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Low-tech lighting

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Ken Kopp-3

Low-tech lighting

If one wanted to convert a conventional home incandescent desk lamp
for 12V operation, there are widely available 12V screw-in bulbs of
"normal" 115V "home" size. They're sold by most RV and/or marine
dealers -and- by WalMart in their RV section.

73! Ken Kopp - K0PP
[hidden email]

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dj7mgq

KRX3 mechanical alignment problem

Hi,

While assembling my KRX3 I ran into a minor mechanical problem. Four of
the "bumps" along the edge of the main KRX3 board, the one with all the
filters, do not align correctly with the holes in the shielding - The
holes which the "bumps" are supposed to "snap" into. Roughly the area
where this occurs could be described as J92 to E2 to E3 to E5 on the
circuit board. All other holes, bumps, standoffs etc. are O.K. and fit
perfectly.

I'm already in touch with Gary at K3 support. He says that I am the
first to report the misalignment. Am I really the only one to have
noticed this?

vy 73 de toby
--
DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz)
K2 #85, K2/100 #3248, K3/100 #67

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AD6XY

Re: KRX3 mechanical alignment problem

Mine was perfect. Do you have it upside down or perhaps it was damaged in shipping?

dj7mgq wrote

Hi,

While assembling my KRX3 I ran into a minor mechanical problem. Four of
the "bumps" along the edge of the main KRX3 board, the one with all the
filters, do not align correctly with the holes in the shielding - The
holes which the "bumps" are supposed to "snap" into. Roughly the area
where this occurs could be described as J92 to E2 to E3 to E5 on the
circuit board. All other holes, bumps, standoffs etc. are O.K. and fit
perfectly.

I'm already in touch with Gary at K3 support. He says that I am the
first to report the misalignment. Am I really the only one to have
noticed this?

vy 73 de toby
--
DD5FZ (ex 4n6fz, dj7mgq, dg5mgq, dd5fz)
K2 #85, K2/100 #3248, K3/100 #67

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Eric Swartz - WA6HHQ

Re: KRX3 mechanical alignment problem

Administrator

In reply to this post by dj7mgq

Hi Toby,

We had a change in PCB vendors, and they slightly changed the location
on some of the break-off points for the PCB handling frame on the KRX3
board (used during automated soldering etc. ) Fortunately this is not a
major issue. The other remaining 'nubs' from the break off part of the
pcb still align with the remaining alignment holes on the KRX3 case. The
ones that do not are not a problem.

73, Eric WA6HHQ
---

Toby Deinhardt wrote:

> Hi,
>
> While assembling my KRX3 I ran into a minor mechanical problem. Four
> of the "bumps" along the edge of the main KRX3 board, the one with all
> the filters, do not align correctly with the holes in the shielding -
> The holes which the "bumps" are supposed to "snap" into. Roughly the
> area where this occurs could be described as J92 to E2 to E3 to E5 on
> the circuit board. All other holes, bumps, standoffs etc. are O.K. and
> fit perfectly.
>
> I'm already in touch with Gary at K3 support. He says that I am the
> first to report the misalignment. Am I really the only one to have
> noticed this?
>
> vy 73 de toby

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Mario Lorenz

Re: KRX3 mechanical alignment problem

Am 06. Oct 2008, um 14:01:35 schrieb Eric Swartz - WA6HHQ, Elecraft:
> Hi Toby,
>
> We had a change in PCB vendors, and they slightly changed the location
> on some of the break-off points for the PCB handling frame on the KRX3
> board (used during automated soldering etc. ) Fortunately this is not a
> major issue. The other remaining 'nubs' from the break off part of the
> pcb still align with the remaining alignment holes on the KRX3 case. The
> ones that do not are not a problem.

Eric,

I've complained to support@elecraft about the poor quality of the PCB
cutting as well. Not only do I have the same problem as Toby, but I also
had to trim the LPA board so that it would fit.

For the KRX3, What is your suggested solution -- push in the board by
force, or remove the misaligned "nubs" ?
(I went for a) given I had the board already half in, but the problem I
have is a "hash" when turning the VFO knob, which could be shielding
issues....

Mario

--
Mario Lorenz Internet: <[hidden email]>
Ham Radio: DL5MLO@DB0ERF.#THR.DEU.EU
"I hear that if you play the NT 4.0 CD backwards, you get a Satanic message!"
"That's nothing. If you play it forward, it installs NT 4.0!"
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dj7mgq

Re: KRX3 mechanical alignment problem

In reply to this post by Eric Swartz - WA6HHQ

Hi Eric,

in other words, the "offending" "nubs" can be filed off without any
disadvantages? Right now they are causing a mismatch between the top and
bottom part of the shielding - a small gap (ca. 1mm-2mm) because the
"bumps" are pushing against the side wall.

vy 73 de toby

Eric Swartz - WA6HHQ, Elecraft wrote:

> Hi Toby,
>
> We had a change in PCB vendors, and they slightly changed the location
> on some of the break-off points for the PCB handling frame on the KRX3
> board (used during automated soldering etc. ) Fortunately this is not a
> major issue. The other remaining 'nubs' from the break off part of the
> pcb still align with the remaining alignment holes on the KRX3 case. The
> ones that do not are not a problem.
>
> 73, Eric WA6HHQ
> ---
>
> Toby Deinhardt wrote:
>> Hi,
>>
>> While assembling my KRX3 I ran into a minor mechanical problem. Four
>> of the "bumps" along the edge of the main KRX3 board, the one with all
>> the filters, do not align correctly with the holes in the shielding -
>> The holes which the "bumps" are supposed to "snap" into. Roughly the
>> area where this occurs could be described as J92 to E2 to E3 to E5 on
>> the circuit board. All other holes, bumps, standoffs etc. are O.K. and
>> fit perfectly.
>>
>> I'm already in touch with Gary at K3 support. He says that I am the
>> first to report the misalignment. Am I really the only one to have
>> noticed this?
>>
>> vy 73 de toby
>
>

Alexandr Kobranov

Re: KRX3 mechanical alignment problem

In reply to this post by Mario Lorenz

Mario,
imho there is c) option - ask for replacement, this is out of spec if
one is not able to put part for more then 500$ inside without tools/mods.

But only 2 stations reported such problems here, maybe some bad-luck only?

73!
Lexa, ok1dst
K3/10 #727

Mario Lorenz napsal(a):

> Am 06. Oct 2008, um 14:01:35 schrieb Eric Swartz - WA6HHQ, Elecraft:
>> Hi Toby,
>>
>> We had a change in PCB vendors, and they slightly changed the location
>> on some of the break-off points for the PCB handling frame on the KRX3
>> board (used during automated soldering etc. ) Fortunately this is not a
>> major issue. The other remaining 'nubs' from the break off part of the
>> pcb still align with the remaining alignment holes on the KRX3 case. The
>> ones that do not are not a problem.
>
> Eric,
>
> I've complained to support@elecraft about the poor quality of the PCB
> cutting as well. Not only do I have the same problem as Toby, but I also
> had to trim the LPA board so that it would fit.
>
> For the KRX3, What is your suggested solution -- push in the board by
> force, or remove the misaligned "nubs" ?
> (I went for a) given I had the board already half in, but the problem I
> have is a "hash" when turning the VFO knob, which could be shielding
> issues....
>
> Mario
>

Eric Swartz - WA6HHQ

Re: KRX3 mechanical alignment problem

Administrator

In reply to this post by Mario Lorenz

Hi Mario, Go ahead and file down the pcb numbs if needed. We are doing that on all current KRX3 boards we see that need it. 73, Eric
Mario Lorenz wrote:

Am 06. Oct 2008, um 14:01:35 schrieb Eric Swartz - WA6HHQ, Elecraft:

Hi Toby,

We had a change in PCB vendors, and they slightly changed the location 
on some of the break-off points for the PCB handling frame on the KRX3 
board (used during automated soldering etc. ) Fortunately this is not a 
major issue. The other remaining 'nubs' from the break off part of the 
pcb still align with the remaining alignment holes on the KRX3 case. The 
ones that do not are not a problem.


Eric,

I've complained to support@elecraft about the poor quality of the PCB
cutting as well. Not only do I have the same problem as Toby, but I also
had to trim the LPA board so that it would fit.

For the KRX3, What is your suggested solution -- push in the board by
force, or remove the misaligned "nubs" ?
(I went for a) given I had the board already half in, but the problem I
have is a "hash" when turning the VFO knob, which could be shielding
issues....

Mario

Eric Swartz - WA6HHQ

Re: KRX3 mechanical alignment problem

Administrator

In reply to this post by dj7mgq

Absolutely. Go ahead and file them. It should be very easy to do. We
want the top and bottom covers on the KRX3 to mesh fully to give good
shielding.

73, Eric

Toby Deinhardt wrote:

> Hi Eric,
>
> in other words, the "offending" "nubs" can be filed off without any
> disadvantages? Right now they are causing a mismatch between the top
> and bottom part of the shielding - a small gap (ca. 1mm-2mm) because
> the "bumps" are pushing against the side wall.
>
> vy 73 de toby
>
>
> Eric Swartz - WA6HHQ, Elecraft wrote:
>> Hi Toby,
>>
>> We had a change in PCB vendors, and they slightly changed the
>> location on some of the break-off points for the PCB handling frame
>> on the KRX3 board (used during automated soldering etc. ) Fortunately
>> this is not a major issue. The other remaining 'nubs' from the break
>> off part of the pcb still align with the remaining alignment holes on
>> the KRX3 case. The ones that do not are not a problem.
>>
>> 73, Eric WA6HHQ
>> ---
>>
>> Toby Deinhardt wrote:
>>> Hi,
>>>
>>> While assembling my KRX3 I ran into a minor mechanical problem. Four
>>> of the "bumps" along the edge of the main KRX3 board, the one with
>>> all the filters, do not align correctly with the holes in the
>>> shielding - The holes which the "bumps" are supposed to "snap" into.
>>> Roughly the area where this occurs could be described as J92 to E2
>>> to E3 to E5 on the circuit board. All other holes, bumps, standoffs
>>> etc. are O.K. and fit perfectly.
>>>
>>> I'm already in touch with Gary at K3 support. He says that I am the
>>> first to report the misalignment. Am I really the only one to have
>>> noticed this?
>>>
>>> vy 73 de toby
>>
>>