[RTTY] Tuner for High Power RTTY

[Doug Hall]

Rick,
The XMatch from N4XM will handle it, but it's pretty pricey. If you don't
have a wide range of impedances to match I would suggest purchasing a vacuum
variable and a large edge-wound inductor and making an L-network (I think
when all is said and done that's what you'll end up with if you get an
XMatch.). My experience has been that most commercially available tuners are
a compromise on the lower bands. Usually configured as T-network works,
they'll match loads well below and well above 50 ohms, but the loss is
fairly high, especially on 80 and 160.

Did you design the class E amp? Would you care to provide any info? I guess
class E is a good solution for RTTY since you don't need a linear amplifier
for FSK, right?

73,
Doug, K4DSP

On 7/28/06, Rick Mintz <Rmintz at rochester.rr.com> wrote:
>
> Hi Gang,
>
> I am looking for suggestions for a tuner that can handle RTTY contesting
> at 1500 watts on 40 meters (only). I have a Drake MN-2000, but I don't think
> that it can handle the average 5 second XMIT - 3 second RECV in a contesting
> environment.
>
> (Just finishing a Class E, 40 meter, solid state amp project for RTTY. It
> has so far produced 1850 watts into a Bird 2500 watt dummy load for 30
> minutes continuous.)
>
> Any suggestions or ideas? Thanks.
>
> Rick W1TY/W2RTY
>
> _______________________________________________
> RTTY mailing list
> RTTY at contesting.com
> http://lists.contesting.com/mailman/listinfo/rtty
>