Re: [IRCA] Technical Review: CCrane CCRadio-EP AM/FM AnalogPortable Radio

["Steve Ratzlaff" <steveratz@xxxxxxxxxxxx>]

Hi George,
The EP radio doesn't use anything associated with the Twin Coil Ferrite 
Antenna in the actual radio--just the reference in its literature that it 
does. I attempted to point that out in my review and is one of the reasons 
why I did the review. The Twin Coil Ferrite Antenna works well--I have a 
couple of them, and have taken one apart in the past and compared it with 
the patent info. But that antenna concept wasn't used in the EP.
Steve

----- Original Message ----- 
From: "george magiros" <submodd@xxxxxxxxx>
To: "Mailing list for the International Radio Club of America" 
<irca@xxxxxxxxxxxxxxxx>
Sent: Wednesday, May 25, 2011 7:04 PM
Subject: Re: [IRCA] Technical Review: CCrane CCRadio-EP AM/FM AnalogPortable 
Radio (loopstick Litz)


> I do like his patent for the twin coil.  Very readable and he even goes 
> into
> the design of his preamp.  Going by your description of the radio it 
> sounds
> like it uses the circuit in figure 7 so it can use a varactor to tune.
> Figure 4 is I guess the more pure version of the antenna circuit with a
> variable capacitor.  http://www.google.com/patents/about?id=h4EOAAAAEBAJ
> George

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