[Boatanchors] NC-300 Band Switch problem

[Rodger]

Brian,

I have had similar problems with the dial drums on Heathkit Apaches and 
Mohawks.  There is a little spring (sort of a baby brother to a clock 
mainspring) that supplies the correct tension and if it is set wrong the 
drum gets out of sync.  I have had to loosen the clamp that holds the 
spring to the drum and rotate it a couple of turns to add more tension 
and then it stays in sync.  So far my NC-300 hasn't had that problem and 
I think it generally occurs when someone removes or re-strings the drum 
mechanism and doesn't get the tension set correctly again.  My NC-400 
uses a different spring and arm mechanism for the indicators on the main 
and bandspread ranges and it was a major pain to get everything adjusted 
properly.  Hopefully your NC-300 won't be that difficult!

Hope this helps.

73, Rodger WQ9E

Brian/VE3UU wrote:
> Gentleman:
>
> I have a NC-300 with an unusual problem. When switching bands, the 
> display get out of sync with the band setting. The drum appears to be 
> turning a greater distance than it should and the display become 
> incorrect quite quickly. Is there anyone who has experience with the 
> NC-300 or NC-303 band switching arrangement that can assist me?
>
> Thanks.
>
> 73,
> Brian Jeffrey
> WWW.VE3UU.com
>
> _______________________________________________
>
>