K3 Audio I/O Daughter Board

I am really enjoying my new K3/100 (#4629) .  It worked perfectly on
completion from the kit earlier this month.  Today I noticed the Audio I/O
daughter board E850236 does have some vertical play in the rear panel after
mic and earphone plugs are inserted and there is additional leverage from
the plug bodies themselves.

It looks like this would be normal since I see no rear securing hardware for
the installed board.  Is that right?  The digital I/O board is, of course
secured by the RS-232 connectors to the back panel.  maybe some short
plastic sleeves around the jacks would help.

Thought I remember seeing something about this but I didn't find anything in
the reflector archives, but maybe I didn't search for the right terms.

Roger Gagos, K6EQ
Escondido, CA
______________________________________________________________
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

[GARY-2]

Elecraft must be having a good sales month if Roger bought his K3 (s/n 46xx)
earlier this month and I just bought mine at last weekend's ARRL
Southwestern Div Convention (s/n 47xx) and the month even isn't over yet.
Congratulations Eric & staff. I am just starting my assembly and will look
for this audio board issue. I'd also like to see everything well supported
inside because I plan to transport my K3 from time to time and don't want
any intermittent problems. The first I found was the toroids in my KAT3 came
bent over, especially L8. When I carefully straightened all of them I
noticed L8 had to be lifted more than 1/8" above the others to snug up the
last wraps of wire on it. Dale Farmer indicated that this is nothing to be
concerned about however I'd be more comfortable if the toroids were
supported more. Maybe a dab of silicone sealant below each? Any suggestions?
Gary

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Roger Gagos
Sent: Friday, September 24, 2010 2:13 PM
To: [hidden email]
Subject: [Elecraft] K3 Audio I/O Daughter Board

I am really enjoying my new K3/100 (#4629) .  It worked perfectly on
completion from the kit earlier this month.  Today I noticed the Audio I/O
daughter board E850236 does have some vertical play in the rear panel after
mic and earphone plugs are inserted and there is additional leverage from
the plug bodies themselves.

It looks like this would be normal since I see no rear securing hardware for
the installed board.  Is that right?  The digital I/O board is, of course
secured by the RS-232 connectors to the back panel.  maybe some short
plastic sleeves around the jacks would help.

Thought I remember seeing something about this but I didn't find anything in
the reflector archives, but maybe I didn't search for the right terms.

Roger Gagos, K6EQ
Escondido, CA
______________________________________________________________
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

______________________________________________________________
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

[Don Wilhelm-4]

  Gary,

Elecraft does not recommend any fixatives on toroids in any of its kits,
and I also strongly discourage its use.
Many fixatives will alter the inductance, and change other
characteristics.  Additionally, toroids mounted with fixatives make
repairs more difficult (if a toroid must be removed) and will likely
void the warranty.

The toroids are sturdy enough to stand normal abuse in portable/mobile
situations as well as during transport and shipping.
As testimony to that fact, consider that one K2 I built traveled several
million miles over the US in the cab of an 18 wheeler.  No fixatives
were used and no toroid failures ever occurred - and I worked on that
same K2 (for another problem) only about 3 weeks ago.

73,
Don W3FPR

On 9/26/2010 12:45 PM, Gary wrote:

> Elecraft must be having a good sales month if Roger bought his K3 (s/n 46xx)
> earlier this month and I just bought mine at last weekend's ARRL
> Southwestern Div Convention (s/n 47xx) and the month even isn't over yet.
> Congratulations Eric&  staff. I am just starting my assembly and will look
> for this audio board issue. I'd also like to see everything well supported
> inside because I plan to transport my K3 from time to time and don't want
> any intermittent problems. The first I found was the toroids in my KAT3 came
> bent over, especially L8. When I carefully straightened all of them I
> noticed L8 had to be lifted more than 1/8" above the others to snug up the
> last wraps of wire on it. Dale Farmer indicated that this is nothing to be
> concerned about however I'd be more comfortable if the toroids were
> supported more. Maybe a dab of silicone sealant below each? Any suggestions?
> Gary
>

______________________________________________________________
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