[BC] WANTED - an FM tx.

[Broadcast List USER]

Generally, the Ammeters are set back from the panel on stand offs, and  
a piece of thick glass is set on the panel.  This is to protect people  
from accidently sticking something through the Ammeter and coming into  
contact with the full B+!

The HV will tend to collect dirt, so the meter, and the back of the  
glass will get dirty faster than one might expect, but frankly, that  
really isn't an issue if you actually maintain the transmitter as we  
would every other tube (high-Voltage) transmitter.  That dirt on the  
glass is a really good indication that it is time for PM.

There really aren't any other issues, and I wouldn't be bothered by  
the B+ being routed through the meter.  Frankly, it is more accurate  
than a shunt, and even a direct shunt doesn't keep the B+ off the meter.

In other words, don't worry about it, and realize it is a tube  
transmitter and needs to have the filters changed, and routine PM to  
keep it clean.

--chip

On Nov 10, 2010, at 3:05 PM, broadcast-request at radiolists.net wrote:

> Message: 12
> From: "wpio fm 89.3" <wpio at gate.net>
>
> (the Ebay CSI)
>
> Now that was a nice tour.  Re: the plate current meter, I never  
> thought
> that was a good idea to run the actual voltage through it.  In a  
> Visual
> I used to work on, I recall it being problematic but I don't remember
> what the problems were.
>
> Maybe static building up; maybe hard to read through the extra (and
> dirty) glass; maybe the safety issue of B+ up and around the other  
> meters.
>
> Randy