QZJ

Radio communication in crisis and war
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032 C4ISR Stories: Communications - The Cross-Country Link

2025-08-23 QZJ SA6MWA

In this episode of C4ISR Stories, we dive into the world of communications with The Cross-Country Link. As two pairs of friends embark on a ski trip across treacherous terrain, they rely on handheld VHF radios to navigate challenges and maintain their connection amidst a blizzard. Experience the precision of structured communication as they face binding failures and worsening weather, demonstrating the critical role of clear and disciplined radio procedures. Join me as we explore the importance of command and control in both civilian and military contexts, highlighting how effective communication can turn chaos into coordination. Tune in for valuable lessons on navigation, decision-making, and the art of staying connected when the stakes are high.

Full transcript

Welcome to Quebec Zulu Juliett. This is episode two in the six-part mini-series about C4ISR. Today we cover the third C: Communications.

The story is called The Cross-Country Link.

(intro music)

The plan was simple: two pairs of friends on cross-country skis would set out from opposite trailheads, meet at a cabin on the high plateau, and return before dusk.

Anna and Marcus clipped hand‑held VHF transceivers to their chest straps. Tom and Leila did the same on the far side. The radios were tuned to a shared channel, callsigns assigned.

At the trailhead, Marcus keyed his radio. “Alpha One, Alpha One, this is Bravo One, radio check, over.”

A pause, then Tom’s reply, thin but clear. “Bravo One, this is Alpha One. I read you five, over.”

Marcus smiled. “Bravo One, roger, out.”

To anyone listening in, it might have sounded overly formal for a ski trip. However, the Allied Communications Publication 125 — ACP-125 — provided two key advantages: clarity and consistency. Everyone knew when a message concluded, conserving battery life, and with short, disciplined transmissions, they also minimized their radio footprint. This effectively served as a predecessor to LPD and LPI, which refer to low probability of detection and interception for more advanced waveforms than these handhelds could support. While it may seem trivial in a civilian context, it also reduced the risk of attracting curious visitors to their network.

The morning was bright. Anna led their pair through frozen birch stands, compass needle steady. They skied mostly in silence, letting the radios carry what voices could not.

At 10:30 Marcus transmitted. “Alpha One, this is Bravo One. SITREP. Location grid three four Tango Echo. Time one zero three zero. Progress slower than planned — deep snow. Over.”

Tom’s voice came back, breath audible. “Bravo One, this is Alpha One. Roger your grid three four Tango Echo, time one zero three zero. Our position grid three five Tango Delta, time one zero three one. Progress steady, over.”

“Bravo One, roger. Next report eleven hundred. Out.”

The hiss returned, but now both pairs carried the same map in their minds.

Around noon, clouds built faster than forecast. Wind spat snow sideways. The plateau blurred into a moving white sheet.

Anna keyed her radio. “Alpha One, this is Bravo One. Weather report: visibility decreasing, snow beginning. Recommend shorten reporting interval, over.”

Tom answered with static swirling around his words. “Bravo One, this is Alpha One. Roger. Interval one five minutes until cabin link‑up, over.”

“Bravo One, roger, out.”

The discipline of words mattered more as vision failed. Skiing blind was dangerous enough; skiing blind without a shared picture was worse.

Marcus and Anna pushed hard, reached the cabin just as the storm thickened, and stamped snow from their boots. According to the 15‑minute schedule, Alpha One should have checked in at 12:30. The radio was silent.

Marcus checked his watch, then the radio. “Probably conserving battery. Let’s wait for the 12:45 call.”

Snow rattled against the windows. The silence stretched. Then, at 12:45, the radio-set crackled alive. Leila’s voice came through, tense.

“Bravo One, this is Alpha One, message. Tom has binding failure. I say again, binding failure. We are halted in wind break, grid three five Tango Foxtrot. Weather deteriorating. Over.”

Marcus keyed the radio, calm. “Alpha One, this is Bravo One. Message received. We are secure at cabin, grid three five Tango Hotel. Maintain shelter. Will monitor. Reporting interval one five minutes. Over.”

“Alpha One, roger, out.”

Anna exhaled. “That explains the silence. Binding break, soft snow, and now the storm.”

Through the early afternoon the radio kept their worlds connected.

Tom and Leila reported from their snow pit: skis had carved out a shallow trench, snow blocks stacked as a wall, bivvy tarp stretched tight. The broken binding leaned against the drift like dead weight. The reports were brief but steady: “Bravo One, this is Alpha One. Shelter holding. Both secure. Over.”

Anna and Marcus stayed inside the cabin, dry but alert, watching the clock and the wall of white. They kept the 15‑minute schedule, logged Alpha One’s status, and waited for a safe window. Moving blind in peak wind would only multiply the problem.

By 14:30, the wind had eased — still a whiteout, but the intensity had diminished. This was their opportunity. Anna made her decision while reviewing the map.

“We know our bearings and can navigate blindly with a compass while counting strides. If we need to deviate from the bearing to Alpha One’s bivvy, we will maneuver around any obstacles by boxing. We’ll move 90 degrees away from the obstacle while recording our strides, then turn 90 degrees in the opposite direction to bypass it. After we’ve passed the obstacle, we’ll turn 90 degrees again to retrace our recorded strides, and finally, turn 90 degrees in the opposite direction to return to our original bearing. You copy?”

Marcus scratched his forehead briefly. “Alright, the boxing method — I’ve only practiced this in land navigation training, not in these conditions, but I know you are more experienced here. I’m in.”

Anna stood tall, radiating determination as she sealed the decision: “Let’s go bring them in.”

They stepped into the white, radios crackling lifelines.

“Alpha One, this is Bravo One. Departing cabin, bearing one one niner. Coming for you. Time one fower fower fife. Over.”

Leila answered, voice muffled but steady. “Bravo One, this is Alpha One. Roger. Holding position. Over.”

“Bravo One, roger, out.”

As the terrain forced adjustments — skirting a pine stand, crossing a shallow gully, detouring around knee-deep drifts—Anna recorded each change on waxed paper in her waterproof notebook: new compass bearing, stride count to mark distance, and a short terrain note. Every 15 minutes, Marcus transmitted a position update to Tom and Leila, ensuring the two maps converged.

At last, shapes emerged through the haze: two figures crouched behind a wall of snow blocks. Tom waved, one ski slung uselessly on his pack. Relief spread like warmth.

In the bivvy, Anna poured hot coffee. Marcus pulled out his repair kit — straps, tape, even a spare tent peg. With Leila steadying the ski, he lashed the broken binding back into shape.

Tom clipped in cautiously, pushed forward a meter, then nodded. “She’ll limp. Good enough.”

They essentially backtracked the list of bearnings and stride counts Anna had recorded on the waxed paper log. Reciprocal bearings, 180 degrees from each outbound leg, and the same stride counts in reverse.

Together, the four moved with deliberate strides through the whiteout. As the fastest skier, Marcus provided rear security in front of Tom and Leila, who were exhausted from their efforts and bivouacing. Anna led the way, navigating with compass and log, carefully backtracking to the cabin.

At 15:20 the cabin loomed from the snow like a ship from fog. All four stumbled inside, grinning with relief.

They turned off their radios and placed them on the table, antennas dangling. Just tools — yet tools that had conveyed purpose and control through weather, distance, and adversity.

That concludes The Cross-Country Link — a narrative about communications, or C3: command, control, and communications. C3 emerged as a concept in the mid-20th century, particularly during the Korean War in the early 1950s. It evolved primarily in response to the complexities of modern warfare and the need for coordinated military operations.

Now to the After Action Review.

After Action Review (AAR)

1) What was supposed to happen?

Two pairs were to ski from opposite trailheads, meet at the cabin by early afternoon, and return before dusk.

2) What actually happened?

Weather worsened earlier than forecast. One ski binding failed, forcing Alpha One to halt and bivouac. Their 12:30 check‑in was missed, raising concern until they transmitted at 12:45 with a SITREP. Bravo One waited for the storm to ease, then navigated by compass, recorded bearings and stride counts during the rescue ski, linked up, effected a field repair, and used the reciprocal of the logged legs to backtrack all four safely to the cabin.

3) Why did it happen?

  • Radios extended communication beyond line of sight.
  • ACP‑125 procedure eliminated ambiguity.
  • Shared check‑in intervals provided rhythm and accountability, making a missed report immediately noticeable.
  • Alpha One’s decision to hold position prevented compounding the problem.
  • Bravo One used disciplined land navigation — bearings, stride counts, terrain notes — recorded in real time to manage the whiteout.
  • Field repair and reciprocal backtracking enabled a controlled return.

4) What did we learn?

  • Clear procedure prevents misinterpretation under stress.
  • A missed report is itself information — silence signals a problem.
  • Radios are lifelines, not chatter.
  • Recording bearings and stride counts during movement transforms guesswork into certainty.
  • Sometimes the right call is to stay put until help can find you.
  • In both civilian and military contexts, communication is the thread that keeps command and control alive.

The takeaway of this episode is simple: clarity beats chatter. Brevity, correct prowords, and disciplined timing turned static into coordination.

Up next: Computers — not as mere curiosity, but as essential decision-support tools. You’ve been listening to Quebec Zulu Juliett. Until next time: stay safe, stay prepared and stay curious. This is Mike. Out.