[Elecraft] RE: Elecraft Digest, Vol 23, Issue 29

[JONES, George]

My partial (and inelegant)solution to the K1 150KHZ tuning range being a bit "sharp" is to use a small mechanical slow-motion drive mounted directly on the VFO pot shaft, much as an extension drive shaft would be.

It has a 6:1  reduction which gives a smooth slow rate..

I do not fix it via its two fixing holes to the K1 panel for two reasons :

(1) I don't want to mess-up a good panel.

(2) I don't not want it operational all the time. In use, I trap it on on one of its' flanges with one
 finger tip for "bandspread". Otherwise, I use the control in the normal way.

 Works fine with 200HZ filter setting & allows me to QSY quickly

 Crucially - It is light-weight. It was sold via a Radio-shack type outlet here in UK some years ago.

Finally (SK posting prompted this...) I have mounted a 1940 vintage British forces morse key (W8 MkII) to the base of the K1 tilt stand - using two existing fore & aft mounting holes - it sits almost central with the Paddlette BP1 mounted to its right (that one is an approved mod..)
The constraint is that it can only be used with the exended tilt arms - but that works fine on desk or "trail"
for me.

72

George G4TPV


Message: 16
Date: Sun, 26 Mar 2006 11:05:03 -0800
From: "Rick Dettinger" <k7mw at cmc.net>
Subject: Re: [Elecraft] K1 tuning range
To: <Elecraft at mailman.qth.net>
Message-ID: <006e01c65108$3117f640$3a808843 at K7MW>
Content-Type: text/plain;	charset="iso-8859-1"

Thanks to the list for the comments and suggestions on K1 tuning range.
Good idea Ralph.  If you can fine tune just a little more, you will find
even  more CW up to 7123 or so.  7120 khz plus or minus BC QRM is SKCC
suggested freq. and quite a bit of activity up there.  SKCC  is a group of
over 1700 CW operators who have extended straight key nite to always.  Same
rules as SKN, i.e.  mechanical keys only.   I have thought about a 100 khz
tuning range going from 7025 khz to 7125 khz but that would involve a new
xtal in the premix circuit.  I guess I will go for 125 khz.  This gives
about 12 khz per rev.  Not too bad, I think.   73 - Rick -
     -- --- Original Message -----
From: "Ralph Tyrrell" <w1tf at yahoo.com>
To: <Elecraft at mailman.qth.net>
Sent: Friday, March 24, 2006 10:28 AM
Subject: Re: [Elecraft] K1 tuning range


>

Me
73, Ken K3IU

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