[BC] Comparing the audio in the Big 50's

[Robert Meuser]

For older stations this should not be a big problem since the older 
transmitters required so much more power so there would already a lot of 
power available. Remember a few stations had their own substations 
taking only an HV feed from the utility.

When building a new station it gets trickier as many utilities will try 
to undersize the feed. The best way to assure adequate power is to over 
state the load. The first thing is assume that if a station has 2 50 KW 
TXs they will both be on even if one is only tested on the generator. 
While it costs money, renting a load bank (which may be necessary for 
generator testing anyway) and kicking up the peak demand in the 
beginning will justify any over estimating and keep the power company 
happy. Once the service is in, they will not come back and downgrade.

Today it is a moot point with the latest solid state transmitters that 
have multiple single phase power supplies distributed across the three 
phases. There is enough capacitance to support modulation peaks.

On 6/20/12 8:00 AM, Dave Dunsmoor wrote:
> Makes me wonder, how much of the various 50kw stories regarding
> "sounds good" vs "not so much" and the 100kw power supplies, etc might
> be attributable to the "stiffness" of the utility power at the
> facility itself?
>
> Pulling 100kw of clean power off the grid *should* be somewhat related
> to the internal impedance of the AC supply (transmission lines,
> substations, generators, etc) but is this much of a practical concern?
>