[Amps] SPE 2K RTTY Duty Cycle

[qrv at kd4e.com]

PEP is not the same thing as key-down RTTY by a long shot.

How many switches, feedlines, and antennas, external to the
amp can survive 1500w carrier for long?

Especially heating at imperfect and/or marginal contacts
and connections?

I'm seeing estimates of 5 seconds, 10 seconds, and 15 seconds
of 1500w output in RTTY continuous-duty mode - but unlimited
at 1KW.

Most vendors will be cautious about running-at-the-edge as
they know that some Hams will push that margin then blame
them when something breaks.

Question:
Is RTTY so inefficient that one really needs 1500w output?

There are many other keyboard-keyboard digi modes that can
hold a qso under poor conditions at 30-50w.

Just wondering ...

David KD4E

> I asked this very question from one of the two SPE vendors at Dayton.
> I got very evasive responses until I insisted on a plain and simple
> answer. Finally, the vendor stated that if you start at 1500 w out on
> RTTY, the power will cut back to 1200 watts after ten seconds. I was
> disappointed in his rather defensive posture on the question of
> headroom. Yet there was a sign up that said the power out was 2000
> PEP CW/SSB.
> 
> 73, Dennis W0JX


-- 

*David* KD4E
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