[WriteLog] Writelog, microHAM DigiKeyer, Icom Pro III RTTY problem

[Joe Subich, W4TV]

WriteLog AFSK and microHAM DigiKeyer work fine as long as you 
select the proper "sound card" (USB Audio Codec).  WriteLog 
FSK will not work with any microHAM product ... you must use 
the MMTTY plug-in to enable FSK. 

There are two FSK incompatibilities depending on product: 

1) The USB II uses the TxD pin of the USB UART for radio control 
   so it is not available for WriteLog's "software FSK" which is 
   limited to the TxD pin.  

2) microKEYER and DigiKeyer include UARTs in their microcontroller 
   but the virtual serial ports transmit data to buffers in the 
   microKEYER or DigiKeyer faster than it can be transmitted. 
   Writelog and other software that relies on the serial driver 
   to tell it when the buffer is clear so it can send the next 
   character or drop PTT will drop PTT too soon.  

   MMTTY and similar software use an internal timer that sends 
   one character every 165 milliseconds (22 x 7.5 approximately) 
   to overcome the buffer timing problems with USB.  Data pacing 
   is enabled with the "USB Port" options in the MMTY Setup | 
   Misc tab.  Option C (Limiting Speed) appears to be the most 
   effective. 

73, 

   ... Joe Subich, W4TV 
       microHAM America 
       http://www.microHAM-USA.com 
       http://groups.yahoo.com/group/microHAM 
       support at microham.com 
 

> -----Original Message-----
> From: writelog-bounces at contesting.com 
> [mailto:writelog-bounces at contesting.com] On Behalf Of Larry M. Leitch
> Sent: Sunday, September 24, 2006 4:26 PM
> To: WriteLog at contesting.com
> Subject: [WriteLog] Writelog, microHAM DigiKeyer, Icom Pro 
> III RTTY problem
> 
> 
> Hi,
> 
> Here is my setup: Rig: Icom 756 Pro III; Software: Writelog 10.60G; 
> Interface: microHAM Digi Keyer.
> 
> I can not get RTTY to transmit in either AFSK or FSK mode. 
> Receive works 
> fine, and the CAT works (radio frequency is correctly 
> displayed on the 
> Radio button in the Writelog main window) I have read the 
> tutorial pages 
> at Rttycontesting.com.
> 
> I suspect that the problem is associated with the 
> Rttyrite...Port...Software generated FSK and the Digi Keyer.
> Here is a quote from rttycontesting.com
> 
> It is also not possible to generate FSK on any other pin of a serial 
> port other than TxD.  Thus, you cannot generate FSK in 
> WriteLog using a 
> Microham "USB Interface II" 
> <http://www.microham.com/USB%20interfaces.html> model which only keys 
> FSK on the DTR pin.
> End qoute.
> 
> Does this also apply to a Digi Keyer?
> 
> Should a DVK Type be selected on the Port Setup window?
> 
> I have no trouble running either AFSK or FSK with Mixw.
> 
> I used to be able to run Writelog 10.5. Is it possible to get 
> an older 
> version of Writelog?
> 
> Many thanks in advance.
> 
> Larry
> 
> K3FIT
> 
> 
> 
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