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Category Archives :Radio knowledge

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

Two Way Radio Channel Busy Lock Function

Channel Busy Lock is a privacy feature that keeps communication lines open by preventing radios from listening or transmitting through conversations outside their talkgroup. Whenever the radio is not allowed to talk, you will hear a busy tone if you try to transmit.  ...

Read more  Busy Channel Lock

Tips for Two Way Radio Charging

Try to recharge the battery after each charge. Use, this is more conducive to protect the health of the battery.  ...

Read more  lithium-ion batteries

Why do hams like the DRM

DRM is a digital commercial broadcasting model that provides FM-equivalent sound quality to shortwave broadcasts.  ...

Read more  Amateur Radio,  DRM

Why does amateur radio not support CB band

Why does amateur radio not support the CB band?  ...

Read more  amateur radio,  CB

Why do you need a DMR walkie-talkie?

Although analog walkie-talkies have become the norm over the decades, and in some cases, analog technology is indeed a very useful communication technology, DMR radios also offer many advantages over analog walkie-talkies.  ...

Read more  DMR radio,  analog radio

Why do you choose an analog walkie-talkie

The FCC created the analog Private Mobile Radio (SMR) standard in the late 1970s and allowed two-way communication in certain frequency bands for commercial and commercial systems. Analog two-way radios have been the standard for decades since then, and have ushered in the zenith of their development. So why do people choose analog walkie-talkies?  ...

Read more  Analog radio

Just need a Inverter

We always use the adapter to convert AC to DC, do you know how to invert DC to AC?  ...

Read more  Inverter,  DC to AC,  amateur radio