[HAM] Bad generator pickup coil

[Mike Kearney]

Just wanted to report back that after I got the Heathkit Audio Generator 
cleaned up and working, I had no problem dialing in my
missing tone 51 (approx 587 Hz).  I attached the ground clip to the tone 
generator chassis and the output clip to the output of coil
51. I dialed in the volume to match the other notes on the keyboard and 
now the D5 key sounds just perfect.

The Audio generator warms up in about the same time as the organ, so if 
I turn the Audio Generator on first, it's ready to go when
the organ amp is up. It doesn't drift over time, unlike the tube 
Theremin I built recently and it's very stable. Puts off a lot of heat 
though.

I'm also looking at a simple circuit based on the XR-2206 chip, but this 
is working fine for now.

Regards,
Mike         



Keith H Clark wrote:
> It won't do it with reliabililty and stability.
>
> -----Original Message-----
> From: hammond-bounces at zeni.net [mailto:hammond-bounces at zeni.net] On Behalf
> Of Mike Kearney
> Sent: Monday, March 03, 2008 7:30 PM
> To: The Hammond Forum
> Subject: Re: [HAM] Bad generator pickup coil
>
> Scott and Rick, thanks for the news. It isn't good news, but I 
> appreciate the honesty.
>
> I'll check the lead wire from the generator. Maybe it's shorting on the 
> frame. But I'm not usually that lucky.
>
> I have a Heathkit Audio Generator (IG-72, tube type) that I'm recapping, 
> that I recently bought at a hamfest for $20. I'm going to try it and see 
> if it will do the job for the one tone I'm missing. But if it doesn't, 
> I'll probably go with the GNR-1A.    
>
> Thanks again.
>
> Regards,
> Mike
>
>
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