Nowadays RTTY is of interest mainly in contests. As always stable and reproduceable signals are particularly important and FSK has a lot of advantages over AFSK. The good message is that the RemoteRig boxes generate and transfer FSK-signals natively. The user has to pay attention to only few configuration details for accurate RTTY operating.
The RRC-1258 use for virtual COM-Ports:
|RRC1258 COM0||Exclusively usable for transfer of the signals between radio panel and the main radio unit.||That means: usable only for radios with separated front panel (IC-7100, TS-480 etc..).|
|RRC1258 COM1||For transfer of additional signals.||Either control of an amp/rotator or use as WinKeyer in my case.|
|RRC1258 COM2||Dedicated CAT chanel; if COM0 is not available for radio control, COM2 should be used.||Otherwise ready for connect to the logging software.|
|RRC1258 COMExtra||RTTY-FSK (TxD), RTS-Pin carries the PTT automatically.||Available only if the USB port of the Control-RRC is connected to the computer.|
You have to determine the COM port numbers which are assigned to those four RemoteRig ports by your Windows system in the Windows Device Manager in selection „Ports: COM & LPT“.
Other needed signals are transfered through the IO-ports of the RemoteRig boxes. In my case the Radio-RRC gives out the following signals to the transceiver:
- OUT1: RTTY-FSK
- OUT2: WinKeyer
So there is only one hardware extension necessary: the cable between IO-port (Pin OUT1) of the Radio-RRC and the FSK-input of the radio.
The configuration for FSK has to be done on the pages „Serial Settings“ and „IO Settings“ of the RemoteRig configuration menues:
The configuration of MMTTY is the same as for local operation::
In the tab „TX“ of the MMTTY settings you have to enter the COM port number of RRC COMExtra from Windows device manager as „PTT & FSK port“. Because RemoteRig transfers the PTT signal over this port also no PTT problems should appear.
Also in tab “MISC” of the MMTTY settings select “COM-TxD(FSK)”.
In the setting of „USB Port-Option“ select the value „Limiting speed“.
Note: Many thanks to Frank, VO1HP, for editing this English version!