[Elecraft] T32MI K3 rig problem

[Bob Naumann]

How do they know it's the radio and not the power supply shutting off?

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Rich - K1HTV
Sent: Monday, March 29, 2010 7:46 PM
To: iz1crr at tin.it
Cc: elecraft at mailman.qth.net
Subject: [Elecraft] T32MI K3 rig problem

IZ1CRR

Maury,
   Regarding the 40M problem with Derek's K3, it may be related to stray 40M
RF
getting into the radio when it is keyed. If this is the cause, an easy fix
may
be to create an imaginary ground on it by connecting a 1/4 wave long (around
10.56 Meters or 34.6  feet) wire to the ground screw on the back of the K3.
The
high impedance end of the 1/4 wave wire is transformed to a low impedance at
the
radio. This should reduce any stray RF around the radio. It is a simple
thing to
try and may fix the problem. 

I would be interested to hear if it fixes the 40 Meter problem.

I had no difficulty in working T32MI on CW & SSB with 100 Watts and a wire
antenna from my QTH in Virginia,  my IOTA number 964. They are a great
operators!

73,
Rich - K1HTV
Retired from VOA 

= = = 
>From a post of the K3 Reflector from Roland, DC1RS

2010-03-28 08:30

This morning local time (Saturday 21:00 gmt) we started our journey to
Caroline
island. Estimate 5 days sailing. Almost 9,000 Qs in our logs from the 3 days
on
Malvern. Derek's beloved Elecraft K3 has a problem! On 40m only, the instant
the
rig is keyed, even at min power, it switches off as if the supply plug is
disconnected. After an indeterminate delay power is restored and the rig can
be
used on other bands. Any ideas, please contact Maury, IZ1CRR (iz1crr @
tin.it).
73 Derek

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