[ARC5] Scott SLRM
Richard Knoppow
1oldlens1 at ix.netcom.com
Wed Sep 11 18:21:54 EDT 2019
It seems to me the BBC had trucks that drove around listening
for radiation from unlicensed radios.
There is something to be said for TRF sets.
On 9/11/2019 2:40 PM, Bart Lee wrote:
> According to Peter Wright in /Spycatcher/, MI-5 determined the
> frequency of covert transmissions into England by driving around
> detecting LO emissions from the spy's short wave radios. Ah,
> those were the days!
>
> 73
>
> ##
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> Bart Lee
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> On Wed, Sep 11, 2019 at 7:43 AM Robert Eleazer
> <releazer at earthlink.net <mailto:releazer at earthlink.net>> wrote:
>
> __
> Speaking of detecting LO's, I understand that there are
> listening devices located next to major freeways that listen
> for LO's to determine which radio stations the passing cars
> radios are tuned to.
> Wayne
> WB5WSV
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--
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL
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