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
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
_______________________________________________
RTTY mailing list
RTTY@contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
|