Elecraft

K3 if isolation of softrock lite used as panadapter

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stephen pearce

K3 if isolation of softrock lite used as panadapter

A month or so ago one of the Elecraft engineers pointed out that
if the softrock lite rx is connected directly to the if port on the k3
there was a significant issue with coupling of rf from the softrock
board into the
rx if of the k# with consequent degradation in rx performance ...

Has anyone produced a design for a suitable isolation amplifier/
coupling stage which will
prevent this and still allow the softrock to be used (in conjunction
with a pc) as a panadapter?

Thanks

--
Stephen Pearce
zl1any
Whangarei
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rkayakr

Re: K3 if isolation of softrock lite used as panadapter

Stephen

Please comment by Jack Smith K8ZOA on Z10000 interface in topic "K3 SSB Strange Behavior".

Bob
KD8CGH

Jack Smith-6

Re: K3 if isolation of softrock lite used as panadapter

Thanks - the post was actually captioned 2nd Run on Z10000 Buffer
Amplifier.

For the K3, the universal model of the Z10000 would be usable and will
provide around 70 dB isolation, which, when combined with the isolation
in the K3's internal source follower IF buffer pick-off amplifier should
be enough to let a Softrock receiver work without interference to the K3.

I've delayed receipt of my K3 until the 2nd receiver issues are sorted
out, so I can't run tests, but based on the numbers involved (Softrock
local oscillator output around -40 dBm if my memory is correct) the
Z10000 and K3 internal isolation in tandem should be adequate.

A related issue is whether it is necessary/desirable to interpose a
bandpass filter between the K3's IF output and the Softrock receiver
input. There's a lot of stuff that comes out the K3's IF output port,
signals from internal oscillators, etc. I don't have an opinion on
whether a 300 or 400 KHz wide bandpass filter will be necessary or not.
Again, that requires some measurements that I can not perform until my
K3 arrives. Since the Softrock works with an antenna connected to it, I
suspect that additional filtering won't be required, but it would be
nice to verify my suspiscion.

I also have a connectorized version of the buffer amplifier, but had not
decided whether to make it available or not. I use them around my shop
when I need extra amplification for a particular project.

Jack K8ZOA

rkayakr wrote:
> Stephen
>
> Please comment by Jack Smith K8ZOA on Z10000 interface in topic "K3 SSB
> Strange Behavior".
>
> Bob
> KD8CGH
>
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Jerry Flanders

Re: K3 if isolation of softrock lite used as panadapter

In reply to this post by stephen pearce

I assume a simple MMIC amp plus a simple resistive attenuator circuit
will provide enough isolation and also provide for matching levels
up/down as may be necessary. At least, that will be my first cut at
the problem unless somebody else comes up with a better plan before
my K3 arrives.

At down east microwave ( http://www.downeastmicrowave.com/cat-frame.htm ),
see the
<http://literature.agilent.com/litweb/pdf/5967-6159E.pdf>INA10386
(DC-2GHz, 24dBG, 3.5dB NF +14dbm 1dB Gain compression ) for only $5.
Very easy to use something like this, I think.

Depending on the signal level of the K3 IF output, we might get
enough isolation from a resistive attenuator alone and still have a
usable signal level on the softrock panadaptor.

I would much prefer a plug and play manufactured solution if it takes
more than an attenuator, but not an expensive one.

Jerry W4UK

At 07:29 PM 2/11/2008, stephen pearce wrote:

>A month or so ago one of the Elecraft engineers pointed out that
>if the softrock lite rx is connected directly to the if port on the k3
>there was a significant issue with coupling of rf from the softrock
>board into the
>rx if of the k# with consequent degradation in rx performance ...
>
>Has anyone produced a design for a suitable isolation amplifier/
>coupling stage which will
>prevent this and still allow the softrock to be used (in conjunction
>with a pc) as a panadapter?
>
>Thanks
>
>
>--
>Stephen Pearce
>zl1any
>Whangarei
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Jack Smith-6

Re: K3 if isolation of softrock lite used as panadapter

Jerry:

You might first wish to measure the reverse isolation of a MMIC before
you make that statement. While they are great devices, isolation is not
their strong suit.

The Gali74, which I use for a variety of purposes, has an isolation of
around 28 dB at the K2's IF frequency. The gain is 25 dB, so if you pad
the output for unity gain, you are around 53 dB. With a Softrock's
typical -40 dBm LO leakage, that strikes me a bit on the marginal side.

Jack K8ZOA

Jerry Flanders wrote:

> I assume a simple MMIC amp plus a simple resistive attenuator circuit
> will provide enough isolation and also provide for matching levels
> up/down as may be necessary. At least, that will be my first cut at
> the problem unless somebody else comes up with a better plan before my
> K3 arrives.
>
> At down east microwave (
> http://www.downeastmicrowave.com/cat-frame.htm ),
> see the
> <http://literature.agilent.com/litweb/pdf/5967-6159E.pdf>INA10386
> (DC-2GHz, 24dBG, 3.5dB NF +14dbm 1dB Gain compression ) for only $5.
> Very easy to use something like this, I think.
>
> Depending on the signal level of the K3 IF output, we might get enough
> isolation from a resistive attenuator alone and still have a usable
> signal level on the softrock panadaptor.
>
> I would much prefer a plug and play manufactured solution if it takes
> more than an attenuator, but not an expensive one.
>
> Jerry W4UK
>
>
> At 07:29 PM 2/11/2008, stephen pearce wrote:
>> A month or so ago one of the Elecraft engineers pointed out that
>> if the softrock lite rx is connected directly to the if port on the k3
>> there was a significant issue with coupling of rf from the softrock
>> board into the
>> rx if of the k# with consequent degradation in rx performance ...
>>
>> Has anyone produced a design for a suitable isolation amplifier/
>> coupling stage which will
>> prevent this and still allow the softrock to be used (in conjunction
>> with a pc) as a panadapter?
>>
>> Thanks
>>
>>
>> --
>> Stephen Pearce
>> zl1any
>> Whangarei
>> _______________________________________________
>> Elecraft mailing list
>> Post to: [hidden email]
>> You must be a subscriber to post to the list.
>> Subscriber Info (Addr. Change, sub, unsub etc.):
>> http://mailman.qth.net/mailman/listinfo/elecraft
>>
>> Help: http://mailman.qth.net/subscribers.htm
>> Elecraft web page: http://www.elecraft.com
>
> _______________________________________________
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>

Dave Martin-2

Re: K3 if isolation of softrock lite used as panadapter

The Softrock receiver I received came with a common 32768 crystal,
giving a LO of 8192, far out of the passband of the roofing filter. I
wonder if that won't help a bit.

Dave W5DHM
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N8LP

Re: K3 if isolation of softrock lite used as panadapter

In reply to this post by stephen pearce

I have not found that to be the case. I tried a number of MMICs and
found them lacking in the kind of reverse isolation needed for this job.

I use the same device in my LP-PAN panadapter as K8ZOA uses in his
Z10000 buffer. I am seeing >100dB isolation of the LO signal from my
panadapter, which uses a mixer that is roughly similar to the SoftRock.
Since my IF is at 8215 kHz, any LO leakage would be seen at the center
of the panadapter display. In my case, the leakage signal is below the
noise floor. With a SoftRock, the leakage signal would appear 23 kHz
away from the K3 IF.

I wouldn't use a SoftRock without a buffer, and if I did, I would sure
make sure it was disabled during xmit. For reference, I measured LO
leakage of a SoftRock on the order of -40dBm, which translates to over
S9+30dB.

It was also mentioned about filtering the stuff coming out of the K3 IF
port. In my testing, I have found that additional bandpass filtering
between the K3 IF and buffer are definitely required to avoid spurious
mixing products between signals in the K3 BPF passbands and the internal
signals coming out the essentially unfiltered K3 IF port (mostly LO and
its harmonics). This is especially the case on 40m where a lot of strong
signals can appear in the passband. I have found a 4th order bandpass
filter to be acceptable for this task.

73,
Larry N8LP

> Message: 48
> Date: Mon, 11 Feb 2008 23:46:27 -0500
> From: Jerry Flanders <[hidden email]>
> Subject: Re: [Elecraft] K3 if isolation of softrock lite used as
> panadapter
> To: "stephen pearce" <[hidden email]>, [hidden email]
> Message-ID: <[hidden email]>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> I assume a simple MMIC amp plus a simple resistive attenuator circuit
> will provide enough isolation and also provide for matching levels
> up/down as may be necessary. At least, that will be my first cut at
> the problem unless somebody else comes up with a better plan before
> my K3 arrives.
>
> At down east microwave ( http://www.downeastmicrowave.com/cat-frame.htm ),
> see the
> <http://literature.agilent.com/litweb/pdf/5967-6159E.pdf>INA10386
> (DC-2GHz, 24dBG, 3.5dB NF +14dbm 1dB Gain compression ) for only $5.
> Very easy to use something like this, I think.
>
> Depending on the signal level of the K3 IF output, we might get
> enough isolation from a resistive attenuator alone and still have a
> usable signal level on the softrock panadaptor.
>
> I would much prefer a plug and play manufactured solution if it takes
> more than an attenuator, but not an expensive one.
>
> Jerry W4UK
>

DW Holtman

UNPCBs

In reply to this post by Jerry Flanders

Hello,

Are these really necessary? Didn't Elecraft make the K2 to where additional
parts are really not necessary? I have ordered every option that I will ever
want along with a Elecraft Mic, why would I want to pay for UNPCBS?

Should companies be able to "mine" information such as who ordered what from
this forum and send E-Mails for selling their goods? I understand that this
is parts for K2. Maybe this is alright and I'm all wet.

Any thoughts would be greatly appreciated.

Best,

DW Holtman

WB7SSSN

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Mike S-8

Re: UNPCBs

At 09:50 AM 2/12/2008, DW Holtman wrote...
>Should companies be able to "mine" information such as who ordered
>what from this forum and send E-Mails for selling their goods? I
>understand that this is parts for K2. Maybe this is alright and I'm
>all wet.

If you received spam from a list subscriber who obviously got your
address from this list, IMHO they should be removed/banned from the
list. Whether they are a list subscriber or not, you should report them
to their ISP, they are no doubt in violation of their TOS/AUP.

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Gary Hvizdak

RE: UNPCBs

In reply to this post by DW Holtman

Tue 12 Feb 2008 09:50:45 EST DW Holtman (WB7SSSN) wrote ...

Are these really necessary? Didn't Elecraft make the K2 to where additional

parts are really not necessary? I have ordered every option that I will
ever want along with a Elecraft Mic, why would I want to pay for UNPCBS?

Should companies be able to "mine" information such as who ordered what from

this forum and send E-Mails for selling their goods? I understand that this

is parts for K2. Maybe this is alright and I'm all wet.

Any thoughts would be greatly appreciated.

--

No, unpcbs are not really necessary. (If they were, then as you point
out, Elecraft would include them with the K2.) However, they are really
convenient. As is our rework-free K2 assembly method and our K2 internal
mic adaptor.

Since Elecraft chooses not to include a flier describing our products
with the K2, replying to Reflector posts like yours is the best way for us
to make K2 owners aware of our products before they begin assembly.

FYI, there are many K2 owners who did not have the benefit of learning
about our products until they had already built their K2s. My off Reflector
emails to you were intended solely to give you the opportunity to choose for
yourself whether to take advantage of our products.

If you visit our Frequently Asked Questions page and the eHam Reviews,
you'll find comments from many delighted users of our products (including
many posts in the Reflector archives).

73,
Gary KI4GGX
(unpcbs.com webmaster)

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Darwin, Keith

RE: UNPCBs

In reply to this post by DW Holtman

DW Holtman wrote:

> I have ordered every option that I will ever want along with a
Elecraft Mic,
> why would I want to pay for UNPCBS?

You wouldn't. The benefit of the unpcbs & such is that you can
eliminate rework when adding options. Folks like me can start with a
basic K2 with the rework eliminators and then add options later without
having to do any rework on the K2 boards. Some value this approach,
others scoff at it. In your case, if you have all the options you'll
ever want, won't be making any changes and never plan to sell the K2,
then you can ignore the UNPCBS. If you want to try different options,
or may some day sell the K2, then the UNPCBS / Rework Eliminators are
nice to have.

Elecraft built the K2 to be inexpensive and leaving out a handful of
parts apparently was a small part of that plan. I'm one of those who
wish they had NOT done it that but instead built the K2 from the start
to be fully plug & play. I want the freedom to just plug in an option
without having to make mods to the base unit, and then to later unplug
it and return to the stock radio. UNPCBS & Rework Eliminators (whatever
they're called these days) have allowed my K2 to be just that.

> Should companies be able to "mine" information such as who ordered
what from
> this forum and send E-Mails for selling their goods?

You make it sound as if some robot is scanning the list for a bunch of
e-mail addresses and then mass spamming us. I don't think that's the
case. These products do not benefit you once your K2 is built so the
time to consider them is at the start. Gary is part of the list and
will let people know about his product at the appropriate time.

- Keith N1AS -
- K2 5411.ssb.100 -
- K3 Wave 3 -
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Don Wilhelm-4

Re: UNPCBs

In reply to this post by DW Holtman

There is no real need for the UNPCBs whether one has ordered all the
options or not.

When building the K2, follow the instructions in the manual. There is
an optimum time to install the parts for the different options and the
manual tells you when to do that. I would suggest only one exception to
that which is to install the KSB2 components that go onto the front
panel during the population of the Front Panel Board sometime before you
install the knobs.

The idea is that the base K2 should be tested before any changes for
options are made.

Do not install the K60XV changes until you have completed anf tested the
base K2 (that is pointed out in the manual).

The amount of extra work to build the base K2 and then add the options
later is (IMHO) trivial, but others may differ. Yes, there is a small
amount of desoldering to be done, but in each case the component already
soldered in can be destroyed and its leads removed one at a time. The
solder pads can be cleaned up with solder wick afterwards and if solder
remains in the hole, you can heat it and use a stainless steel sewing
needle or a toothpick to push through the hole and open it for the new
component lead.

73,
Don W3FPR

PS: If you feel your email address has been 'mined' from the list, you
may want to report that to the list manager, Eric Swartz
([hidden email]).

DW Holtman wrote:

M0XDF

Re: UNPCBs

In reply to this post by Darwin, Keith

Ah - you need a K3 then :-)

On 12/2/08 15:31, "Darwin, Keith" <[hidden email]> sent:

> I'm one of those who
> wish they had NOT done it that but instead built the K2 from the start
> to be fully plug & play.

--
It came to me that reform should begin at home, and since that day I have
not had time to remake the world. -Will Durant, historian (1885-1981)

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Solosko, Robert B (Bob)

RE: UNPCBs

In reply to this post by DW Holtman

Hello DW,

There are a few people who are making things for the K2 that are
not provided by Elecraft that provide additional capabilities and
convenience - these are individuals, like Gary Hvizdak, Don Wilhelm,
Mike Phipps and Jack Smith, who don't sell a lot of their products and
don't make any significant profit from them either. You'll see them post
information about their products to the reflector, and occasionally, as
in Gary's case, send e-mail directly to someone who has just ordered a
K2 and not burden the entire list.

My K2 was built with Gary's UNPCBs, and now includes Don's fixed
audio output board (which he no longer as available but may be picked up
by Tom Hammond, N0SS), and which, among other things, I use to drive
Jack Smith's Z100 tuning indicator.

There are obviously differing opinions about the usefulness of
the UNPCBs. Don Wilhelm, who is a very experienced builder (and an
invaluable resource to all of us - he's helped me solve a number of
problems with my K2), has no problems removing and replacing components
- but some of us do. Even if you've ordered all of the K2 options you're
ever likely to install, you still need to build the basic K2 first and
calibrate and test it before adding the options. That means removing and
replacing components. I built by K2 with the UNPCBs several years ago
and then added options one at a time over the last few years. For me,
adding options were then really just plug-and-play, and I avoided the
dreaded "unsoldering and replacing components". The UNPCBs had another
advantage when my K2 developed a problem that required the removal of
several of the options to trace down - all I had to do was plug the
UNPCBs back in, in place of the removed options. Without them, I would
have had to again unsolder, remove and replace some components. Don does
raise a good point with the UNPCBs in that installing the K60XV UNPCB
may cause calibration problems (if I did, I wasn't aware of it and my K2
seemed to work fine). But there appear to be no issues with the
remaining UNPCBs.

Bob W1SRB

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of DW Holtman
Sent: Tuesday, February 12, 2008 9:51 AM
To: [hidden email]
Subject: [Elecraft] UNPCBs

Hello,

Are these really necessary? Didn't Elecraft make the K2 to where
additional parts are really not necessary? I have ordered every option
that I will ever want along with a Elecraft Mic, why would I want to pay
for UNPCBS?

Should companies be able to "mine" information such as who ordered what
from this forum and send E-Mails for selling their goods? I understand
that this is parts for K2. Maybe this is alright and I'm all wet.

Any thoughts would be greatly appreciated.

Best,

DW Holtman

WB7SSSN

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Darwin, Keith

RE: UNPCBs

In reply to this post by M0XDF

... Yep, I ordered mine in Sept. :-)

-----Original Message-----
David Ferrington, M0XDF

Ah - you need a K3 then :-)

On 12/2/08 15:31, "Darwin, Keith" <[hidden email]> sent:

> I'm one of those who
> wish they had NOT done it that but instead built the K2 from the start

> to be fully plug & play.

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Darwin, Keith

RE: UNPCBs

In reply to this post by Don Wilhelm-4

Don raises a very good point here:

> The idea is that the base K2 should be tested before any changes for
options are made.

Doing the rework eliminators departs from this recommendation. Gary &
crew publish a very complete set of instructions for how to modify your
K2 manual prior to building the K2. I followed Gary's edits to a T and
my K2, complete with a full set of rework eliminators, went together
just fine.

BUT, if you're a bit lazy and don't do the manual update PRIOR to
building. If you try to jump between the 2 manuals in real time as you
build, if you screw something up, then you have a modified K2 that isn't
working and that is tougher to debug than a stock K2.

- Keith N1AS -
- K2 5411.ssb.100 -
- K3 Wave 3 -
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DW Holtman

Re: UNPCBs

In reply to this post by Solosko, Robert B (Bob)

Hello,

After reading this informative and well thought out letter (see below), I
have a better understanding on the situation. The people mentioned in the
letter has been helping the Elecraft community for years, I'm new and should
not be so skeptical about what is going on until I have a better
understanding of the situation.

I'm going to order what I need in the way of UNPCBs. It should help adding
the 100 watt unit etc, after the basic testing has been done with the basic
K2 unit.

Thank to everyone for all of the inputs.

Best,
DW Holtman
WB7SSN

----- Original Message -----
From: "Solosko, Robert B (Bob)" <[hidden email]>
To: "DW Holtman" <[hidden email]>
Cc: <[hidden email]>
Sent: Tuesday, February 12, 2008 9:19 AM
Subject: RE: [Elecraft] UNPCBs

Hello DW,

There are a few people who are making things for the K2 that are
not provided by Elecraft that provide additional capabilities and
convenience - these are individuals, like Gary Hvizdak, Don Wilhelm,
Mike Phipps and Jack Smith, who don't sell a lot of their products and
don't make any significant profit from them either. You'll see them post
information about their products to the reflector, and occasionally, as
in Gary's case, send e-mail directly to someone who has just ordered a
K2 and not burden the entire list.

My K2 was built with Gary's UNPCBs, and now includes Don's fixed
audio output board (which he no longer as available but may be picked up
by Tom Hammond, N0SS), and which, among other things, I use to drive
Jack Smith's Z100 tuning indicator.

There are obviously differing opinions about the usefulness of
the UNPCBs. Don Wilhelm, who is a very experienced builder (and an
invaluable resource to all of us - he's helped me solve a number of
problems with my K2), has no problems removing and replacing components
- but some of us do. Even if you've ordered all of the K2 options you're
ever likely to install, you still need to build the basic K2 first and
calibrate and test it before adding the options. That means removing and
replacing components. I built by K2 with the UNPCBs several years ago
and then added options one at a time over the last few years. For me,
adding options were then really just plug-and-play, and I avoided the
dreaded "unsoldering and replacing components". The UNPCBs had another
advantage when my K2 developed a problem that required the removal of
several of the options to trace down - all I had to do was plug the
UNPCBs back in, in place of the removed options. Without them, I would
have had to again unsolder, remove and replace some components. Don does
raise a good point with the UNPCBs in that installing the K60XV UNPCB
may cause calibration problems (if I did, I wasn't aware of it and my K2
seemed to work fine). But there appear to be no issues with the
remaining UNPCBs.

Bob W1SRB

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of DW Holtman
Sent: Tuesday, February 12, 2008 9:51 AM
To: [hidden email]
Subject: [Elecraft] UNPCBs

Hello,

Are these really necessary? Didn't Elecraft make the K2 to where
additional parts are really not necessary? I have ordered every option
that I will ever want along with a Elecraft Mic, why would I want to pay
for UNPCBS?

Should companies be able to "mine" information such as who ordered what
from this forum and send E-Mails for selling their goods? I understand
that this is parts for K2. Maybe this is alright and I'm all wet.

Any thoughts would be greatly appreciated.

Best,

DW Holtman

WB7SSSN

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Jerry Flanders

Re: K3 if isolation of softrock lite used as panadapter

In reply to this post by Jack Smith-6

Thanks, Jack

I just recently realized that many people assume that one sets the
softrock center freq to the center of the IF passband. This would
require MUCH isolation to keep the LO under control. This is NOT how
I would recommend it be used. I would set the softrock's oscillator
below the IF passband, outside the area passed by the roofing filter.

Since all I ever use in my panadaptor with either my 756PRO3 or
SDR-1000 or sofrtock 40 is about +/- 12 KHz anyway, I will be quite
happy setting the LO to 12 KHz below the IF center, and let the SR
panadaptor display the K3 tuned freq +/- 12 KHz.

With this design, isolation problems may be simplified. Also, there
is no need for a premium soundcard.

I hope that, with the LO well outside the IF passband, we will need
considerably less isolation. I actually have a premium soundcard
available, so I can move the LO even farther away if that helps. But
I won't know for sure until mine comes in and I warm up the soldering iron.

Jerry W4UK

At 06:14 AM 2/12/2008, you wrote:

>Jerry:
>
>You might first wish to measure the reverse isolation of a MMIC
>before you make that statement. While they are great devices,
>isolation is not their strong suit.
>
>The Gali74, which I use for a variety of purposes, has an isolation
>of around 28 dB at the K2's IF frequency. The gain is 25 dB, so if
>you pad the output for unity gain, you are around 53 dB. With a
>Softrock's typical -40 dBm LO leakage, that strikes me a bit on the
>marginal side.
>
>
>Jack K8ZOA
>
>
>
>Jerry Flanders wrote:
>>I assume a simple MMIC amp plus a simple resistive attenuator
>>circuit will provide enough isolation and also provide for matching
>>levels up/down as may be necessary. At least, that will be my first
>>cut at the problem unless somebody else comes up with a better plan
>>before my K3 arrives.
>>
>>At down east microwave ( http://www.downeastmicrowave.com/cat-frame.htm ),
>>see the
>><http://literature.agilent.com/litweb/pdf/5967-6159E.pdf>INA10386
>>(DC-2GHz, 24dBG, 3.5dB NF +14dbm 1dB Gain compression ) for only
>>$5. Very easy to use something like this, I think.
>>
>>Depending on the signal level of the K3 IF output, we might get
>>enough isolation from a resistive attenuator alone and still have
>>a usable signal level on the softrock panadaptor.
>>
>>I would much prefer a plug and play manufactured solution if it
>>takes more than an attenuator, but not an expensive one.
>>
>>Jerry W4UK
>>
>>
>>At 07:29 PM 2/11/2008, stephen pearce wrote:
>>>A month or so ago one of the Elecraft engineers pointed out that
>>>if the softrock lite rx is connected directly to the if port on the k3
>>>there was a significant issue with coupling of rf from the softrock
>>>board into the
>>>rx if of the k# with consequent degradation in rx performance ...
>>>
>>>Has anyone produced a design for a suitable isolation amplifier/
>>>coupling stage which will
>>>prevent this and still allow the softrock to be used (in conjunction
>>>with a pc) as a panadapter?
>>>
>>>Thanks
>>>
>>>
>>>--
>>>Stephen Pearce
>>>zl1any
>>>Whangarei
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>>>Elecraft web page: http://www.elecraft.com
>>
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dave.wilburn

Re: UNPCBs

In reply to this post by DW Holtman

I liked the rework eliminators. If I am troubleshooting the rig or
adding features, it is just an unplug and a plug. I do not have to
take the rig apart, remove or add hard ware to the circuits to add
features. I think they are well worth the minor added cost. After
damaging my DSP, I was able to unplug it and plug in the board and I
was done. YMMV. Good luck, K2 is a great rig.

Dave Wilburn
K4DGW
K2/100 - S/N 5982

DW Holtman wrote:

> Hello,
>
> Are these really necessary? Didn't Elecraft make the K2 to where
> additional parts are really not necessary? I have ordered every option
> that I will ever want along with a Elecraft Mic, why would I want to pay
> for UNPCBS?
>
> Should companies be able to "mine" information such as who ordered what
> from this forum and send E-Mails for selling their goods? I understand
> that this is parts for K2. Maybe this is alright and I'm all wet.
>
> Any thoughts would be greatly appreciated.
>
> Best,
>
> DW Holtman
>
> WB7SSSN
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>