Re: Steerable antenna anyone?


Kriss, those two recordings are an OTHR, this is my local one nicknamed Pluto II from Akrotiri in Cyprus. It's about 3000KM from me and the associated ionosonde makes a useful indicator of the F2 MUF. It's very common to see the OTHR sitting right at the point the ionosonde signal fades out and it moves frequency following the MUF. It tends to sit where it wants with no regard for other users or allocations. The attached jpg I made demonstrating ISM squiggles on 27MHz shows the two signals of the Cyprus ionosonde fading at the top end of 10M and two OTHR signals can be seen around that frequency.

I've just made a recording of it showing how it sounds both in AM and USB.


RX-888 MKII, Elad FDM-S3, RTLSDR820.
Icom ICR8500, SDRPlay RSP1A, A*rspy.
HS Publications D100 TV-DX receiver.
Sony XDR F1, TEF6686 tuner, XDR-GTK.
LNA4ALL, SV1AFN & CCW Multicouplers.
W4KMA 17-100MHz custom Log Periodic.
Wellbrook ALA1530AL1 active HF loop.
Korner 19ele BII, Korner 19ele BIII.

24 hour digimode log

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