[Elecraft] K1-4 filter board resistance checks problem

[B. Scott Andersen]

Mark,

The resistance checks for these pin pairs should read > 100K ohms.
Infinity is a good number (and is greater than 100K ohms).

So, I believe you are in good shape. These are expected readings.
I would proceed with construction and I believe you'll find the board
is working.

If this isn't the case, of course, drop a line to the list or to me directly.
GL es 73!

-- Scott (NE1RD)

PS I just built one of these this month and had the same readings.

On Nov 27, 2007, at 4:06 AM, elecraft-request at mailman.qth.net wrote:

Message: 6
Date: Sun, 25 Nov 2007 20:17:20 -0500
From: "Mark Lampert (KB3OKS)" <kb3oks at gmail.com>
Subject: [Elecraft] Fwd: The results of your email commands
To: elecraft at mailman.qth.net
Message-ID:
	<eb287f0c0711251717r7344c8b9k4015a6fc6d9772e3 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

    I've just finished constructing my K1-4 filter board, and I'm failing
    three of the resistance checks which are all reading infinite
    resistance on my DMM:
    OK -- P1 pin 1, P1 pin 2
    XX -- P1 pin 3, P1 pin 4
    OK -- P2 pin 2, P2 pin 4
    XX -- P3 pin 1, P3 pin 3
    XX -- P3 pin 8, P3 pin 6

... all others are OK, including all tests across U1. Meter looks ok
    and is reading 0.1 Ohms when probes are touched together.

    Thanks very much for your time,

    73,

    Mark, KB3OKS
    kb3oks at gmail.com

B. Scott Andersen  | "Magic is real, unless declared integer."
bsandersen at mac.com | -- The collected sayings of Wiz Zumwalt
Acton, MA (NE1RD)  | http://www.bsandersen.com