[Lowfer] DPC transmitting 173.498 QRSS-30

[Bill Ashlock]

>Sorry Bill but I won't be on the loop tonight. I put in a late night at
>work....commissioning an 8-ton coal unloader tower.

Well, I guess that gets you off the hook. 6-ton wouldn't have.<G>

>However, I'm adding a MOSFET driver chip to the exciter. Should bring the 
>input level up from 5 >to 12 Vp-p.

Curious as to how well a single ended stage works for a line driver at these 
freqs - and with that length of line. I'm suggesting this to Mike S for his 
exciter. I used to do that all the time but have sort of slipped into a 
doubled ended mode in the last few years. I really like to see a line driven 
by it's characteristic impedance, in my case I use a 0 ohm output drivers 
and a series resistance equal to the line Z. This eliminates ringing on both 
positive and negative halves even if the load at the final isn't exactly 
equal to the line Z. The penalty is a loss of half the 24v p-p driver 
voltage of course.

Bill

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