Albrecht DB 275 Dualband Mode D'emploi page 65

1.14 Storing FM (broadcast radio) channels under VFO mode
 Under FM Mode, Select desired frequency first, then press [#/MR] more than 1 second,
 "όεΝεEε" will appear and next line will show "ί1"έ
 Press [UP]/[DOWN],you can store the frequency under channel numbers (01-16), or you type
in the two digit number directly.
 Press [MENU] to store the channel and quit . To exit without storing, press [*/BAND].
1.15 Main Frequency Exchange A/B : Selection of the frequency band
Press [*/BAND] for 1 second, this will toggle between the two two main frequencies, then select
the desired band A/B for transmitting and further procedures and settings.
1.16 DTMF (manual DTMF tone transmit operation)
Press and keep PTT for transmission. Press additionally any of the number keys to transmit DTMF
code, The desired DTMF code is transmitted as long as buttons are pressed.