I'm NO designer. Just to make that clear. But I wondered why the G had the extension and not the l. I assumed it was a 'first initial' thing, but to me it would have looked more balanced if it was the first and last letters. Then the extension wouldn't have tapered and the frequency would be able to go under the whole logo, instead of stopping at the G.
I never cared enough to comment (before now, obviously - though I wouldn't have said anything if you hadn't started it
) and I'm certainly NOT suggesting it should be changed.