[amsat-bb] RF Designers? 30W UHF Transistor PA?

Peter Kazakoff peter at peterkazakoff.ca
Wed Apr 6 18:50:07 UTC 2016

Motorola's transistor group is still in the game, although they are part of
NXP (Phillips) now after Freescale got bought by NXP. They released a new
generation of transistors for their mobile radio line a few years ago:


They're pretty cheap - target market is public safety radio so cost is a
factor. I used the AFT05MS004N on the PA design for ECOSat-II. Richardson
RFPD (now owned by Arrow) carries most of the AFT line.

You can get official Microwave Office and ADS models for most of the
Freescale stuff, assuming you can get a license for one of those. That will
significantly cut down on the development time.

On Tue, Apr 5, 2016 at 6:31 AM, Robert Bruninga <bruninga at usna.edu> wrote:

> Asking AMSAT RF experts.
> What is the cheapest garden variety UHF Power Transistor good to 450 MHz
> and suitable for 20, 30W or more?  Im finding transistors can cost $30 and
> up.  That’s steep for an idea we are pursuing…
> Bob, WB4APR
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*Peter Kazakoff, EIT*
Electrical Engineer
ECOSat <http://csdc.uvic.ca/> Communications Lead
University of Victoria
*ECOSat: (778) 410 - 2414 ext. 1002*
*Cell: (250) 920 - 6870*

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