A 10 GHz power
amplifier using a VSAT power module -
This page describes the extrication and testing of the RF
power amplifier portion of a low-power satellite uplink
module. These systems - intended for home and
business use - occasionally show up on the surplus market.
A
temperature-compensating Gunn controller - One
of the common ways to keep a Gunn oscillator on frequency
is to control its temperature, but what if you were to
monitor the Gunn's precise temperature and use that
to keep it on frequency instead? I decided to try
out this idea and ended up with this!
Interested
in
higher "frequencies?" Read about some of our
optical experimentation on the "Modulated light"
pages including what is believed to be the
current "Above 300 GHz" DX
record of 278 km.
A
few other microwave-related things:
10
MHz Crystal-based frequency reference - This
is a frequency reference that is used to keep microwave
transverters within "shouting distance" of the intended
frequency. Based on an Isotemp "ovenized" crystal
oscillator, it will keep a 24 GHz transverter within 500 Hz of
the intended frequency over a fairly wide temperature range.
Avantek
3cm
preamplifier details - A few details
concerning the use of a surplus 3cm GaAsFET preamplifer that
appeared on the surplus market in the mid 90's and can
occasionally still be found.
