that come to mind.
>
> I built my KPA100 15 years ago or so and only recently I investigated 
> updates. The KPA module has seen a number of design updates over the 
> years and it makes sense to investigate. I've updated mine (thanks 
> QRP-shop for getting the mod kits in Europe, through Corona times!) 
> and at the end of a long evening I have a bag of swapped-out parts and 
> a PA that worked quite a bit better, feels like a new unit.
>
> I have not used one of the upgraders (being in Europe, postage and 
> customs would probably have me mortgage the house, frankly) but I do 
> recommend updating. It is too bad you don't have the setup to do it 
> yourself because on K2, these mods really are simple and can be done 
> on the kitchen table.
>
> Geert Jan
>

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Re: [Elecraft] K2/100 up-date

[Don Wilhelm]

Greert Jan de Groot,

If you have an earlier K2, I suggest that you do the other upgrades.
If your K2 is below SN 3000, then the K2ATOB mods are applicable - 
download the K2ATOB instructions for a list of all the mods are required.
If your SN is below 2560, I recommend replacing the IF crystals for a 
better IF filter response.
Those steps will bring it up to date except for the K2 Keying Waveshape 
mod which is currently not available from Elecraft as a kit.  I can give 
you instructions on how to install it on your K2 if necessary.  K2s 
above SN 4660 have that mod already installed.


73,
Don W3FPR



On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:

On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role. Alan, W3DVX
also provides such services.  Both have posted periodically to this 
forum.

There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.


I built my KPA100 15 years ago or so and only recently I investigated 
updates. The KPA module has seen a number of design updates over the 
years and it makes sense to investigate. I've updated mine (thanks 
QRP-shop for getting the mod kits in Europe, through Corona times!) 
and at the end of a long evening I have a bag of swapped-out parts and 
a PA that worked quite a bit better, feels like a new unit.


I have not used one of the upgraders (being in Europe, postage and 
customs would probably have me mortgage the house, frankly) but I do 
recommend updating. It is too bad you don't have the setup to do it 
yourself because on K2, these mods really are simple and can be done 
on the kitchen table.


Geert Jan



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Re: [Elecraft] K2/100 up-date

[Don Wilhelm]

Dave,

As I have told you before, I used Gary Surrency on occasion as a 
'sounding board' for several weird problems.  I think we are working in 
a similar relationship, except Gary was still employed by Elecraft, and 
I am now fully retired - I do that on a volunteer basis and my love for 
the Elecraft products.


I still have my K2/twins SN 0020 (fully upgraded), my KX3 (the first one 
shipped - there was a photo of Lisa chasing down the USPS driver) SN 
00020, and my K3 SN 00020 are in the hamshack.
OK, my matching Serial Numbers were by request and Elecraft responded 
positively since the SNs had not yet been assigned.  The original K2 SN 
was assigned at random - 1 chance in 100 and I got 0020 in that draw.


73,
Don W3FPR

On 5/9/2021 6:12 PM, Dave Van Wallaghen wrote:
Wel Don, I don't know about all that. I just try and stump you once in 
awhile  and you know I'm due .


73,
Dave, W8FGU

On May 9, 2021 17:58:37 Don Wilhelm  wrote:


I trust you installed the KPA100UPKT - the KPA100MDKT is not necessary
because all the changes for that mod are included in the KPA100UPKT.

I am still able to answer questions, but I can no longer physically do
the work.  Getting old 'sucks', and I am getting up in years.

I try to help Dave when he runs into a weird problem, but his requests
for assistance have fallen off to a trickle in the past 6 months - I
think he is fully 'on board' and quite capable.

73,
Don W3FPR

On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:

On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role. Alan, 
W3DVX

also provides such services.  Both have posted periodically to this
forum.
There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.


I built my KPA100 15 years ago or so and only recently I investigated
updates. The KPA module has seen a number of design updates over the
years and it makes sense to investigate. I've updated mine (thanks
QRP-shop for getting the mod kits in Europe, through Corona times!)
and at the end of a long evening I have a bag of swapped-out parts and
a PA that worked quite a bit better, feels like a new unit.

I have not used one of the upgraders (being in Europe, postage and
customs would probably have me mortgage the house, frankly) but I do
recommend updating. It is too bad you don't have the setup to do it
yourself because on K2, these mods really are simple and can be done
on the kitchen table.

Geert Jan

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Re: [Elecraft] K2/100 up-date

[Dave Van Wallaghen]

Wel Don, I don't know about all that. I just try and stump you once in 
awhile  and you know I'm due .


73,
Dave, W8FGU
On May 9, 2021 17:58:37 Don Wilhelm  wrote:


I trust you installed the KPA100UPKT - the KPA100MDKT is not necessary
because all the changes for that mod are included in the KPA100UPKT.

I am still able to answer questions, but I can no longer physically do
the work.  Getting old 'sucks', and I am getting up in years.

I try to help Dave when he runs into a weird problem, but his requests
for assistance have fallen off to a trickle in the past 6 months - I
think he is fully 'on board' and quite capable.

73,
Don W3FPR

On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:

On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role. Alan, W3DVX
also provides such services.  Both have posted periodically to this
forum.
There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.


I built my KPA100 15 years ago or so and only recently I investigated
updates. The KPA module has seen a number of design updates over the
years and it makes sense to investigate. I've updated mine (thanks
QRP-shop for getting the mod kits in Europe, through Corona times!)
and at the end of a long evening I have a bag of swapped-out parts and
a PA that worked quite a bit better, feels like a new unit.

I have not used one of the upgraders (being in Europe, postage and
customs would probably have me mortgage the house, frankly) but I do
recommend updating. It is too bad you don't have the setup to do it
yourself because on K2, these mods really are simple and can be done
on the kitchen table.

Geert Jan

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Re: [Elecraft] K2/100 up-date

[Don Wilhelm]

I trust you installed the KPA100UPKT - the KPA100MDKT is not necessary 
because all the changes for that mod are included in the KPA100UPKT.


I am still able to answer questions, but I can no longer physically do 
the work.  Getting old 'sucks', and I am getting up in years.


I try to help Dave when he runs into a weird problem, but his requests 
for assistance have fallen off to a trickle in the past 6 months - I 
think he is fully 'on board' and quite capable.


73,
Don W3FPR

On 5/9/2021 5:36 PM, Geert Jan de Groot wrote:

On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role. Alan, W3DVX
also provides such services.  Both have posted periodically to this 
forum.

There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.


I built my KPA100 15 years ago or so and only recently I investigated 
updates. The KPA module has seen a number of design updates over the 
years and it makes sense to investigate. I've updated mine (thanks 
QRP-shop for getting the mod kits in Europe, through Corona times!) 
and at the end of a long evening I have a bag of swapped-out parts and 
a PA that worked quite a bit better, feels like a new unit.


I have not used one of the upgraders (being in Europe, postage and 
customs would probably have me mortgage the house, frankly) but I do 
recommend updating. It is too bad you don't have the setup to do it 
yourself because on K2, these mods really are simple and can be done 
on the kitchen table.


Geert Jan

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Re: [Elecraft] K2/100 up-date

[Geert Jan de Groot]

On 09/05/2021 20:54, elecraft-requ...@mailman.qth.net wrote:

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role.  Alan, W3DVX
also provides such services.  Both have posted periodically to this forum.
There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.


I built my KPA100 15 years ago or so and only recently I investigated 
updates. The KPA module has seen a number of design updates over the 
years and it makes sense to investigate. I've updated mine (thanks 
QRP-shop for getting the mod kits in Europe, through Corona times!) and 
at the end of a long evening I have a bag of swapped-out parts and a PA 
that worked quite a bit better, feels like a new unit.


I have not used one of the upgraders (being in Europe, postage and 
customs would probably have me mortgage the house, frankly) but I do 
recommend updating. It is too bad you don't have the setup to do it 
yourself because on K2, these mods really are simple and can be done on 
the kitchen table.


Geert Jan

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Re: [Elecraft] K2/100 up-date

[Mike K8CN]

Art,

Don, W3FPR used to do much of this work on K2 transceivers, but he has
retired from that role.  Dave, W8FGU has assumed Don's role.  Alan, W3DVX
also provides such services.  Both have posted periodically to this forum. 
There may be others who are experienced K2 upgraders, but these are the
folks that come to mind.

Mike, K8CN



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[Elecraft] K2/100 up-date

[Arthur Lewis]

*I have a K2/100 I built in 1999 and I added some of the modes through
2005.  I retired in 2009 and moved to Florida. *

*There is a ham that does up dates and filter alignment.  I no longer have
a good bench for this work.  *

*Can someone tell me the name and address of this K2 expert.  I think I
talked to him a year or so back.*

*Thanks*
*Art WA8VSJ*
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Re: [Elecraft] K2/100 with SDRplay?

[cx7tt]

Fantastic Dave,

Tnx for such a quick response.

73
Tom
K2GO
HP1XT

On Fri, Apr 2, 2021, at 09:56, Dave Van Wallaghen wrote:
> Tom,
> 
> I have a complete write up here: https://www.w8fgu.com/k2pan.html
> 
> 73,
> Dave, W8FGU
> 
> 
> On 4/2/2021 10:51:45 AM, cx...@4email.net wrote:
> 
> >My K2 is modified with Z1 IF buffer added. Originally set up for N8LP's 
> >LP-PAN. I no longer have this config.
> >
> >New is the RSPdx from SDRplay that I would like to use.
> >
> >Anyone doing this and if so, what tips, suggestions would you have?
> >
> >73
> >Tom
> >HP1XT aka K2GO
> >
> >
> >__
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> >
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> >Message delivered to d...@w8fgu.com
> 
>
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Re: [Elecraft] K2/100 with SDRplay?

[Dave Van Wallaghen]

Tom,

I have a complete write up here: https://www.w8fgu.com/k2pan.html

73,
Dave, W8FGU


On 4/2/2021 10:51:45 AM, cx...@4email.net wrote:


My K2 is modified with Z1 IF buffer added. Originally set up for N8LP's 
LP-PAN. I no longer have this config.

New is the RSPdx from SDRplay that I would like to use.

Anyone doing this and if so, what tips, suggestions would you have?

73
Tom
HP1XT aka K2GO


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[Elecraft] K2/100 with SDRplay?

[cx7tt]

My K2 is modified with Z1 IF buffer added. Originally set up for N8LP's 
LP-PAN. I no longer have this config.

New is the RSPdx from SDRplay that I would like to use.

Anyone doing this and if so, what tips, suggestions would you have?

73
Tom
HP1XT aka K2GO


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Re: [Elecraft] K2/100 Amp Keying Limits?

[Louandzip via Elecraft]

 My OLD  Rev A 2002 K2/100 manual shows it on page 56.  It'll switch 1A, 
+200VDC via an IRF830 (or IRL620)  MOSFET to ground.  It's on the left middle 
of the second page of the schematic. 

Lou W7HV



On Tuesday, March 16, 2021, 9:23:15 PM MDT, Mike Cizek W0VTT 
 wrote:  
 
 Hello Eric,

It's in theKPA100 manual, at the back under Specifications:

DC relay coil pulled to ground
1A at 200 VDC  (do not use with AC-controlled relay)

P59 in my book, which I just noticed, comes right after p62.


73,
Mike Cizek W0VTT

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of eric norris via Elecraft
Sent: Tuesday, 16 March, 2021 21:11
To: Elecraft Reflector 
Subject: [Elecraft] K2/100 Amp Keying Limits?

Can anyone tell me what the external amplifier keying limits are for a K2/100?  
I'm trying to use an AL811H, which has 14.5V at 10ma on the relay jack.  Do I 
need an external interface?  I cannot find the answer in the K2/100 manual.  
Thanks!

73, Eric WD6DBM

   
  
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Re: [Elecraft] K2/100 Amp Keying Limits?

[John Adams]

Sent you an email Eric.

John.

ve7day


On 16/03/2021 7:10 p.m., eric norris via Elecraft wrote:

Can anyone tell me what the external amplifier keying limits are for a K2/100?  
I'm trying to use an AL811H, which has 14.5V at 10ma on the relay jack.  Do I 
need an external interface?  I cannot find the answer in the K2/100 manual.  
Thanks!

73, Eric WD6DBM


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Re: [Elecraft] K2/100 Amp Keying Limits?

[Mike Cizek W0VTT]

Hello Eric,

It's in theKPA100 manual, at the back under Specifications:

DC relay coil pulled to ground
1A at 200 VDC  (do not use with AC-controlled relay)

P59 in my book, which I just noticed, comes right after p62.


73,
Mike Cizek W0VTT

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of eric norris via Elecraft
Sent: Tuesday, 16 March, 2021 21:11
To: Elecraft Reflector 
Subject: [Elecraft] K2/100 Amp Keying Limits?

Can anyone tell me what the external amplifier keying limits are for a K2/100?  
I'm trying to use an AL811H, which has 14.5V at 10ma on the relay jack.  Do I 
need an external interface?  I cannot find the answer in the K2/100 manual.  
Thanks!

73, Eric WD6DBM

  
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[Elecraft] K2/100 Amp Keying Limits?

[eric norris via Elecraft]

Can anyone tell me what the external amplifier keying limits are for a K2/100?  
I'm trying to use an AL811H, which has 14.5V at 10ma on the relay jack.  Do I 
need an external interface?  I cannot find the answer in the K2/100 manual.  
Thanks!

73, Eric WD6DBM

 
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Re: [Elecraft] K2/100 and KAT500/KPA500

[Don Wilhelm]

Tom,

You will have to use the KEYOUT from the K2/100.  The AUX cable will not 
work with the K2.


73,
Don W3FPR

On 11/4/2020 10:12 PM, cx...@4email.net wrote:

Question: How compatible is the K2/100 with KAT/KPA500? Is it possible
to connect K2/100 to both of these other units with the K3KPAAux cable
as if it's a K3(s)?

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[Elecraft] K2/100 and KAT500/KPA500

[cx7tt]

Question: How compatible is the K2/100 with KAT/KPA500? Is it possible
to connect K2/100 to both of these other units with the K3KPAAux cable
as if it's a K3(s)?

73
Tom
HP1XT

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Re: [Elecraft] K2/100 - Price reduced

[Tim Tucker]

Hi all,

W6KLE called me last night and asked me to let the group know that he has
reduced the price for the K2/100 package to $1400.

I have personally used this rig and it is pristine, as described.

Tim

On Wed, Oct 21, 2020 at 7:26 PM Tim Tucker  wrote:

> Listing this for a local ham W6KLE who is not on this list.  Contact info
> is below:
>
> --
> Selling my elecraft K2 100 watts with KAT 100
> 10/80 meters built in DSP all filters real time clock and more
> All manuals
> Works great built by W3FPR, I'm the original owner
> Very clean non smoking
> 1.600 shipping incl ships to the US lower 48 states only
> pacs...@gmail.com
>
>
> --
>


-- 
Owner, worldwidedx.com
AE6LX, Amateur Radio
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Re: [Elecraft] Elecraft K2/100 turn on issue

[W4RAM]

*PLEASE DISREGARD MY MESSAGE!!!
*
My apologies,

73!

Al
W4RAM



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[Elecraft] Elecraft K2/100 turn on issue

[W4RAM]

Good morning,

Looking for your advice:

When I connect the power cable to the KPA100 and also, power the radio
through the DC barrel jack, K2 does not turn on; if I remove the KPA100
power cable, the radio turn on as normal (then show "No PA PS").
I am using a Diamond GSV3000.

Thank you for any assistance.

Al
W4RAM



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Re: [Elecraft] K2/100

[Dean L]

k2/100 has found a new home-
Thanks 73
Dean

On Sun, May 10, 2020 at 9:52 PM Dean L  wrote:

> FS, K2/100, CW/ssb, DSP board, early Serial#,
> Works as it should, could use updates $625, PayPal F, $16 USPS.
>
>
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Re: [Elecraft] K2/100

[Dean L]

Oops I hit send meant to hit

73 all
Dean K2WW

On Sun, May 10, 2020, 21:52 Dean L  wrote:

> FS, K2/100, CW/ssb, DSP board, early Serial#,
> Works as it should, could use updates $625, PayPal F, $16 USPS.
>
>
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[Elecraft] F/S- Elecraft K2/100

[Rick A.]

I have for sale a pristine condition Elecraft K2-100 serial# 7646. This is my 
second
K2/100 rig and was meticulously built by me with the following options.
K2, KPA100, KNB2, KSB2, K60XV and K160RX. After completion the radio was
sent to Don Wilhelm, W3FPR for a check over and complete professional
calibration. I have all original paperwork, QRP cover and all cables
required. Does not come with a mic but is wired for Kenwood mic. I have
many photos from during the assembly so you can see the quality of the
build. Price is $1000.00 + shipping.

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Re: [Elecraft] K2/100 Power Measurements

[EricJ]

Guy goes into Home Depot to buy some wire.

"What size wire?"

'Uh, #14, I think."

"How long?"

"Uh...a long time. We're building a house."


Sorry.Eric KE6US


On 11/4/2019 9:05 PM, Jim Brown wrote:

On 11/4/2019 8:49 PM, Holger Doerschel wrote:

drops at 100 W / 28 MHz to 12.2 V.


What size wire? How long?

73, Jim K9YC
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Re: [Elecraft] K2/100 Power Measurements

[Jim Brown]

On 11/4/2019 8:49 PM, Holger Doerschel wrote:

drops at 100 W / 28 MHz to 12.2 V.


What size wire? How long?

73, Jim K9YC
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Re: [Elecraft] K2/100 Power Measurements

[Holger Doerschel]

Dear Don,


I read at the K2 13.6 V. It is a Powerwerx PS from Elecraft with the two 
Powerpole connectors at the front. The Voltage drops at 100 W / 28 MHz 
to 12.2 V. I already replaced D16. No change. I tried several PS.



73,

Holger DL9HDA


On 05.11.19 02:46, Don Wilhelm wrote:

Holger,

Is your power supply voltage at 13.8 volts or better yet 14.3 volts? 
That should be as measured by the voltage display on the K2.  It 
should not drop below 12.7 volts during a 100 watt transmit.


Part of the problem may be attributed to the voltage vs. frequency 
curve of KPA100 D16 - which should be a 1N5711 diode.  I have seen 
diodes that have become "flaky" with use, replacement with a new one 
is the only cure should that be the problem.


Other than limited voltage to the KPA100 or the response curve for 
D16, there is usually no other answer for the behavior you are seeing.


Remember that the power may vary by as much as 1 dB from band to band, 
and at the 100 watt level is about 20 watts, so you may not have any 
problem other than diode tolerance vs. frequency.


73,
Don W3FPR

On 11/4/2019 4:53 PM, Holger Doerschel wrote:

Hi,

after I finally installed the KAF2 module in my K2/100 05775, it was 
time to do a complete alignment and I ran into this old problem again.


The output power at 160 m is 100 W. And drops from band to band to 80 W.

Now I have adjusted the KPA100 to 10m. Now I have there 100 W but 
then on 160 m 120 W.


Measured with an LP-100A and dummy load. SWR is fine!



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Re: [Elecraft] K2/100 Power Measurements

[Don Wilhelm]

Holger,

Is your power supply voltage at 13.8 volts or better yet 14.3 volts? 
That should be as measured by the voltage display on the K2.  It should 
not drop below 12.7 volts during a 100 watt transmit.


Part of the problem may be attributed to the voltage vs. frequency curve 
of KPA100 D16 - which should be a 1N5711 diode.  I have seen diodes that 
have become "flaky" with use, replacement with a new one is the only 
cure should that be the problem.


Other than limited voltage to the KPA100 or the response curve for D16, 
there is usually no other answer for the behavior you are seeing.


Remember that the power may vary by as much as 1 dB from band to band, 
and at the 100 watt level is about 20 watts, so you may not have any 
problem other than diode tolerance vs. frequency.


73,
Don W3FPR

On 11/4/2019 4:53 PM, Holger Doerschel wrote:

Hi,

after I finally installed the KAF2 module in my K2/100 05775, it was 
time to do a complete alignment and I ran into this old problem again.


The output power at 160 m is 100 W. And drops from band to band to 80 W.

Now I have adjusted the KPA100 to 10m. Now I have there 100 W but then 
on 160 m 120 W.


Measured with an LP-100A and dummy load. SWR is fine!


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[Elecraft] K2/100 Power Measurements

[Holger Doerschel]

Hi,

after I finally installed the KAF2 module in my K2/100 05775, it was 
time to do a complete alignment and I ran into this old problem again.


The output power at 160 m is 100 W. And drops from band to band to 80 W.

Now I have adjusted the KPA100 to 10m. Now I have there 100 W but then 
on 160 m 120 W.


Measured with an LP-100A and dummy load. SWR is fine!

It looks as if the whole power measurement shows a certain skewness.

Any hint?

73s, Holger DL9HDA

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Re: [Elecraft] F/S - Elecraft K2/100 (REDUCED)

[Rick A.]

I have for sale a pristine condition Elecraft K2-100. This is my second
K2/100 rig and was meticulously built by me with the following options.
K2, KPA100, KNB2, KSB2, K60XV and K160RX. After completion the radio was
sent to Don Wilhelm, W3FPR for a check over and complete professional
calibration. I have all original paperwork, QRP cover and all cables
required. Does not come with a mic but is wired for Kenwood mic. I have
many photos from during the assembly so you can see the quality of the
build. Price is $1000.00 + shipping.

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[Elecraft] F/S - Elecraft K2/100

[Rick A.]

I have for sale a pristine condition Elecraft K2-100. This is my second 
K2/100 rig and was meticulously built by me with the following options. 
K2, KPA100, KNB2, KSB2, K60XV and K160RX. After completion the radio was 
sent to Don Wilhelm, W3FPR for a check over and complete professional 
calibration. I have all original paperwork, QRP cover and all cables 
required. Does not come with a mic but is wired for Kenwood mic. I have 
many photos from during the assembly so you can see the quality of the 
build. Price is $1200.00 + shipping.


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[Elecraft] K2/100 Sale cancelled

[Derek Brook]

Sorry about this! I got it out and set it up to check it out before selling
it and found it has a problem.
*SALE CANCELLED!!*

*Thank you*
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[Elecraft] For sale Elecraft K2/100

[Derek Brook]

It is setup as twins, radio in one case & amp & tuner in another.
KPA100-AMP, KAT100-1-Tuner, KSB2-SSB, KHB2-Noise Blanker, K160RX
& MH4-Mic.
Asking $850 shipped or Exchange for KX3?
Contact via Email  1...@stny.rr.com
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[Elecraft] K2/100 for sale again!

[Derek Brook]

I have a nice K2/100, it is setup as the twins with the amp and tuner in
the EC2 case.It is packed and ready to go,who ever buys it.
This is for sale as is with no returns, because of parts swapping.
$1050 I will pay for shipping.

Derek/KD3GZ
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Re: [Elecraft] K2 100 Tuner question

[Gary]

You don't need the drawings. If someone would scan the existing case and share 
the scans it is simple to print.

I don't know what kind of copyright and/or patent issues that creates.

73,
Joe kk0sd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Neil Zampella
Sent: Sunday, December 23, 2018 7:45 PM
To: Elecraft Reflector 
Subject: Re: [Elecraft] K2 100 Tuner question

You know, the point is moot.   I would assume that Wayne & Eric looked at 
getting a replacement vendor, but then after getting bids based on the sales 
history of the EC2, they determined that it would not be feasible at the price 
point they wanted to sell them at.

Now, it would be great if they could release a PDF of the engineering drawings 
of the EC2, so that those who wanted to create a KAT100-2 could still do that.

Neil, KN3iLZ

On 12/22/2018 11:42 PM, Josh Fiden wrote:
> To the original point, there is no difficulty finding a different vendor, 
> there are no tooling costs, and producing parts in small quantity is not cost 
> prohibitive.
>
> Some people need to be right. Others want the right answer. Only the latter 
> is of interest.
>
> Enough said.
>
> 73,
> Josh W6XU
>
> Sent from my mobile device
>
>> On Dec 22, 2018, at 8:11 PM, Don Wilhelm  wrote:
>>
>> Well, if you spread $5K over a projected sales quantity of 100 (there were 
>> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
>> enclosure.
>> Add to that the cost of administrative support, creating web pages, packing 
>> and shipping labor, and you have an EC2 enclosure that has to sell for over 
>> $150 to produce any profit.  About double the original customer cost of the 
>> EC2.
>>
>> It is different if you can project selling thousands of the items.
>> Enough said.
>>
>> 73,
>> Don W3FPR
>>
>>> On 12/22/2018 10:38 PM, W2xj wrote:
>>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>>> basis. That is where the auto industry is going.
>>>
>>> Sent from my iPhone
>>>
>>>> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
>>>>
>>>> Josh,
>>>>
>>>> I may not be up to speed, but there are startup costs for anything.  Those 
>>>> costs have to be added to the product cost and for small volumes, it can 
>>>> be prohibited.
>>>> Entering a CAD file, getting scheduling from a small shop that may have a 
>>>> full schedule already can be costly.
>>>>
>>>> 73,
>>>> Don W3FPR
>>>>
>>>>> On 12/22/2018 9:16 PM, Josh Fiden wrote:
>>>>> Hi Don,
>>>>>
>>>>> Sounds like you're not up to speed on 21st century sheet metal 
>>>>> fabrication.
>>>>>
>>>>> Small volume parts like this would be cut on a laser and bent with a CNC 
>>>>> press brake. The only setup is loading the programs and there is no 
>>>>> tooling. If someone draws the parts using a CAD program like Solid Edge, 
>>>>> the resulting 3D models can be utilized directly by the vendor. Even 
>>>>> small job shops have laser cutting ability, especially for small gauge 
>>>>> material like this.
>>>>>
>>>>>
>

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Re: [Elecraft] K2 100 Tuner question

[Grant Youngman]

i tend to think you’re right.  If Elecraft has determined that it isn’t 
economical for them to continue to produce the EC2, then perhaps we shouldn’t 
be giving side eye about what it costs to laser cut a piece of metal at even a 
mom and pot shop.  Sure .. maybe that’s cheap, but there’s a good deal more 
that goes into producing an actual market-ready finished product.  I could list 
quite a few additional steps besides metal cutting … but that wouldn’t prove 
much.  Any more that arguing that laser cutting metal  is cheap … unless you’d 
like to have raw laser cut metal as a cabinet for a radio … 


K3 #2091 KX3 #8342

> On Dec 23, 2018, at 8:45 PM, Neil Zampella  wrote:
> 
> You know, the point is moot.   I would assume that Wayne & Eric looked at 
> getting a replacement vendor, but then after getting bids based on the sales 
> history of the EC2, they determined that it would not be feasible at the 
> price point they wanted to sell them at.
> 

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Re: [Elecraft] K2 100 Tuner question

[Neil Zampella]

You know, the point is moot.   I would assume that Wayne & Eric looked 
at getting a replacement vendor, but then after getting bids based on 
the sales history of the EC2, they determined that it would not be 
feasible at the price point they wanted to sell them at.


Now, it would be great if they could release a PDF of the engineering 
drawings of the EC2, so that those who wanted to create a KAT100-2 could 
still do that.


Neil, KN3iLZ

On 12/22/2018 11:42 PM, Josh Fiden wrote:

To the original point, there is no difficulty finding a different vendor, there 
are no tooling costs, and producing parts in small quantity is not cost 
prohibitive.

Some people need to be right. Others want the right answer. Only the latter is 
of interest.

Enough said.

73,
Josh W6XU

Sent from my mobile device


On Dec 22, 2018, at 8:11 PM, Don Wilhelm  wrote:

Well, if you spread $5K over a projected sales quantity of 100 (there were not 
of EC2 enclosures sold), then you have a tooling cost of $50 per enclosure.
Add to that the cost of administrative support, creating web pages, packing and 
shipping labor, and you have an EC2 enclosure that has to sell for over $150 to 
produce any profit.  About double the original customer cost of the EC2.

It is different if you can project selling thousands of the items.
Enough said.

73,
Don W3FPR


On 12/22/2018 10:38 PM, W2xj wrote:
You can buy a 3D printer for under $5K and make metal work on an as needed 
basis. That is where the auto industry is going.

Sent from my iPhone


On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:

Josh,

I may not be up to speed, but there are startup costs for anything.  Those 
costs have to be added to the product cost and for small volumes, it can be 
prohibited.
Entering a CAD file, getting scheduling from a small shop that may have a full 
schedule already can be costly.

73,
Don W3FPR


On 12/22/2018 9:16 PM, Josh Fiden wrote:
Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication.

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this.






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Re: [Elecraft] K2 100 Tuner question

[Bill Frantz]

My conversations with a senior manager for a company that makes 
components for auto manufacturers is that, while 3D printing is 
widely used for small runs of prototypes, traditional tooling 
still rules for production.



In answer to Ed, KL7UW's comments about his amp, I'm quite 
satisfied with mine. I didn't notice any real problems with the 
holes in chassis.


73 Bill AE6JV

On 12/22/18 at 7:38 PM, w...@w2xj.net (W2xj) wrote:

You can buy a 3D printer for under $5K and make metal work on 
an as needed basis. That is where the auto industry is going.


On 12/23/18 at 8:00 AM, kl...@acsalaska.net (Edward R Cole) wrote:

So I chose a good quality commercial chassis from Hammond and 
built an aluminum jig to hold it in a vise for drilling.  
Square holes required hand filing.  Stick-on labeling.  I used 
a pcb made by a reputable small production house (W6PQL).  
Those that bought the 80w 2m amp got a pretty good product but 
no confusion that it was hand made.  Costs were hard to get 
competitive with commercial amp mfrs but I think the 
reliability might have been better.


You would have to survey my customers who all read this list 
and most have Elecraft radios that were used with the amp 
(majority had the KX3-2M).

---
Bill Frantz| I don't have high-speed  | Periwinkle
(408)356-8506  | internet. I have DSL.| 16345 
Englewood Ave
www.pwpconsult.com |  | Los Gatos, 
CA 95032


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Re: [Elecraft] K2 100 Tuner question

[hawley, charles j jr]

I’m actually having difficulty imagining using a 3D printer to make a good 
looking smooth sheet metal cabinet.
Examples?

Chuck
KE9UW

Sent from my iPhone, cjack 

> On Dec 22, 2018, at 10:24 PM, W2xj  wrote:
> 
> Well no. That $5k could be spread over all the metalwork and greatly reduce 
> inventory. 
> 
> Sent from my iPhone
> 
>> On Dec 22, 2018, at 20:11, Don Wilhelm  wrote:
>> 
>> Well, if you spread $5K over a projected sales quantity of 100 (there were 
>> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
>> enclosure.
>> Add to that the cost of administrative support, creating web pages, packing 
>> and shipping labor, and you have an EC2 enclosure that has to sell for over 
>> $150 to produce any profit.  About double the original customer cost of the 
>> EC2.
>> 
>> It is different if you can project selling thousands of the items.
>> Enough said.
>> 
>> 73,
>> Don W3FPR
>> 
>>> On 12/22/2018 10:38 PM, W2xj wrote:
>>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>>> basis. That is where the auto industry is going.
>>> 
>>> Sent from my iPhone
>>> 
 On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
 
 Josh,
 
 I may not be up to speed, but there are startup costs for anything.  Those 
 costs have to be added to the product cost and for small volumes, it can 
 be prohibited.
 Entering a CAD file, getting scheduling from a small shop that may have a 
 full schedule already can be costly.
 
 73,
 Don W3FPR
 
> On 12/22/2018 9:16 PM, Josh Fiden wrote:
> Hi Don,
> 
> Sounds like you're not up to speed on 21st century sheet metal 
> fabrication.
> 
> Small volume parts like this would be cut on a laser and bent with a CNC 
> press brake. The only setup is loading the programs and there is no 
> tooling. If someone draws the parts using a CAD program like Solid Edge, 
> the resulting 3D models can be utilized directly by the vendor. Even 
> small job shops have laser cutting ability, especially for small gauge 
> material like this.
> 
> 
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>>> 
>> 
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Re: [Elecraft] K2 100 Tuner question

[W2xj]

You are distorting this way out of proportion. While you may be describing the 
20th century method for large scale manufacturing, it has little to do with 
today’s technology. To begin with, Elecraft is a small low volume operation. I 
doubt they go through all the processes you describe. In any event the 
discussion began being about a relatively small case that was low volume in the 
first place. They could put the existing drawings on line and let the ham 
community take it from there. 

On a vastly larger scale, the auto industry is moving towards 3D printing parts 
on site and cutting out all those middle men (along with import and tariff 
hassles).

Sent from my iPad

> On Dec 23, 2018, at 8:44 AM, Don Wilhelm  wrote:
> 
> "after initial design", and "one off run" is key here.
> 
> When you are a doing it as a hobby, you may not count the cost of that design 
> element.  For a manufacturer, it means a lot more that getting a part 
> in-hand.  Engineering prototypes are one thing, getting a product out for 
> production sales is entirely a different matter.
> 
> If you are a manufacturer, there is a big difference.  You have to count the 
> cost of Engineering Change Orders, vendor negotiations, re-designs to meet 
> the requirements of the particular vendor you are dealing with, and finally 
> creating a Bill of Materials and stocking and inventorying the product, and 
> creating sales data (even if it is a re-vamped product).
> In other words, all the relevant pieces of your organization have to have the 
> information needed to work in lockstep with each other.
> And most of that effort is in-house and takes up much of the staff resources.
> 
> A one or 2 person shop can do it more quickly and easily, but in a 
> manufacturing evironment, all the "T"s must be crossed and the "i"s dotted if 
> you are going to succeed with a product that is only a small piece of your 
> product line.
> 
> 73,
> Don W3FPR
> 
>> On 12/23/2018 11:19 AM, W2xj wrote:
>> Times have changed. 3D printing permits one off runs with little effort 
>> after the initial design.
>> Sent from my iPad
>>> On Dec 23, 2018, at 8:00 AM, Edward R Cole  wrote:
>>> 
>>> Have to agree, in principle, with Don.
>>> 
>>> Many of you may never had done a small volume production.  I have.
>>> I cannot afford to purchase CNC tooling, metal brakes, etc. for a project 
>>> of twelve copies.  Vendors are all out of state with added shipping costs.
>>> 
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Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

"after initial design", and "one off run" is key here.

When you are a doing it as a hobby, you may not count the cost of that 
design element.  For a manufacturer, it means a lot more that getting a 
part in-hand.  Engineering prototypes are one thing, getting a product 
out for production sales is entirely a different matter.


If you are a manufacturer, there is a big difference.  You have to count 
the cost of Engineering Change Orders, vendor negotiations, re-designs 
to meet the requirements of the particular vendor you are dealing with, 
and finally creating a Bill of Materials and stocking and inventorying 
the product, and creating sales data (even if it is a re-vamped product).
In other words, all the relevant pieces of your organization have to 
have the information needed to work in lockstep with each other.
And most of that effort is in-house and takes up much of the staff 
resources.


A one or 2 person shop can do it more quickly and easily, but in a 
manufacturing evironment, all the "T"s must be crossed and the "i"s 
dotted if you are going to succeed with a product that is only a small 
piece of your product line.


73,
Don W3FPR

On 12/23/2018 11:19 AM, W2xj wrote:

Times have changed. 3D printing permits one off runs with little effort after 
the initial design.

Sent from my iPad


On Dec 23, 2018, at 8:00 AM, Edward R Cole  wrote:

Have to agree, in principle, with Don.

Many of you may never had done a small volume production.  I have.
I cannot afford to purchase CNC tooling, metal brakes, etc. for a project of 
twelve copies.  Vendors are all out of state with added shipping costs.


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Re: [Elecraft] K2 100 Tuner question

[W2xj]

Times have changed. 3D printing permits one off runs with little effort after 
the initial design.  

Sent from my iPad

> On Dec 23, 2018, at 8:00 AM, Edward R Cole  wrote:
> 
> Have to agree, in principle, with Don.
> 
> Many of you may never had done a small volume production.  I have.
> I cannot afford to purchase CNC tooling, metal brakes, etc. for a project of 
> twelve copies.  Vendors are all out of state with added shipping costs.
> 
> So I chose a good quality commercial chassis from Hammond and built an 
> aluminum jig to hold it in a vise for drilling.  Square holes required hand 
> filing.  Stick-on labeling.  I used a pcb made by a reputable small 
> production house (W6PQL).  Those that bought the 80w 2m amp got a pretty good 
> product but no confusion that it was hand made.  Costs were hard to get 
> competitive with commercial amp mfrs but I think the reliability might have 
> been better.
> 
> You would have to survey my customers who all read this list and most have 
> Elecraft radios that were used with the amp (majority had the KX3-2M).
> 
> I had an opportunity to buy out a popular line of transverters and recently a 
> popular preamp maker.  Cost/labor time were decisive against them (mostly at 
> my age).  Had a hard time convincing my self that working for under $10/hour 
> was a good deal.  Each amp took about 18 hours each  and my net was under 
> $100.  So I considered it learning experience and labor of "love".
> 
> In manufacturing there is a concept called "economy of scale" which Wayne and 
> Eric are probably very conversant.
> 
> 73, Ed - KL7UW
>  http://www.kl7uw.com
> Dubus-NA Business mail:
>  dubus...@gmail.com 
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Re: [Elecraft] K2 100 Tuner question

[Edward R Cole]

Have to agree, in principle, with Don.

Many of you may never had done a small volume production.  I have.
I cannot afford to purchase CNC tooling, metal brakes, etc. for a 
project of twelve copies.  Vendors are all out of state with added 
shipping costs.


So I chose a good quality commercial chassis from Hammond and built 
an aluminum jig to hold it in a vise for drilling.  Square holes 
required hand filing.  Stick-on labeling.  I used a pcb made by a 
reputable small production house (W6PQL).  Those that bought the 80w 
2m amp got a pretty good product but no confusion that it was hand 
made.  Costs were hard to get competitive with commercial amp mfrs 
but I think the reliability might have been better.


You would have to survey my customers who all read this list and most 
have Elecraft radios that were used with the amp (majority had the KX3-2M).


I had an opportunity to buy out a popular line of transverters and 
recently a popular preamp maker.  Cost/labor time were decisive 
against them (mostly at my age).  Had a hard time convincing my self 
that working for under $10/hour was a good deal.  Each amp took about 
18 hours each  and my net was under $100.  So I considered it 
learning experience and labor of "love".


In manufacturing there is a concept called "economy of scale" which 
Wayne and Eric are probably very conversant.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

To the original point, there is no difficulty finding a different vendor, there 
are no tooling costs, and producing parts in small quantity is not cost 
prohibitive. 

Some people need to be right. Others want the right answer. Only the latter is 
of interest. 

Enough said. 

73,
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 8:11 PM, Don Wilhelm  wrote:
> 
> Well, if you spread $5K over a projected sales quantity of 100 (there were 
> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
> enclosure.
> Add to that the cost of administrative support, creating web pages, packing 
> and shipping labor, and you have an EC2 enclosure that has to sell for over 
> $150 to produce any profit.  About double the original customer cost of the 
> EC2.
> 
> It is different if you can project selling thousands of the items.
> Enough said.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 10:38 PM, W2xj wrote:
>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>> basis. That is where the auto industry is going.
>> 
>> Sent from my iPhone
>> 
>>> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
>>> 
>>> Josh,
>>> 
>>> I may not be up to speed, but there are startup costs for anything.  Those 
>>> costs have to be added to the product cost and for small volumes, it can be 
>>> prohibited.
>>> Entering a CAD file, getting scheduling from a small shop that may have a 
>>> full schedule already can be costly.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
 On 12/22/2018 9:16 PM, Josh Fiden wrote:
 Hi Don,
 
 Sounds like you're not up to speed on 21st century sheet metal fabrication.
 
 Small volume parts like this would be cut on a laser and bent with a CNC 
 press brake. The only setup is loading the programs and there is no 
 tooling. If someone draws the parts using a CAD program like Solid Edge, 
 the resulting 3D models can be utilized directly by the vendor. Even small 
 job shops have laser cutting ability, especially for small gauge material 
 like this.
 
 

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Re: [Elecraft] K2 100 Tuner question

[W2xj]

Well no. That $5k could be spread over all the metalwork and greatly reduce 
inventory. 

Sent from my iPhone

> On Dec 22, 2018, at 20:11, Don Wilhelm  wrote:
> 
> Well, if you spread $5K over a projected sales quantity of 100 (there were 
> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
> enclosure.
> Add to that the cost of administrative support, creating web pages, packing 
> and shipping labor, and you have an EC2 enclosure that has to sell for over 
> $150 to produce any profit.  About double the original customer cost of the 
> EC2.
> 
> It is different if you can project selling thousands of the items.
> Enough said.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 10:38 PM, W2xj wrote:
>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>> basis. That is where the auto industry is going.
>> 
>> Sent from my iPhone
>> 
>>> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
>>> 
>>> Josh,
>>> 
>>> I may not be up to speed, but there are startup costs for anything.  Those 
>>> costs have to be added to the product cost and for small volumes, it can be 
>>> prohibited.
>>> Entering a CAD file, getting scheduling from a small shop that may have a 
>>> full schedule already can be costly.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
 On 12/22/2018 9:16 PM, Josh Fiden wrote:
 Hi Don,
 
 Sounds like you're not up to speed on 21st century sheet metal fabrication.
 
 Small volume parts like this would be cut on a laser and bent with a CNC 
 press brake. The only setup is loading the programs and there is no 
 tooling. If someone draws the parts using a CAD program like Solid Edge, 
 the resulting 3D models can be utilized directly by the vendor. Even small 
 job shops have laser cutting ability, especially for small gauge material 
 like this.
 
 
>>> __
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>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to w...@w2xj.net
>> 
> 
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Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Well, if you spread $5K over a projected sales quantity of 100 (there 
were not of EC2 enclosures sold), then you have a tooling cost of $50 
per enclosure.
Add to that the cost of administrative support, creating web pages, 
packing and shipping labor, and you have an EC2 enclosure that has to 
sell for over $150 to produce any profit.  About double the original 
customer cost of the EC2.


It is different if you can project selling thousands of the items.
Enough said.

73,
Don W3FPR

On 12/22/2018 10:38 PM, W2xj wrote:

You can buy a 3D printer for under $5K and make metal work on an as needed 
basis. That is where the auto industry is going.

Sent from my iPhone


On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:

Josh,

I may not be up to speed, but there are startup costs for anything.  Those 
costs have to be added to the product cost and for small volumes, it can be 
prohibited.
Entering a CAD file, getting scheduling from a small shop that may have a full 
schedule already can be costly.

73,
Don W3FPR


On 12/22/2018 9:16 PM, Josh Fiden wrote:
Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication.

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this.



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Re: [Elecraft] K2 100 Tuner question

[W2xj]

You can buy a 3D printer for under $5K and make metal work on an as needed 
basis. That is where the auto industry is going. 

Sent from my iPhone

> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
> 
> Josh,
> 
> I may not be up to speed, but there are startup costs for anything.  Those 
> costs have to be added to the product cost and for small volumes, it can be 
> prohibited.
> Entering a CAD file, getting scheduling from a small shop that may have a 
> full schedule already can be costly.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 9:16 PM, Josh Fiden wrote:
>> Hi Don,
>> 
>> Sounds like you're not up to speed on 21st century sheet metal fabrication.
>> 
>> Small volume parts like this would be cut on a laser and bent with a CNC 
>> press brake. The only setup is loading the programs and there is no tooling. 
>> If someone draws the parts using a CAD program like Solid Edge, the 
>> resulting 3D models can be utilized directly by the vendor. Even small job 
>> shops have laser cutting ability, especially for small gauge material like 
>> this.
>> 
>> 
> 
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Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

Oh come on. Now you're just making things up. 

I just had some structural brackets made. They had 18 holes, laser cut and bent 
from 3/8" thick 304 stainless. They were $45 ea for 13 pcs. Supplier did the 
CAD for me from my pencil sketch. Took him less than 10 minutes, no extra 
charge. 

A little difficult to extrapolate from that example, other than to note the 
very low volume, it's expensive material and slow to cut. 

73
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 7:03 PM, Don Wilhelm  wrote:
> 
> Josh,
> 
> I may not be up to speed, but there are startup costs for anything.  Those 
> costs have to be added to the product cost and for small volumes, it can be 
> prohibited.
> Entering a CAD file, getting scheduling from a small shop that may have a 
> full schedule already can be costly.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 9:16 PM, Josh Fiden wrote:
>> Hi Don,
>> 
>> Sounds like you're not up to speed on 21st century sheet metal fabrication.
>> 
>> Small volume parts like this would be cut on a laser and bent with a CNC 
>> press brake. The only setup is loading the programs and there is no tooling. 
>> If someone draws the parts using a CAD program like Solid Edge, the 
>> resulting 3D models can be utilized directly by the vendor. Even small job 
>> shops have laser cutting ability, especially for small gauge material like 
>> this.
>> 
>> 
> 

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Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Josh,

I may not be up to speed, but there are startup costs for anything.  
Those costs have to be added to the product cost and for small volumes, 
it can be prohibited.
Entering a CAD file, getting scheduling from a small shop that may have 
a full schedule already can be costly.


73,
Don W3FPR

On 12/22/2018 9:16 PM, Josh Fiden wrote:

Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication.

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this.




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Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication. 

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this. 

Hard tooling would only be used in high volume (thousands at least) for a very 
cost sensitive project. 

I'm not familiar with methods prior to the '80s, but even back then this would 
be done on a turret punch press. You'd only need tools for oddball shapes the 
vendor didn't have, and those are fairly inexpensive. For small runs you'd have 
the setup time of loading tools into the turret, but as noted, that no longer 
exists. 

73,
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 5:15 PM, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> 

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Re: [Elecraft] K2 100 Tuner question

[Gary]

Or if someone would publish the files required for 3D printing...

Then the builder can opt print his own or not. The costs are shifted to a 
spread out model.  Finding someone to print something for a reasonable fee is 
becoming relatively easy.

Just Thinking Out Loud, 73,
Joe kk0sd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of W2xj
Sent: Saturday, December 22, 2018 7:51 PM
To: donw...@embarqmail.com
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K2 100 Tuner question

I wonder if 3D printing would be cost effective. 

Sent from my iPhone

> On Dec 22, 2018, at 17:15, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> Sent from my mobile device
>>> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
>>> 
>>> All,
>>> 
>>> Once again, the EC2 was discontinued because the metal supplier is no 
>>> longer in business.
>>> To find another vendor is out of the question.  The startup and tooling 
>>> costs would be excessively high for the projected quantities involved.
>>> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
>>> per unit (my guess, not anything official from Elecraft)?
>>> It was not a high sales volume unit where such startup and tooling costs 
>>> could be swamped out by the sales volumes.
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Re: [Elecraft] K2 100 Tuner question

[W2xj]

I wonder if 3D printing would be cost effective. 

Sent from my iPhone

> On Dec 22, 2018, at 17:15, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> Sent from my mobile device
>>> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
>>> 
>>> All,
>>> 
>>> Once again, the EC2 was discontinued because the metal supplier is no 
>>> longer in business.
>>> To find another vendor is out of the question.  The startup and tooling 
>>> costs would be excessively high for the projected quantities involved.
>>> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
>>> per unit (my guess, not anything official from Elecraft)?
>>> It was not a high sales volume unit where such startup and tooling costs 
>>> could be swamped out by the sales volumes.
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Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Josh,

The stuff needed to punch the panels out of a piece of aluminum and put 
the holes in the right place.  The tools needed to bend the panels at 
the right places.  That stuff can cost thousands of dollars.

It is not the same as making a one-off copy using hand marked pieces.

If you have ever studied what it takes to make production quantities of 
a device, then you would understand that it takes specialized tools that 
can be quite costly.


In my small custom woodworking shop we usually went the inexpensive way 
by making jigs and other pattern tools, but doing even that costs money.


73,
Don W3FPR

On 12/22/2018 7:35 PM, Josh Fiden wrote:

What tooling?

73
Josh W6XU

Sent from my mobile device


On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:

All,

Once again, the EC2 was discontinued because the metal supplier is no longer in 
business.
To find another vendor is out of the question.  The startup and tooling costs 
would be excessively high for the projected quantities involved.
How many EC2 enclosure could Elecraft sell at a price point of $250 or more per 
unit (my guess, not anything official from Elecraft)?
It was not a high sales volume unit where such startup and tooling costs could 
be swamped out by the sales volumes.

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Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

What tooling?

73
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
> 
> All,
> 
> Once again, the EC2 was discontinued because the metal supplier is no longer 
> in business.
> To find another vendor is out of the question.  The startup and tooling costs 
> would be excessively high for the projected quantities involved.
> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
> per unit (my guess, not anything official from Elecraft)?
> It was not a high sales volume unit where such startup and tooling costs 
> could be swamped out by the sales volumes.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 4:44 PM, Doug Person wrote:
>>> On 12/22/2018 2:30 PM, Rick Wheeler wrote:
>>> I always wondered why Elecraft discontinued the EC2 enclosure. Even the mod 
>>> to use the EC2 enclosure with the 100 watt amp and tuner was unofficial as 
>>> I understood. I built the 100 amp and tuner in the EC2 as per the 
>>> instructions to mate with the K2. Maybe the demand was not there but neat 
>>> setup and works great!
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Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

All,

Once again, the EC2 was discontinued because the metal supplier is no 
longer in business.
To find another vendor is out of the question.  The startup and tooling 
costs would be excessively high for the projected quantities involved.
How many EC2 enclosure could Elecraft sell at a price point of $250 or 
more per unit (my guess, not anything official from Elecraft)?
It was not a high sales volume unit where such startup and tooling costs 
could be swamped out by the sales volumes.


73,
Don W3FPR

On 12/22/2018 4:44 PM, Doug Person wrote:


On 12/22/2018 2:30 PM, Rick Wheeler wrote:
I always wondered why Elecraft discontinued the EC2 enclosure. Even 
the mod to use the EC2 enclosure with the 100 watt amp and tuner was 
unofficial as I understood. I built the 100 amp and tuner in the EC2 
as per the instructions to mate with the K2. Maybe the demand was not 
there but neat setup and works great!

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