Recently I posted about reception of Mongoliin Radio 1 on two of its three longwave frequencies, including the rarely heard 227 kHz, which would normally be swamped by my "local" station on 225. Now, the 3rd frequency had also made it to Poland!

As a reminder, Mongolian National Broadcaster's flagship radio station uses 5 LW transmitters across the country, four of them are listed as 75 kW or less, while Ulaanbataar on 164 kHz is believed to operate at 500 kW. However, whenever I checked various SDRs in the region, the strongest transmitter was actually the weakest received. Hope it's doing better on groundwave...

All Mongolian LW transmitters operate on frequencies according to old and long invalid Copenhagen frequency raster of 1948, under which most of the longwave channels were alotted to frequencies that, when divided by 9, give a remainder of 2. For some reason, Mongolia has never adhered to Geneva 1975 plan, hence the use of e.g. 227 kHz while Poland is on 225.

By the way, I've made a small equipment upgrade since my last video of Mongolia. I've extended my Conti SuperLoop by 4.5m so its dimensions are now 12m x 3m. This seems to match the fixed 1kOhm resistor I have a lot better, especially on MW, but it seems it brought some improvement in LW reception as well. Its direction hasn't changed, however, and it's still 110deg while Mongolia is at ~65deg bearing.

Received at 22:20 UTC Oct 3rd, 2021 in NE Poland using an Airspy HF+ Discovery & 12x3m Conti SuperLoop w/ 1kOhm termination.

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