Gunnplexer connected to antenna
 

Can gunplexer transmitter and receiver can be mounted to external
antennas ?

Best ,

Mustafa Umut Sarac

Gunnplexer connected to antenna
 

On 24 Jan 2006 10:10:54 -0800, "mustafa umut sarac"
wrote:


Can gunplexer transmitter and receiver can be mounted to external
antennas ?

Best ,

Mustafa Umut Sarac


Yes, of course, but you'll need to waterproof the installation

Peter, G3PHO

Gunnplexer connected to antenna
 

"mustafa umut sarac" wrote in message
oups.com...

Can gunplexer transmitter and receiver can be mounted to external
antennas ?

Best ,

Mustafa Umut Sarac

I can't be much help here, but maybe someone else remembers better
about a scheme dubbed "open wire waveguide"...... I'm very foggy on the
details, but seems like the system was tried with the gunnplexer. An old QST
or CQ think I think........... 50 years ago?
Old Chief Lynn..... W7LTQ

Gunnplexer connected to antenna
 

Oh yes, I remeber that! it was dubbed G-Line from its inventor, Georges
Goubaut, canadian I think.
that line has very low losses and can operate wonderfully. However, in
this case it's going to be hard to couple the cavity to such a line.
the Gunnplexer is phase sensitive and needs circular polarized antennas
to operate correctly. I would suggest that a better approach would be
to waterproof the whole thing and locate it on the tower, going down
with cables on the low frequency side. I used to peel off the mica
window found on old kerosene burning heating stoves and ose that with a
few dabs of RTV to waterproof the cavity opening and put the whole on
the roof.
Saandy 4Z5KS

Gunnplexer connected to antenna
 

BTW, it appeared in Popular Electronics. I still have a copy of the
pater somewhere at home.

Gunnplexer connected to antenna
 

"Saandy , 4Z5KS" wrote in message
oups.com...
Oh yes, I remeber that! it was dubbed G-Line from its inventor, Georges
Goubaut, canadian I think.
that line has very low losses and can operate wonderfully. However, in
this case it's going to be hard to couple the cavity to such a line.
the Gunnplexer is phase sensitive and needs circular polarized antennas
to operate correctly.

The Gunnplexers I have owned ( AR I believe) were linear polarized.
With those, it's just a matter of getting waveguide to the antenna- this may
not be cheap especially if you need flexible transitions.
Tower mounting obviates this but temp variations will move the Gunnplexer
all over the place.
Dale W4OP