Aart At Radio Delta AM, we believe that shortwave radio works best when it has rhythm, recognition, and a strong connection with its listeners. Over the past months, we’ve carefully reviewed how our programmes flow, how listeners tune in, and how reception conditions affect the listening experience.
Based on that, we’re happy to announce that Radio Delta AM will soon start broadcasting with a new Master Hour format, also known as the MU.
What Is the Master Hour?
The Master Hour is the backbone of every Radio Delta AM broadcast. It defines how each hour is structured, from the first station identification to the last listener voice before the next hour begins.
With the new MU format, every hour follows a clear and recognisable structure. This makes it easier for listeners — especially shortwave and DX listeners — to know what to expect, even when tuning in halfway through an hour or listening under changing propagation conditions.
What Can Listeners Expect?
Each Master Hour begins with a clear station opening, followed by Radio Delta News at the top of the hour. This news block includes:
•current frequencies in use
•shortwave and propagation information
•listener reception reports from around the world
Music remains at the heart of Radio Delta AM. The MU format is built around long, uninterrupted music blocks featuring Five Decades of Music, combined with special items such as The Record and Its Story and Radio Stories.
A fixed part of every hour is Pure Dutch — one Dutch pop classic and one true pirate record. This segment highlights Dutch radio culture and gives Radio Delta AM a sound you won’t hear anywhere else on shortwave.
Listener voices are an essential element of the MU. Reception reports sent in via our website regularly return on the air, making listeners part of the programme itself.
Sometimes the MU Goes Full DX
While the Master Hour has a fixed structure, it is also flexible. On certain days or during special conditions, Radio Delta AM deliberately shifts the focus of the MU towards DX listening.
During these DX-oriented hours, you may hear:
•more detailed propagation and band information
•extra station identification for easier logging
•additional listener reception reports with technical details
•a slightly calmer pace, optimised for long-distance reception
This means the MU remains recognisable, but adapts to the moment — whether we’re focusing on music flow or reaching as far as possible on shortwave.
Recognition Every Hour
One of the key ideas behind the Master Hour is recognition. Every hour starts and ends with the same clear identity: Radio Delta AM, its music, its stories, and its listeners.
This consistency helps shortwave listeners identify the station quickly, supports accurate logging and QSL requests, and creates a calm and enjoyable listening experience.
Reception Reports and eQSL
Listeners who would like to receive a Radio Delta AM eQSL are invited to send their reception reports via our website at radiodelta.am, under the tab
Reception Reports
Reports that include date, UTC time, frequency, reception quality, and a short personal remark are especially appreciated and may be featured in future broadcasts.
When Will the New MU Start?
The new Master Hour format will be introduced very soon and will gradually become the standard structure for all Radio Delta AM broadcasts.
We’ll keep you informed via our website and on the air as the rollout begins.
Long Live Shortwave Radio
With the new Master Hour format, Radio Delta AM continues to build a listening experience that is recognisable, flexible, and community-driven — sometimes music-focused, sometimes DX-focused, but always true to shortwave radio.
About The Author
Hello Radi Delta team,
that sounds very interesting and very helpful. Great service. Many thanks.
Regards, Dieter