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[AMPS] Para OSC ?

To: <amps@contesting.com>
Subject: [AMPS] Para OSC ?
From: km1h@juno.com (km1h@juno.com)
Date: Sun, 13 Dec 1998 10:47:27 -0500


On Sun, 13 Dec 1998 23:32:29 +0900 ohashi <ohashi@ny.airnet.ne.jp>
writes:
>
>My Henry 2KD-5 recently became to show para-
>osc if IP exceeds over 400mA.
>What are considerable causes?
>
>Degradation of 4-500A?


1. Check the filament voltage at the socket. It should not be over 5.0 V
RMS
2. Replace the parasitic suppressor with one made from a 3 or 5W metal
oxide resistor. Use the same L to start with but you may have to
experiment.
3. What bands are the parasitics?
4. Is it truly a parasitic or is it arcing in the switch or Tune cap?


73  Carl  KM1H


>'73 de JA2DHC/1  Kazuo Ohashi
>  QTH: Fujisawa, Kanagawa, Japan
>   PBBS: JA2DHC@JL1ZND.11.JNET1.JPN.AS
>    HomePage: http://www.ny.airnet.ne.jp/ohashi/
>
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