[RTTY] SO2R radios

[Jim Martin]

HI Tom
I have a very simple SO2R 100w portable set-up  which I have just started to
use.  For the main rig I use a 10-15-20m dipole with a single feed point and
80-40m dipole which also has a single feedpoint.
I started with a manual five way antenna switch and used this to switch in
stubs as per http://www.k1ttt.net/technote/k2trstub.html
I have now built a box with relays to switch in the stubs controlled by the
MP so stub selection and antenna selection is automatic.
On the run radio (IC746) I use an HF6V vertical for all bands.  This
combination of stubs and horizontal/vertical polarisation works  a treat for
me and I can happily listen and TX on two different bands (different for QRO
set-up!!).  There is some noise which band pass filters would clean up so
this will be the winter construction project.
Audio and mic selection is a combination of many SO2R designs on the web.
Do a search for SO2R on the web and you will find some amazing info, from
all the tech stuff to the nitty gritty of how to operate and maximise the
benefits of SO2R.  See you in CQWW!!
73
Jim     MM0BQI

----- Original Message -----
From: "Tom Osborne" <w7why@harborside.com>
To: "RTTY Contesting" <rtty@contesting.com>
Sent: Sunday, September 15, 2002 10:45 PM
Subject: [RTTY] SO2R radios


>
> Hi Gang
>
> In setting up the 2nd radio, I was wondering how you SO2R guys
> split up the bands between the 2 radios.  I'm building a box that
> will let me switch everything between the 2 radios, but that only
> lets me use one radio at a time with no antenna, etc on the other
> one.  Do you set one up for one set of bands and the other for
> the rest or what?  I stuck up a milti-band antenna I could use on
> one radio or I could just put the 160, 80, 40 on one and the 20,
> 15 10 on the other.  Or is there a better way to split up the
> bands/radio's?
> Also, what works better, stubs or filters?  Thanks and 73
> Tom W7WHY
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