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new K2 rx audio problem figured out

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Kevin Hulina

new K2 rx audio problem figured out

I finally figured out why i wasn't getting rx audio on my newly built
K2. I would take it apart, and it would work when I was troubleshooting
it. Put it back together and I had no rx audio. So, I started putting
it together 1 screw at a time and found the point where I lost rx
audio. U6 on the control board was coming into contact with the board
for the vfo encoder. When i would take the screws out of the control
board, it would let it away from the front board enough for it to work.
I cut down a couple standoffs to be about 1/16" longer than the stock
ones with the kit and it holds the control board off just enough to no
longer cause a problem.
I sent this to Elecraft support as well. Maybe something very minor
changed with one of the components nearby that is causing one of the
boards to sit ever so slightly different.
Now I can get back to trying to tune it up!

W9KH
Kevin

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Ross Primrose

Re: new K2 rx audio problem figured out

Sounds like you left out a couple of washers that should have given you
the proper spacing with the original standoffs...

73, Ross N4RP

On 5/9/2015 10:43 AM, Kevin Hulina wrote:

> I finally figured out why i wasn't getting rx audio on my newly built
> K2. I would take it apart, and it would work when I was
> troubleshooting it. Put it back together and I had no rx audio. So, I
> started putting it together 1 screw at a time and found the point
> where I lost rx audio. U6 on the control board was coming into
> contact with the board for the vfo encoder. When i would take the
> screws out of the control board, it would let it away from the front
> board enough for it to work. I cut down a couple standoffs to be
> about 1/16" longer than the stock ones with the kit and it holds the
> control board off just enough to no longer cause a problem.
> I sent this to Elecraft support as well. Maybe something very minor
> changed with one of the components nearby that is causing one of the
> boards to sit ever so slightly different.
> Now I can get back to trying to tune it up!
>
> W9KH
> Kevin
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.”

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ktalbott

Re: new K2 rx audio problem figured out

In reply to this post by Kevin Hulina

Reminds me of a PC I was upgrading back when BIOS was in EPROM. Worked fine
until I put the top on the case. After several tries I reached over and
turned off the lights. It quit! EPROM required light stimulation to work,
it would not work in the dark!

Ken - ke4rg

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Kevin
Hulina
Sent: Saturday, May 9, 2015 10:43 AM
To: [hidden email]
Subject: [Elecraft] new K2 rx audio problem figured out

I finally figured out why i wasn't getting rx audio on my newly built K2. I
would take it apart, and it would work when I was troubleshooting it. Put
it back together and I had no rx audio. So, I started putting it together 1
screw at a time and found the point where I lost rx audio. U6 on the
control board was coming into contact with the board for the vfo encoder.
When i would take the screws out of the control board, it would let it away
from the front board enough for it to work.
I cut down a couple standoffs to be about 1/16" longer than the stock ones
with the kit and it holds the control board off just enough to no longer
cause a problem.
I sent this to Elecraft support as well. Maybe something very minor changed
with one of the components nearby that is causing one of the boards to sit
ever so slightly different.
Now I can get back to trying to tune it up!

W9KH
Kevin

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vk2rq

Re: new K2 rx audio problem figured out

In reply to this post by Kevin Hulina

Someone else on this list recently experienced the exact same problem after he had opened up his rig to install a KDSP2. I think a bit of insulating tape fixed it for good.

73,
Matt VK2RQ

> On 10 May 2015, at 12:43 am, Kevin Hulina <[hidden email]> wrote:
>
> I finally figured out why i wasn't getting rx audio on my newly built K2. I would take it apart, and it would work when I was troubleshooting it. Put it back together and I had no rx audio. So, I started putting it together 1 screw at a time and found the point where I lost rx audio. U6 on the control board was coming into contact with the board for the vfo encoder. When i would take the screws out of the control board, it would let it away from the front board enough for it to work. I cut down a couple standoffs to be about 1/16" longer than the stock ones with the kit and it holds the control board off just enough to no longer cause a problem.
> I sent this to Elecraft support as well. Maybe something very minor changed with one of the components nearby that is causing one of the boards to sit ever so slightly different.
> Now I can get back to trying to tune it up!
>
> W9KH
> Kevin
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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KK4LSG

Re: new K2 rx audio problem figured out

I had the same problem. Electrical tape did the trick. Thanks to Don for the assistance on that head scratcher.

> On May 9, 2015, at 15:24, Matt VK2RQ <[hidden email]> wrote:
>
> Someone else on this list recently experienced the exact same problem after he had opened up his rig to install a KDSP2. I think a bit of insulating tape fixed it for good.
>
> 73,
> Matt VK2RQ
>
>> gmail.com
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KK4LSG

Re: new K2 rx audio problem figured out

Sorry. Didn't sign off

Kevin
KN4M

> On May 11, 2015, at 17:54, Gmail <[hidden email]> wrote:
>
> I had the same problem. Electrical tape did the trick. Thanks to Don for the assistance on that head scratcher.
>
>
>> On May 9, 2015, at 15:24, Matt VK2RQ <[hidden email]> wrote:
>>
>> Someone else on this list recently experienced the exact same problem after he had opened up his rig to install a KDSP2. I think a bit of insulating tape fixed it for good.
>>
>> 73,
>> Matt VK2RQ
>>
>>> gmail.com