[Kenwood] Fw: TS480 DATA

[WD8ARZ]

Good point Darrell! This is one of the reasons I prefer the HX version for
digital over the SAT version. Have ran the HX at 200 watts weeks on end no
problem for ALE off the base (not heavy on the cycle time). Mostly run at
100 watts with the HX, especially in the mobile summer time! In a normal
environment that isnt hot, and into a matched antenna, can pretty much run
at full power with heavy duty cycle due to the extra cooling it has built
in. Dont miss the internal antenna matcher because have to use a external
one to cover a wider range of antenna needs .... plus need the tuner under
computer control anyway.

External tuner: Consider the digital operations where you want to tell the
ATU what memory combination to select for a match BEFORE any RF is
generated. This so far is only available with the computer interface of the
AT-200PC that is available through W4RT. http://www.w4rt.com/  after
entering his site, you will be at  http://www.w4wb.com/index.htm  drill down
through LDG Autotuners Icon, Auto Tuners Icon, then select the AT-200PC Icon
for this tuner. Great price too. For some programs, this ATU is selectable
and is the defacto way to operate some Ham and Mars digital programs.

LDG AT-200PC: It is super nice to have the computer digital mode to switch
the 200PC for the previously memorized settings prior to RF generation to
avoid sparking on the relay contacts. Once a frequency is pre-tuned, it goes
into memory and is reselected the next time in a fraction of a second. The
AT-220 Pro is the same auto tuner but no computer interface. No computer
interface means RF is present on the relay contacts during transmit tune up
operations.

.... and thats why I dont want to use an internal tuner .... hi

73 from Bill - WD8ARZ

----- Original Message ----- 
From: "Darrell Drake" <va3dg at rogers.com>
To: <josephcheflin at yahoo.com>; <kenwood at mailman.qth.net>
Sent: Saturday, March 14, 2009 1:06 PM
Subject: Re: [Kenwood] TS480 DATA
>
> Joe....
>
> Don't set your power out for 100 watts....you'll fry your finals for sure.
> Page 59 in the Users' Manual tells you that the radio is ONLY designed for 
> a 50% duty cycle for digital comms.
> 50 watts O/P for RTTY is usually plenty..
> For PSK, I use 15-20 watts O/P...that's seems to be plenty of power for 
> working half way around the world (you don't really want to go any further 
> than that, do you?).
>
> Cheers & GL....
> Darrell,
> VA3DG/VE3DDG