Many thanks to SWLing Post contributor, Peter Wilson, who shares the following guest post and recordings from his listening post in Botswana:
MWDX from Australia and the USA received in Botswana
by Peter Wilson
I moved my 16.2 metre random wire slightly farther away from the house, and installed a binocular balun and connected 20m of RG58 at the far end, not the “house end”.
1500 USA WFED Washington DC 12790km
1152 AUS 6PB
ABC NewsRadio Busselton 8469km with ABC News ID
1600 B Radio Nove de Julho ID 7234km
Sao Paulo. Brazil. ID,
Web Address and jingle. Rinsed and repeated.
Portuguese: Radio Nove de Julho [English: Radio 9th July]
1026 kHz MOZ Emissor Provincial de Manica Chimoio 1057km.
A bit parochial but features the radio Mozambique song.
850 USA WTAR Norfolk, Virginia Fox Sports Radio ID 12700km
1296 6RN ABC Radio National. Wagin, Australia 10kW 8644km
558 AUS 6WA ABC Great Southern WA Wagin 8644km
Impressive reception from your home in Botswana! Thank you so much for sharing these recordings, Peter. You’ve certainly made the most of your random wire antenna!
Thanks Andrew J.
Thanks Egil for explaining. The only difference is I used cable ties to fasten the two ferrites together.
Guest Post Author
That’s some spectacular results for a random wire, particularly such a short one!
Guest Post Author
Interesting clippings. But what on earth is a binocular balun? The photo is not very explanatory.
A “binocular balun” is wound on a ferrite core with two holes. Looks like a binocular.
The balun shown in the picture looks similar to what I use here. I made mine by taping two ferrites (of the kind used for noise reduction by clamping them around power cords). Have no idea what ferrite material they are made of. But the final balun helped me get rid of most of the pulse noise generated by in-house power supplies. (TV sets, computers, phone chargers e.t.c.)
Egil – LA2PJ
Thanks Egil for your explanation which I was late reading. I will try with my 18m inverted-L which already gives me good results with a Wellbrook balun (unfortunately not sold anymore). And thank you Peter. I can see the cable ties in your photo. MW DX is really a lot of fun!