“Please stay close, I can’t hear you if you’re more than 3 meters away!”
That’s the most common guide shout on İstiklal Avenue in Istanbul. Tens of thousands of tourists flood the street every day—street musicians, kebab stalls, tram bells all blend into a wall of noise. Hakan Yılmaz, Operations Director at Mara Tourism, spent the last five years leading European retirement groups along this route. His biggest fear? Losing people—guests wandering off, missing the commentary, or standing in line at a kebab shop with no idea what the guide was saying.
“We tried walkie-talkies, but they were useless on İstiklal. With a group of 30, by the time you’re in the middle of the street, three meters away it’s pure static. Guests complained it sounded like ‘a thunderstorm inside a radio’,” Hakan said during the early May product selection meeting.
Then came May 2026. Mara Tourism partnered with Richitek for the first time, deploying the Wireless Tour Guide System—specifically the RC2501 wireless tour guide transmitter paired with the RC085 secondary transmitter—to host a 30-person European retiree group on a 5-day deep tour. The result? Guest feedback written in their own words: “The best tour in my life, I can hear the guide like he's standing next to me.”
This isn’t an ad. It’s a real client case from Istanbul’s historic districts. Below, we break down exactly how Mara Tourism used a 1+1 dual-transmitter combo to completely eliminate “listening anxiety” for a 30-person group.
🏆 Client Profile: Mara Tourism – 12 Years Specializing in European Retiree Deep Tours
Mara Tourism is a licensed Istanbul-based travel agency with 12 years of experience, headquartered in the Fatih district, a 10-minute walk from Topkapı Palace.
Core clientele: European retirees (55–75 years old) from Germany, France, Italy, and Switzerland.
Group size: Previously averaged 15 people per group because “more than 15, the guide’s voice gives out and guests can’t hear.”
Acquisition channels: 60% from TripAdvisor repeat bookings, 30% from European travel agency partners.
Service philosophy: “We don't just show Istanbul, we make them feel it.” – Hakan Yılmaz.
This May 8–12 group of 30 was Mara Tourism’s first attempt at a “large-group deep tour.” The mix: 12 Germans, 8 French, 6 Italians, 4 Swiss. Hakan led the group personally, accompanied by Mehmet, a licensed local English-speaking guide.
Key challenge: 30 people, 5 days, covering Istanbul University, Topkapı Palace, Süleymaniye Mosque, İstiklal Avenue, Bosphorus cruise, and the Grand Bazaar. Each location had different noise levels, crowd density, and spatial layouts. Traditional walkie-talkies simply couldn’t handle it.
📡 Product Solution: 1+1 Dual Transmitter + 28 Receivers, Dual-Channel Free Switching
Mara Tourism’s final equipment configuration:
1 RC2501 transmitter (worn by Hakan, lead guide – main commentary)
1 RC085 secondary transmitter (worn by Mehmet, local guide – relay commentary at the Grand Bazaar and on the boat)
28 RC2501 receivers (covering 30 guests, excluding the two leaders)
Dual-Channel Switching Mechanism
| Channel | User | Frequency | Purpose |
|---|---|---|---|
| C-01 | Lead guide Hakan | 401 MHz | Main commentary (default for all guests) |
| C-08 | Guide Mehmet | 808 MHz | Relay commentary (Grand Bazaar, boat) |
Guests’ receivers were preset to C-01 for Hakan’s full commentary. When entering the Grand Bazaar or cruising the Bosphorus, Mehmet switched to C-08 for local details—guests simply pressed a button to swap channels.
Real-World Transmission Distance
On the most crowded stretch of İstiklal Avenue—near the SabırtAşı döner kebab shop—Hakan stood at the street corner delivering his commentary. The farthest guest was 200 meters away, standing beside the tram tracks, and could hear every word. “I didn’t even need to raise my voice. It felt like chatting in a café,” Hakan said.
Figure 1: Mara Tourism team at the main gate of Istanbul University using RC2501 equipment. Lead guide Hakan wears the transmitter; guests hold receivers.
Day 1–5 Itinerary: From University Gate to Bosphorus – Zero Hearing Loss at Every Stop
Day 1 (Fri, May 8): Istanbul University Main Gate – Ottoman Baroque “First Impression”
The first stop was the main gate of Istanbul University (İstanbul Üniversitesi Ana Kapı), a 19th-century campus entrance blending Ottoman Baroque style with intricate stone carvings and soaring arches. Hakan stood in front of the gate, using the RC2501 transmitter: “This gate was designed by the Ottoman architect Sarkis Balyan…” The 30 guests spread out within a 10-meter radius—some taking photos, others examining the stonework—but every single person could hear him clearly.
Guest photo 1: Hakan wearing the transmitter at the university gate, guests holding receivers in a semicircle. The image clearly shows the equipment in use.
Day 2 (Sat, May 9): Topkapı Palace Outer Courtyard + Süleymaniye Mosque Courtyard – Ottoman Fountains & Brickwork
Morning at Topkapı’s outer courtyard, covering the history of the harem and the imperial kitchens. Afternoon moved to the Süleymaniye Mosque courtyard, focusing on Ottoman fountains and brick craftsmanship. “The space is huge, and guests can wander freely—no more having to crowd around me,” Hakan noted. The farthest distance test: at the mosque courtyard, a guest 30 meters away near the fountain still received crystal-clear audio.
Figure 2: European tourists using RC2501 receivers at the Süleymaniye Mosque courtyard, with Ottoman fountain and brick wall in the background.
Day 3 (Sun, May 10): İstiklal Avenue + SabırtAşı Döner – Night Market Street Food Route
This was the ultimate test for the equipment. Weekend foot traffic on İstiklal exceeded 500,000—street performers, kebab stalls, tram noise all competing for attention. Hakan explained the history of Turkish döner kebab outside SabırtAşı while guests scattered across five different food stalls, queuing, photographing, and tasting. The farthest guest, 200 meters away, could still hear: “This kebab tradition came from Bursa in the 19th century.”
Guest photo 3: Guests holding receivers in front of SabırtAşı, with the rotating kebab spit and queue in the background.
Figure 3: Guests using RC2501 receivers at the SabırtAşı döner stall on İstiklal Avenue, night market street food scene in the background.
Day 4 (Mon, May 11): Bosphorus Cruise – Dual-Channel Relay in Action
On the boat, Mehmet wore the RC085 secondary transmitter, switched to C-08, and took over the commentary on landmarks: Dolmabahçe Palace, Rumeli Fortress, Maiden’s Tower. “Wind on the boat used to force guides to shout from the bow. Now Mehmet sits inside the cabin, speaking at a normal volume, and guests on the deck in the breeze can hear perfectly,” Hakan said. Guests could freely choose: listen to Hakan’s broad historical overview or switch to C-08 for Mehmet’s architectural deep dive.
Day 5 (Tue, May 12): Grand Bazaar Farewell & Airport Transfer – 30-Person Group, Zero Stragglers
The final day at the Grand Bazaar (Kapalıçarşı)—over 4,000 shops in a labyrinth of alleys. Hakan and Mehmet split duties: Hakan explained the overall layout at the entrance, while Mehmet relayed details in the spice section. “Before, I had to count heads every five minutes in the bazaar. Now I don’t need to—as long as they’re wearing the receiver, I know they can hear the meeting point instructions,” Hakan said.
🏆 Client Testimonial: From “Shouting Until Hoarse” to “Being a Storyteller”
“Before Richitek, my tours were limited to groups of 15 because I had to shout. Now I can take 30 people through the Grand Bazaar without losing a single voice. Your device lets me be a storyteller again, not a yeller.”
— Hakan Yılmaz, Operations Director, Mara Tourism
Behind that testimonial, the numbers:
Total guests served: 30 people × 5 days = 150 guest-days
Equipment usage: Average 8 hours/day (9 am to 5 pm, with lunch break charging)
Client package price: €1,250 per person → 30-person group = €37,500 total tour revenue
Charging solution: Hakan used a 30-port USB charging hub at the hotel
