How about a hint. Are the tubes triodes, tetrodes, pentodes, BPT?
On 2014-03-06 12:15 PM, <odysseyslipw...@aol.com> wrote:

>  well, i know it's not part of the old short wave out in my
> garage.........
>
> a selectable power supply of some sort?
>
> you said that one thing there near the middle isn't any kind of a tuner?
>
>  In a message dated 3/6/2014 8:58:24 A.M. Eastern Standard Time,
> frank.pitte...@gmail.com writes:
>
> Bzzzzzzzz ... wrong answer.
>
> The copper coffee bean roaster contains a set of four, multi-tap
> fratistans that are wired to an eight-way rotary switch on the front panel,
> as shown in the attached photo.  Quite a simple device consisting of 4
> fratistans, 2 tubes, 1 BAVC (big ass variable capacitor), 1 BAVR (big ass
> variable resistor), 1 transformer, a couple on-off switches and a couple
> small resistors.
>
> On Wednesday, March 5, 2014 8:09:26 PM UTC-5, Mike Lyons wrote:
>>
>> That big copper can gives it away.
>> It's a sonic resonant coffee bean roaster.
>> This is how we made coffee before Starbucks.
>>
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