Thanks! SE is an engineering firm that is primarily involved in the
automotive industry. Their biggest project has been work on the Automark
election machine.
I convinced them to market the MW receiver............up until that point,
they didn't have an RF designer. I am not sure if they are going to get the
active loopstick antenna done before I leave............they want to
concentrate on the receiver itself.
I do have a prototype of the antenna completed...............yesterday, I
wound an antenna that has dual feedback windings for the regen circuit. The
trick now is to get smooth control of the feedback. I tried a crude form of
control using a pot for the feedback control that feeds a resistive splitter
for the coils themselves. I am thinking about a single-ended input to
differential output unity gain JFET buffer. I just need to come up with the
design, but it shouldn't be to hard.
For the control element itself, I can use the pot just to bias a JFET as the
control element..........maximum voltage at the gate runs the JFET into the
pinchoff region, which essentially turns it off..........at least,
hopefully!

Pete

"dxAce" wrote in message
...


Pete KE9OA wrote:

I am thinking that it will be either Silicon Engines or most likely,
Quadphase. This company has two divisions.

Well, Silicon Engines does sound pretty neat.



Pete

"dxAce" wrote in message
...


Pete KE9OA wrote:

The receiver will definitely have a high impedance input, and for the
50
ohm
input, I will have a pad on the main PC board that the SO-239
connector
center terminal can be soldered to. I wasn't too crazy about that BNC
approach either.
Hopefully, the receiver should hit the market by the end of summer. I
will
be leaving the company at the end of April, so I will get everything
done
that I can. I should have an initial board layout done in the next two
weeks.

What 'brand' will the radio have on it?

dxAce
Michigan
USA



Pete

"starman" wrote in message
...
Hi Pete,

If you have to choose only one antenna impedance input, the high one
would probably be more useful, particularly for users of real long
wires
like beverage antennas. However those like myself with an inverted-L
which uses a matching transformer and coax lead would appreciate the
50-ohm input.
Is there a reason why you are considering only a BNC connector for
the
low impedance input? How about a PC board mounted female F-connector
which can be adapted by the users to their antenna lead wire.

Any idea on when the MW receiver may hit the market?

Pete KE9OA wrote:

I am finishing up the MW receiver..............anyway, I have a
high
impedance antenna input in addition to the 50 ohm input. With this
type
of
receiver is the high impedance input enough, or would interested
parties
rather have both inputs.
The reason I am asking this is because my employer would like to
have
all
jacks mounted to the main PC board. The only thing I have been able
to
find
so far has been a right angle BNC connector for the 50 ohm input.
Opinions welcomed!

Pete

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