[RTTY] RTTY/Power Kenwood TS-570

[Vladimir Sidorov]

Don,

Sometimes we are forced to bear with realities. There is no any universal 
rig, unfortunatelly. We have to chose ones for particular purposes.

I for one like LP RTTY (sometimes) and the full 100W is the must for that.
That's why I use Icoms for RTTY (IC-756, IC-761, IC-775DSP). All of them 
easily run 100% duty cycle.
That's why I don't buy, for example, the new FT-2000 which seems to be an 
outstanding rig but it only does 50% max, preferably even 30% duty cycle. 
I.o.w. it is only capable for serious RTTY if used with a PA.

FWIW.

73,
Vladimir VE3IAE - EU1SA

---





> The previous question regarding an Icom rig and runing 100 watts on RTTY 
> brings up my problem. I am runing FSK RTTY  with my Kenwood TS-570Sg and 
> twice I have burned out components in its internal auto antenna tuner. The 
> manual with the Kenwood states that the unit is cable of runing 100 watts 
> RTTY. My repairman states not to run more than 30-40 watts with this unit! 
> I am currenlt runing 35 watts. My antenna is a 20' Force 12 flagpole 
> (basically a vertical) fed with RG8U and tunes easily on 20 meters with 
> the auto tuner. My Yaesu FT-1000MP Mark V Field also with auto tuner tunes 
> this antenna easily as well. I realize that RTTY is a continuous duty mode 
> but it seems that if the rig's rf amplifier circuit can handle 1oo watts 
> RTTY that the self contained auto tuner should as well? I would appreciate 
> comments and wondering if others using this rig have experienced similar 
> problems? Don K3PRN
> _______________________________________________