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Daily Archives:December 30,2022

Integrated Control Microphone Retevis RA86 GMRS Mobile Radio

Retevis released a new GMRS mobile radio, the model is RA86. As it shows on above picture,you can see that it has a Integrated Control Microphone. All the operations can be finished via the microphone.   ...

Read more  GMRS MobileRadio,  Retevis GMRS mobile radio

How to set and send the Repeater Pilot Tones on Retevis RT95

How to set and send the Repeater Pilot Tones on Retevis RT95  ...

Read more  Retevis RT95,  Repeater tone

Retevis RA86 is coming

Retevis RA86 is the new mobile radio with the Fully Integrated Control Microphone and low-profile hideaway unit.  ...

Read more  Retevis,  Mobile radio

ISB Modulation

Like VSB, ISB is also a modulation method between double sideband (DSB) and single sideband (SSB).  ...

Read more  Amateur radio,  ISB

Why do we need VSB modulation

in order to avoid this loss, a technique was chosen, which is a compromise between DSB-SC and SSB, called Vestigial Sideband (VSB) technique.  ...

Read more  Amateur Radio,  VSB