EXTFSK is an MMTTY plugin that enables FSK keying via a USB-serial adapter and a parallel port. See this page for more information.
EXTFSK uses DLPORTIO for LPT port keying. However, DLPORTIO does not work in the 64-bit Windows environment. EXTFSK64 uses inpout32 instead of DLPORTIO and works on the 32-bit and 64-bit Windows OSes.
|Plugin||Win32||Win64||45 baud||75 baud||Note|
|USB serial||LPT||USB serial||LPT|
Need more CPU power
Download the following zip file and unzip it. You will have two new files, EXTFSK64.FSK and inpout32.dll. Copy them to the MMTTY folder.
|2.0e||June 8, 2014||Updated for MMVARI|
|2.0d||May 22, 2014||First public release version|
|2.0c||May 17, 2014||Fixed minor bugs|
|2.0b||May 12, 2014||First release|
Open the MMTTY setup and click on TX tab. Select EXTFSK64 in the drop-down list of PTT&FSK.
Click on OK, then the EXTFSK window should be popping up.
Select LPT1 in the drop-down list of Port. Addr value may vary in accordance with the PC environment.
If you have a parallel port that has a non-standard port address (other than 0x378, 0x3bc, or 0x278), open EXTFSK64.ini and add its address (hex value) after LPTADR=. The following example illustrates how the port address 0x1234 is defined in EXTFSK64.ini
[Window] Top=267 Left=1376 State=0 [Settings] Port=COM1 FSK=0 PTT=2 InvFSK=0 InvPTT=0 [DirectAccess] LPTADR=1234
The source code of EXTFSK64 is available here.
I would like to show my greatest appreciation to Joe W4TV and Jim W5IFP for their help.
73 Oba JA7UDE