[600MRG] restoring old crystals ??

[Kenneth G. Gordon]

On 5 Feb 2013 at 23:25, Dave wrote:

> I had good success with "gritty" toothpaste....the "gel" version is
> useless
> 
> Managed to get an ft243 455kHz crystal up to 474 khz over christmas
> 
> Dave
> 
> Ww2r/5

I have some real grinding compound which crystal manufacturers used to 
use. It work TONS better than Bon Ami (which is still available) or gritty 
toothpaste. The tootpaste can be used for the final "polish" though.

Ken W7EKB