[AReU] AREU meeting next Tuesday

[Ray LaRue]

Tony and all,
Sounds great!  Wish I was there.
73,
Ray, W4BYG

----- Original Message ----- 
From: "Tony Stone" <w4tas at gte.net>
To: "BARS REFLECTOR" <bars at danmc.org>; "AREU GROUP" <areu at mailman.qth.net>
Sent: Wednesday, June 01, 2005 10:58 PM
Subject: [AReU] AREU meeting next Tuesday


> I have a full schedule next Tuesday as I will not get off from work until
> 5:30 pm but I have
> a presentation cooked up for the meeting.
>
> As you know from previous meetings I have been working with some
commercial
> microwave equipment and have been modifying it for the ham bands.
>
> I picked up some interesting stuff at Dayton and in conjuncton with what I
> already have
> I have figured out some interesting demonstrations for your enjoyment.
>
> I have a small handout about waveguides and what sizes are used for
> different frequencies.
> I address only rectangular waveguides because that is all I have for a
> demonstration. There
> are circular waveguides and eleptical waveguides also. I have a sample of
a
> flexible waveguide
> and adaptors of different types. I have a directional coupler and a
> circulator using
> 3/4 inch guide also.
>
> I will show you how to use a "slotted waveguide section to measure VSWR
and
> frequency and have a variety of "launchers" to take a signal from a
coaxial
> cable
> and inject it into a waveguide. I have a couple of "horn" antennas also.
> I was hoping to get a 2 way system going on 10.368 GHz but I don't know
> if it will be completly ready. We will at least operate one way on SSB and
> talk
> back will be on FM. It will take a couple of seconds on the makeshift
> transverter
> to change from receive to transmit. You will be surprised at how
directional
> the
> antennas are even though they are very small. I was having trouble
aligning
> them
> when they were only 3 feet apart. I have obtained a full 2 way link on
> 10.368 GHz
> using FM but the range was extremly-extremly limited (would you believe 3
> feet)
> because I didn't have an optimum transmit-receive switch.
>
> I have a "plunger/detector" arrangement that Roy (WD8RBB) gave me this
year.
> I have a demonstration using it that will roughly determine the frequency
of
> a microwave
> oscillator. It can be used from 1.2 GHz up to past 10 GHz. It's not
> very accurate but will give you an idea if you have a "clean" or "dirty"
> transmitter.
>
> Hopefully I will have another fairly effective 10 GHz rig finished in the
> near future.
>
> Hope to see you folks next Tuesday.
>
> 73
>
>  Tony
>
>
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