OK Mal
What actually is the challenge then?
Just to make an RX using a razor blade as the guys in Coldiz did?
An Rx to receive AM broadcast stations on the Medium wave or Long wave BC bands?
I think that RX has been described previously in these exchanges.
Or are you asking for one to be actually made and demonstrated?
Or do you just want a shopping list of things to be stolen of their captors to make the RX? Together with a technical description of how the whole thing works?
Shopping list like:- Razor blade, wire, telephone earpiece, pencil, safety pin, sliver paper for cap etc? But in more detail, the razor blade being a bit of a Red Herring because most oxides on metal surfaces will exhibit a none linear conduction characteristic required for AC rectification e.g the rusty nail effect beloved by the old C&G RAE..
Or have you got a "Smart Alec" solution?
Please specify!
From: mal hamilton <[email protected]>
Subject: Re: LF: Razor blade RX
To: [email protected]
Date: Wednesday, 7 January, 2009, 11:38 AM
Please answer the question. I did not ask if it could be used on 500 at
present., but if so one would TX using MCW or Keyed Tone and old spy tric.
g3kev
----- Original Message -----
From: "Rik Strobbe" <[email protected]>
To: <[email protected]>
Sent: Tuesday, January 06, 2009 9:53 PM
Subject: Re: LF: Razor blade RX
> Mal,
>
> I did build a "crystal radio" with a razor blade as detector
when I
> was 14 years old.
> It had to be rusty to work properly and even then it was a very poor
> detector.
> And it is an AM detector, so not useable for ham signals on 500kHz.
>
> 73, Rik ON7YD - OR7T
>
>
> Quoting mal hamilton <[email protected]>:
>
>> Since I mentioned a Razor blade and fence wire RX a while back I
>> have had several requests for a circuit. To give others the
>> opportunity to submit a cct I will await replies. This method was
>> used successfully at Coldiz and other POW camps to receive BBC
>> broadcasts.
>> Let us know how you would approach the subject. This is applicable
>> to MF/LF since the broadcasts at the time were receicved on these
>> bands.
>> Build one and have a QSO using this RX
>> g3kev
>>
>
>
>
> Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
>
>
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5:16 PM
