[Boatanchors] A challingling problem with a National NC-300

[Garey Barrell]

Do you have the correct bead chain?     The "common" chain is a #3, 
while National used a #2 chain.  They have a different "pitch" or number 
of balls / inch.

73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B, C-Line & TR-4/C Service Supplement CDs
<www.k4oah.com>



Brian/VE3UU wrote:
> Gentlemen.
>
> Here is a head scratcher for you. Before you read on, some of the best 
> brains in the amateur world, Gene, WØQFC, Brian VE3IX, and of course myself, 
> VE3UU, have had a go at the problem. Only Brian, VE3IX has enough hair left 
> to continue to scratch. I'm now bald and I think Gene may be as well 
> although he's been helping via email and we've never met.
>
> Here is the problem in a nutshell. The dial drum with the band markings on 
> it does not track the band switch. To elaborate, when the dial drum is set 
> to properly display on the lowest band, whenever I rotate the band switch, 
> the display rotates 1/8th of an inch more than it should. This results in 
> the display being seriously out of sync with the band switch position.
>
> Also the actual band switch seems to be rotating slightly more than it 
> should with each detent of the band switch knob. (Are you confused yet? I 
> certainly am!)
>
> We've checked the size of the dial drum and it's the proper size. It seems 
> that the knob is rotating very slightly more than it should.
>
> I suspect that this is one of those problems that will only solved by the 
> only other person in the world who also experienced it and found the 
> solution. Don't let that stop you from having a go at it.  :>)
>
> If you're up to the challenge, and many won't be, let me know what you need 
> to know and I'll be happy to give you whatever information I can.
>
> 73,
> Brian Jeffrey
> WWW.VE3UU.com
> Brian at VE3UU.com 
>   
>