Yaesu FT-991 HF/50/144/430 All Mode + C4FM Digital Functions in a Single Compact Unit – Touch Panel Operation Combined With Tradizional Layout and Spectrum Scope Function With Waterfall Display Capability in a 3.5 Inch full color TFT LCD display etc. (read official leaflet and download the User Manual & the GM Istruction (ENG pdf)… see link below)
The FT-991 is equipped with a 3.5 inch full-color TFT display provides abaut functio status and settings including the function key display with intuitive layout makes touch operation and settings at a glance. Functions including the receiving band, the noise and signal interference reduction tool are grafically displayed.
Operating Mode: Press MODE Button to display the radio modulation form selection scree, then touch and select your desired modulation form.
FT-991 – Press [BAND Button] and selecet the band in one touch in the display – Band Stack Operation – utilizes a triple band-stack VFO selection thet permits storing of up to three favorite ferquencies and modes onto each bamd VFO register. [Note] Only the VFO-A system has the band stacks!
Final Stage with Ample Power Reserves: Push-pull arrangement of RD100HHF MOS-FET devices for HF/50 MHz range, output power 100 Watts. For the VHF & UHF bands uses the MOS-FET RD70HUF2 device which incorporates two MOS-FET in a single package, ouput of 50Watts. – ATU autimatic tuner only for HF/50MHz bands.
Digital C4FM Mode (4-level FSK Frequency Shift Keing) for digital communication in the FT-991 can be switched betwee 1) [V/D mode] and 2) [Voice FR mode]. – 3) Not *
1) V/D Mode: for simultaneous trasmission of Voice & Data communication. Half of the bandwidth is used for voice signal with error correction. Other Half of the data communication. (6.25+6.25 kHz = total bandwidth 12.5 kHz)
2) Voice FR Mode: for voice full rate mode, that uses entire 12.5 kHz bandwidth to trasmit only digital voice data, with high sound quality.
[Note] 3)* [Data FR mode] high-speed data communication mode, that uses entire 12.5 kHz bandwidth for only data is not supported in this device. (…see Yaesu leaflet info)
WIRES-X the Yaesu Internet Linking (VoIP wireles HRI-200 Modem is necessary) for Digital Node Station / Internet LAN
WIRES (Wide-coverage Internet Repeater Enhancement System) is an Internet communication system, an amateur node station, with HRI-200, connecting to the Internet is used as the access point and connects the wireless communication to the Internet.
Link to: Wires-X spec & Info by Yaesu USA webpage (ENG)
[Nota] – Specifiche dettagliate: si prega di vedere le fonti ufficiali – Tutte le specifiche sono soggette a modifiche senza preavviso – Tutti i marchi appartengono ai rispettivi holders.- Questa pagina è solo una panoramica non ufficiale, dove nessuno dovrebbe trarre conclusioni – Tutti le immagini e le versioni di cui sopra è solo per illustrazione.