I am still waiting to see a review of a SS amp that is as good as the last
generation of tube amps when one looks at the generation of high order IM
products.
With pre-distortion and a totally digital tx, it can be done. With a linear
amplifier using Cartesian or Polar feedback, it can be done, but there aren't
any around of either type.
But with a straight linear amplifier, they will cause more platter. Take the
REAL transfer characteristic of the device and calculate the higher IM
products....
73
Peter G3RZP
========================================
Message Received: Sep 11 2013, 01:51 AM
From: "Leigh Turner" <invertech@frontierisp.net.au>
To: amps@contesting.com
Cc:
Subject: Re: [Amps] Future of RF AMPS
Dick, there's no need to wait for such innovations in RF power
semiconductors as such a long awaited low cost S.S. 1.5 kW HF amp can be
economically homebrewed using a readily available multiplicity (6 devices in
parallel/push-pull) of cheap 50V MOSFETS sourced from the surplus market.
The overall BOM will not break the bank, and such a rewarding project is
well within the scope of the tech-savvy ham experimenter (that rarefied
breed that remains amongst us in 2013, as distinct from the ubiquitous
appliance operators).
Leigh
VK5KLT
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Richard Solomon
Sent: Wednesday, 11 September 2013 9:59 AM
To: amps@contesting.com
Subject: Re: [Amps] Future of RF AMPS
I doubt I'll see this filter down to Ham Amps in my lifetime. I'm still
waiting for a decent SS Amp that runs 1.5 KW out and does not cost a
fortune.
73, Dick, W1KSZ
On Tue, Sep 10, 2013 at 10:03 AM, <donroden@hiwaay.net> wrote:
> Gold-Clamp Transistors
> ----------
> Gold Clamp allows RF transistors to be changed in minutes with only a
> screwdriver and without needing a soldering iron. Should a transistor
fail,
> several screws are removed, a new transistor dropped in place and then the
> clamp circuit board replaced over the top. It's as simple as that with the
> [TX600 V2]
>
> (http://www.fm-transmitter.**com/tx600-v2-fm-transmitter/**
>
53/product?from=2NL<http://www.fm-transmitter.com/tx600-v2-fm-transmitter/53
/product?from=2NL>),
> [TX1000 V2](http://www.fm-transmitter.**com/tx1000-v2-fm-transmitter/**
>
54/product?from=2nl<http://www.fm-transmitter.com/tx1000-v2-fm-transmitter/5
4/product?from=2nl>
> )
>
> and
>
> [TX1500 V2](http://www.fm-transmitter.**com/tx1500-v2-fm-transmitter/**
>
55/product?from=2NL<http://www.fm-transmitter.com/tx1500-v2-fm-transmitter/5
5/product?from=2NL>
> )!
>
> **[Click here for more info!](http://www.bwbroadcast.**
>
com/news/updates/gold-clamp-**transistors?from=2NL<http://www.bwbroadcast.co
m/news/updates/gold-clamp-transistors?from=2NL>
> )
>
>
> Don W4DNR
> ______________________________**_________________
> Amps mailing list
> Amps@contesting.com
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