Welcome to Retevis Support
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31  How to get longer range.
Use a high gain antenna and make sure you radio is fully-charged.
32  ESTAS NAVIDADES LE REGALARON A MI HIJA EL MODELO ( RT388 ) , Y ME GUSTARIA SABER DONDE PUEDO CONSEGUIR , O SI ME PUEDEN ENVIAR, LAS INSTRUCCIONES DEL APARATO EN ESPAÑOL. GRACIAS.
33  When trying to read the radio a message appears "invalid port number" I use a Baofeng programming cable. Do i need another cable?
1.Ths suited one is : http://www.retevis.com/2-pin-programming-cable-for-revevis-h777-baofeng-kenwood
2. Please check if you open the radio after connecting to your PC.
3. Did you upload the USB Driver Firstly ?
4.There is a blog may helps -- http://blog.retevis.com/retevis-radio-frequency-programming/
34  What frequencies are installed on these radios?
The factory default frequencies of H777 is --
35  trotzt viele versuhungen,auch mit hilfe von leute die kenen rundum PC einstelungen,hab ich meine rt1 nicht programirt,weil nach bestetigung von bestimte funktionen,ist das nicht auf gerät gespeichert
This blog will help you how to program on PC--http://blog.retevis.com/retevis-radio-frequency-programming/
36  I have RT7 I install the software but I don't see can somebody send me the software in English to my email please firstname.lastname@example.org
Sent ,and here is a blog about how to program -- http://blog.retevis.com/retevis-radio-frequency-programming/
37  Hello! First time flash frequency went through 8 channels, all was well. After some time wanted to record other frequencies, I have failed. When connecting the cable illuminates a red light, the speakers rumble. The old frequencies are read, but the new one is recorded. Tell me, what's the matter?
Hello , I have send E-mail for H-777 solved ways. Pls check the attached from your E-mail ! If you have any question ,pls contact us !
38  hi i have rt6 and i want so scan frequency when i pres scan it scans just channels how to scan frequency? thank you
Every channel represents a frequency.
39  Is there new software for the RT3 as I seen on QRZ that there is a new version of the firms-ware but when I went looking for it I could not find it anywhere. I would be happy if you could let me know if there is and where to get it. Many Thanks: Steven.
About RT3&RT8 Update Firmware ,The whole Guide please check here : http://blog.retevis.com/firmware-update-rt3-rt8/
40  Trying to program RT6 with chirp and it says "Error reading data from radio: not the amount of data we want". any ideas?
RT6 has special Connect-Port design , could you please check if it is because of Poor contact ? Also RT6 use its own special programming cable , Please make sure if you use the right one ?