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Re: [TenTec] Encoder shaft stability

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] Encoder shaft stability
From: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 14 Apr 2010 01:36:55 -0400
List-post: <mailto:tentec@contesting.com>
John wrote:

I have two Jupiters of 2002 vintage and an OMNI 7. I removed the Adjustable Drag Bezel (and all associated hardware) completely on all three units and went to the heavy weighted Orion II Knob with optional Soft Rubber (traction) Ring

My personal taste is to have the least drag on the Tuning Knob as possible--where I can literally spin it for fast frequency changes if/when desired. Whereas there is an electronic "Frequency Lock" Pushbutton on all three units--there is no need that I can see for any "drag" to prevent accidental frequency changes--even under (high vibration) mobile operating conditions.

I found that even with the drag components removed, the damping oil in the encoder bearing of my RX340 made its action significantly stiffer than I wanted, so I took the encoder apart and flushed out the damping oil. I lubricated it with 10W30 Mobil 1. If I did it over again, I'd use something just the merest touch more viscous than that -- perhaps 60W racing oil. I think the 340 knob may be the same "weighted aluminum" knob that is available for the transceivers. And yes, it's appalling that the knob skirts are so far off center.

Best regards,

Charles





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