[Elecraft] L1 in KAT2

Tue Feb 17 11:59:06 2004

Hi Tom,
	Yes, I'm very glad that I have that extra 2 or 3 inches to work with =
when sewing enameled wire on the cores. However, L1 and L2 use green =
vinyl-coated hookup wire. The procedure is to cut a piece 2 1/8 inches =
long and remove 1/8 inch insulation from BOTH ends. To me, this implies =
that the wire should not be trimmed after winding. Why else would the =
builder be required to strip insulation from both ends, if one end was =
going to be cut off anyway?
	Thanks for input. I'll trim the excess and continue construction. Sorry =
for bringing up this nit; but that's just the way I am (one of my duties =
on the job is to write detailed test procedures, so I'm kind of =
sensitized to this sort of thing).

Dan   KF4KKF

-----Original Message-----
From: [email protected] [mailto:[email protected]]=20
Sent: Tuesday, February 17, 2004 11:14 AM
To: Pawlak, Daniel; [email protected]
Subject: Re: [Elecraft] L1 in KAT2

Dan:

It is common for Elecraft to allow you MORE than ample wire length to =
wind=20
the cores. Normally, you'll have at least 2" of spare length on each end =
to=20
play with... this facilitates winding the cores... darn difficult to =
finish=20
the winding when you have only a very short length of wire to thread =
thru=20
the core on the last few turns.

Once the core's wound, cut the leads to length (usually about 1" on each =

side), strip/tin them, insert the entire wire length into the =
appropriate=20
holes, solder into place, THEN, grasp each lead individually with =
pliers,=20
pull gently on the lead WHILE reheating the joint, to remove any excess=20
wire 'slop' and the snug the core against the PC board. Repeat for the=20
remaining lead(s).

73,

Tom Hammond    N0SS

At 09:23 AM 2/17/04, Pawlak, Daniel wrote:
>Hi,
>
>             I am in the process of completing the KAT2, and am =
confused=20
> about the length of wire to be used for L1. In the manual a 2 1/8 inch =

> length of green hookup wire is specified for the 2 turns to be wound =
on a=20
> red core. When I wind 2 turns of this wire on the core I end up with a =

> lot of excess wire. I try to spread the 2 turns as far apart as I can, =

> but still have about a =BD inch extra after soldering both ends to the =
PCB.=20
> I checked a photo of a completed KAT2 in one of the Elecraft=20
> screensavers, and L1 looks ok: no loose windings and no extra wire.=20
> Actually, L2 has the same problem, but to a lesser degree. Has anybody =

> else noticed this?
>
>Thanks.
>
>Dan  KF4KKF
>
>
>
>
>
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