[Milsurplus] LO radiation

[J. Forster]

VERY interesting. Your post confirms a couple of conclusions that have been
reached on this list lately:

First, the detection range is of the order of a few to a few tens of miles.
i.e.: not really useful for searching wide areas.

Second, searching for LO radiation was of little real tactical use.

Third, as a result of the previous two, DFing was likely part of a
disinformation campaign, whether official or not.

Thanks,
-John



Richard Brunner wrote:

> Re:
> >> Any specs on the Metox?
>
> Metox-Empfänger R-600, 113-484 MHz. to counter the ASV Mark II radar at 200
> ± 15 MHz.  When traversing the Golf von Biskaya they were being surprised on
> the surface at night with no warning from the R-600, because the Brits had
> gone to the ASV Mark III radar at approx 3000 MHz.  A centimeter radar was
> recovered from a wreck the night of 2-3 Februar 1943 bei Rotterdam and all
> was made clear.  Before that they were concerned that the Metox might be
> radiating, as it had no rf stage.  They conducted tests with a plane, and
> found it did indeed radiate and could be detected in 12 sea miles at 500M
> altitude, 18 sea miles at 1000M, and 25 sea miles at 2000M altitude.  On
> this basis they pulled them from service. (Which in hindsight didn't matter
> as no-one was listening for them.)
>
> Referenz: "Funkpeilung als alliierte Waffe gegen deutsche U-Boote
> 1939-1945,"  Arthur O. Bauer, 1997
> (Radio direction-finding by allied forces against German U-Boats 1939-1945)
>
> Grüß Gott
> Richard Brunner, AA1P