The Icom PW-1 does full KW in RTTY flawlessly. Checked in numerous 48 hours'
contests. A good tuner (3:1 claimed, in fact it is wider) and band
switching. There is quite a specific issue, though, but it's another story.
73,
Vlad VE3IAE
--
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Jerry Flanders
Sent: Thursday, August 4, 2016 4:58 PM
To: rtty@contesting.com
Subject: Re: [RTTY] AL-80B Or KPA500 for RTTY Contesting
Yaesu Quadra - has tuner for up to 3:1 SWR, has auto bandswitching as well
as auto antenna switching (up to 4 different antennas). Handles up to 1200 w
cw/ssb and rated for 500 keydown rtty.
Jerry W4UK
At 04:30 PM 8/4/2016, Joe Subich, W4TV wrote:
>On 8/4/2016 4:02 PM, joeduerbusch wrote:
> > What do you get over the AL80B for the extra money? Solid state no
> > tune-up, auto band switch and very fast QSK break-in.
>
>But no tuner. Unless you have very well tuned (low SWR) antennas for
>every band (and all parts of the bands in which you operate) you will
>need a manual tuner (losing the advantage to "no tune-up") or a high
>power auto-tuner (more $$$) to make best use of the KPA500.
>
>Don't get me wrong ... I'm an Elecraft fan but I don't know of any
>solid state amplifier that will run correctly (and safely) into a
>significantly (SWR >~ 1.5:1) mismatched load. If the impedance is low
>the devices will saturate (maximum current), if the impedance is high
>the devices will clip (require higher voltage). In either case IMD and
>heat dissipation rise significantly.
>
>73,
>
> ... Joe, W4TV
>
>
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