SDR radio

[Terry Fox]

Here are three pix of my latest SDR hardware, that I will bring to show at
Manassas.  There is still one issue - the exciter output is not high enough
in level to drive the FET amp.  After trying a small mini-boots FET amp
(without success), I've just ordered the HF Packer "preamp", which is a
small intermediate RF amp with a pair of IRF510 FETS.  If it comes in time
for me to build and integrate, the rig should be complete enough to put on
the air.

The rig consists of a Brainerd 995x DDS/QSD receiver, a Clifton Labs Z10000
buffer, and Brainerd BP filter board for the receive part.  The transmitter
is a BRainerd prototype QSE exciter, driving (not) a WA2EBY dual-IRF510
amplifier, then WA2EBY LP filter board (see Handbook).  I did not have
enough time to change the LP filter to relays yet.  The FET amp is powered
by a Brainerd 24V power supply board.

There are some additional small things, such as an extra relay, etc..

The rig can be driven from PowerSDR, Rocky, or other software.  It runs off
of 12V.

Terry

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