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[AMPS] SB-220 continued

To: <amps@contesting.com>
Subject: [AMPS] SB-220 continued
From: measures@vc.net (Rich Measures)
Date: Sun, 7 Sep 97 09:34:55 -0800
>> From:          Rich Measures <measures@vc.net>
>
><<  The useless sine wave calculations is a circuit carrying 
>harmonics deleted>>
>
>> resistors is 1900V/1097 ohms = 1.73A-rms, or about 0.9A per resistor.  
>> Sure, RF amps cause more heating than DC amps.  However, the safety 
>> factor appears to be adequate except for RTTY broadcasting on 10m.  .  
>
>Except for some strange reason the very resistors that Rich 
>calculates to be perfectly fine commonly fail! 
>
-  The 'Ra' resistors are intended to be anode fuses.  During a serious 
glitch, they open.  Does it seem strange that a fusing element 
occasionally opens?
Rich---

R. L. Measures, 805-386-3734, AG6K   


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