RTTY-FSK with RemoteRig controllers

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:

RRC-COM-Port Usage Remark
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!

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