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COTRE Swan Two-Way Radios review

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two-way radios

REVIEW – Who needs two-way radios when we all have cellphones? A powerful radio could move from convenience to necessity if cell signals don’t exist when camping or hiking for example. Hopefully, this review will help you sort the issues before you take the first radio set you see on a hanger in a sporting goods department.

COTRE 12

What is it

The COTRE Swan two-way radios are portable, hand-held, rechargeable, ‘walkie-talkie’ style radios operating at 2 watts or ½ watt selectable power, on the FRS (Family Radio Service) UHF frequencies. 

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What’s in the box

  • Two COTRE Swan radios
  • One Charging Base (charges two radios simultaneously)
  • One charging cord: USB-A to micro-USB (no AC charger)
  • Two belt clips
  • Six AA size, NiMh rechargeable batteries
  • Manual sheet

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Hardware specs

  • Color: Army green
  • Number of channels: 22
  • Privacy codes: 121
  • Batteries: 6 AA NiMh rechargeable, 3 per radio
  • Tuner technology: UHF
  • Frequencies:  FRS (Family Radio Service, U.S.A.)
  • Operating temperature: 14 to 122 Degrees F
  • Water resistance: IP67 (“waterproof” claimed)
  • Maximum talk range: 32 miles (claimed)

COTRE 4

Design and features

FRS Frequencies
The COTRE radios operate on the U.S. FRS (Family Radio Service) frequencies. 
Here is a link to the Federal Communications Commission’s page on the FRS.  https://www.fcc.gov/wireless/bureau-divisions/mobility-division/family-radio-service-frs

Here’s what FCC says about the FRS:
“The Family Radio Service (FRS) is a private, two-way, short-distance voice and data communications service for facilitating family and group activities. The most common use for FRS channels is short-distance, two-way voice communications using small hand-held radios that are similar to walkie-talkies.

Other services that allow similar communications include the General Mobile Radio Service (GMRS) and the Multi-Use Radio Service (MURS).

The FRS is authorized 22 channels in the 462 MHz and 467 MHz range, all of which are shared with GMRS.”

These radios could be denied entry to some countries, so check before you travel with FRS radios.

Privacy Codes
These radios can be set to any of 121 privacy codes per channel, so if others are communicating on the same channel as you, they won’t hear your conversation unless they are also on your privacy code. Stated differently, there is a 1 in 22 chance someone will be on the same channel as you, then a 1 in 121 chance they would choose the same privacy code as you.  So for someone else to be on, say, channel 15, privacy code 37 within a 2-3 mile range of you, it isn’t impossible but is quite unlikely. 

Call Tone and ‘Roger’ tone
The radio has 20 different call tones. With this feature, a tone can be transmitted to the other radio to get the operator’s attention. Think of it as a radio ringtone. The roger tone is a short tone at the end of each voice transmission which indicates to the other operator your transmission has ended. Both of these tones are more audible alerts than is voice alone. 

Red light SOS flasher
Oddly, SOS is not mentioned in the manual. SOS is activated by a press on the orange SOS button on the left side of the radio. The red LED flashes SOS in morse code.

NOAA Weather channels
The National Weather Service has transmitters across the United States that broadcast forecasts, watches, and warnings 24 hours a day. All six National Weather Service weather channels are built into the COTRE Swan. If the radio is in range of a weather service transmission it can be set for listening to Weather Service broadcasts or to receive weather alerts. The radio remains silent until a weather alert is broadcast, at which time an alert tone is sounded.

White LED flashlight
The light is on the bottom of the radio.

Floating LED light indicator
The light is on the bottom of the radio. This radio is designed to float the antenna down in the water and the white light will illuminate. 

Installation and Setup

Install the batteries, then the belt clips if desired, plug the micro-USB end of the charging cord into the charging cradle, plug the USB-A end of the cord into a charger, add some AC current, and await the radios to be fully changed.  During charging, when the radio’s Menu button is pushed a battery symbol at the top right of the screen flashes. When that symbol is steady and not flashing, the batteries are fully charged.

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Do you need a license to use these radios? Not anymore. The FCC site says, “FRS is licensed by rule. This means an individual license is not required to operate an FRS radio provided you comply with the rules. You may operate an FRS radio regardless of your age, and for personal or for business use if you are not a representative of a foreign government.” 

I hereby declare I am not a foreign agent, so I proceeded to test the COTRE radios.

Testing and observations

What could be more subjective than cell company coverage maps and TV antenna mileage claims?  Answer: Radio manufacturers touting the communication range of their products. 32 miles and not 31? How was that tested and verified? How about 3 miles? But who would buy that radio?

The few times I’ve purchased two-way radios I’ve used the mileage claims only as a vague guide to potential and certainly not a guarantee. If one radio claims 32 miles and another claims 10 miles, that prompts me to check the output power of both. One would expect the higher claim to be on the more powerful radio but it’s just marketing lingo. Read carefully before buying.

What affects radio signals of any type? The main issues are transmission power (‘strength’ of the radio’s output usually expressed as watts), distance, antenna height, building construction (if you’re indoors or there are buildings between the 2 radios), terrain, obstructions, and to a degree, weather. (To a ‘degree’?)  Weather effects come mainly from precipitation, lightning, and wind moving trees which can cause signal disruption.

I tested the line of sight communication range of these radios and used them in my residential neighborhood. I also checked the car-to-car range on the highway and city streets. 

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2 watts of UHF signal is good for about ½ mile in a residential neighborhood. That has been my experience with my first FRS radios 17 years ago (I still have those great Motorolas) and with these COTRE radios today.  

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COTRE 5

I went off on my bike to take a package to a shipping store a mile away by road. At the entrance to my neighborhood, which is exactly ½ mile from my abode, my wifely unit could hear me ok but we were both hearing some hiss, fade, and static as we talked. That’s an indication we were near the edge of the effective range of these radios. ½ mile it was. True, unimpeded, line of sight use would surely yield a better performance, but this is a practical test. How often does one need a radio only for straight line of sight, with no obstructions?

 When I got to my destination I used the radio’s call tone to get my wife’s attention. She answered but we could barely communicate by voice. Our voices were weak and barely broke squelch (‘came through’ to the other radio). Per Google Maps we were 4000 feet apart, or about 3/4 of a mile.  

COTRE 1

COTRE 2

A friend and I thought of the longest straight line roadway in our area that was not an interstate and we settled on a great choice, pictured above. One can see about 3 miles, unobstructed, from hill-crest to hill-crest of this roadway.  

We set the COTRE radios to the same channel. FRS channel 15 has the lowest frequency so call that a cheat if you must, since lower frequencies generally have greater range. We confirmed the setting for 2 watts/high power on both units, drove apart, then placed ourselves on foot at a couple of points along this roadway, transmitted back and forth several times each, and later measured our distance using Google Maps. 

2.7 miles was about the limit of the useful communication range of these radios. Not 32, 25 or 5 miles, but a bit under 3 miles was the best we could do for this straight line test.

Car to car performance was best at under ¾ of a mile.  

Here’s what bugs me: The claim of “Up to 32 miles”. Why not say ‘Up to 1000 miles’? That would be just as true. Even the claim of “3 miles in town” is unlikely unless you worked like we did to be exactly in a line of sight orientation. 

I only achieved 2.7 miles transmission and reception performance on a straight roadway, and ½ mile in a wood frame residential neighborhood. Maybe they meant to put a decimal between the 3 and the 2 of that 32 mile claim?

What I like

  • Solid, tight construction and professional ‘feel’ to these radios
  • Clear logic to the button functions
  • The full range of FRS channels and privacy codes
  • Rechargeable NiMH batteries 
  • Alkaline AA batteries can be used (but take out a home equity loan)
  • Excellent volume and speaker tone.
  • Silent monitoring of the weather radio, with the alert function is a valuable feature. 

What I’d change

  • Be honest about the performance claims – this builds good customer relations, and would minimize product returns.
  • The LCD screen needs to be brighter for outdoor visibility. The screens are hard to see outdoors even in overcast conditions.

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Final thoughts

The COTRE FRS radios are at a very good price for two radios of this build quality and number of features. My ultimate test result – I would personally buy these radios. Just be aware that you can count on these radios for 1/2 to 3/4 mile of reliable range in neighborhoods or dense woods. And that will be likely for any 2 watt FRS radios you consider.

Price: $69.99
Where to buy: Amazon
Source: The sample for this review was provided by COTRE.

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COTRE Swan Two-Way Radios review originally appeared on The Gadgeteer on May 10, 2021 at 10:00 am.

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