microHAM USB-III: Interface CAT et Audio avec carte de son integrée

The USB-III CAT interface contains an own soundcard, which is connected via USB to the computer. So you don't need separate audio cables to the computer anymore, the original sound card of your computer remains free for other applications. The sound card of the USB-III device offers two distinct advantages over standard cards: a lower noise level and a higher dynamic range (typ. 87dB). This makes this sound card much more suitable for demanding amateur radio applications. All connections to and from the computer and radio are isolated either by transformers or optically. Control lines exist for CAT, PTT, CW/FSK and Squelch.

The USB-III interface works with all computers with USB connector. microHAM USB Device Router e microHAM Device Configurator sono compatibili con tutte le versioni a 32bit e 64bit di Windows 7, Windows 8, Vista, XP, 2000 e 2003.

What is Pseudo-FSK/Pseudo-CW?

For 'real' FSK keying one would normally require a true UART chip in the computer (parallel to serial converter, COM-Port). With a virtual COM port such a device is simulated by the USB driver, but only with some problems. Depending on the load of the computer the timing of keying can vary (jitter) or be delayed (latency). The leads to not very clean telegraphy keying. With RTTY/FSK the characters might be illegible on the receiving side due to timing errors.

Now some multi mode programs (e.g. fldigi) have found a good solution to this USB driver issue. Instead of toggling a handshake line of the virtual comport, an audio signal is sent (or not) to the right channel of the soundcard output. An additional hardware decoder within the USB-III interface detects the presence or absence of the tone and uses this information to key the FSK or CW line to the radio.

This leads to a much more precise timing with FSK and CW. Especially when using high speed telegraphy or QSK this is very beneficial. When using RTTY/FSK you can be sure that all characters are sent with the proper and consistent baudrate.

Of course the radio must support FSK keying to use this function with RTTY. When using AFSK this problem does not exist.

  • No COM or LPT port necessary, just one USB port
  • Complete "Computer <-> Radio" electrical isolation
  • Integrated computer control port for all radios CI-V, FIF-232, IF-232, RS-232
  • Squelch input for signaling to computer
  • No external power adapter required
  • Strong RFI immunity
  • Quick change connectors
  • Two controls for TX and RX audio
  • Pseudo-FSK, Pseudo-CW keying for certain programs (fldigi)
  • LEDs for easy visual feedback of CAT, CW, PTT, SQL
  • Metal/Aluminum case, powder coated and silk screened
  • Free, time unlimited firmware/software upgrades via internet
Technical data
  • USB: USB 2.0 Full speed , USB 1.1 compatible
  • CAT RXD, TXD, max. 57600 Bd
  • CW: open collector, driven from DTR, max 30V/400mA
  • PTT: open collector, driven from RTS, max 30V/400mA
  • FSK: open collector, driven from DTR (requires EXTFSK from MMTTY. or pseudo FSK from fldigi)
  • SQL input: close to ground or high (two inputs) to activate. Wired to CTS
  • Size: 103 mm x 28 mm x 101 mm (BxHxT)
  • Weight: 220 gr (senza cavi)
  • USB-Interface II
  • CD-ROM with driver software, manual
  • USB cable (A/B)

Important: Cable to radio needs to be ordered separately!

USB-III Interface

Ordine No.
USB-3 microHam USB-III CAT e soundcard interfaccia 139.00 € Ordina
Info sui costi di spedizione
DB15-IC7800 DB15-IC8 DB15-IC13 DB15-TS6 DB15-TS9 DB15-TSMINI6 DB15-TS990 DB15-FT450 DB15-FTMINI8 DB15-FT736 DB15-FT847 DB15-FT890 DB15-FT920 DB15-FT950 DB15-FT990 DB15-FT1000M DB15-FT1000D DB15-FT9000 DB15-TT-OM DB15-EL-K2 DB15-EL-K3 DB37-AL100 DB38-AL100

Liste de cavi microHAM "Digi-Keyer", "USB-2" e "USB-III"

microHAM Cable
Ordine No.
DB15-IC7800 Cavo per Icom IC-7800, IC-7850, IC-7851 59.40 € Ordina
DB15-IC8 Cavo per diverso Icom (List) 59.40 € Ordina
DB15-IC13 Cavo per diverso Icom (List) 59.40 € Ordina
DB15-TS6 Cavo per diverso Kenwood (List) 59.40 € Ordina
DB15-TS9 Cavo per diverso Kenwood (List) 59.40 € Ordina
DB15-TSMINI6 Cavo per diverso Kenwood (List) 59.40 € Ordina
DB15-TS990 Cavo per TS-990 59.40 € Ordina
DB15-FT450 Cavo per Yaesu FT-450, FT-991 59.40 € Ordina
DB15-FTMINI8 Cavo per diverso Yaesu (List) 59.40 € Ordina
DB15-FT736 Cavo per FT-736 59.40 € Ordina
DB15-FT847 Cavo per FT-847 59.40 € Ordina
DB15-FT890 Cavo per FT-890, FT-900 59.40 € Ordina
DB15-FT920 Cavo per FT-920 59.40 € Ordina
DB15-FT950 Cavo per FT-950, FT-DX3000D, FT-DX1200 59.40 € Ordina
DB15-FT990 Cavo per FT-990 59.40 € Ordina
DB15-FT1000M Cavo per Yaesu FT-1000MP, FT-1000MP MkV, FT-1000MP MkV Field, FT-2000, FTDX-5000(List) 59.40 € Ordina
DB15-FT1000D Cavo per Yaesu FT-1000D 59.40 € Ordina
DB15-FT9000 Cavo per Yaesu FT-DX9000 59.40 € Ordina
DB15-TT-OM Cavo per TenTec Omni VI, Omni VI+ 59.40 € Ordina
DB15-EL-K2 Cavo per Elecraft K2 59.40 € Ordina
DB15-EL-K3 Cavo per Elecraft K3 59.40 € Ordina
40062.15M SUB-D 15-pin single connector, Male 2.80 € Ordina
Info sui costi di spedizione

DigiKEYER Lista dei cavi e schemi elettrici

DB15-IC8 Icom IC-707, IC-725, IC-726, IC-728, IC-729, IC-735, IC-736, IC-737, IC-738
IC-746, IC-746Pro, IC-7400, IC-756, IC-756Pro, IC-756ProII, IC-756ProIII
IC-761, IC-765, IC-775, IC-7600, IC-7700, IC-781, IC-910
DB15-IC13 Icom IC-703, IC-706, IC-706mkII, IC-706mkIIG, IC-718, IC-78, IC-7000, IC-7100, IC-7200, IC-7300, IC-7410, IC-9100 Schema
DB15-TS6 Kenwood TS-140, TS-440, TS-450, TS-680, TS-690
TS-711, TS-790, TS-811, TS-850, TS-940, TS-950
TS-140, TS-680 - benötigt Kenwood IF-10C
TS-711, TS-811 - benötigt Kenwood IF-10A
TS-940 - benötigt Kenwood IF-10B
DB15-TS9 Kenwood TS-570, TS-590S, TS-870, TS-2000 Schema
DB15-TSMINI6 Kenwood TS-480HX, TS-480SAT Schema
DB15-FT450 Yaesu FT-450, FT-991 Schema
DB15-FTMINI8 Yaesu FT-100, FT-817, FT-857, FT-897 Schema
DB15-FT736 Yaesu FT-736 Schema
DB15-FT847 Yaesu FT-847 Schema
DB15-FT890 Yaesu FT-890, FT-900 Schema
DB15-FT920 Yaesu FT-920 Schema
DB15-FT950 Yaesu FT-950, FT-DX3000D, FT-DX1200 Schema
DB15-FT1000M Yaesu FT-1000MP, FT-1000MP MkV, FT-1000MP MkV Field, FT-2000, FT-2000D, FTDX-5000, FTDX-5000D, FTDX-5000MP Schema
DB15-FT1000D Yaesu FT-1000D (requires ROM Version 6.0 or higher) Schema
DB15-FT9000 Yaesu FT-DX9000, all Versions