I can confirm your antipode DX experience(s).
I use my qth in Eastern Thailand a couple of months per year. The calculated antipode location of my qth is close to Lima, Peru.
1. daily window to 60 mB Peruvians around 1100/2300 UT year round, best in Feb./March.
2. The maximum lasts up to 30 minutes with extraordinary signal level.
3. Still unclear: The diameter of this antipode spot, I expect not more than 300-500 km.
4. Seems to work excellent on 60m, tried mediumwave without success so far.
As Wolfgang mentioned the couple New Zealand <--> Central/Western Europe has been observed often.
The antipode location of most of "us" is in the middle of nowhere, where is no AM tx.
Example Radio Quillabamba 5025 kHz, rec. in THL, Perseus SDR + EWE:
Deine Nachricht von Freitag, 11. November 2022 23:51 Uhr Weltzeit (UT) lautete:
> Here's an example of what I've experienced. First, back in the early
> 1980s, during the height of the Cold War, my wife and I spent 6 weeks in
> New Zealand. All I brought along was a tiny analogue Sony SW portable.
> With only the whip, Radio Liberty came booming in, at local level. That
> was a head-scratcher, as back in Canada, it was a real DX target, and
> always battling Soviet jamming. There wasn't a hint of the latter in New
> Zealand. Poking around a globe, I realized that all signals from Spain
> (the former site of most of the RL transmitters to the FSU were located)
> were heading towards me at the antipode in New Zealand. Another example
> was in Maui. In the late afternoon, Radio Botswana on 60 meters would be
> very well heard with a simple length of wire. Again, the Hawaiian Islands
> are approximately antipodal to that region of southern Africa. 73, Walt
> On Fri, Nov 11, 2022 at 10:28 AM Wolfgang Bueschel <email@example.com>
>> ----- Original Message -----
>> *From:* Stuart Heathcock <firstname.lastname@example.org>
>> *To:* email@example.com
>> *Sent:* Friday, November 11, 2022 12:39 PM
>> *Subject:* Re: [bdxc-news] RNZ Pacific schedule change today
>> NZ is antipodal from UK isn’t it?
>> On 11 Nov 2022, at 10:28, Peter Jones <firstname.lastname@example.org> wrote:
>> I've always wondered why is RNZ such an easy catch in the UK? My simple
>> mind would expect it to be impossible. Is it the raw power, or some strange
>> mega treble bounce? Thanks
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