Etherwave plus zero beet's at arm length at (9) o' clock

Hell to all

I left my theremin on over night & when i came to play it the day after i found that its tuning was different

Before i was tuning zero beet at arms length between (11 to 12 o' clock) & now for zero beet at arms length im tuning the pitch at around 9 o' clock

I don't know if this has anything to do with leaving it on & i don't want to mess around yet & retune with L6 until i get a diagnosis of the issue

NOTE: I have never trimmed  the inductors   

Help Please

Joseph 

Hi Joseph,

It might just be thermal drift, ferrite-based inductors are rather notorious for that.  Do you notice the tuning needing touching up from when you first turn it on to later on?

Hello Dewster,

Thank you for you're reply

No, i need to tune too (9) o' clock every time i turn the theremin on & it stays like that when warmed up

Thanks again 

Joseph

Joseph, has anything in the immediate physical playing environment changed?  Is the temperature or humidity in the room some how different?  If not, I'm not sure what's going on.  The EW should be fairly stable otherwise.  How old is your EW?

Hi Dewster

No, nothing has changed & it is stable, just at a different setting (9 O' Clock). my EW is only a few months old

Im wondering if it needs a retune (conductor L6). hope to be getting more feedback soon

Blessings 

Joseph

Hi to all

I fixed the issue by slightly turning inductor L6

Best Regards

Joseph

Sorry, didn't see that earlier...

Yes, slightly turning L6 was the correct procedure! :)