[Amps] NXP 65V LDMOS 1K80H-1800W

[Paul Baldock]

It's a pity no one makes an auto tune 2 x 3-500Z with 6M.

- Paul

At 03:16 PM 12/24/2017, you wrote:
>------------ ORIGINAL MESSAGE ------------(may be snipped)
>
>On Sun, 24 Dec 2017 08:49:23 -0800, Jim wrote:
>
> >##  I would like to see what both these amp manufacturers  have to 
> say about  duty cycle.
> >If they are  1.5 kw  ICAS,  I will pass on em for now, not for the 
> $7K price tag.
>
>REPLY:
>
>Before anyone gets too enraptured over SS amps, you might want to
>reconsider the advantages of tube type amps:
>
>1.  With a pi or pi-L tank, no antenna tuner is required up to SWR of
>about 3:1.
>
>2.  Likewise, no low pass filters.
>
>3.  Much more resistant to accidental overloads.
>
>4.  Heat dissipation is easy.
>
>5.  Usually cost less unless you want autotune.
>
>6.  1.5 kW CCS is easily achievable, i.e. a single 8877 pr pair of
>3-500Z's. The most common limiting factor is the power supply, not the
>tube.
>
>Drawbacks:
>
>1.  Warm up time with some tubes. Not an issue with 3-500Z's or other
>filament-type tubes.
>
>2.  The cheaper ones are all manual tune.
>
>You pays your money and takes your choice.
>
>73, Bill W6WRT
>
>
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