Topband: fixing beverage

[Tom W8JI]

>
> I notice that my USA beverage is lower in 3-4 S units that some weeks ago.
>

5-20 dB. Depending on receiver and where it is at on the S meter.

That has to be a poor connection, open, or short between the receiver and 
the Beverage transformer end of the Beverage. It cannot be at the 
termination end.


> At simple view all seems to be OK. I think the coax is not the problem,
> because if I have a problem in the coax, will be completely deaf, right?

No. Coax can do this. It happens all the time. Especially at connectors.

>
> So this can be the cause of a problem in the end resistor or maybe in the
> transformer?  I use in this beverage a WX0B beverage boxes
>

It can not be at the end resistor termination.

The problem is if you disturb something it will often start working. You 
need to carefully check one thing at a time. Many times, if not most times, 
this is corrosion or tarnish on the center pin of the coax. Sometimes it is 
a broken wire, or a bad part from lightning or water.

The best way to test it is with an SWR meter and do a frequency sweep from 
the house, before you touch the antenna or any outside connections. The 
frequency of either adjacent major dips in SWR or impedance will allow you 
to calculate exactly where the problem is. The MFJ analyzer will do this 
within a few feet, even on a 1000 foot cable, by using distance to fault.

73 Tom