Topband: Re: Topband: Feeding multiple beverages

[i4jmy@iol.it]

It means that only one beverage at a time has to be connected to the 
transformer or, if you are afraid about switching some 400 Ohm, that 
the multiple transformers (boxes) shouldn't share a common ground.
Having had something similar personally (a single central point for 
multiple beverages), I didn't find out any practical difference from 
switching the wires on a single transformer than using multiple boxes 
and switcing them out from line and ground when unused (more complex 
and a bit bothering). 
This is of course valid if the beverages wires aren't too close and 
doesn't couple to each other (I didn't note important coupling at 60deg 
departure) and if there is no chance to move the relative position of 
each beverage departure quite a number of meters away from another one. 
The last would be a better solution, at least in theory, also because 
each antenna has a separate ground and an own line that lies down on 
the ground.

73,
Mauri I4JMY

> 
> Does that imply that you should switch both, central conductor AND shi
eld
> when feeding several beverages at a central point??? (otherwise you'll
> connect the different grounds in the coax switch)....
> is it probably preferable to "decentralize" the feeding points of the
> different Beverages?????
> 
> Tom's answer explains the deterioration of my Beverages after now feed
ing
> them at a common starting point with just one common ground rod (in po
ssibly
> poor soil)...
> 
> greetings
> 
> Uli, DJ2YA