Cross-Band Repeater| Superheterodyne Receiver| Air Band Reception| Detachable Control Panel
Retevis MA1 mobile radio can be used as a cross-band base station to extend the communication range. The superheterodyne receiver offers good sensitivity, frequency stability, and selectivity.
MA1 also supports control panel detachment for convenient use.  Whether camping, traveling or in competitions, MA1 will be your better partner. In addition to the main features, high power, and TX noise reduction make distant communication smooth and clear. Multi-band reception offers you various listening experiences. LCD, 8-level brightness, and 3-level auto backlight help you check the information intuitively. MA1 dual band ham radio features many functions that meet various needs. 
Main Function:
Extend the communication range;
MA1 ham radio can be used as a cross-band relay; ensuring seamless interaction.
Stable transmission signal;
mobile transceiver is designed with superheterodyne receiver; strong ability against obstruction; ensuring communication stability.
Easy to operate;
support CHIRP;CHIRP compatible with Windows XP/7/8/10/11 system.front panel can be detected and reversed; prevent damage to the speaker; offer clearer sound. 
Long range ham radio;
high power offers a stable signal; making distant communication smooth when traveling or in emergency rescue.
Clear communication;
equipped with TX noise canceling function; mobile ham radio transmits clearly; even in noisy emergency situations; without affecting timely rescue task.
Multi-band reception;
dual band mobile radio can receive 2m; 70cm; FM; AM; and aviation band frequency; bringing you various listening experiences.
Dual band ham radio;
displays and watches 2m and 70cm frequencies at the same time; increasing the communication flexibility and efficiency.
Easy reading;
LCD screen displays the frequency information intuitively; and changes the function setting easily and clearly; additionally; the included 8-level brightness offers the convenience.
Independent operation;
ham radio base station includes 2 independent adjustment knobs; separately control the dual band frequencies; without affecting each other; operation is more convenient.
FQA:
Q:How to enable the cross-band repeater function?
A:1)Press F key + tuning knob to enter menu 403 to set the cross-band frequency.
   2)Adjust to menu 403 and the screen will show RPTMOD 403 CROSS (both left and right can be transmitted) A-Tx (left frequency transmission) B-Tx (right          frequency transmission).
   3)Press and hold the TONE key and then turn on the machine to turn on the cross-band repeater. Repeat the action to turn the cross-band repeater function        of.
Note: It is forbidden to enter the cross-band repeater mode when the left and right frequencies are not cross-bandPress the tuning knob to confrm and press F key to exit. 
Note: Once the cross-band repeater is enabled, it will still be in this operation mode when the radio is turned on next time. The radio is locked at this time. Please turn of the cross-band repeater mode to enable normal function. 
Q:About MR200 Antenna VSWR?
A:1)MR200 Antenna VSWR<1.5
   2)
-For outdoor workers (such as security and construction workers):
VSWR ≤1.5, no signal leakage, 10W power can achieve the effect of 12W, communication distance in open areas can easily exceed 5 kilometers, and stable calls can be made even in basements.
-For amateur radio enthusiasts (HAM):
Wideband antennas (such as log-periodic antennas) can cover multiple amateur frequency bands when SWR < 1.5, reducing equipment replacement costs.
-For Logistics fleet、Off-road adventure:
SWR < 1.5 can reduce the power consumption of mobile radios by 30% and extend usage time by 1.5 times with the same battery capacity.
Package1 Includes:
MA1 Ham radio x1
Speaker microphone x1
Speaker microphone  bracketx1
Panel bracket x1
Radio bracket x1 
Data cable x1
Fuse x2
Power cable x1
3m connection cable x1
Screw x1
User manual x1
Package2 Includes:
MA1 Ham radio x1
Speaker microphone x1
Speaker microphone  bracketx1
Panel bracket x1
Radio bracket x1 
Data cable x1
Fuse x2
Power cable x1
3m connection cable x1
Screw x1
User manual x1
MR200 Antenna x1
General
Channel capacity: 999
Channel spacing: 5/6.25/8.33/10/12.5/15/20/25/30/50/100KHz
Modulation type: F3E
Antenna impedance: 50Ω
Frequency stability: ±5ppm @(-10℃-+60℃)
Working voltage: DC: 13.8V (±15%)
Receiving current: <0.5A;
Transmission current: < 9A 
Working temperature: -20℃~+60℃
PCB type: Double conversion Super-heterodyne
Medium Frequency: 38.85MHZ/450KHz (Left band)
Receiver
49.95MHZ/450KHz (Right band)
Sensitivity: 0.8uV for 12dB SN 
Squelch sensitivity: 0.16uV
Selectivity: 2KHz/30KHz (-6dB/-60dB )
Audio output: 8Ω, 2W
Audio distortion: <5%
AF output impedance: 4~16Ω
RF Power Amplifier: RF Power Mosfet
 
Transmitter
Modulation type: Variable Reactance
Max. modulation deviation: ≤5KHz/2.5KHz
Spurious emission: ≧ -60dB 
Microphone impedance: 2KΩ
 

Package 3:MA1 Dual Band Mobile Car Radio+2Pack HA1UV Ham Radio

The MA1 supports cross-band repeater, which can forward and amplify the low-power signal of the handheld device (HA1UV), enabling team members to achieve wide-area communication of several kilometers to tens of kilometers in the outdoors (camping, off-roading, hiking) where there is no mobile signal, thus solving the core pain point of "insufficient handheld device power and limited signal coverage".

Package 4:MA1 Dual Band Mobile Car Radio+2Pack H1 DMR GPS/APRS Radio(When used with MA1, please adjust H1 to the analog channel.

1、Amateur radio enthusiasts:Suitable for dual-mode communication, long-distance relay, APRS location sharing, and group communication for club activities.

2、Emergency rescue team:Independent digital communication network, location tracking, reliability in extreme environments, multi-team collaboration.

3、Car rally (organizer/team):It does not occupy local relays, has long-distance signal coverage, visual scheduling, rapid deployment, and multi-role packet communication.

Core advantagesDevice collaboration methodThe core problem to be solved
standalone networkingThe MA1 cross-band repeater serves as a temporary base station and does not rely on public repeaters.Dedicated communication network needs for car rallies and emergency rescue
digital communicationH1 DMR digital mode + MA1 analog relay compatibleClear voice, strong anti-interference, group collaboration, and avoidance of crosstalk.
Location trackingH1 GPS/APRS + MA1 data forwardingVisualized dispatching and safety assurance for outdoor teams, rallies, and rescue operations.
Multi-scenario adaptationMA1 (vehicle-mounted/base station) + H1 (handheld portable)The dual needs of fixed command and mobile terminals

 

Experience using MA1 in a motorhome. Please note that the foldable stand shown in the picture is not included in the package and can be purchased separately if needed.
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