Red River Radio Amateurs

The international reply coupon enters the history books

15 December (Berne, Switzerland) — Since its introduction on 1 October 1907, the international reply coupon (IRC) has accompanied generations of correspondents, travellers and collectors across the world. Serving as a truly universal paper currency, it enables the holder to pay for postage of an unregistered international airmail letter between the UPU’s 192 member countries. For almost 120 years and across 10 successive models, the IRC has embodied the values of universality, fairness and solidarity upon which the universal postal service is founded.

If you want to truly level up your HF station, you can’t rely on luck, power, or wishful thinking. HF success comes from understanding how every part of your station works together. In this video, we break down the Five Pillars of HF Operation — the core fundamentals every HF operator should master to work more DX, improve signal quality, and get more out of the bands.

Whether you’re a new General class or a seasoned HF veteran, this guide will help you understand the why behind the what of HF radio.