Retevis H777
Made by Retevis, a Chinese radio company, these radios offer durability at a competative price
*Advantages: Low cost; relatively durable; relatively long battery charge; easy to operate; easy to program
Many who have long used this radio have switched to the RT22s, but some have stayed if for nothing more then it's integrated light. It is not as bright as a real flashlight, but going from nothing to something can make all the difference.
*Disadvantages: Long term life/reliability
The radio and seems to survive only around 2 years of daily moderate-heavy use (heat exposure in vehicles, dropping, dust and dirt), but that's fine in an environment where you expect employees to often damage equipment anyway. The total life span and reliability of the radio is reduced compared to professional radios, but this can be made up for easily with quantity in most situations, though this does make it not recommended for emergency services.
Includes: 1 radio; 1 charger dock; 0 power adapters (requires USB adapter); 1 earpiece with mic, 1 radio lanyard
Warranty: 30 day limited (Covers against defects)
Questions? Were here for you! Feel free to call or text us, or reach us in the web chat!
*Advantages and disadvantages are based on testing, operation, and feedback of Madigan Technologies, its employees, partners, associates, and customers.
Custom Programming Available
Give us a call, text, or email with your requirements when placing your order.
Price is per configuration, NOT per radio.
Example: 4 of the same model radios with the same 2 custom channels just needs 1 "Basic + 2 Custom"... but if one of those needed different two channels, you would need to add another custom programming.
Don't know what you're doing? No worries!
Even if you are not familiar with radios, our team will work with you to understand exactly what you are looking for and make it happen!
Programming Type:
- Description
- Specifications
- Included
- Accessories
- Default Channel Table
Made by Retevis, a Chinese radio company, these radios offer durability at a competative price
*Advantages: Low cost; relatively durable; relatively long battery charge; easy to operate; easy to program
Many who have long used this radio have switched to the RT22s, but some have stayed if for nothing more then it's integrated light. It is not as bright as a real flashlight, but going from nothing to something can make all the difference.
*Disadvantages: Long term life/reliability
The radio and seems to survive only around 2 years of daily moderate-heavy use (heat exposure in vehicles, dropping, dust and dirt), but that's fine in an environment where you expect employees to often damage equipment anyway. The total life span and reliability of the radio is reduced compared to professional radios, but this can be made up for easily with quantity in most situations, though this does make it not recommended for emergency services.
Includes: 1 radio; 1 charger dock; 0 power adapters (requires USB adapter); 1 earpiece with mic, 1 radio lanyard
Warranty: 30 day limited (Covers against defects)
*Advantages and disadvantages are based on testing, operation, and feedback of Madigan Technologies, its employees, partners, associates, and customers.
GENERAL
Channels: 16
Modulation: FM (F3E)
Bandwidth: 12.5KHz; 25KHz
Power Source: 3.7VDC
Accessory Port(s): Kenwood 2-Pin
Charge Port(s): Proprietary Connection for Drop Charger
Audio Formats: Standard Analog
Transceive Mode(s): Analog Simplex; Analog Half Duplex (HDX) (Repeater)
ANTENNA
Type: Removable "Stubby"
Connection: SMA-F
Gain: 3dBi
Frequency Range: 400-470MHz
Power Limit: 2W
VSWR: <2.0
Impedance: 50Ω
RANGE
Theoretical Range (LoS): 0.5-2 miles
Theoretical range is provided by the manufacturer and is based on Line of Sight, where there is nothing in-between both radios.
Tested Range - Line of Sight: not yet tested
Tested Range - Flat Ground Woods: not yet tested
Tested Range - On Ground In City (Straight): not yet tested
Tested Range - On Ground In City (Obstructions): not yet tested
Range tests performed by Madigan Tech.
We consider the limit to be when it is too difficult to understand each other.
TRANSMITTER
Frequency Range: 400-470MHz
Power: ≈0.5W; ≤2W
Residual Radiation: -36dBm＜1GHz，-30dBm＞1GHz
RECEIVER
Frequency Range: 400-470MHz
Sensitivity: -122dBm（12dB SINAD）
Intermodulation Rejection: ≥58dB
Audio Power: ≥0.5W@8ohms
BUTTONS
Volume/Power Knob
Channel Select Knob
Push To Talk (PTT)
Side Button 1: Nothing; OpenMonitor; Low/High Power; Emergency Alarm (Local)
Side Button 2: Toggle Light (On; Flash; Off)
OTHER SETTINGS/FEATURES
Time Out Timer (TOT): Off; 30s; 60s; 90s; 120s; 150s; 180s; 210s; 240s; 270s; 300s
Voice Activation (VOX)
VOX Inhibit on Receive
Scan Mode
Scan Modes: Carrier; Time
Voice Announcements: None; English; Chinese
Battery Saver
1 Radio
1 Charger Dock with integrated USB A Male cable
0 USB adapters (required)
1 Earpiece
1 Radio Lanyard
Speaker Mic
Covert Earpiece
Aviation/Racing Headset
Programming Cable
Replacement Drop Charger
Replacement Battery
Replacement Clip
| Channel | Name | Description | Comments |
|---|---|---|---|
| 1 | GMRS 01 | Calling | Used to communicate what channel to use. |
| 2 | GMRS 02 | ||
| 3 | GMRS 03 | ||
| 4 | GMRS 04 | ||
| 5 | GMRS 05 | ||
| 6 | GMRS 06 | ||
| 7 | GMRS 07 | ||
| 8 | FRS 08 | ||
| 9 | FRS 09 | ||
| 10 | FRS 10 | ||
| 11 | FRS 11 | ||
| 12 | FRS 12 | ||
| 13 | FRS 13 | ||
| 14 | FRS 14 | ||
| 15 | GMRS 20 Direct | Emergency / Calling | Used for emergencies or calling. |
| 16 | GMRS 20 Repeater | Emergency / Calling | Same as last, but programmed to use a repeater (if available). |
*GMRS 20 is the unofficial emergency channel, monitored by some agencies, groups, and individuals. Transmits with the 141.3 travel tone but receives without tone filtering.
**In the United States, a GMRS license is required to operate on GMRS channels, EXCEPT in a genuine emergency (in which case you may operate any radio on any frequency to call for help to protect against an immediate danger to life or property). Contact FCC for further details.