[AMRadio] ceramic standoffs needed

Gary Schafer garyschafer at comcast.net
Sat Dec 27 16:06:03 EST 2003


Hi Terry,

Sorry I was thinking of the wrong end there. But the current at the 
plate end is even worse. Voltage would be 2 times dc voltage but the 
current is very high. Need transmitting mica caps there or doorknob ceramic.

73
Gary  K4FMX

Tbs50A at aol.com wrote:
> Hi Gary,
>            I wasn't paying attention to where that piece of mail was going. 
> It wasn't meant for the list. The caps in question are padders for the plate 
> tuning not loading. Johnson in it's infinite wisdom four 500v caps in 
> serise/parrell to make a 1kv unit which  is still underrated. I figure 660v plate 
> voltage + 150w of rf @ 8v a watt 1200v rf + 600v of audio in am mode. Add it all up 
> and you get 2400v or four times the plate voltage on the final. So does that 
> seem good logic to you?
> Terry N3GTE
> 
> 
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