Here we take a look at two radios, one of which is sold as Jianpai FT-4XR and the other the Retevis RA685. Both radios are extremely good, but how good?
Watch the video to find out all about power output, transmitted audio quality and any spurious signals using a spectrum analyser.
Retevis RA685
Amazon UK –
JainPai FT-4XR
https://www.banggood.com/custlink/GDvPvHqsvH
Retevis RA685
https://s.click.aliexpress.com/e/_DcxU5Hx
TinySA Ultra
https://s.click.aliexpress.com/e/_DmN8QmD
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