Upcoming KPH Enigma Transmission (Aug 30, 2025)

[Jon Nall]

Hi all,

The Maritime Radio Historical Society has sent out an Enigma transmission the last few years and it's a lot of fun. In fact I bought my Enigma Touch largely to aid decoding this year's transmission.

Detailed information about this year's event is now available. See this link for details.

If you don't have a radio that can receive the transmission or are in a location where you can't hear the KPH signal, you might try listening to one of the many KiwiSDR public stations.

Enjoy!

nall. 

[Jürgen]

Very nice, thank you for sharing! 

Being based in Europe, probably the "receive CW from California" part will be the biggest hurdle for me. I am a licensed ham but have not been QRV for years -- my starting point will be to rig up a wire in the garden, I guess... Found the frequency list for KPH at https://www.radiomarine.org/mrhs-operations. I reckon that 17 MHz or 12.8 MHz would be my best bets? Any recommendations from active hams are appreciated!

What I didn't find on the MRHS website is an indication of the CW speed used for the transmission. This would be good to know to figure out whether I stand a chance to read it myself, or whether I should think about a decoder (or focus on the RTTY transmission). Did I overlook that detail on the website, or is it known from prior MRHS Enigma events?

I am tempted to get the E311 receiver out, to properly receive this with tubes!

Cheers, Jürgen

[Ronald Wells]

Thanks for sharing!

[Jon Nall]

Jürgen,

I would think the frequencies you mention are your best shot at receiving the signal locally. If receiving locally is too daunting, do look into KiwiSDR as you can stream a receiver closer to California via the web.

I don't know the exact speed of the transmission in previous years, but I seem to recall it was in the 20wpm realm.

Love the idea of receiving on the E311!

73,

nall. 

[Jon Nall]

Just a reminder that this is tomorrow (for me) August 30 at 2000 GMT for those interested!

https://www.radiomarine.org/mrhs-events

The KiwiSDR site can be used to listen to the broadcast and tonight I realized it even has a CW decoder if your copy skills have lapsed! I can't speak as to the quality of the decoder.

Good luck if you make the attempt!

73,

nall.