Re: Questions About Construction Of The Australian MysteryCrystal Set


"Don Bowey" <dbowey@xxxxxxxxxxx> wrote in message
news:C3FBEB75.B1D97%dbowey@xxxxxxxxxxxxxx
On 3/11/08 5:15 AM, in article 91512$47d674c2$18d6b40c$1163@xxxxxxxxxxx,
"amdx" <amdx@xxxxxxxxxxx> wrote:


"Dave.H" <the1930s@xxxxxxxxxxxxxx> wrote in message
news:039c2b9f-720f-49b2-ac76-3aada2bf0309@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Mar 11, 6:05 am, "amdx" <a...@xxxxxxxxxxx> wrote:

*and what's this stuff about a D cell on a crystal radio :-)

I got the idea from one of Dave Schmarder's radios, #26

http://www.schmarder.com/radios/crystal/26.htm

Hi Dave,
My point was, the purists would shudder at the thought of an external
power source on a crystal radio. Now if you extract the power from a
strong
local and use that to amplify a weak signal then your doing good work.
Mike



The tube isn't being used as an amplifier, it's diode is used as a
switchable option to a SS diode. The battery is for it's filament.

Ok then, the purists would shudder at the thought of an external
power source on a crystal radio. Now if you extract the power from a strong
local and use that to bias your diode then your doing good work.
Gees Don, your acting like Phil but without the name calling :-)
Mike





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